Optical image capturing system
10394000 ยท 2019-08-27
Assignee
Inventors
Cpc classification
G02B13/06
PHYSICS
G02B5/208
PHYSICS
International classification
G02B27/00
PHYSICS
G02B13/00
PHYSICS
G02B9/00
PHYSICS
Abstract
An optical image capturing system includes, along the optical axis in order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. At least one lens among the first to the sixth lenses has positive refractive force. The seventh lens has negative refractive force, wherein both surfaces thereof can be aspheric, and at least one surface thereof has an inflection point. The lenses in the optical image capturing system which have refractive power include the first to the seventh lenses. The optical image capturing system can increase aperture value and improve the imaging quality for use in compact cameras.
Claims
1. An optical image capturing system, in order along an optical axis from an object side to an image side, comprising: a first lens having refractive power; a second lens having refractive power; a third lens having refractive power; a fourth lens having refractive power; a fifth lens having refractive power; a sixth lens having refractive power, a seventh lens having refractive power; an image plane; wherein the optical image capturing system consists of the seven lenses with refractive power; at least one lens among the second lens to the seventh lens has positive refractive power; each lens among the first lens to the seventh lens has an object-side surface, which faces the object side, and an image-side surface, which faces the image side; the image-side surface of the first lens has a first image-side bearing surface; the object-side surface of the second lens has a second object-side bearing surface, and the image-side surface of the second lens has a second image-side bearing surface, wherein the second object-side bearing surface and the first image-side bearing surface contact each other; wherein the optical image capturing system satisfies:
1f/HEP10;
0 deg<HAF150 deg; and
0.5SETP/STP<1; where f1, f2 f3, f4, f5, f6, and f7 are focal lengths of the first lens to the seventh lens, respectively; f is a focal length of the optical image capturing system; HEP is an entrance pupil diameter of the optical image capturing system; HOS is a distance between a point on the object-side surface of the first lens where the optical axis passes through and a point on the image plane where the optical axis passes through on the optical axis; HOI is a maximum height for image formation perpendicular to the optical axis on the image plane; InTL is a distance from the object-side surface of the first lens to the image-side surface of the seventh lens; HAF is a half of a maximum field angle of the optical image capturing system; ETP1, ETP2, ETP3, ETP4, ETP5, ETP6, and ETP7 are respectively a thickness at the height of HEP of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens; SETP is a sum of the aforementioned ETP1 to ETP7; TP1, TP2, TP3, TP4, TP5, TP6, and TP7 are respectively a thickness of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens on the optical axis; STP is a sum of the aforementioned TP1 to TP7.
2. The optical image capturing system of claim 1, wherein the object-side surface of the third lens has a third object-side bearing surface, and the image-side surface of the third lens has a third image-side bearing surface; the third object-side bearing surface and the second image-side bearing surface contact each other.
3. The optical image capturing system of claim 2, wherein the object-side surface of the fourth lens has a fourth object-side bearing surface, and the image-side surface of the fourth lens has a fourth image-side bearing surface; the fourth object-side bearing surface and the third image-side bearing surface contact each other.
4. The optical image capturing system of claim 2, wherein the optical image capturing system satisfies:
0 deg<IAG90 deg; where an extension line of each image-side bearing surface among the first to the third image-side bearing surfaces intersects the optical axis at an included angle IAG; the included angles are respectively denoted as IAG1, IAG2, and IAG3 for the first to the third image-side bearing surfaces.
5. The optical image capturing system of claim 4, wherein the optical image capturing system satisfies:
IAG1=IAG2=IAG3.
6. The optical image capturing system of claim 2, wherein the optical image capturing system satisfies:
0 deg<OAG90 deg; where an extension line of each object-side bearing surface among the second to the third object-side bearing surfaces intersects the optical axis at an included angle OAG; the included angles are respectively denoted as OAG2 and OAG3 for the second to the third object-side bearing surfaces.
7. The optical image capturing system of claim 6, wherein the optical image capturing system satisfies:
OAG2=OAG3.
8. The optical image capturing system of claim 1, wherein the optical image capturing system further satisfies:
MTFE00.2;
MTFE30.01; and
MTFE70.01; where MTFE0, MTFE3, and MTFE7 are respectively a value of modulation transfer function of visible light in a spatial frequency of 55 cycles/mm at the optical axis, 0.3 HOI, and 0.7 HOI on an image plane for visible light.
9. The optical image capturing system of claim 1, further comprising an aperture, wherein the optical image capturing system further satisfies:
0.2InS/HOS1.1; where InS is a distance on the optical axis between the aperture and the image plane.
10. An optical image capturing system, in order along an optical axis from an object side to an image side, comprising: a first lens having refractive power; a second lens having refractive power; a third lens having refractive power; a fourth lens having refractive power; a fifth lens having refractive power; a sixth lens having refractive power, a seventh lens having refractive power; and an image plane; wherein the optical image capturing system consists of the seven lenses with refractive power; at least one lens among the first lens to the third lens has positive refractive power; at least one lens among the fourth lens to the seventh lens has positive refractive power; each lens among the first lens to the seventh lens has an object-side surface, which faces the object side, and an image-side surface, which faces the image side; the image-side surface of the first lens has a first image-side bearing surface; the object-side surface of the second lens has a second object-side bearing surface, and the image-side surface of the second lens has a second image-side bearing surface, wherein the second object-side bearing surface and the first image-side bearing surface contact each other; the object-side surface of the third lens has a third object-side bearing surface, and the image-side surface of the third lens has a third image-side bearing surface, wherein the third object-side bearing surface and the second image-side bearing surface contact each other; an extension line of each image-side bearing surface among the first to the second image-side bearing surfaces intersects the optical axis at an included angle IAG; the included angles are respectively denoted as IAG1 and IAG2 for the first to the second image-side bearing surfaces; an extension line of each object-side bearing surface among the second to the third object-side bearing surfaces intersects the optical axis at an included angle OAG; the included angles are respectively denoted as OAG2 and OAG3 for the second to the third object-side bearing surfaces; wherein the optical image capturing system satisfies:
0 deg<IAG90 deg;
0 deg<OAG90 deg;
1.0f/HEP10.0;
0 deg<HAF150 deg; and
0.2EIN/ETL<1; where f1, f2 f3, f4, f5, f6, and f17 are focal lengths of the first lens to the seventh lens, respectively; f is a focal length of the optical image capturing system; HEP is an entrance pupil diameter of the optical image capturing system; HOS is a distance between a point on the object-side surface of the first lens where the optical axis passes through and a point on the image plane where the optical axis passes through on the optical axis; HOI is a maximum height for image formation perpendicular to the optical axis on the image plane; InTL is a distance from the object-side surface of the first lens to the image-side surface of the seventh lens; HAF is a half of the maximum field angle of the optical image capturing system; ETL is a distance in parallel with the optical axis between a coordinate point at a height of HEP on the object-side surface of the first lens and the image plane; EIN is a distance in parallel with the optical axis between the coordinate point at the height of HEP on the object-side surface of the first lens and a coordinate point at a height of HEP on the image-side surface of the seventh lens.
11. The optical image capturing system of claim 10, wherein the optical image capturing system satisfies:
IAG1=IAG2.
12. The optical image capturing system of claim 10, wherein the optical image capturing system satisfies:
OAG2=OAG3.
13. The optical image capturing system of claim 10, wherein the optical image capturing system satisfies:
0 deg<IAG45 deg; and
0 deg<OAG45 deg.
14. The optical image capturing system of claim 10, wherein the optical image capturing system further satisfies:
0.2EBL/BL2; where EBL is a horizontal distance in parallel with the optical axis between a coordinate point at the height of HEP on the image-side surface of the seventh lens and image surface; BL is a horizontal distance in parallel with the optical axis between the point on the image-side surface of the seventh lens where the optical axis passes through and the image plane.
15. The optical image capturing system of claim 10, further comprising a filtering component provided between the seventh lens and the image plane, wherein the optical image capturing system further satisfies:
0.2EIR/PIR2; where EIR is a horizontal distance in parallel with the optical axis between the coordinate point at the height of HEP on the image-side surface of the seventh lens and the filtering component; PIR is a horizontal distance in parallel with the optical axis between a point on the image-side surface of the seventh lens where the optical axis passes through and the filtering component.
16. The optical image capturing system of claim 10, wherein the optical image capturing system further satisfies:
0.3SETP/EIN<1; where ETP1, ETP2, ETP3, ETP4, ETP5, ETP6, and ETP7 are respectively a thickness at the height of HEP of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens; SETP is a sum of the aforementioned ETP1 to ETP7.
17. The optical image capturing system of claim 10, wherein the optical image capturing system further satisfies:
0<ETP7/TP75; where ETP7 is a thickness of the seventh lens at the height of HEP in parallel with the optical axis; TP7 is a thickness of the seventh lens on the optical axis.
18. The optical image capturing system of claim 10, wherein the optical image capturing system further satisfies:
MTFQ00.01;
MTFQ30.01; and
MTFQ70.01 where HOI is a maximum height for image formation perpendicular to the optical axis on the image plane; MTFQ0, MTFQ3, and MTFQ7 are respectively values of modulation transfer function of visible light in a spatial frequency of 110 cycles/mm at the optical axis, 0.3 HOI, and 0.7 HOI on the image plane for visible light.
19. The optical image capturing system of claim 10, wherein at least one lens among the first lens to the seventh lens is a light filter, which is capable of filtering out light of wavelengths shorter than 500 nm.
20. An optical image capturing system, in order along an optical axis from an object side to an image side, comprising: a first lens having refractive power; a second lens having refractive power; a third lens having refractive power; a fourth lens having refractive power; a fifth lens having refractive power; a sixth lens having refractive power; a seventh lens having refractive power; and an image plane; wherein the optical image capturing system consists of the seven lenses having refractive power; at least one lens among the first lens to the third lens has positive refractive power; at least one lens among the fourth lens to the seventh lens has positive refractive power; each lens among the first lens to the seventh lens has an object-side surface, which faces the object side, and an image-side surface, which faces the image side; the image-side surface of the first lens has a first image-side bearing surface; the object-side surface of the second lens has a second object-side bearing surface, and the image-side surface of the second lens has a second image-side bearing surface, wherein the second object-side bearing surface and the first image-side bearing surface contact each other; the object-side surface of the third lens has a third object-side bearing surface, and the image-side surface of the third lens has a third image-side bearing surface, wherein the third object-side bearing surface and the second image-side bearing surface contact each other; the object-side surface of the fourth lens has a fourth object-side bearing surface, and the image-side surface of the fourth lens has a fourth image-side bearing surface, wherein the fourth object-side bearing surface and the third image-side bearing surface contact each other; an extension line of each image-side bearing surface among the first to the third image-side bearing surfaces intersects the optical axis at an included angle IAG; the included angles are respectively denoted as IAG1, IAG2, and IAG3 for the first to the third image-side bearing surfaces; an extension line of each object-side bearing surface among the second to the fourth object-side bearing surfaces intersects the optical axis at an included angle OAG; the included angles are respectively denoted as OAG2, OAG3, and OAG4 for the second to the fourth object-side bearing surfaces; wherein the optical image capturing system satisfies:
0 deg<IAG45 deg;
0 deg<OAG45 deg;
1.0f/HEP10;
0 deg<HAF150 deg; and
0.2EIN/ETL<1; where f1, f2 f3, f4, f5, f6, and f7 are focal lengths of the first lens to the seventh lens, respectively; f is a focal length of the optical image capturing system; HEP is an entrance pupil diameter of the optical image capturing system; InTL is a distance from the object-side surface of the first lens to the image-side surface of the seventh lens; HAF is a half of a maximum view angle of the optical image capturing system; HOS is a distance between a point on the object-side surface of the first lens where the optical axis passes through and a point on the image plane where the optical axis passes through on the optical axis; HOI is a maximum height for image formation perpendicular to the optical axis on the image plane; ETL is a distance in parallel with the optical axis between a coordinate point at a height of HEP on the object-side surface of the first lens and the image plane; EIN is a distance in parallel with the optical axis between the coordinate point at the height of HEP on the object-side surface of the first lens and a coordinate point at a height of HEP on the image-side surface of the seventh lens.
21. The optical image capturing system of claim 20, wherein the extension line of each image-side bearing surface among the first to the third image-side bearing surfaces and of each object-side bearing surface among the second to the fourth object-side bearing surfaces all extends toward the object side, and intersects the optical axis.
22. The optical image capturing system of claim 20, wherein the extension line of each image-side bearing surface among the first to the third image-side bearing surfaces and of each object-side bearing surface among the second to the fourth object-side bearing surfaces all extends toward the image plane, and intersects the optical axis.
23. The optical image capturing system of claim 20, wherein the optical image capturing system satisfies:
0.01 mmBSL1 mm; where BSL is a contour length of all contact surfaces between the object-side bearing surfaces and the image-side bearing surfaces on a radial direction.
24. The optical image capturing system of claim 20, wherein the image plane is either flat or curved.
25. The optical image capturing system of claim 23, further comprising an aperture, an image sensor, and a driving module, wherein the image sensor is disposed on the image plane; the driving module is coupled with the lenses to move the lenses; the optical image capturing system further satisfies:
0.25InS/HOS1.1; where InS is a distance on the optical axis between the aperture and the image plane.
Description
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
(1) The present invention will be best understood by referring to the following detailed description of some illustrative embodiments in conjunction with the accompanying drawings, in which
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DETAILED DESCRIPTION OF THE INVENTION
(22) An optical image capturing system of the present invention includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an image plane from an object side to an image side. The optical image capturing system further is provided with an image sensor at an image plane. Image heights in the following embodiments are all almost 3.91 mm.
(23) The optical image capturing system can work in three wavelengths, including 486.1 nm, 587.5 nm, and 656.2 nm, wherein 587.5 nm is the main reference wavelength and is the reference wavelength for obtaining the technical characters. The optical image capturing system can also work in five wavelengths, including 470 nm, 510 nm, 555 nm, 610 nm, and 650 nm wherein 555 nm is the main reference wavelength, and is the reference wavelength for obtaining the technical characters.
(24) The optical image capturing system of the present invention satisfies 0.5PPR/|NPR|15, and a preferable range is 1PPR/NPR|3.0, where PPR is a ratio of the focal length f of the optical image capturing system to a focal length fp of each of lenses with positive refractive power; NPR is a ratio of the focal length f of the optical image capturing system to a focal length fn of each of lenses with negative refractive power; PPR is a sum of the PPRs of each positive lens; and NPR is a sum of the NPRs of each negative lens. It is helpful for control of an entire refractive power and an entire length of the optical image capturing system.
(25) The image sensor is provided on the image plane. The optical image capturing system of the present invention satisfies HOS/HOI10 and 0.5HOS/f10, and a preferable range is 1HOS/HOI5 and 1HOS/f7, where HOI is a half of a diagonal of an effective sensing area of the image sensor, i.e., the maximum image height, and HOS is a height of the optical image capturing system, i.e. a distance on the optical axis between the object-side surface of the first lens and the image plane. It is helpful for reduction of the size of the system for used in compact cameras.
