A method for designing a phase-typed diffraction suppressing optical device (12) for a transparent display screen(11) is disclosed, which comprises: acquiring a light field complex amplitude distribution U(x2,y2,d)=A(x2,y2,d)exp(iφ20(x2,y2,d)) on a plane with a distance d from the transparent display screen (12) after a plane wave is transmitted through the screen; and designing the diffraction suppressing optical device (12), so that it has a transmittance function t2 (x2,y2)=exp(iφ21(x2,y2)) and satisfies φ20 (x2,y2,d)+φ21 (x2,y2)=C, where C is a constant. A diffraction suppressing optical device (12) and an under-screen camera apparatus (1) comprising the same are disclosed. The phase-typed diffraction suppressing optical device (12) suppresses the diffraction effect in the under-screen camera apparatus (1) by providing phase modulation, thereby improving the quality of under-screen imaging.

A camera optical lens includes five-piece lenses, from an object side to an image side. The camera optical lens satisfies conditions of 0.65≤f1/f≤0.85, 1.20≤(R7+R8)/(R7−R8)≤1.75, −40.00≤f3/f≤−20.00, 0.50≤d5/d6≤0.80 and 1.00≤d8/d9≤1.30. Here f denotes a focal length of the camera optical lens, f1 denotes a focal length of the first lens, f3 denotes a focal length of the third lens, R7 denotes a curvature radius of an object-side surface of the fourth lens, R8 denotes a curvature radius of an image-side surface of the fourth lens, d5 denotes an on-axis thickness of the third lens, d6 denotes an on-axis distance from an image-side surface of the third lens to the object-side surface of the fourth lens. The camera optical lens of the present disclosure has excellent optical performances, and meanwhile can meet design requirements of a large aperture, a wide angle and ultra-thin.

The present disclosure relates to optical lens, in particular to a camera optical lens, comprising, from an object side to an image side in sequence: a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens; the second lens has a negative refractive power, and the third lens has a negative refractive power; wherein the camera optical lens satisfies the following conditions: 2.00≤f1/f≤3.00, −20.00≤R5/d5≤−10.00; where, f denotes a focus length of the camera optical lens, f1 denotes a focus length of the first lens, R5 denotes a curvature radius of an object side surface of the third lens, and d5 denotes an on-axis thickness of the third lens. The camera optical lens has a high performance and satisfies a design requirement of low TTL.

A system and method generates a compensation circuit element for an optical circuit design by receiving an optical circuit design. The optical circuit design includes optical circuit elements and channels optically connecting the optical circuit elements. Further, a first compensation length for a first channel of the channels is determined based on a first measured length parameter of the first channel and a first design length parameter associated with the first channel. A compensation circuit element is determined based on the first compensation length. An updated optical circuit design is determined based on the compensation circuit element.

A method and apparatus for optimizing a lens of a virtual reality device and a computer readable storage medium. The method for optimizing a lens of a virtual reality device includes setting an optimization objective and optimization variables for imaging with a lens; and performing optimization processing on the imaging of an object point through the lens by the optimization variables, and obtaining a lens parameter value by which the imaging result is in accordance with the optimization objective, an image surface of the imaging of the object point through the lens being an image surface on which the astigmatism is less than a preset threshold.

An optical imaging system includes a lens unit including at least three lenses; an image sensor that moves along an optical axis direction and receives light that has passed through the lens unit; and a reflective member disposed on an object side of the lens unit and having a reflective surface to change a path of light. The optical imaging system satisfies 0<(SAS/f)/OD<0.15, where SAS is a moving distance of the image sensor along the optical axis direction, f is a total focal length of the lens unit, and OD is an object distance.

A method for operating a coating system for producing layer systems includes the steps of: (i) coating a layer system in a coating facility; (ii) determining a spectral actual measuring plot for the layer system in an optical measuring system; (iii) determining an actual data set by fitting a simulation target measuring plot to the actual measuring plot; (iv) determining actual layer parameters as computed actual layer parameters from the simulation target measuring plot by simulation of the layer system using the actual data set; (v) outputting the actual data set and the computed actual layer parameters at least to a decision system; (vi) providing quality requirement data; and (vii) deciding on an approval of the layer system in the decision system on the basis of a comparison of at least the actual data set, the computed actual layer parameters and. the quality requirement data. A coating system for producing layer systems is also disclosed.

The present disclosure discloses a camera lens group including, sequentially from an object side to an image side of the camera lens group along an optical axis, a first lens, a second lens, a third lens, a fourth lens and a fifth lens. The first lens has a negative refractive power; the second lens has a negative refractive power; the third lens has a refractive power, and an object-side surface of the third lens is concave; the fourth lens has a positive refractive power, an object-side surface of the fourth lens is convex, and an image-side surface of the fourth lens is convex; and the fifth lens has a refractive power. A half of a maximum field of view HFOV of the camera lens group satisfies 0.8<tan(HFOV/2)<1.2.

The present disclosure relates to a lens optical system, which includes: a first lens group having a positive refractive power; a second lens group which performs focusing and has a negative refractive power; and a third lens group having a positive refractive power. A lens among lenses included in the first lens group, which is closest to an object, is a meniscus lens having a positive refractive power, the second lens group includes only a single lens, and a lens among lenses included in the third lens group, which is closest to an image, is a meniscus lens having a negative refractive power. When the second lens group performs focusing, the first lens group and the third lens group are fixed, have F number of 1.8 or lower, and have a half field of view within a range of 13 to 18 degrees.

The disclosure provides an optical imaging camera lens assembly, sequentially including, from an object side to an image side along an optical axis: a first lens having a refractive power; a second lens having a positive refractive power; a third lens having a refractive power; a fourth lens having a negative refractive power; a fifth lens having a positive refractive power; a sixth lens having a refractive power; and a seventh lens having a refractive power. At least four lenses among the first lens to the fifth lens are lenses made of a plastic material; the sixth lens is a spherical lens made of a glass material; and a total effective focal length f of the optical imaging camera lens assembly and an entrance pupil diameter (EPD) of the optical imaging camera lens assembly satisfy: f/EPD<1.2.