(26) The optical image capturing system of the present invention further is provided with an aperture to increase image quality.
(27) In the optical image capturing system of the present invention, the aperture could be a front aperture or a middle aperture, wherein the front aperture is provided between the object and the first lens, and the middle is provided between the first lens and the image plane. The front aperture provides a long distance between an exit pupil of the system and the image plane, which allows more elements to be installed. The middle could enlarge a view angle of view of the system and increase the efficiency of the image sensor. The optical image capturing system satisfies 0.2InS/HOS1.1, where InS is a distance between the aperture and the image-side surface of the sixth lens. It is helpful for size reduction and wide angle.
(28) The optical image capturing system of the present invention satisfies 0.1TP/InTL0.9, where InTL is a distance between the object-side surface of the first lens and the image-side surface of the seventh lens, and TP is a sum of central thicknesses of the lenses on the optical axis. It is helpful for the contrast of image and yield rate of manufacture and provides a suitable back focal length for installation of other elements.
(29) The optical image capturing system of the present invention satisfies 0.001|R1/R2|20, and a preferable range is 0.01|R1/R2|10, where R1 is a radius of curvature of the object-side surface of the first lens, and R2 is a radius of curvature of the image-side surface of the first lens. It provides the first lens with a suitable positive refractive power to reduce the increase rate of the spherical aberration.
(30) The optical image capturing system of the present invention satisfies 7<(R13R14)/(R13+R14)<50, where R13 is a radius of curvature of the object-side surface of the seventh lens, and R14 is a radius of curvature of the image-side surface of the seventh lens. It may modify the astigmatic field curvature.
(31) The optical image capturing system of the present invention satisfies IN12/f3.0, where IN12 is a distance on the optical axis between the first lens and the second lens. It may correct chromatic aberration and improve the performance.
(32) The optical image capturing system of the present invention satisfies IN67/f0.8, where IN67 is a distance on the optical axis between the sixth lens and the seventh lens. It may correct chromatic aberration and improve the performance.
(33) The optical image capturing system of the present invention satisfies 0.1(TP1+IN12)/TP2510, where TP1 is a central thickness of the first lens on the optical axis, and TP2 is a central thickness of the second lens on the optical axis. It may control the sensitivity of manufacture of the system and improve the performance.
(34) The optical image capturing system of the present invention satisfies 0.1(TP7+IN67)/TP6510, where TP6 is a central thickness of the sixth lens on the optical axis, TP7 is a central thickness of the seventh lens on the optical axis, and IN67 is a distance between the sixth lens and the seventh lens. It may control the sensitivity of manufacture of the system and improve the performance.
(35) The optical image capturing system of the present invention satisfies 0.1TP4/(IN34+TP4+IN45)<1, where TP3 is a central thickness of the third lens on the optical axis, TP4 is a central thickness of the fourth lens on the optical axis, TP5 is a central thickness of the fifth lens on the optical axis, IN34 is a distance on the optical axis between the third lens and the fourth lens, IN45 is a distance on the optical axis between the fourth lens and the fifth lens, and InTL is a distance between the object-side surface of the first lens and the image-side surface of the seventh lens. It may fine tune and correct the aberration of the incident rays layer by layer, and reduce the height of the system.
(36) The optical image capturing system satisfies 0 mmHVT713 mm; 0 mm<HVT726 mm; 0HVT71/HVT72; 0 mm|SGC71|0.5 mm; 0 mm<|SGC722 mm; and 0<|SGC72|/(|SGC72|+TP7)0.9, where HVT71 a distance perpendicular to the optical axis between the critical point C71 on the object-side surface of the seventh lens and the optical axis; HVT72 a distance perpendicular to the optical axis between the critical point C72 on the image-side surface of the seventh lens and the optical axis; SGC71 is a distance in parallel with the optical axis between an point on the object-side surface of the seventh lens where the optical axis passes through and the critical point C71; SGC72 is a distance in parallel with the optical axis between an point on the image-side surface of the seventh lens where the optical axis passes through and the critical point C72. It is helpful to correct the off-axis view field aberration.
(37) The optical image capturing system satisfies 0.2HVT72/HOI0.9, and preferably satisfies 0.3HVT72/HOI0.8. It may help to correct the peripheral aberration.
(38) The optical image capturing system satisfies 0HVT72/HOS0.5, and preferably satisfies 0.2HVT72/HOS0.45. It may help to correct the peripheral aberration.
(39) The optical image capturing system of the present invention satisfies 0<SGI711/(SGI711+TP7)0.9; 0<SGI721/(SGI721+TP7)0.9, and it is preferable to satisfy 0.1<SGI711/(SGI711+TP7)0.6; 0.1<SGI721/(SGI721+TP7)0.6, where SGI711 is a displacement in parallel with the optical axis, from a point on the object-side surface of the seventh lens, through which the optical axis passes, to the inflection point on the object-side surface, which is the closest to the optical axis, and SGI721 is a displacement in parallel with the optical axis, from a point on the image-side surface of the seventh lens, through which the optical axis passes, to the inflection point on the image-side surface, which is the closest to the optical axis.
(40) The optical image capturing system of the present invention satisfies 0<SGI712/(SGI712+TP7)0.9; 0<SGI722/(SGI722+TP7)0.9, and it is preferable to satisfy 0.1SGI712/(SGI712+TP7)0.6; 0.1<SGI722/(SGI722+TP7)0.6, where SGI712 is a displacement in parallel with the optical axis, from a point on the object-side surface of the seventh lens, through which the optical axis passes, to the inflection point on the object-side surface, which is the second closest to the optical axis, and SGI722 is a displacement in parallel with the optical axis, from a point on the image-side surface of the seventh lens, through which the optical axis passes, to the inflection point on the image-side surface, which is the second closest to the optical axis.
(41) The optical image capturing system of the present invention satisfies 0.001 mm|HIF711|5 mm; 0.001 mm|HIF721|5 mm, and it is preferable to satisfy 0.1 mm|HIF711|3.5 mm; 1.5 mm|HIF721|3.5 mm, where HIF711 is a distance perpendicular to the optical axis between the inflection point on the object-side surface of the seventh lens, which is the closest to the optical axis, and the optical axis; HIF721 is a distance perpendicular to the optical axis between the inflection point on the image-side surface of the seventh lens, which is the closest to the optical axis, and the optical axis.
(42) The optical image capturing system of the present invention satisfies 0.001 mm|HIF712|5 mm; 0.001 mm|HIF722|5 mm, and it is preferable to satisfy 0.1 mm|HIF722|3.5 mm; 0.1 mm|HIF712|3.5 mm, where HIF712 is a distance perpendicular to the optical axis between the inflection point on the object-side surface of the seventh lens, which is the second closest to the optical axis, and the optical axis; HIF722 is a distance perpendicular to the optical axis between the inflection point on the image-side surface of the seventh lens, which is the second closest to the optical axis, and the optical axis.
(43) The optical image capturing system of the present invention satisfies 0.001 mm|HIF713|5 mm; 0.001 mm|HIF723|5 mm, and it is preferable to satisfy 0.1 mm|HIF723|3.5 mm; 0.1 mm|HIF713|3.5 mm, where HIF713 is a distance perpendicular to the optical axis between the inflection point on the object-side surface of the seventh lens, which is the third closest to the optical axis, and the optical axis; HIF723 is a distance perpendicular to the optical axis between the inflection point on the image-side surface of the seventh lens, which is the third closest to the optical axis, and the optical axis.
(44) The optical image capturing system of the present invention satisfies 0.001 mm|HIF714|5 mm; 0.001 mm|HIF724|5 mm, and it is preferable to satisfy 0.1 mm|HIF724|3.5 mm; 0.1 mm|HIF714|3.5 mm, where HIF714 is a distance perpendicular to the optical axis between the inflection point on the object-side surface of the seventh lens, which is the fourth closest to the optical axis, and the optical axis; HIF724 is a distance perpendicular to the optical axis between the inflection point on the image-side surface of the seventh lens, which is the fourth closest to the optical axis, and the optical axis.
(45) In an embodiment, the lenses of high Abbe number and the lenses of low Abbe number are arranged in an interlaced arrangement that could be helpful for correction of aberration of the system.
(46) An equation of aspheric surface is
z=ch.sup.2/[1+[1(k+1)c.sup.2h.sup.2].sup.0.5]+A4h.sup.4+A6h.sup.6+A8h.sup.8+A10h.sup.10+A12h.sup.12+A14h.sup.14+A16h.sup.16+A18h.sup.18+A20h.sup.20+(1)
(47) where z is a depression of the aspheric surface; k is conic constant; c is reciprocal of the radius of curvature; and A4, A6, A8, A10, A12, A14, A16, A18, and A20 are high-order aspheric coefficients.
(48) In the optical image capturing system, the lenses could be made of plastic or glass. The plastic lenses may reduce the weight and lower the cost of the system, and the glass lenses may control the thermal effect and enlarge the space for arrangement of the refractive power of the system. In addition, the opposite surfaces (object-side surface and image-side surface) of the first to the seventh lenses could be aspheric that can obtain more control parameters to reduce aberration. The number of aspheric glass lenses could be less than the conventional spherical glass lenses, which is helpful for reduction of the height of the system.
(49) When the lens has a convex surface, which means that the surface is convex around a position, through which the optical axis passes, and when the lens has a concave surface, which means that the surface is concave around a position, through which the optical axis passes.
(50) The optical image capturing system of the present invention could be applied in a dynamic focusing optical system. It is superior in the correction of aberration and high imaging quality so that it could be allied in lots of fields.
(51) The optical image capturing system of the present invention could further include a driving module to meet different demands, wherein the driving module can be coupled with the lenses to move the lenses. The driving module can be a voice coil motor (VCM), which is used to move the lens for focusing, or can be an optical image stabilization (OIS) component, which is used to lower the possibility of having the problem of image blurring which is caused by subtle movements of the lens while shooting.
(52) To meet different requirements, at least one lens among the first lens to the seventh lens of the optical image capturing system of the present invention can be a light filter, which filters out light of wavelength shorter than 500 nm. Such effect can be achieved by coating on at least one surface of the lens, or by using materials capable of filtering out short waves to make the lens.
(53) To meet different requirements, the image plane of the optical image capturing system in the present invention can be either flat or curved. If the image plane is curved (e.g., a sphere with a radius of curvature), the incidence angle required for focusing light on the image plane can be decreased, which is not only helpful to shorten the length of the system (TTL), but also helpful to increase the relative illuminance.
(54) The object-side surface of each lens in the optical image capturing system provided in the present invention, if required, could be provided with an object-side bearing surface (denoted as BSO), and the image-side surface thereof, if required, could be also provided with an image-side bearing surface (denoted as BSI). For each lens, the object-side bearing surface and the image-side bearing surface thereof, if required, could be engaged with a contact surface of the adjacent lens in front or in back of said lens to form a stack structure, wherein a contour length of said contact surface on a radial direction is denoted as BSL, which satisfies 0.01 mmBSL1 mm, and preferably satisfies 0.05 mmBSL0.5 mm. In a best mode, it can further required to satisfy 0.08 mmBSL0.2 mm.
(55) In the optical image capturing system of the present invention, said stack structure, if required, could be designed as one-engaging, which means there are only two lenses engaged with each other. For example, say the image-side surface of the first lens has a first image-side bearing surface, and the object-side surface of the second lens has a second object-side bearing surface, wherein the second object-side bearing surface and the first image-side bearing surface contact each other, and are engaged together. Such engaging structure is called one-engaging. Or, the stack structure could be designed as two-engaging. For example, in addition to the one-engaging mentioned above, the image-side surface of the second lens has a second image-side bearing surface, and the object-side surface of the third lens has a third object-side bearing surface, wherein the third object-side bearing surface and the second image-side bearing surface contact each other, and are engaged together. Such engaging structure is called two-engaging.
(56) Or, the stack structure could be designed as three-engaging or all-engaging. Take an optical image capturing system having seven lenses as an example. In addition to the aforementioned two-engaging, the image-side surface of the third lens has a third image-side bearing surface, and the object-side surface of the fourth lens has a fourth object-side bearing surface, wherein the fourth object-side bearing surface and the third image-side bearing surface contact each other, and are engaged together; the image-side surface of the fourth lens has a fourth image-side bearing surface, and the object-side surface of the fifth lens has a fifth object-side bearing surface, wherein the fifth object-side bearing surface and the fourth image-side bearing surface contact each other, and are engaged together; the image-side surface of the fifth lens has a fifth image-side bearing surface, and the object-side surface of the sixth lens has a sixth object-side bearing surface, wherein the sixth object-side bearing surface and the fifth image-side bearing surface contact each other, and are engaged together; the image-side surface of the sixth lens has a sixth image-side bearing surface, and the object-side surface of the seventh lens has a seventh object-side bearing surface, wherein the seventh object-side bearing surface and the sixth image-side bearing surface contact each other, and are engaged together.
(57) An extension line of each image-side bearing surface among the first image-side bearing surface to the seventh image-side bearing surface could be defined as extending toward the object side or the image plane to meet different requirements, which intersects the optical axis at an included angle IAG, wherein the included angle between the optical axis and each extension line of each image-side bearing surface is respectively denoted as IAG1, IAG2, IAG3, IAG4, IAG5, IAG6, and IAG7 in sequence, which satisfies 0 deg<IAG90 deg. The size of the aforementioned IAG1 to IAG7 could be designed to meet the actual requirement of an optical image capturing system, and it is preferred to satisfy 0 deg<IAG45 deg. In a best mode, it can be further required to satisfy 0 deg<IAG30 deg, and IAG1=IAG2=IAG3=IAG4=IAG5=IAG6=IAG7, which means all IAGs are approximately equal. In a specific embodiment, the condition can be set as 0 deg<IAG30 deg. In yet another specific embodiment, there can be a further condition that requires one of IAG1 and IAG7 is the smallest one.
(58) Take the aforementioned all-engaging structure of the optical image capturing system having seven lenses as an example, an extension line of each object-side bearing surface among the first object-side bearing surface to the seventh object-side bearing surface could be defined as extending toward the object side or the image plane to meet different requirements, which intersects the optical axis at an included angle OAG, wherein the included angle between the optical axis and each extension line of each object-side bearing surface is respectively denoted as OAG1, OAG2, OAG3, OAG4, OAG5, OAG6, and OAG7 in sequence, which satisfies 0 deg<OAG90 deg. The size of the aforementioned OAG1 to OAG7 could be designed to meet the actual requirement of an optical image capturing system, and it is preferred to satisfy 0 deg<OAG45 deg. In a best mode, it can be further required to satisfy 0 deg<OAG30 deg, and OAG1=OAG2=OAG3=OAG4=OAG5=OAG6=OAG7, which means all OAGs are approximately equal. In a specific embodiment, the condition can be set as 0 deg<OAG30 deg. In yet another specific embodiment, there can be a further condition that requires one of OAG1 and OAG7 is the smallest one.
(59)
(60)
(61) We provide several embodiments in conjunction with the accompanying drawings for the best understanding, which are:
First Embodiment
(62) As shown in
(63) The first lens 110 has negative refractive power and is made of plastic. An object-side surface 112 thereof, which faces the object side, is a concave aspheric surface, and an image-side surface 114 thereof, which faces the image side, is a concave aspheric surface. The object-side surface 112 has an inflection point, and the image-side surface 114 has two inflection points. A thickness of the first lens 110 on the optical axis is TP1, and a thickness of the first lens 110 at the height of a half of the entrance pupil diameter (HEP) is denoted by ETP1.
(64) The first lens satisfies SGI111=0.1110 mm; SGI121=2.7120 mm; TP1=2.2761 mm; |SGI111|/(|SGI111|+TP1)=0.0465; |SGI121|/(|SGI121|+TP1)=0.5437, where a displacement in parallel with the optical axis from a point on the object-side surface of the first lens, through which the optical axis passes, to the inflection point on the image-side surface, which is the closest to the optical axis is denoted by SGI111, and a displacement in parallel with the optical axis from a point on the image-side surface of the first lens, through which the optical axis passes, to the inflection point on the image-side surface, which is the closest to the optical axis is denoted by SGI111.
(65) The first lens satisfies SGI120=0 mm; SGI122=4.2315 mm; |SGI112|/(|SGI112|+TP1)=0; |SGI122|/(|SGI122|+TP1)=0.6502, where a displacement in parallel with the optical axis from a point on the object-side surface of the first lens, through which the optical axis passes, to the inflection point on the image-side surface, which is the second closest to the optical axis is denoted by SGI112, and a displacement in parallel with the optical axis from a point on the image-side surface of the first lens, through which the optical axis passes, to the inflection point on the image-side surface, which is the second closest to the optical axis is denoted by SGI122.
(66) The first lens satisfies HIF111=12.8432 mm; HIF111/HOI=1.7127; HIF121=7.1744 mm; HIF121/HOI=0.9567, where a displacement perpendicular to the optical axis from a point on the object-side surface of the first lens, through which the optical axis passes, to the inflection point, which is the closest to the optical axis is denoted by HIF111, and a displacement perpendicular to the optical axis from a point on the image-side surface of the first lens, through which the optical axis passes, to the inflection point, which is the closest to the optical axis is denoted by HIF121.
(67) The first lens satisfies HIF112=0 mm; HIF112/HOI=0; HIF122=9.8592 mm; HIF122/HOI=1.3147, where a displacement perpendicular to the optical axis from a point on the object-side surface of the first lens, through which the optical axis passes, to the inflection point, which is the second closest to the optical axis is denoted by HIF112, and a displacement perpendicular to the optical axis from a point on the image-side surface of the first lens, through which the optical axis passes, to the inflection point, which is the second closest to the optical axis is denoted by HIF122.
(68) The second lens 120 has positive refractive power and is made of plastic. An object-side surface 122 thereof, which faces the object side, is a convex aspheric surface, and an image-side surface 124 thereof, which faces the image side, is a concave aspheric surface. A thickness of the second lens 120 on the optical axis is TP2, and thickness of the second lens 120 at the height of a half of the entrance pupil diameter (HEP) is denoted by ETP2.
(69) For the second lens, a displacement in parallel with the optical axis from a point on the object-side surface of the second lens, through which the optical axis passes, to the inflection point on the image-side surface, which is the closest to the optical axis is denoted by SGI211, and a displacement in parallel with the optical axis from a point on the image-side surface of the second lens, through which the optical axis passes, to the inflection point on the image-side surface, which is the closest to the optical axis is denoted by SGI221.
(70) For the second lens, a displacement perpendicular to the optical axis from a point on the object-side surface of the second lens, through which the optical axis passes, to the inflection point, which is the closest to the optical axis is denoted by HIF211, and a displacement perpendicular to the optical axis from a point on the image-side surface of the second lens, through which the optical axis passes, to the inflection point, which is the closest to the optical axis is denoted by HIF221.
(71) The third lens 130 has negative refractive power and is made of plastic. An object-side surface 132, which faces the object side, is a convex aspheric surface, and an image-side surface 134, which faces the image side, is a concave aspheric surface. A thickness of the third lens 130 on the optical axis is TP3, and a thickness of the third lens 130 at the height of a half of the entrance pupil diameter (HEP) is denoted by ETP3.
(72) For the third lens 130, SGI311 is a displacement in parallel with the optical axis, from a point on the object-side surface of the third lens, through which the optical axis passes, to the inflection point on the object-side surface, which is the closest to the optical axis, and SGI321 is a displacement in parallel with the optical axis, from a point on the image-side surface of the third lens, through which the optical axis passes, to the inflection point on the image-side surface, which is the closest to the optical axis.
(73) For the third lens 130, SGI312 is a displacement in parallel with the optical axis, from a point on the object-side surface of the third lens, through which the optical axis passes, to the inflection point on the object-side surface, which is the second closest to the optical axis, and SGI322 is a displacement in parallel with the optical axis, from a point on the image-side surface of the third lens, through which the optical axis passes, to the inflection point on the object-side surface, which is the second closest to the optical axis.
(74) For the third lens 130, HIF311 is a distance perpendicular to the optical axis between the inflection point on the object-side surface of the third lens, which is the closest to the optical axis, and the optical axis; HIF321 is a distance perpendicular to the optical axis between the inflection point on the image-side surface of the third lens, which is the closest to the optical axis, and the optical axis.
(75) For the third lens 130, HIF312 is a distance perpendicular to the optical axis between the inflection point on the object-side surface of the third lens, which is the second closest to the optical axis, and the optical axis; HIF322 is a distance perpendicular to the optical axis between the inflection point on the image-side surface of the third lens, which is the second closest to the optical axis, and the optical axis.
(76) The fourth lens 140 has positive refractive power and is made of plastic. An object-side surface 142, which faces the object side, is a convex aspheric surface, and an image-side surface 144, which faces the image side, is a convex aspheric surface. The object-side surface 142 has an inflection point. A thickness of the fourth lens 140 on the optical axis is TP4, and a thickness of the fourth lens 140 at the height of a half of the entrance pupil diameter (HEP) is denoted by ETP4.
(77) The fourth lens 140 satisfies SGI411=0.0018 mm; |SGI411|/(|SGI411|+TP4)=0.0009, where SGI411 is a displacement in parallel with the optical axis, from a point on the object-side surface of the fourth lens, through which the optical axis passes, to the inflection point on the object-side surface, which is the closest to the optical axis, and SGI421 is a displacement in parallel with the optical axis, from a point on the image-side surface of the fourth lens, through which the optical axis passes, to the inflection point on the image-side surface, which is the closest to the optical axis.
(78) For the fourth lens 140, SGI412 is a displacement in parallel with the optical axis, from a point on the object-side surface of the fourth lens, through which the optical axis passes, to the inflection point on the object-side surface, which is the second closest to the optical axis, and SGI422 is a displacement in parallel with the optical axis, from a point on the image-side surface of the fourth lens, through which the optical axis passes, to the inflection point on the object-side surface, which is the second closest to the optical axis.
(79) The fourth lens 140 further satisfies HIF411=0.7191 mm; HIF411/HOI=0.0959, where HIF411 is a distance perpendicular to the optical axis between the inflection point on the object-side surface of the fourth lens, which is the closest to the optical axis, and the optical axis; HIF421 is a distance perpendicular to the optical axis between the inflection point on the image-side surface of the fourth lens, which is the closest to the optical axis, and the optical axis.
(80) For the fourth lens 140, HIF412 is a distance perpendicular to the optical axis between the inflection point on the object-side surface of the fourth lens, which is the second closest to the optical axis, and the optical axis; HIF422 is a distance perpendicular to the optical axis between the inflection point on the image-side surface of the fourth lens, which is the second closest to the optical axis, and the optical axis.
(81) The fifth lens 150 has positive refractive power and is made of plastic. An object-side surface 152, which faces the object side, is a concave aspheric surface, and an image-side surface 154, which faces the image side, is a convex aspheric surface. The object-side surface 152 and the image-side surface 154 both have an inflection point. A thickness of the fifth lens 150 on the optical axis is TP5, and a thickness of the fifth lens 150 at the height of a half of the entrance pupil diameter (HEP) is denoted by ETP5.
(82) The fifth lens 150 satisfies SGI511=0.1246 mm; SGI521=2.1477 mm; |SGI511|/(|SGI511|+TP5)=0.0284; |SGI521|/(SGI211+TP5)=0.3346, where SGI511 is a displacement in parallel with the optical axis, from a point on the object-side surface of the fifth lens, through which the optical axis passes, to the inflection point on the object-side surface, which is the closest to the optical axis, and SGI521 is a displacement in parallel with the optical axis, from a point on the image-side surface of the fifth lens, through which the optical axis passes, to the inflection point on the image-side surface, which is the closest to the optical axis.
(83) For the fifth lens 150, SGI512 is a displacement in parallel with the optical axis, from a point on the object-side surface of the fifth lens, through which the optical axis passes, to the inflection point on the object-side surface, which is the second closest to the optical axis, and SGI522 is a displacement in parallel with the optical axis, from a point on the image-side surface of the fifth lens, through which the optical axis passes, to the inflection point on the object-side surface, which is the second closest to the optical axis.
(84) The fifth lens 150 further satisfies HIF511=3.8179 mm; HIF521=4.5480 mm; HIF511/HOI=0.5091; HIF521/HOI=0.6065, where HIF511 is a distance perpendicular to the optical axis between the inflection point on the object-side surface of the fifth lens, which is the closest to the optical axis, and the optical axis; HIF521 is a distance perpendicular to the optical axis between the inflection point on the image-side surface of the fifth lens, which is the closest to the optical axis, and the optical axis.
(85) For the fifth lens 150, HIF512 is a distance perpendicular to the optical axis between the inflection point on the object-side surface of the fifth lens, which is the second closest to the optical axis, and the optical axis; HIF522 is a distance perpendicular to the optical axis between the inflection point on the image-side surface of the fifth lens, which is the second closest to the optical axis, and the optical axis.
(86) The sixth lens 160 has negative refractive power and is made of plastic. An object-side surface 162, which faces the object side, is a convex aspheric surface, and an image-side surface 164, which faces the image side, is a concave aspheric surface. The object-side surface 162 and the image-side surface 164 both have an inflection point. Whereby, the incident angle of each view field entering the sixth lens 160 can be effectively adjusted to improve aberration. A thickness of the sixth lens 160 on the optical axis is TP6, and a thickness of the sixth lens 160 at the height of a half of the entrance pupil diameter (HEP) is denoted by ETP6.
(87) The sixth lens 160 satisfies SGI611=0.3208 mm; SGI621=0.5937 mm; |SGI611|/(|SGI611|+TP6)=0.5167; |SGI621|/(|SGI621|+TP6)=0.6643, where SGI611 is a displacement in parallel with the optical axis, from a point on the object-side surface of the sixth lens, through which the optical axis passes, to the inflection point on the object-side surface, which is the closest to the optical axis, and SGI621 is a displacement in parallel with the optical axis, from a point on the image-side surface of the sixth lens, through which the optical axis passes, to the inflection point on the image-side surface, which is the closest to the optical axis.
(88) The sixth lens 160 further satisfies HIF611=1.9655 mm; HIF621=2.0041 mm; HIF611/HOI=0.2621; HIF621/HOI=0.2672, where HIF611 is a distance perpendicular to the optical axis between the inflection point on the object-side surface of the sixth lens, which is the closest to the optical axis, and the optical axis; HIF621 is a distance perpendicular to the optical axis between the inflection point on the image-side surface of the sixth lens, which is the closest to the optical axis, and the optical axis.
(89) The seventh lens 170 has positive refractive power and is made of plastic. An object-side surface 172, which faces the object side, is a convex aspheric surface, and an image-side surface 174, which faces the image side, is a concave aspheric surface. The object-side surface 172 and the image-side surface 174 both have an inflection point. A thickness of the seventh lens 170 on the optical axis is TP7, and a thickness of the seventh lens 170 at the height of a half of the entrance pupil diameter (HEP) is denoted by ETP7.
(90) The seventh lens 170 satisfies SGI711=0.5212 mm; SGI721=0.5668 mm; |SGI711|/(|SGI711|+TP7)=0.3179; SGI7211/(SGI721+TP7)=0.3364, where SGI711 is a displacement in parallel with the optical axis, from a point on the object-side surface of the seventh lens, through which the optical axis passes, to the inflection point on the object-side surface, which is the closest to the optical axis, and SGI721 is a displacement in parallel with the optical axis, from a point on the image-side surface of the seventh lens, through which the optical axis passes, to the inflection point on the image-side surface, which is the closest to the optical axis.
(91) The seventh lens 170 further satisfies HIF711=1.6707 mm; HIF721=1.8616 mm; HIF711/HOI=0.2228; HIF721/HOI=0.2482, where HIF711 is a distance perpendicular to the optical axis between the inflection point on the object-side surface of the seventh lens, which is the closest to the optical axis, and the optical axis; HIF721 is a distance perpendicular to the optical axis between the inflection point on the image-side surface of the seventh lens, which is the closest to the optical axis, and the optical axis.
(92) A distance in parallel with the optical axis between a coordinate point at a height of HEP on the object-side surface of the first lens 110 and the image plane is ETL, and a distance in parallel with the optical axis between the coordinate point at the height of HEP on the object-side surface of the first lens 110 and a coordinate point at a height of HEP on the image-side surface of the seventh lens 140 is EIN, which satisfies: ETL=26.980 mm; EIN=24.999 mm; EIN/ETL=0.927.
(93) The optical image capturing system of the first embodiment satisfies: ETP1=2.470 mm; ETP2=5.144 mm; ETP3=0.898 mm; ETP4=1.706 mm; ETP5=3.901 mm; ETP6=0.528 mm; ETP7=1.077 mm. The sum of the aforementioned ETP1 to ETP7 is SETP, wherein SETP=15.723 mm. In addition, TP1=2.276 mm; TP2=5.240 mm; TP3=0.837 mm; TP4=2.002 mm; TP5=4.271 mm; TP6=0.300 mm; TP7=1.118 mm. The sum of the aforementioned TP1 to TP7 is STP, wherein STP=16.044 mm. In addition, SETP/STP=0.980, and SETP/EIN=0.629.
(94) In order to enhance the ability of correcting aberration and to lower the difficulty of manufacturing at the same time, the ratio between the thickness (ETP) at the height of a half of the entrance pupil diameter (HEP) and the thickness (TP) of any lens on the optical axis (i.e., ETP/TP) in the optical image capturing system of the first embodiment is particularly controlled, which satisfies: ETP1/TP1=1.085; ETP2/TP2=0.982; ETP3/TP3=1.073; ETP4/TP4=0.852; ETP5/TP5=0.914; ETP6/TP6=1.759; ETP7/TP7=0.963.
(95) In order to enhance the ability of correcting aberration, lower the difficulty of manufacturing, and slightly shortening the length of the optical image capturing system at the same time, the ratio between the horizontal distance (ED) between two neighboring lenses at the height of a half of the entrance pupil diameter (HEP) and the parallel distance (IN) between these two neighboring lens on the optical axis (i.e., ED/IN) in the optical image capturing system of the first embodiment is particularly controlled, which satisfies: the horizontal distance between the first lens 110 and the second lens 120 at the height of a half of the entrance pupil diameter (HEP) is denoted by ED12, wherein ED12=4.474 mm; the horizontal distance between the second lens 120 and the third lens 130 at the height of a half of the entrance pupil diameter (HEP) is denoted by ED23, wherein ED23=0.349 mm; the horizontal distance between the third lens 130 and the fourth lens 140 at the height of a half of the entrance pupil diameter (HEP) is denoted by ED34, wherein ED34=1.660 mm; the horizontal distance between the fourth lens 140 and the fifth lens 150 at the height of a half of the entrance pupil diameter (HEP) is denoted by ED45, wherein ED45=1.794 mm; the horizontal distance between the fifth lens 150 and the sixth lens 160 at the height of a half of the entrance pupil diameter (HEP) is denoted by ED56, wherein ED56=0.714 mm; the horizontal distance between the sixth lens 160 and the seventh lens 170 at the height of a half of the entrance pupil diameter (HEP) is denoted by ED67, wherein ED67=0.284 mm. The sum of the aforementioned ED12 to ED67 is SED, wherein SED-9.276 mm.
(96) The horizontal distance between the first lens 110 and the second lens 120 on the optical axis is denoted by IN12, wherein IN12=4.552 mm, and ED12/IN12=0.983. The horizontal distance between the second lens 120 and the third lens 130 on the optical axis is denoted by IN23, wherein IN23=0.162 mm, and ED23/IN23=2.153. The horizontal distance between the third lens 130 and the fourth lens 140 on the optical axis is denoted by IN34, wherein IN34=1.927 mm, and ED34/IN34=0.862. The horizontal distance between the fourth lens 140 and the fifth lens 150 on the optical axis is denoted by IN45, wherein IN45=1.515 mm, and ED45/IN45=1.184. The horizontal distance between the fifth lens 150 and the sixth lens 160 on the optical axis is denoted by IN56, wherein IN56=0.050 mm, and ED56/IN56=14.285. The horizontal distance between the sixth lens 160 and the seventh lens 170 on the optical axis is denoted by IN67, wherein IN67=0.211 mm, and ED67/IN67=1.345. The sum of the aforementioned IN12 to IN67 is denoted by SIN, wherein SIN=8.418, and SED/SIN=1.102.
(97) The optical image capturing system of the first embodiment satisfies: ED12/ED23=12.816; ED23/ED34=0.210; ED34/ED45=0.925; ED45/ED56=2.512; ED56/ED67=2.512; IN12/IN23=28.080; IN23/IN34=0.084; IN34/IN45=1.272; IN45/IN56=30.305; IN56/IN67=0.236.
(98) The horizontal distance in parallel with the optical axis between a coordinate point at the height of HEP on the image-side surface of the seventh lens 170 and image surface is denoted by EBL, wherein EBL=1.982 mm. The horizontal distance in parallel with the optical axis between the point on the image-side surface of the seventh lens 170 where the optical axis passes through and the image plane is denoted by BL, wherein BL=2.517 mm. The optical image capturing system of the first embodiment satisfies: EBL/BL=0.7874. The horizontal distance in parallel with the optical axis between the coordinate point at the height of HEP on the image-side surface of the seventh lens 170 and the infrared rays filter 180 is denoted by EIR, wherein EIR=0.865 mm. The horizontal distance in parallel with the optical axis between the point on the image-side surface of the seventh lens 170 where the optical axis passes through and the infrared rays filter 180 is denoted by PIR, wherein PIR=1.400 mm, and it satisfies: EIR/PIR=0.618.
(99) The description below and the features related to inflection points are obtained based on main reference wavelength of 555 nm.
(100) The infrared rays filter 180 is made of glass and between the seventh lens 170 and the image plane 190. The infrared rays filter 180 gives no contribution to the focal length of the system.
(101) The optical image capturing system 10 of the first embodiment has the following parameters, which are f-=4.3019 mm; f/HEP=1.2; HAF=59.9968 degrees; and tan(HAF)=1.7318, where f is a focal length of the system; HAF is a half of the maximum field angle; and HEP is an entrance pupil diameter.
(102) The parameters of the lenses of the first embodiment are f1=14.5286 mm; |f/f1|=0.2961; f7=8.2933; |f1|>f7; and |f1/f7|=1.7519, where f1 is a focal length of the first lens 110; and f7 is a focal length of the seventh lens 170.
(103) The first embodiment further satisfies |f2|+|f3|+|f4|+|f5|+|f6|=144.7494; |f1|+|f7|=22.8219 and |f2|+|f3|+|f4|+|f5|+|f6|>|f1|+|f7|, where f2 is a focal length of the second lens 120, f3 is a focal length of the third lens 130, f4 is a focal length of the fourth lens 140, f5 is a focal length of the fifth lens 150, f6 is a focal length of the sixth lens 160, and f1 is a focal length of the seventh lens 170.
(104) The optical image capturing system 10 of the first embodiment further satisfies PPR=f/f2+f/f4+f/f5+f/f7=1.7384; NPR=f/f1+f/f3+f/f=0.9999; PPR/|NPR|=1.7386; |f/f2|=0.1774; |f/f3|=0.0443; |f/f4|=0.4411; |f/f5|=0.6012; |f/f6|=0.6595; |f/f7|=0.5187, where PPR is a ratio of a focal length f of the optical image capturing system to a focal length fp of each of the lenses with positive refractive power; and NPR is a ratio of a focal length f of the optical image capturing system to a focal length fn of each of lenses with negative refractive power.
(105) The optical image capturing system 10 of the first embodiment further satisfies InTL+BFL=HOS; HOS=26.9789 mm; HOI=7.5 mm; HOS/HOI=3.5977; HOS/f=6.2715; InS=12.4615 mm; and InS/HOS=0.4619, where InTL is a distance between the object-side surface 112 of the first lens 110 and the image-side surface 174 of the seventh lens 170; HOS is a height of the image capturing system, i.e. a distance between the object-side surface 112 of the first lens 110 and the image plane 190; InS is a distance between the aperture 100 and the image plane 190; HOI is a half of a diagonal of an effective sensing area of the image sensor 192, i.e., the maximum image height; and BFL is a distance between the image-side surface 174 of the seventh lens 170 and the image plane 190.
(106) The optical image capturing system 10 of the first embodiment further satisfies TP=16.0446 mm; and TP/InTL=0.6559, where TP is a sum of the thicknesses of the lenses 110-150 with refractive power. It is helpful for the contrast of image and yield rate of manufacture and provides a suitable back focal length for installation of other elements.
(107) The optical image capturing system 10 of the first embodiment further satisfies |R1/R2|=129.9952, where R1 is a radius of curvature of the object-side surface 112 of the first lens 110, and R2 is a radius of curvature of the image-side surface 114 of the first lens 110. It provides the first lens with a suitable positive refractive power to reduce the increase rate of the spherical aberration.
(108) The optical image capturing system 10 of the first embodiment further satisfies (R13R14)/(R13+R14)=0.0806, where R13 is a radius of curvature of the object-side surface 172 of the seventh lens 170, and R14 is a radius of curvature of the image-side surface 174 of the seventh lens 170. It may modify the astigmatic field curvature.
(109) The optical image capturing system 10 of the first embodiment further satisfies PP=f2+f4+f5+f7=49.4535 mm; and f4/(f2+f4+f5+f7)=0.1972, where PP is a sum of the focal lengths fp of each lens with positive refractive power. It is helpful to share the positive refractive power of the fourth lens 140 to other positive lenses to avoid the significant aberration caused by the incident rays.
(110) The optical image capturing system 10 of the first embodiment further satisfies NP=f1+f3+f6=118.1178 mm; and f1/(f1+f3+f6)=0.1677, where NP is a sum of the focal lengths fn of each lens with negative refractive power. It is helpful to share the negative refractive power of the first lens 110 to the other negative lens, which avoid the significant aberration caused by the incident rays.
(111) The optical image capturing system 10 of the first embodiment further satisfies IN12=4.5524 mm; IN12/f=1.0582, where IN12 is a distance on the optical axis between the first lens 110 and the second lens 120. It may correct chromatic aberration and improve the performance.
(112) The optical image capturing system 10 of the first embodiment further satisfies TP1=2.2761 mm; TP2=0.2398 mm; and (TP1+IN12)/TP2=1.3032, where TP1 is a central thickness of the first lens 110 on the optical axis, and TP2 is a central thickness of the second lens 120 on the optical axis. It may control the sensitivity of manufacture of the system and improve the performance.
(113) The optical image capturing system 10 of the first embodiment further satisfies TP6=0.3000 mm; TP7=1.1182 mm; and (TP7+IN67)/TP6=4.4322, where TP6 is a central thickness of the sixth lens 160 on the optical axis, TP7 is a central thickness of the seventh lens 170 on the optical axis, and IN67 is a distance on the optical axis between the sixth lens 160 and the seventh lens 170. It may control the sensitivity of manufacture of the system and lower the total height of the system.
(114) The optical image capturing system 10 of the first embodiment further satisfies TP3=0.8369 mm; TP4=2.0022 mm; TP5=4.2706 mm; IN34=1.9268 mm; IN45=1.5153 mm; and TP4/(IN34+TP4+IN45)=0.3678, where TP3 is a central thickness of the third lens 130 on the optical axis, TP4 is a central thickness of the fourth lens 140 on the optical axis, TP5 is a central thickness of the fifth lens 150 on the optical axis; IN34 is a distance on the optical axis between the third lens 130 and the fourth lens 140; IN45 is a distance on the optical axis between the fourth lens 140 and the fifth lens 150; InTL is a distance between the object-side surface 112 of the first lens 110 and the image-side surface 174 of the seventh lens 170. It may control the sensitivity of manufacture of the system and lower the total height of the system.
(115) The optical image capturing system 10 of the first embodiment further satisfies InRS61=0.7823 mm; InRS62=0.2166 mm; and |InRS62|/TP6=0.722, where InRS61 is a displacement from a point on the object-side surface 162 of the sixth lens 160 passed through by the optical axis to a point on the optical axis where a projection of the maximum effective semi diameter of the object-side surface 162 of the sixth lens 160 ends; InRS62 is a displacement from a point on the image-side surface 164 of the sixth lens 160 passed through by the optical axis to a point on the optical axis where a projection of the maximum effective semi diameter of the image-side surface 164 of the sixth lens 160 ends; and TP6 is a central thickness of the sixth lens 160 on the optical axis. It is helpful for manufacturing and shaping of the lenses and is helpful to reduce the size.
(116) The optical image capturing system 10 of the first embodiment further satisfies HVT61=3.3498 mm; HVT62=3.9860 mm; and HVT61/HVT62=0.8404, where HVT61 is a distance perpendicular to the optical axis between the critical point on the object-side surface 162 of the sixth lens 160 and the optical axis; and HVT62 is a distance perpendicular to the optical axis between the critical point on the image-side surface 164 of the sixth lens 160 and the optical axis.
(117) The optical image capturing system 10 of the first embodiment further satisfies InRS71=0.2756 mm; InRS72=0.0938 mm; and |InRS72|/TP7=0.0839, where InRS71 is a displacement from a point on the object-side surface 172 of the seventh lens 170 passed through by the optical axis to a point on the optical axis where a projection of the maximum effective semi diameter of the object-side surface 172 of the seventh lens 170 ends; InRS72 is a displacement from a point on the image-side surface 174 of the seventh lens 170 passed through by the optical axis to a point on the optical axis where a projection of the maximum effective semi diameter of the image-side surface 174 of the seventh lens 170 ends; and TP7 is a central thickness of the seventh lens 170 on the optical axis. It is helpful for manufacturing and shaping of the lenses and is helpful to reduce the size.
(118) The optical image capturing system 10 of the first embodiment satisfies HVT71=3.6822 mm; HVT72=4.0606 mm; and HVT71/HVT72=0.9068, where HVT71 is a distance perpendicular to the optical axis between the critical point on the object-side surface 172 of the seventh lens 170 and the optical axis; and HVT72 is a distance perpendicular to the optical axis between the critical point on the image-side surface 174 of the seventh lens 170 and the optical axis.
(119) The optical image capturing system 10 of the first embodiment satisfies HVT72/HOI=0.5414. It is helpful for correction of the aberration of the peripheral view field of the optical image capturing system.
(120) The optical image capturing system 10 of the first embodiment satisfies HVT72/HOS=0.1505. It is helpful for correction of the aberration of the peripheral view field of the optical image capturing system.
(121) The second lens 120, the third lens 130, and the seventh lens 170 have negative refractive power. The optical image capturing system 10 of the first embodiment further satisfies 1NA7/NA2, where NA2 is an Abbe number of the second lens 120; NA3 is an Abbe number of the third lens 130; and NA7 is an Abbe number of the seventh lens 170. It may correct the aberration of the optical image capturing system.
(122) The optical image capturing system 10 of the first embodiment further satisfies |TDT|=2.5678%; |ODT|=2.1302%, where TDT is TV distortion; and ODT is optical distortion.
(123) For the optical image capturing system of the first embodiment, the values of MTF in the spatial frequency of 55 cycles/mm at the optical axis, 0.3 field of view, and 0.7 field of view of visible light on an image plane are respectively denoted by MTFE0, MTFE3, and MTFE7, wherein MTFE0 is around 0.35, MTFE3 is around 0.14, and MTEF7 is around 0.28; the values of MTF in the spatial frequency of 110 cycles/mm at the optical axis, 0.3 field of view, and 0.7 field of view of visible light on an image plane are respectively denoted by MTFQ0, MTFQ3, and MTFQ7, wherein MTFQ0 is around 0.126, MTFQ3 is around 0.075, and MTFQ7 is around 0.177; the values of modulation transfer function (MTF) in the spatial frequency of 220 cycles/mm at the optical axis, 0.3 field of view, and 0.7 field of view on an image plane are respectively denoted by MTFH0, MTFH3, and MTFH7, wherein MTFH0 is around 0.01, MTFH3 is around 0.01, and MTFH7 is around 0.01.
(124) For the optical image capturing system of the first embodiment, when the infrared of wavelength of 850 nm focuses on the image plane, the values of MTF in spatial frequency (55 cycles/mm) at the optical axis, 0.3 HOI, and 0.7 HOI on an image plane are respectively denoted by MTFI0, MTFI3, and MTFI7, wherein MTFI0 is around 0.01, MTFI3 is around 0.01, and MTFI7 is around 0.01.
(125) In the optical image capturing system of the first embodiment, all image-side bearing surfaces and all object-side bearing surfaces are designed as extending toward the image plane, and each of them intersects the optical axis at an included angle. All IAGs and all OAGs are equal, which are 90 degrees. The lens could form a stack structure through the contact surfaces which are engaged with each other, wherein a contour length of said all contact surfaces on a radial direction is denoted as BSL, which satisfies BSL=0.1 mm.
(126) The parameters of the lenses of the first embodiment are listed in Table 1 and Table 2.
(127) TABLE-US-00001 TABLE 1 f = 4.3019 mm; f/HEP = 1.2; HAF = 59.9968 deg Focal Thickness Refractive Abbe length Surface Radius of curvature (mm) (mm) Material index number (mm) 0 Object plane infinity 1 1.sup.st lens 1079.499964 2.276 plastic 1.565 58.00 14.53 2 8.304149657 4.552 3 2.sup.nd lens 14.39130913 5.240 plastic 1.650 21.40 24.25 4 130.0869482 0.162 5 3.sup.rd lens 8.167310118 0.837 plastic 1.650 21.40 97.07 6 6.944477468 1.450 7 Aperture plane 0.477 8 4.sup.th lens 121.5965254 2.002 plastic 1.565 58.00 9.75 9 5.755749302 1.515 10 5.sup.th lens 86.27705938 4.271 plastic 1.565 58.00 7.16 11 3.942936258 0.050 12 6.sup.th lens 4.867364751 0.300 plastic 1.650 21.40 6.52 13 2.220604983 0.211 14 7.sup.th lens 1.892510651 1.118 plastic 1.650 21.40 8.29 15 2.224128115 1.400 16 Infrared rays filter plane 0.200 BK_7 1.517 64.2 17 plane 0.917 18 Image plane plane Reference wavelength (d-line): 555 mm.
(128) TABLE-US-00002 TABLE 2 Coefficients of the aspheric surfaces Surface 1 2 3 4 5 6 8 k 2.500000E+01 4.711931E01 1.531617E+00 1.153034E+01 2.915013E+00 4.886991E+00 3.459463E+01 A4 5.236918E06 2.117558E04 7.146736E05 4.353586E04 5.793768E04 3.756697E04 1.292614E03 A6 3.014384E08 1.838670E06 2.334364E06 1.400287E05 2.112652E04 3.901218E04 1.602381E05 A8 2.487400E10 9.605910E09 7.479362E08 1.688929E07 1.344586E05 4.925422E05 8.452359E06 A10 1.170000E12 8.256000E11 1.701570E09 3.829807E08 1.000482E06 4.139741E06 7.243999E07 A12 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 A14 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 Surface 9 10 11 12 13 14 15 k 7.549291E+00 5.000000E+01 1.740728E+00 4.709650E+00 4.509781E+00 3.427137E+00 3.215123E+00 A4 5.583548E03 1.240671E04 6.467538E04 1.872317E03 8.967310E04 3.189453E03 2.815022E03 A6 1.947110E04 4.949077E05 4.981838E05 1.523141E05 2.688331E05 1.058126E05 1.884580E05 A8 1.486947E05 2.088854E06 9.129031E07 2.169414E06 8.324958E07 1.760103E06 1.017223E08 A10 6.501246E08 1.438383E08 7.108550E09 2.308304E08 6.184250E09 4.730294E08 3.660000E12 A12 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 A14 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00
(129) The detail parameters of the first embodiment are listed in Table 1, in which the unit of the radius of curvature, thickness, and focal length are millimeter, and surface 0-10 indicates the surfaces of all elements in the system in sequence from the object side to the image side. Table 2 is the list of coefficients of the aspheric surfaces, in which A1-A20 indicate the coefficients of aspheric surfaces from the first order to the twentieth order of each aspheric surface. The following embodiments have the similar diagrams and tables, which are the same as those of the first embodiment, so we do not describe it again.
Second Embodiment
(130) As shown in
(131) The first lens 210 has negative refractive power and is made of glass. An object-side surface 212 thereof, which faces the object side, is a convex surface, and an image-side surface 214 thereof, which faces the image side, is a concave surface.
(132) The second lens 220 has negative refractive power and is made of glass. An object-side surface 222 thereof, which faces the object side, is a concave surface, and an image-side surface 224 thereof, which faces the image side, is a concave surface.
(133) The third lens 230 has positive refractive power and is made of plastic. An object-side surface 232, which faces the object side, is a convex aspheric surface, and an image-side surface 234, which faces the image side, is a convex aspheric surface.
(134) The fourth lens 240 has positive refractive power and is made of glass. An object-side surface 242, which faces the object side, is a convex surface, and an image-side surface 244, which faces the image side, is a convex surface.
(135) The fifth lens 250 has negative refractive power and is made of plastic. An object-side surface 252, which faces the object side, is a concave aspheric surface, and an image-side surface 254, which faces the image side, is a concave aspheric surface. The image-side surface 254 has an inflection point.
(136) The sixth lens 260 has positive refractive power and is made of plastic. An object-side surface 262, which faces the object side, is a convex aspheric surface, and an image-side surface 264, which faces the image side, is a convex aspheric surface. The image-side surface 264 has an inflection point. Whereby, the incident angle of each view field entering the sixth lens 260 can be effectively adjusted to improve aberration.
(137) The seventh lens 270 has positive refractive power and is made of plastic. An object-side surface 272, which faces the object side, is a convex surface, and an image-side surface 274, which faces the image side, is a concave surface. It may help to shorten the back focal length to keep small in size. In addition, the image-side surface 274 has two inflection points, which may reduce an incident angle of the light of an off-axis field of view and correct the aberration of the off-axis field of view.
(138) The infrared rays filter 280 is made of glass and between the seventh lens 270 and the image plane 290. The infrared rays filter 280 gives no contribution to the focal length of the system.
(139) The parameters of the lenses of the second embodiment are listed in Table 3 and Table 4.
(140) TABLE-US-00003 TABLE 3 f = 3.4371 mm; f/HEP = 1.2; HAF = 100 deg Focal Radius of Thickness Refractive Abbe length Surface curvature (mm) (mm) Material index number (mm) 0 Object 1E+18 1E+18 1 1.sup.st lens 86.50757318 9.279 glass 1.639 44.87 22.937 2 12.05392749 8.473 3 2.sup.nd lens 37.44949696 2.801 glass 1.497 81.61 14.200 4 8.93672877 6.190 5 3.sup.rd lens 51.88883742 24.538 plastic 1.565 54.50 20.903 6 12.72923643 1.247 7 Aperture 1E+18 2.521 8 4.sup.th lens 10.10585928 6.786 glass 1.497 81.61 16.530 9 34.53027878 2.035 10 5.sup.th lens 26.46080081 1.608 plastic 1.650 21.40 6.881 11 5.567221984 0.237 12 6.sup.th lens 7.145920088 4.996 plastic 1.565 58.00 9.546 13 16.64147034 0.480 14 7.sup.th lens 8.716076519 3.650 plastic 1.565 58.00 26.389 15 17.72512039 1.000 16 Infrared 1E+18 0.300 BK_7 1.517 64.2 rays filter 17 1E+18 0.738 18 Image 1E+18 0.003 plane Reference wavelength (d-line): 555 nm
(141) TABLE-US-00004 TABLE 4 Coefficients of the aspheric surfaces Surface 1 2 3 4 5 6 8 k 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 1.146735E+01 2.785265E+00 0.000000E+00 A4 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 3.949023E06 5.401769E05 0.000000E+00 A6 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 8.219508E07 4.584962E07 0.000000E+00 A8 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 6.550587E09 7.306179E09 0.000000E+00 A10 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 1.404898E10 9.450697E11 0.000000E+00 A12 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 A14 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 A16 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 Surface 9 10 11 12 13 14 15 k 0.000000E+00 5.261186E+00 2.471963E+00 3.876077E+00 1.283379E+01 2.542249E01 1.473798E+01 A4 0.000000E+00 1.895950E04 1.224866E05 3.705964E04 2.125013E04 1.418949E05 4.619094E04 A6 0.000000E+00 4.999297E07 3.303553E06 5.472397E06 1.472010E05 1.322261E06 6.666258E06 A8 0.000000E+00 5.663454E08 6.429313E08 3.533160E08 7.955680E09 1.831555E07 1.307515E07 A10 0.000000E+00 8.225956E10 3.863433E10 2.607466E10 1.689258E08 7.925925E09 2.829544E08 A12 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 A14 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 A16 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00
(142) An equation of the aspheric surfaces of the second embodiment is the same as that of the first embodiment, and the definitions are the same as well.
(143) The exact parameters of the second embodiment based on Table 3 and Table 4 are listed in the following table:
(144) TABLE-US-00005 Second embodiment (Reference wavelength: 555 nm) ETP1 ETP2 ETP3 ETP4 ETP5 ETP6 9.353 2.944 24.437 6.654 1.827 4.796 ETP7 ETL EBL EIN EIR PIR 3.586 74.377 1.986 72.390 0.945 1.000 EIN/ETL SETP/EIN EIR/PIR SETP STP SETP/STP 0.973 0.740 0.945 53.598 53.658 0.999 ETP1/TP1 ETP2/TP2 ETP3/TP3 ETP4/TP4 ETP5/TP5 ETP6/TP6 1.008 1.051 0.996 0.981 1.137 0.960 ETP7/TP7 BL EBL/BL SED SIN SED/SIN 0.982 2.041 0.973 18.793 18.690 1.006 ED12 ED23 ED34 ED45 ED56 ED67 8.361 6.095 1.457 2.025 0.198 0.658 ED12/IN12 ED23/IN23 ED34/IN34 ED45/IN45 ED56/IN56 ED67/IN67 0.987 0.985 1.143 0.995 0.836 1.371 |f/f1| |f/f2| |f/f3| |f/f4| |f/f5| |f/f6| 0.1499 0.2421 0.1644 0.2079 0.4995 0.3601 |f/f7| PPR NPR PPR/|NPR| IN12/f IN67/f 0.1302 0.8627 0.8914 0.9677 2.4653 0.1396 |f1/f2| |f2/f3| (TP1 + IN12)/TP2 (TP7 + IN67)/TP6 1.6153 0.6793 6.3386 0.8266 HOS InTL HOS/HOI InS/HOS ODT % TDT % 74.3886 72.3477 14.8777 0.3274 125.6640 93.1783 HVT11 HVT12 HVT21 HVT22 HVT31 HVT32 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 HVT61 HVT62 HVT71 HVT72 HVT72/HOI HVT72/HOS 0.0000 3.9781 0.0000 0.0000 0.0000 0.0000 MTFE0 MTFE3 MTFE7 MTFQ0 MTFQ3 MTFQ7 0.87 0.85 0.8 0.73 0.6 0.5 IAG1-IAG4 OAG1-OAG4 BSL 19 deg 19 deg 0.08 mm
(145) The results of the equations of the second embodiment based on Table 3 and Table 4 are listed in the following table:
(146) TABLE-US-00006 Values related to the inflection points of the second embodiment (Reference wavelength: 555 nm) HIF521 5.6280 HIF521/HOI 1.1256 SGI521 2.2433 |SGI521|/(|SGI521| + TP5) 0.5825 HIF621 2.6054 HIF621/HOI 0.5211 SGI621 0.1763 |SGI621|/(|SGI621| + TP6) 0.0341 HIF721 2.4743 HIF721/HOI 0.4949 SGI721 0.1437 |SGI721|/(|SGI721| + TP7) 0.0379 HIF722 3.8530 HIF722/HOI 0.7706 SGI722 0.2571 |SGI722|/(|SGI722| + TP7) 0.0658
Third Embodiment
(147) As shown in
(148) The first lens 310 has positive refractive power and is made of plastic. An object-side surface 312 thereof, which faces the object side, is a convex aspheric surface, and an image-side surface 314 thereof, which faces the image side, is a concave aspheric surface. The image-side surface 314 has two inflection points.
(149) The second lens 320 has negative refractive power and is made of plastic. An object-side surface 322 thereof, which faces the object side, is a convex aspheric surface, and an image-side surface 324 thereof, which faces the image side, is a concave aspheric surface. The object-side surface 322 and the image-side surface 324 both have an inflection point.
(150) The third lens 330 has positive refractive power and is made of plastic. An object-side surface 332 thereof, which faces the object side, is a concave aspheric surface, and an image-side surface 334 thereof, which faces the image side, is a convex aspheric surface. The object-side surface 332 and the image-side surface 334 both have an inflection point.
(151) The fourth lens 340 has positive refractive power and is made of plastic. An object-side surface 342, which faces the object side, is a concave aspheric surface, and an image-side surface 344, which faces the image side, is a convex aspheric surface. The object-side surface 342 has four inflection points, and the image-side surface has an inflection point.
(152) The fifth lens 350 has negative refractive power and is made of plastic. An object-side surface 352, which faces the object side, is a concave aspheric surface, and an image-side surface 354, which faces the image side, is a convex aspheric surface The image-side surface 354 has an inflection point.
(153) The sixth lens 360 has positive refractive power and is made of plastic. An object-side surface 362, which faces the object side, is a convex surface, and an image-side surface 364, which faces the image side, is a convex surface. The object-side surface 362 has three inflection points, and the image-side surface 364 has four inflection points. Whereby, the incident angle of each view field entering the sixth lens 360 can be effectively adjusted to improve aberration.
(154) The seventh lens 370 has negative refractive power and is made of plastic. An object-side surface 372, which faces the object side, is a concave surface, and an image-side surface 374, which faces the image side, is a concave surface. It may help to shorten the back focal length to keep small in size. In addition, the object-side surface 372 has two inflection points, and the image-side surface 374 has an inflection point, which may reduce an incident angle of the light of an off-axis field of view and correct the aberration of the off-axis field of view.
(155) The infrared rays filter 380 is made of glass and between the seventh lens 370 and the image plane 390. The infrared rays filter 390 gives no contribution to the focal length of the system.
(156) The optical image capturing system 10 of the first embodiment further satisfies PP=57.1785 mm; and f1/PP=0.2408, where PP is a sum of the focal lengths fp of each lens with positive refractive power. It is helpful to share the positive refractive power of one single lens to other positive lenses to avoid the significant aberration caused by the incident rays.
(157) The optical image capturing system 10 of the first embodiment further satisfies NP=53.3826 mm; and f2/NP=0.11533, where NP is a sum of the focal lengths fp of each lens with negative refractive power. It is helpful to share the negative refractive power of the sixth lens to other negative lenses.
(158) The parameters of the lenses of the third embodiment are listed in Table 5 and Table 6.
(159) TABLE-US-00007 TABLE 5 f = 9.5423 mm; f/HEP = 2.0; HAF = 38.0002 deg Radius of Thickness Refractive Abbe Focal length Surface curvature (mm) (mm) Material index number (mm) 0 Object plane infinity 1 1.sup.st lens 5.126953214 1.214 plastic 1.544 55.96 13.7691 2 14.77967651 0.259 3 Aperture plane 0.570 4 2.sup.nd lens 7.744320593 0.542 plastic 1.642 22.46 18.6536 5 4.589392077 0.440 6 3.sup.rd lens 27.72740863 0.922 plastic 1.544 55.96 16.899 7 7.003148313 0.126 8 4.sup.th lens 132.5407952 1.087 plastic 1.544 55.96 16.6825 9 8.545788217 1.661 10 5.sup.th lens 2.747454197 0.790 plastic 1.642 22.46 28.5748 11 3.590917294 0.100 12 6.sup.th lens 6.331804041 1.192 plastic 1.544 55.96 9.82793 13 32.79464874 1.173 14 7.sup.th lens 5.604046294 0.602 plastic 1.544 55.96 6.15416 15 8.705420907 0.465 16 Infrared plane 0.300 BK_7 1.517 64.2 rays filter 17 plane 1.300 18 Image plane 0.000 plane Reference wavelength (d-line) 555 nm.
(160) TABLE-US-00008 TABLE 6 Coefficients of the aspheric surfaces Surface 1 2 4 5 6 7 8 k 1.064649E+00 7.156630E+00 8.946824E+01 8.010624E01 1.357282E+01 9.621586E01 4.656054E+01 A4 1.358278E03 3.143285E03 3.689773E04 1.972531E02 3.856100E03 1.072596E02 1.070986E02 A6 1.537317E04 8.407030E04 1.086803E02 5.320992E04 2.894203E03 8.790456E03 7.964556E03 A8 1.520498E04 1.133322E04 5.229602E03 8.331800E04 7.813465E04 3.233125E03 2.848458E03 A10 4.144138E05 1.780766E05 1.496221E03 2.811037E04 2.147279E04 7.174150E04 5.716041E04 A12 6.312734E06 1.361900E05 2.595275E04 5.079297E05 4.021990E05 9.754134E05 6.824275E05 A14 4.305616E07 2.475022E06 2.472214E05 4.585964E06 3.710161E06 7.750199E06 4.621737E06 A16 8.866670E09 1.459490E07 9.370067E07 1.561873E07 1.333560E07 2.738341E07 1.338013E07 Surface 9 10 11 12 13 14 15 k 1.506072E+01 8.908616E01 4.153787E01 1.440067E+00 2.345828E+01 2.975038E02 3.905794E01 A4 2.328261E03 2.514134E02 1.533485E02 1.483034E02 1.243722E02 5.870219E03 4.473415E03 A6 1.112969E03 8.683162E03 3.976145E03 2.862703E03 3.059330E03 1.800358E03 3.399395E04 A8 3.524178E04 1.770667E03 6.061738E04 3.832590E04 3.034689E04 1.981376E04 2.491328E05 A10 6.261380E05 2.367895E04 5.731690E05 3.232370E05 1.366570E05 1.226012E05 1.188238E06 A12 9.114956E06 2.032129E05 3.435847E06 1.903324E06 2.484401E07 4.283668E07 3.419726E08 A14 8.301954E07 1.025564E06 1.227677E07 6.751249E08 1.089800E10 7.951930E09 5.339600E10 A16 2.944219E08 2.270383E08 2.016940E09 1.007020E09 3.193000E11 6.085000E11 3.490000E12
(161) An equation of the aspheric surfaces of the third embodiment is the same as that of the first embodiment, and the definitions are the same as well.
(162) The exact parameters of the third embodiment based on Table 5 and Table 6 are listed in the following table:
(163) TABLE-US-00009 Third embodiment (Reference wavelength: 555 nm) ETP1 ETP2 ETP3 ETP4 ETP5 ETP6 0.834 0.828 0.696 0.766 0.945 0.828 ETP7 ETL EBL EIN EIR PIR 1.270 12.225 1.861 10.364 0.261 0.465 EIN/ETL SETP/EIN EIR/PIR SETP STP SETP/STP 0.848 0.595 0.561 6.166 6.348 0.971 ETP1/TP1 ETP2/TP2 ETP3/TP3 ETP4/TP4 ETP5/TP5 ETP6/TP6 0.687 1.528 0.755 0.705 1.197 0.695 ETP7/TP7 BL EBL/BL SED SIN SED/SIN 2.109 2.065 0.9157 4.197 4.329 0.970 ED12 ED23 ED34 ED45 ED56 ED67 0.608 0.097 0.499 1.231 0.900 0.863 ED12/IN12 ED23/IN23 ED34/IN34 ED45/IN45 ED56/IN56 ED67/IN67 0.733 0.221 3.966 0.741 8.997 0.735 |f/f1| |f/f2| |f/f3| |f/f4| |f/f5| |f/f6| 0.6930 0.5116 0.5647 0.5720 0.3339 0.9709 |f/f7| PPR NPR PPR/|NPR| IN12/f IN67/f 1.5505 2.8006 2.3960 1.1689 0.0869 0.1229 |f1/f2| |f2/f3| (TP1 + IN12)/TP2 (TP7 + IN67)/TP6 0.7381 1.1038 3.7730 1.4898 HOS InTL HOS/HOI InS/HOS ODT % TDT % 12.7407 10.6762 1.6988 0.8844 1.0235 0.4634 HVT11 HVT12 HVT21 HVT22 HVT31 HVT32 0.0000 0.0000 1.3043 2.0996 2.7393 0.0000 HVT61 HVT62 HVT71 HVT72 HVT72/HOI HVT72/HOS 2.7964 4.7698 0.0000 4.0398 0.5386 0.3171 MTFE0 MTFE3 MTFE7 MTFQ0 MTFQ3 MTFQ7 0.91 0.83 0.8 0.81 0.64 0.57 IAG1-IAG4 OAG1-OAG4 BSL 19 deg 19 deg 0.08 mm
(164) The results of the equations of the third embodiment based on Table 5 and Table 6 are listed in the following table:
(165) TABLE-US-00010 Values related to the inflection points of the third embodiment (Reference wavelength: 555 nm) HIF121 2.3213 HIF121/HOI 0.3095 SGI121 0.1503 |SGI121|/(|SGI121| + TP1) 0.1102 HIF122 2.3596 HIF122/HOI 0.3146 SGI122 0.1549 |SGI122|/(|SGI122| + TP1) 0.1132 HIF211 0.7262 HIF211/HOI 0.0968 SGI211 0.0280 |SGI211|/(|SGI211| + TP2) 0.0492 HIF221 1.0711 HIF221/HOI 0.1428 SGI221 0.1024 |SGI221|/(|SGI221| + TP2) 0.1591 HIF311 2.2817 HIF311/HOI 0.3042 SGI311 0.1592 |SGI311|/(|SGI311| + TP3) 0.1473 HIF321 2.7143 HIF321/HOI 0.3619 SGI321 0.6623 |SGI321|/(|SGI321| + TP3) 0.4181 HIF411 0.2581 HIF411/HOI 0.0344 SGI411 0.0002 |SGI411|/(|SGI411| + TP4) 0.0002 HIF412 0.9763 HIF412/HOI 0.1302 SGI412 0.0012 |SGI412|/(|SGI412| + TP4) 0.0011 HIF413 1.6099 HIF413/HOI 0.2147 SGI413 0.0025 |SGI413|/(|SGI413| + TP4) 0.0023 HIF414 2.1553 HIF414/HOI 0.2874 SGI414 0.0041 |SGI414|/(|SGI414| + TP4) 0.0038 HIF421 3.1927 HIF421/HOI 0.4257 SGI421 0.7812 |SGI421|/(|SGI421| + TP4) 0.4182 HIF521 3.8199 HIF521/HOI 0.5093 SGI521 2.0739 |SGI521|/(|SGI521| + TP5) 0.7243 HIF611 1.5835 HIF611/HOI 0.2111 SGI611 0.1362 |SGI611|/(|SGI611| + TP6) 0.1026 HIF612 4.0634 HIF612/HOI 0.5418 SGI612 0.2673 |SGI612|/(|SGI612| + TP6) 0.1833 HIF613 4.3009 HIF613/HOI 0.5735 SGI613 0.4534 |SGI613|/(|SGI613| + TP6) 0.2756 HIF621 1.8405 HIF621/HOI 0.2454 SGI621 0.1107 |SGI621|/(|SGI621| + TP6) 0.0850 HIF622 2.6284 HIF622/HOI 0.3505 SGI622 0.1977 |SGI622|/(|SGI622| + TP6) 0.1423 HIF623 3.9646 HIF623/HOI 0.5286 SGI623 0.4724 |SGI623|/(|SGI623| + TP6) 0.2839 HIF624 4.9355 HIF624/HOI 0.6581 SGI624 0.6399 |SGI624|/(|SGI624| + TP6) 0.3494 HIF711 3.4061 HIF711/HOI 0.4541 SGI711 0.9805 |SGI711|/(|SGI711| + TP7) 0.6196 HIF712 5.0056 HIF712/HOI 0.6674 SGI712 1.5615 |SGI712|/(|SGI712| + TP7) 0.7217 HIF721 2.0478 HIF721/HOI 0.2730 SGI721 0.1830 |SGI721|/(|SGI721| + TP7) 0.2331
Fourth Embodiment
(166) As shown in
(167) The first lens 410 has positive refractive power and is made of plastic. An object-side surface 412 thereof, which faces the object side, is a convex aspheric surface, and an image-side surface 414 thereof, which faces the image side, is a concave aspheric surface. The image-side surface 414 has two inflection points.
(168) The second lens 420 has negative refractive power and is made of plastic. An object-side surface 422 thereof, which faces the object side, is a convex aspheric surface, and an image-side surface 424 thereof, which faces the image side, is a concave aspheric surface. The object-side surface 422 and the image-side surface 424 both have an inflection point.
(169) The third lens 430 has positive refractive power and is made of plastic. An object-side surface 432 thereof, which faces the object side, is a convex aspheric surface, and an image-side surface 434 thereof, which faces the image side, is a convex aspheric surface. The object-side surface 432 has two inflection points, and the image-side surface 434 has an inflection point.
(170) The fourth lens 440 has positive refractive power and is made of plastic. An object-side surface 442, which faces the object side, is a concave aspheric surface, and an image-side surface 444, which faces the image side, is a convex aspheric surface. The image-side surface 444 has an inflection point.
(171) The fifth lens 450 has negative refractive power and is made of plastic. An object-side surface 452, which faces the object side, is a concave aspheric surface, and an image-side surface 454, which faces the image side, is a convex aspheric surface. The image-side surface 454 has two inflection points.
(172) The sixth lens 460 has positive refractive power and is made of plastic. An object-side surface 462, which faces the object side, is a convex surface, and an image-side surface 464, which faces the image side, is a convex surface. The object-side surface 462 and the image-side surface 464 both have two inflection points. Whereby, the incident angle of each view field entering the sixth lens 460 can be effectively adjusted to improve aberration.
(173) The seventh lens 470 has negative refractive power and is made of plastic. An object-side surface 472, which faces the object side, is a concave surface, and an image-side surface 474, which faces the image side, is a concave surface. It may help to shorten the back focal length to keep small in size. In addition, the object-side surface 472 has an inflection point, which may reduce an incident angle of the light of an off-axis field of view and correct the aberration of the off-axis field of view.
(174) The infrared rays filter 480 is made of glass and between the seventh lens 470 and the image plane 490. The infrared rays filter 480 gives no contribution to the focal length of the system.
(175) The optical image capturing system 10 of the first embodiment further satisfies PP=56.0883 mm; and f1/PP=0.2233, where PP is a sum of the focal lengths fp of each lens with positive refractive power. It is helpful to share the positive refractive power of one single lens to other positive lenses to avoid the significant aberration caused by the incident rays.
(176) The optical image capturing system 10 of the first embodiment further satisfies NP=87.3758 mm; and f2/NP=0.0585, where NP is a sum of the focal lengths fp of each lens with negative refractive power. It is helpful to share the negative refractive power of the sixth lens to other negative lenses.
(177) The parameters of the lenses of the fourth embodiment are listed in Table 7 and Table 8.
(178) TABLE-US-00011 TABLE 7 f = 6.8656 mm; f/HEP = 1.8; HAF = 47.5 deg Focal Radius of Thickness Refractive Abbe length Surface curvature (mm) (mm) Material index number (mm) 0 Object plane infinity 1 1.sup.st lens 3.601476359 0.889 plastic 1.544 55.96 12.5245 2 6.947158259 0.307 3 Aperture plane 0.100 4 2.sup.nd lens 5.276720377 0.300 plastic 1.642 22.46 55.9514 5 4.503058022 0.136 6 3.sup.rd lens 24.443000967 0.709 plastic 1.544 55.96 12.9402 7 9.832995605 0.443 8 4.sup.th lens 126.659175869 0.515 plastic 1.544 55.96 23.8412 9 11.818661867 0.599 10 5.sup.th lens 1.830314760 0.982 plastic 1.642 22.46 26.3112 11 2.483182141 0.100 12 6.sup.th lens 5.693008556 1.579 plastic 1.544 55.96 6.78244 13 9.551309876 0.815 14 7.sup.th lens 5.217815016 0.617 plastic 1.584 29.89 5.11316 15 7.387853451 0.366 16 Infrared rays plane 0.300 BK_7 1.517 64.2 filter 17 plane 1.000 18 Image plane plane 0.000 Reference wavelength (d-line); 555 nm; the postion of blocking light: the clear aperture of the first surface is 2.320 mm; the clear aperture of the fifth surface is 1.750 mm.
(179) TABLE-US-00012 TABLE 8 Coefficients of the aspheric surfaces Surface 1 2 4 5 6 7 8 k 4.218427E01 2.641534E+00 1.943524E+01 2.576642E+00 2.638477E+01 1.251815E+01 9.917239E+01 A4 1.374568E03 5.169524E03 9.552506E03 9.694420E03 8.274332E03 9.269063E03 2.539792E02 A6 6.187329E04 6.014409E04 8.655393E03 4.272939E03 1.471004E03 1.423521E03 2.476999E03 A8 3.172341E04 3.498418E04 1.341537E03 4.846662E04 8.675639E04 1.056495E03 4.752220E04 A10 1.043248E04 1.170928E04 5.822625E04 1.935885E04 2.908188E04 8.021186E05 1.249185E05 A12 1.690748E05 1.916946E05 1.543434E04 6.594969E05 9.661237E05 1.073785E04 7.141822E06 A14 1.990841E06 9.902798E08 7.303311E07 9.554668E08 1.766522E06 2.465907E05 7.021694E06 A16 1.404622E07 1.655272E07 1.355712E07 1.419891E07 1.558800E07 6.551488E07 1.829315E06 Surface 9 10 11 12 13 14 15 k 2.140866E+01 4.130031E01 5.748779E01 1.634525E+00 6.477384E+01 4.553673E02 1.567468E+01 A4 1.193827E02 3.003641E02 8.447238E03 9.657550E03 8.148340E03 4.300000E03 4.269638E03 A6 3.482473E03 6.618354E03 2.302313E03 1.669624E03 2.904242E03 1.571107E03 4.118127E04 A8 1.403202E04 1.440880E03 5.287956E04 2.163588E04 3.847761E04 1.638559E04 2.883837E05 A10 4.040280E05 6.554964E05 4.570815E05 1.257647E05 2.475592E05 9.853622E06 1.306841E06 A12 2.163276E06 6.752684E06 3.520462E06 3.655210E07 8.498852E07 3.369603E07 3.623542E08 A14 7.821445E07 2.888837E06 1.694344E07 6.481140E09 1.494319E08 5.988200E09 5.516300E10 A16 5.380421E07 6.060977E07 2.000000E11 7.324000E11 1.065200E10 4.124000E11 3.560000E12
(180) An equation of the aspheric surfaces of the fourth embodiment is the same as that of the first embodiment, and the definitions are the same as well.
(181) The exact parameters of the fourth embodiment based on Table 7 and Table 8 are listed in the following table:
(182) TABLE-US-00013 Fourth embodiment (Reference wavelength: 555 nm) ETP1 ETP2 ETP3 ETP4 ETP5 ETP6 0.597 0.429 0.341 0.527 1.176 1.229 ETP7 ETL EBL EIN EIR PIR 1.083 9.300 1.517 7.783 0.217 0.366 EIN/ETL SETP/EIN EIR/PIR SETP STP SETP/STP 0.837 0.691 0.594 5.382 5.592 0.962 ETP1/TP1 ETP2/TP2 ETP3/TP3 ETP4/TP4 ETP5/TP5 ETP6/TP6 0.671 1.430 0.481 1.022 1.197 0.778 ETP7/TP7 BL EBL/BL SED SIN SED/SIN 1.754 1.666 0.9106 2.401 2.500 0.960 ED12 ED23 ED34 ED45 ED56 ED67 0.255 0.097 0.318 0.163 0.930 0.637 ED12/IN12 ED23/IN23 ED34/IN34 ED45/IN45 ED56/IN56 ED67/IN67 0.628 0.718 0.718 0.271 9.292 0.782 |f/f1| |f/f2| |f/f3| |f/f4| |f/f5| |f/f6| 0.5482 0.1227 0.5306 0.2880 0.2609 1.0123 |f/f7| PPR NPR PPR/|NPR| IN12/f IN67/f 1.3427 2.3790 1.7264 1.3780 0.0592 0.1187 |f1/f2| |f2/f3| (TP1 + IN12)/TP2 (TP7 + IN67)/TP6 0.2238 4.3238 4.3185 0.9072 HOS InTL HOS/HOI InS/HOS ODT % TDT % 9.7580 8.0922 1.3011 0.8775 2.5000 2.4000 HVT11 HVT12 HVT21 HVT22 HVT31 HVT32 0.0000 0.0000 1.2678 1.5900 0.0000 0.0000 HVT61 HVT62 HVT71 HVT72 HVT72/HOI HVT72/HOS 2.8404 0.0000 0.0000 3.5321 0.4710 0.3620 MTFE0 MTFE3 MTFE7 MTFQ0 MTFQ3 MTFQ7 0.84 0.67 0.67 0.65 0.45 0.4 IAG1-IAG4 OAG1-OAG4 BSL 19 deg 19 deg 0.08 mm
(183) The results of the equations of the fourth embodiment based on Table 7 and Table 8 are listed in the following table:
(184) TABLE-US-00014 Values related to the inflection points of the fourth embodiment (Reference wavelength: 555 nm) HIF121 1.3972 HIF121/HOI 0.1863 SGI121 0.1168 |SGI121|/(|SGI121| + TP1) 0.1162 HIF122 1.9644 HIF122/HOI 0.2619 SGI122 0.1889 |SGI122|/(|SGI122| + TP1) 0.1752 HIF211 0.7306 HIF211/HOI 0.0974 SGI211 0.0429 |SGI211|/(|SGI211| + TP2) 0.1250 HIF221 0.9819 HIF221/HOI 0.1309 SGI221 0.0928 |SGI221|/(|SGI221| + TP2) 0.2363 HIF311 1.4063 HIF311/HOI 0.1875 SGI311 0.0669 |SGI311|/(|SGI311| + TP3) 0.0863 HIF312 1.6254 HIF312/HOI 0.2167 SGI312 0.0894 |SGI312|/(|SGI312| + TP3) 0.1120 HIF321 1.6900 HIF321/HOI 0.2253 SGI321 0.2345 |SGI321|/(|SGI321| + TP3) 0.2486 HIF421 2.1180 HIF421/HOI 0.2824 SGI421 0.7420 |SGI421|/(|SGI421| + TP4) 0.5902 HIF521 2.1477 HIF521/HOI 0.2864 SGI521 0.8933 |SGI521|/(|SGI521| + TP5) 0.4762 HIF522 2.9216 HIF522/HOI 0.3895 SGI522 1.3728 |SGI522|/(|SGI522| + TP5) 0.5829 HIF611 1.8402 HIF611/HOI 0.2454 SGI611 0.2234 |SGI611|/(|SGI611| + TP6) 0.1239 HIF612 3.9456 HIF612/HOI 0.5261 SGI612 0.0074 |SGI612|/(|SGI612| + TP6) 0.0047 HIF621 1.4937 HIF621/HOI 0.1992 SGI621 0.1064 ISGI621|/(|SGI621| + TP6) 0.0631 HIF622 2.5164 HIF622/HOI 0.3355 SGI622 0.2040 |SGI622|/(|SGI622| + TP6) 0.1144 HIF711 2.5652 HIF711/HOI 0.3420 SGI711 0.6203 |SGI711|/(|SGI711| + TP7) 0.5012 HIF712 4.3050 HIF712/HOI 0.5740 SGI712 1.2247 |SGI712|/(|SGI712| + TP7) 0.6649 HIF721 1.4814 HIF721/HOI 0.1975 SGI721 0.1146 |SGI721|/(|SGI721| + TP7) 0.1565
Fifth Embodiment
(185) As shown in
(186) The first lens 510 has positive refractive power and is made of plastic. An object-side surface 512, which faces the object side, is a convex aspheric surface, and an image-side surface 514, which faces the image side, is a concave aspheric surface.
(187) The second lens 520 has negative refractive power and is made of plastic. An object-side surface 522 thereof, which faces the object side, is a convex aspheric surface, and an image-side surface 524 thereof, which faces the image side, is a concave aspheric surface. The image-side surface 524 has an inflection point.
(188) The third lens 530 has positive refractive power and is made of plastic. An object-side surface 532, which faces the object side, is a convex aspheric surface, and an image-side surface 534, which faces the image side, is a concave aspheric surface.
(189) The fourth lens 540 has positive refractive power and is made of plastic. An object-side surface 542, which faces the object side, is a concave surface, and an image-side surface 544, which faces the image side, is a convex surface.
(190) The fifth lens 550 has positive refractive power and is made of plastic. An object-side surface 552, which faces the object side, is a convex aspheric surface, and an image-side surface 554, which faces the image side, is a convex aspheric surface. The object-side surface 552 has an inflection point.
(191) The sixth lens 560 has positive refractive power and is made of plastic. An object-side surface 562, which faces the object side, is a convex surface, and an image-side surface 564, which faces the image side, is a convex surface. The object-side surface 562 has two inflection points, and the image-side surface 564 has an inflection point. Whereby, the incident angle of each view field entering the sixth lens 560 can be effectively adjusted to improve aberration.
(192) The seventh lens 570 has negative refractive power and is made of plastic. An object-side surface 572, which faces the object side, is a concave surface, and an image-side surface 574, which faces the image side, is a convex surface. The object-side surface 572 and the image-side surface 574 both have an inflection point. It may help to shorten the back focal length to keep small in size. In addition, it could effectively suppress the incidence angle of light in the off-axis view field, and correct the off-axis view field aberration.
(193) The infrared rays filter 580 is made of glass and between the seventh lens 570 and the image plane 590. The infrared rays filter 580 gives no contribution to the focal length of the system.
(194) The optical image capturing system 10 of the first embodiment further satisfies PP=178.9037 mm; and f1/PP=0.4233, where PP is a sum of the focal lengths fp of each lens with positive refractive power. It is helpful to share the positive refractive power of one single lens to other positive lenses to avoid the significant aberration caused by the incident rays.
(195) The optical image capturing system 10 of the first embodiment further satisfies NP=41.0270 mm; and f7/NP=0.7332, where NP is a sum of the focal lengths fp of each lens with negative refractive power. It is helpful to share the positive refractive power of one single lens to other negative lenses.
(196) The parameters of the lenses of the fifth embodiment are listed in Table 9 and Table 10.
(197) TABLE-US-00015 TABLE 9 f = 6.7437 mm; f/HEP = 1.2; HAF = 47.4980 deg Focal Radius of Thickness Refractive Abbe length Surface curvature (mm) (mm) Material index number (mm) 0 Object plane infinity 1 1.sup.st lens 38.41549872 3.083 plastic 1.650 21.40 75.725 2 164.5702173 0.051 3 2.sup.nd lens 25.05742058 1.828 plastic 1.514 56.80 10.923 4 4.484579084 1.422 5 3.sup.rd lens 7.747689137 4.336 plastic 1.650 21.40 48.146 6 7.993162782 1.838 7 Aperture plane 0.660 8 4.sup.th lens 28.36730639 5.531 plastic 1.565 58.00 15.401 9 7.145672538 0.116 10 5.sup.th lens 18.70637432 5.689 plastic 1.565 58.00 15.622 11 14.96142417 1.411 12 6.sup.th lens 14.99356494 5.269 plastic 1.565 58.00 24.011 13 128.6124653 1.108 14 7.sup.th lens 15.50208128 0.673 plastic 1.650 21.40 30.104 15 73.56363056 0.700 16 Infrared plane 0.200 BK_7 1.517 64.2 rays filter 17 plane 1.085 18 Image plane plane Reference wavelength (d-line): 555 nm.
(198) TABLE-US-00016 TABLE 10 Coefficients of the aspheric surfaces Surface 1 2 3 4 5 6 8 k 1.516714E+00 3.374432E+01 1.818263E+00 6.750988E01 2.849603E01 3.933454E+00 3.860484E+01 A4 1.595233E05 1.684952E05 3.775903E05 9.580167E05 5.691900E05 2.051521E04 3.259130E04 A6 4.019400E10 7.312610E09 1.329275E07 5.194715E06 9.286641E07 1.985735E05 7.981440E06 A8 3.420000E12 7.920000E11 3.386200E10 9.256678E08 6.189397E08 2.853734E07 1.012572E06 A10 1.600000E13 4.800000E13 6.250000E12 1.423600E09 1.543630E09 5.527219E08 9.907847E08 A12 0.000000E+00 0.000000E+00 3.000000E14 2.774000E11 2.586000E11 2.995300E09 7.424600E09 A14 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 4.300000E13 9.873100E10 3.558300E10 A16 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 Surface 9 10 11 12 13 14 15 k 2.380207E01 1.960669E+00 2.123206E+00 4.403179E+00 3.356474E+01 2.175100E+00 2.296751E+01 A4 2.839258E04 2.349293E05 4.885172E05 2.214845E04 1.475931E04 9.883455E05 1.851032E04 A6 6.140481E06 2.272014E08 1.121620E07 4.434699E08 1.930089E06 2.233778E07 7.070317E07 A8 2.575404E08 7.875300E10 3.165880E09 5.862920E09 1.477393E08 9.015100E10 1.216596E08 A10 1.171000E10 3.042000E11 2.164000E11 1.318900E10 8.832000E11 6.273000E11 1.844300E10 A12 7.053000E11 3.800000E13 1.000000E14 1.420000E12 4.380000E12 1.600000E13 6.780000E12 A14 3.270000E12 0.000000E+00 0.000000E+00 0.000000E+00 6.000000E14 7.000000E14 2.500000E13 A16 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00
(199) An equation of the aspheric surfaces of the fifth embodiment is the same as that of the first embodiment, and the definitions are the same as well.
(200) The exact parameters of the fifth embodiment based on Table 9 and Table 10 are listed in the following table:
(201) TABLE-US-00017 Fifth embodiment (Reference wavelength: 555 nm) ETP1 ETP2 ETP3 ETP4 ETP5 ETP6 3.005 2.573 4.450 5.109 5.222 4.986 ETP7 ETL EBL EIN EIR PIR 0.886 34.896 2.027 32.869 0.742 0.700 EIN/ETL SETP/EIN EIR/PIR SETP STP SETP/STP 0.942 0.798 1.060 26.230 26.410 0.993 ETP1/TP1 ETP2/TP2 ETP3/TP3 ETP4/TP4 ETP5/TP5 ETP6/TP6 0.975 1.407 1.026 0.924 0.918 0.946 ETP7/TP7 BL EBL/BL SED SIN SED/SIN 1.317 1.985 1.0212 6.639 6.605 1.005 ED12 ED23 ED34 ED45 ED56 ED67 0.183 1.040 1.685 0.927 1.911 0.893 ED12/IN12 ED23/IN23 ED34/IN34 ED45/IN45 ED56/IN56 ED67/IN67 3.581 0.731 0.675 7.975 1.355 0.806 |f/f1| |f/f2| |f/f3| |f/f4| |f/f5| |f/f6| 0.0891 0.6174 0.1401 0.4379 0.4317 0.2809 |f/f7| PPR NPR PPR/|NPR| IN12/f IN67/f 0.2240 1.3796 0.8414 1.6396 0.0076 0.1643 |f1/f2| |f2/f3| (TPI + IN12)/TP2 (TP7 + IN67)/TP6 6.9326 0.2269 1.7147 0.3379 HOS InTL HOS/HOI InS/HOS ODT % TDT % 35.0000 33.0149 4.6667 0.6412 2.4971 0.4277 HVT11 HVT12 HVT21 HVT22 HVT31 HVT32 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 HVT61 HVT62 HVT71 HVT72 HVT72/HOI HVT72/HOS 0.0000 0.0000 0.0000 4.2248 0.5633 0.1207 MTFE0 MTFE3 MTFE7 MTFQ0 MTFQ3 MTFQ7 0.15 0.03 0.17 0.01 0.078 0.097 IAG1-IAG4 OAG1-OAG4 BSL 19 deg 19 deg 0.08 mm
(202) The results of the equations of the fifth embodiment based on Table 9 and Table 10 are listed in the following table:
(203) TABLE-US-00018 Values related to the inflection points of the fifth embodiment (Reference wavelength: 555 nm) HIF121 2.3213 HIF121/HOI 0.3095 SGI121 0.1503 |SGI121|/(|SGI121| + TP1) 0.1102 HIF122 2.3596 HIF122/HOI 0.3146 SGI122 0.1549 |SGI122|/(|SGI122| + TP1) 0.1132 HIF211 0.7262 HIF211/HOI 0.0968 SGI211 0.0280 |SGI211|/(|SGI211| + TP2) 0.0492 HIF221 1.0711 HIF221/HOI 0.1428 SGI221 0.1024 |SGI221|/(|SGI221| + TP2) 0.1591 HIF311 2.2817 HIF311/HOI 0.3042 SGI311 0.1592 |SGI311|/(|SGI311| + TP3) 0.1473 HIF321 2.7143 HIF321/HOI 0.3619 SGI321 0.6623 |SGI321|/(|SGI321| + TP3) 0.4181 HIF411 0.2581 HIF411/HOI 0.0344 SGI411 0.0002 |SGI411|/(|SGI411| + TP4) 0.0002 HIF412 0.9763 HIF412/HOI 0.1302 SGI412 0.0012 |SGI412|/(|SGI412| + TP4) 0.0011 HIF413 1.6099 HIF413/HOI 0.2147 SGI413 0.0025 |SGI413|/(|SGI413| + TP4) 0.0023 HIF414 2.1553 HIF414/HOI 0.2874 SGI414 0.0041 |SGI414|/(|SGI414| + TP4) 0.0038 HIF421 3.1927 HIF421/HOI 0.4257 SGI421 0.7812 |SGI421|/(|SGI421| + TP4) 0.4182 HIF521 3.8199 HIF521/HOI 0.5093 SGI521 2.0739 |SGI521|/(|SGI521| + TP5) 0.7243 HIF611 1.5835 HIF611/HOI 0.2111 SGI611 0.1362 |SGI611|/(|SGI611| + TP6) 0.1026 HIF612 4.0634 HIF612/HOI 0.5418 SGI612 0.2673 |SGI612|/(|SGI612| + TP6) 0.1833 HIF613 4.3009 HIF613/HOI 0.5735 SGI613 0.4534 |SGI613|/(|SGI613| + TP6) 0.2756 HIF621 1.8405 HIF621/HOI 0.2454 SGI621 0.1107 |SGI621|/(|SGI621| + TP6) 0.0850 HIF622 2.6284 HIF622/HOI 0.3505 SGI622 0.1977 |SGI622|/(|SGI622| + TP6) 0.1423 HIF623 3.9646 HIF623/HOI 0.5286 SGI623 0.4724 |SGI623|/(|SGI623| + TP6) 0.2839 HIF624 4.9355 HIF624/HOI 0.6581 SGI624 0.6399 |SGI624|/(|SGI624| + TP6) 0.3494 HIF711 3.4061 HIF711/HOI 0.4541 SGI711 0.9805 |SGI711|/(|SGI711| + TP7) 0.6196 HIF712 5.0056 HIF712/HOI 0.6674 SGI712 1.5615 |SGI712|/(|SGI712| + TP7) 0.7217 HIF721 2.0478 HIF721/HOI 0.2730 SGI721 0.1830 |SGI721|/(|SGI721| + TP7) 0.2331
Sixth Embodiment
(204) As shown in
(205) The first lens 610 has positive refractive power and is made of plastic. An object-side surface 612, which faces the object side, is a convex aspheric surface, and an image-side surface 614, which faces the image side, is a convex aspheric surface. The object-side surface 612 has an inflection point.
(206) The second lens 620 has negative refractive power and is made of plastic. An object-side surface 622 thereof, which faces the object side, is a convex aspheric surface, and an image-side surface 624 thereof, which faces the image side, is a concave aspheric surface. The object-side surface 622 and the image-side surface 624 both have an inflection point.
(207) The third lens 630 has positive refractive power and is made of plastic. An object-side surface 632, which faces the object side, is a convex aspheric surface, and an image-side surface 634, which faces the image side, is a convex aspheric surface. The object-side surface 612 has an inflection point.
(208) The fourth lens 640 has positive refractive power and is made of plastic. An object-side surface 642, which faces the object side, is a convex aspheric surface, and an image-side surface 644, which faces the image side, is a convex aspheric surface. The object-side surface 642 has two inflection points.
(209) The fifth lens 650 has negative refractive power and is made of plastic. An object-side surface 652, which faces the object side, is a concave aspheric surface, and an image-side surface 654, which faces the image side, is a convex aspheric surface. The object-side surface 652 and the image-side surface both have two inflection points.
(210) The sixth lens 660 can have positive refractive power and is made of plastic. An object-side surface 662, which faces the object side, is a convex surface, and an image-side surface 664, which faces the image side, is a convex surface. The object-side surface 662 has two inflection points, and the image-side surface 664 has three inflection points. Whereby, incident angle of each field of view for the sixth lens 660 can be effectively adjusted to improve aberration.
(211) The seventh lens 670 has negative refractive power and is made of plastic. An object-side surface 672, which faces the object side, is a convex surface, and an image-side surface 674, which faces the image side, is a concave surface. The object-side surface 672 and the image-side surface 674 both have an inflection point. It may help to shorten the back focal length to keep small in size. In addition, it may reduce an incident angle of the light of an off-axis field of view and correct the aberration of the off-axis field of view.
(212) The infrared rays filter 680 is made of glass and between the seventh lens 670 and the image plane 690. The infrared rays filter 680 gives no contribution to the focal length of the system.
(213) The optical image capturing system 10 of the first embodiment further satisfies PP=62.7420 mm; and f1/PP=0.2381, where PP is a sum of the focal lengths fp of each lens with positive refractive power. It is helpful to share the positive refractive power of one single lens to other positive lenses to avoid the significant aberration caused by the incident rays.
(214) The optical image capturing system 10 of the first embodiment further satisfies NP=88.6984 mm; and f7/NP=0.0806, where NP is a sum of the focal lengths fp of each lens with negative refractive power. It is helpful to share the positive refractive power of one single lens to other negative lenses.
(215) The parameters of the lenses of the sixth embodiment are listed in Table 11 and Table 12.
(216) TABLE-US-00019 TABLE 11 f = 6.830 mm; f/HEP = 1.6; HAF = 47.5 deg Focal Radius of Thickness Refractive Abbe length Surface curvature (mm) (mm) Material index number (mm) 0 Object plane infinity 1 1.sup.st lens 22.92669222 0.782 plastic 1.544 55.96 14.940 2 12.50533563 0.101 3 Aperture plane 0.100 4 2.sup.nd lens 3.414733165 0.400 plastic 1.642 22.46 27.654 5 2.735872028 0.627 6 3.sup.rd lens 25.0700232 1.114 plastic 1.544 55.96 26.746 7 34.41000821 0.210 8 4.sup.th lens 89.20096062 1.274 plastic 1.544 55.96 14.495 9 8.638595141 0.560 10 5.sup.th lens 2.047917945 0.689 plastic 1.642 22.46 53.900 11 2.463255196 0.100 12 6.sup.th lens 6.29780764 1.101 plastic 1.544 55.96 6.562 13 7.792827475 0.100 14 7.sup.th lens 1.817247142 0.403 plastic 1.642 22.46 7.145 15 1.191109992 1.139 16 Infrared plane 0.300 BK_7 1.517 64.2 rays filter 17 plane 2.100 18 Image plane 0.000 plane Reference wavelength (d-line): 555 nm; the position of blocking light: the clear aperture of the first surface is 2.200 mm; the clear aperture of the seventh surface is 2.275 mm.
(217) TABLE-US-00020 TABLE 12 Coefficients of the aspheric surfaces Surface 1 2 4 5 6 7 8 k 8.519837E+01 9.000000E+01 3.351396E+00 9.397617E01 1.916083E+01 3.401159E+01 9.000000E+01 A4 2.374462E03 5.838686E03 2.291764E02 3.213095E02 2.459788E03 2.687800E02 3.504567E02 A6 1.612226E03 4.395112E03 9.276993E03 7.779255E03 7.321283E04 8.896301E03 1.368358E02 A8 5.288473E04 2.200633E03 4.200876E03 2.129420E03 2.008436E03 6.128646E03 8.251017E03 A10 1.576862E04 6.372117E04 1.117507E03 1.850027E04 1.142530E03 2.252164E03 2.801748E03 A12 3.075118E05 1.149037E04 1.799793E04 5.218940E05 3.532551E04 4.656386E04 5.316745E04 A14 3.944190E06 1.062391E05 1.162220E05 1.954396E05 5.267700E05 5.089052E05 5.254294E05 A16 1.933549E07 3.588671E07 2.716061E07 1.982470E06 3.502449E06 2.347679E06 2.052826E06 Surface 9 10 11 12 13 14 15 k 2.670809E+01 5.682341E01 6.598428E01 2.726292E+00 9.000000E+01 5.542566E+00 3.272144E+00 A4 3.836182E02 2.612266E02 1.049654E02 9.782575E03 3.354961E02 2.468524E03 6.836340E03 A6 9.267657E03 2.022422E02 8.397277E03 1.182916E03 4.676770E03 2.596987E03 3.917020E04 A8 2.459905E03 5.248210E03 1.737698E03 1.797794E05 2.884197E04 3.240621E04 8.533027E05 A10 4.634531E04 8.507499E04 2.058819E04 6.239689E06 8.287770E06 1.834018E05 5.100116E06 A12 5.102977E05 7.181237E05 1.044135E05 2.938476E07 4.544651E08 5.321956E07 1.467939E07 A14 2.681167E06 2.426471E06 4.487730E08 5.833340E09 2.555930E09 7.576070E09 2.082250E09 A16 4.196504E08 4.307730E09 8.094270E09 4.375000E11 3.796000E11 4.053000E11 1.160000E11
(218) An equation of the aspheric surfaces of the sixth embodiment is the same as that of the first embodiment, and the definitions are the same as well.
(219) The exact parameters of the sixth embodiment based on Table 11 and Table 12 are listed in the following table:
(220) TABLE-US-00021 Sixth embodiment (Reference wavelength: 555 nm) ETP1 ETP2 ETP3 ETP4 ETP5 ETP6 0.509 0.530 0.762 1.105 0.884 0.872 ETP7 ETL EBL EIN EIR PIR 0.639 11.005 2.723 8.283 0.323 1.139 EIN/ETL SETP/EIN EIR/PIR SETP STP SETP/STP 0.753 0.640 0.283 5.300 5.964 0.920 ETP1/TP1 ETP2/TP2 ETP3/TP3 ETP4/TP4 ETP5/TP5 ETP6/TP6 0.651 1.325 0.684 0.867 1.283 0.792 ETP7/TP7 BL EBL/BL SED SIN SED/SIN 1.586 3.539 0.7694 2.983 1.799 1.658 EDI2 ED23 ED34 ED45 ED56 ED67 0.640 0.105 0.274 0.133 1.340 0.491 ED12/IN12 ED23/IN23 ED34/IN34 ED45/IN45 ED56/IN56 ED67/IN67 3.179 0.168 1.307 0.237 13.398 4.907 |f/f1| |f/f2| |f/f3| |f/f4| |f/f5| |f/f6| 0.4572 0.2470 0.2554 0.4712 0.1267 1.0409 |f/f7| PPR NPR PPR/|NPR| IN12/f IN67/f 0.9560 2.2248 1.3297 1.6731 0.0295 0.0146 |f1/f2| |f2/f3| (TP1 + IN12)/TP2 (TP7 + IN67)/TP6 0.5402 1.0340 2.4583 0.4566 HOS InTL HOS/HOI InS/HOS ODT % TDT % 11.1019 7.5625 1.4803 0.9204 2.0054 1.3214 HVT11 HVT12 HVT21 HVT22 HVT31 HVT32 2.1665 0.0000 1.9156 0.0000 1.3729 0.0000 HVT61 HVT62 HVT71 HVT72 HVT72/HOI HVT72/HOS 3.2480 0.0000 2.8232 3.4670 0.4623 0.3123 MTFE0 MTFE3 MTFE7 MTFQ0 MTFQ3 MTFQ7 0.86 0.66 0.53 0.68 0.4 0.28 IAG1-IAG4 OAG1-OAG4 BSL 19 deg 19 deg 0.08 mm
(221) The results of the equations of the sixth embodiment based on Table 11 and Table 12 are listed in the following table:
(222) TABLE-US-00022 Values related to the inflection points of the sixth embodiment (Reference wavelength: 555 nm) HIF111 1.6856 HIF111/HOI 0.2247 SGI111 0.0702 |SGI111|/(|SGI111| + TP1) 0.0823 HIF211 1.1663 HIF211/HOI 0.1555 SGI211 0.1579 |SGI211|/(|SGI211| + TP2) 0.2830 HIF221 1.2636 HIF221/HOI 0.1685 SGI221 0.2310 |SGI221|/(|SGI221| + TP2) 0.3661 HIF311 0.8985 HIF311/HOI 0.1198 SGI311 0.0142 |SGI311|/(|SGI311| + TP3) 0.0126 HIF411 0.1655 HIF411/HOI 0.0221 SGI411 0.0001 |SGI411|/(|SGI411| + TP4) 0.0001 HIF412 2.2930 HIF412/HOI 0.3057 SGI412 0.5927 |SGI412|/(|SGI412| + TP4) 0.3175 HIF511 1.7740 HIF511/HOI 0.2365 SGI511 0.7862 |SGI511|/(|SGI511| + TP5) 0.5329 HIF512 2.8492 HIF512/HOI 0.3799 SGI512 1.3557 |SGI512|/(|SGI512| + TP5) 0.6630 HIF521 1.8793 HIF521/HOI 0.2506 SGI521 0.6944 |SGI521|/(|SGI521| + TP5) 0.5019 HIF522 3.2152 HIF522/HOI 0.4287 SGI522 1.0509 |SGI522|/(|SGI522| + TP5) 0.6040 HIF611 2.1327 HIF611/HOI 0.2844 SGI611 0.4380 |SGI611|/(|SGI611| + TP6) 0.2845 HIF612 4.1144 HIF612/HOI 0.5486 SGI612 0.5361 |SGI612|/(|SGI612| + TP6) 0.3274 HIF621 0.4745 HIF621/HOI 0.0633 SGI621 0.0118 |SGI621|/(|SGI621| + TP6) 0.0106 HIF622 2.3646 HIF622/HOI 0.3153 SGI622 0.2918 |SGI622|/(|SGI622| + TP6) 0.2094 HIF623 5.0158 HIF623/HOI 0.6688 SGI623 0.0632 |SGI623|/(|SGI623| + TP6) 0.0543 HIF711 1.2844 HIF711/HOI 0.1713 SGI711 0.3205 |SGI711|/(|SGI711| + TP7) 0.4431 HIF721 1.2208 HIF721/HOI 0.1628 SGI721 0.4244 |SGI721|/(|SGI721| + TP7) 0.5131
(223) It must be pointed out that the embodiments described above are only some embodiments of the present invention. All equivalent structures which employ the concepts disclosed in this specification and the appended claims should fall within the scope of the present invention.