An image-capturing device includes: a plurality of micro-lenses disposed in a two-dimensional pattern near a focal plane of an image forming optical system; an image sensor that includes a two-dimensional array of element groups each corresponding to one of the micro-lenses and made up with a plurality of photoelectric conversion elements which receive, via the micro-lenses light fluxes from a subject having passed through the photographic optical system and output image signals; and a synthesizing unit that combines the image signals output from the plurality of photoelectric conversion elements based upon information so as to generate synthetic image data in correspondence to a plurality of image forming areas present on a given image forming plane of the image forming optical system, the information specifying positions of the photoelectric conversion elements output image signals that are to be used for generating synthetic image data for each image forming area.

An image-capturing device includes: a plurality of micro-lenses disposed in a two-dimensional pattern near a focal plane of an image forming optical system; an image sensor that includes a two-dimensional array of element groups each corresponding to one of the micro-lenses and made up with a plurality of photoelectric conversion elements which receive, via the micro-lenses light fluxes from a subject having passed through the photographic optical system and output image signals; and a synthesizing unit that combines the image signals output from the plurality of photoelectric conversion elements based upon information so as to generate synthetic image data in correspondence to a plurality of image forming areas present on a given image forming plane of the image forming optical system, the information specifying positions of the photoelectric conversion elements output image signals that are to be used for generating synthetic image data for each image forming area.

An optical lens assembly includes five lens elements and provides a TTL/EFL<1.0. In an embodiment, the focal length of the first lens element f1<TTL/2, an air gap between first and second lens elements is smaller than half the second lens element thickness, an air gap between the third and fourth lens elements is greater than TTL/5 and an air gap between the fourth and fifth lens elements is smaller than about 1.5 times the fifth lens element thickness. All lens elements may be aspheric.

An optical imaging system is described including first to sixth lenses sequentially disposed from an object side to an image side, and an image sensor configured to convert incident light reflected from a subject, having passed through the first to sixth lenses, into an electrical signal. One of the first to sixth lenses includes a spherical object-side surface and another of the first to sixth lenses includes corresponding aspherical object-side surfaces. The first to sixth lenses include corresponding aspherical image-side surfaces, and a lens of the first to sixth lenses that is closer to the object side than the one of the first to sixth lenses including the spherical object-side surface, has a highest refractive index among the first to sixth lenses.

An optical imaging system is described including first to sixth lenses sequentially disposed from an object side to an image side, and an image sensor configured to convert incident light reflected from a subject, having passed through the first to sixth lenses, into an electrical signal. One of the first to sixth lenses includes a spherical object-side surface and another of the first to sixth lenses includes corresponding aspherical object-side surfaces. The first to sixth lenses include corresponding aspherical image-side surfaces, and a lens of the first to sixth lenses that is closer to the object side than the one of the first to sixth lenses including the spherical object-side surface, has a highest refractive index among the first to sixth lenses.

The present disclosure provides a lens assembly. The lens assembly, includes at least one lens having a central part used for imaging and an edge part around the central part; and a shading unit in the at least one lens. The edge part depresses from an image side surface to an object side surface and forms a concave part for positioning the shading unit. In addition, the present disclosure further discloses a lens module including the lens assembly mentioned above.

An endoscope objective optical system consists of in order from an object side, a front group having a negative refractive power, an aperture stop, and a rear group having a positive refractive power, wherein either the front group or the rear group includes one or more than one cemented lens, and the cemented lens includes a lens having a positive refractive power and a lens having a negative refractive power, and the rear group includes a positive lens which is a single lens, on the object side, and the following conditional expressions (1), (2), (3), and (4) are satisfied.
1.1<Ih/ft<1.8(1)
ff/ft<0.9(2)
45<d1(3)
LOs/Ih<1.5(4) where, Ih denotes the maximum image height, ft denotes a focal length of an overall endoscope objective optical system, ff denotes a focal length of the front group, d1 denotes Abbe's number for a glass material of the lens having a positive refractive power, on the object side of the rear group, and LOs denotes a distance from a first surface on the object side of the endoscope objective optical system up to the aperture stop, and here the first surface on the object side of the endoscope objective optical system is a lens surface positioned nearest to object in the endoscope objective optical system.

An endoscope objective optical system consists of in order from an object side, a front group having a negative refractive power, an aperture stop, and a rear group having a positive refractive power, wherein either the front group or the rear group includes one or more than one cemented lens, and the cemented lens includes a lens having a positive refractive power and a lens having a negative refractive power, and the rear group includes a positive lens which is a single lens, on the object side, and the following conditional expressions (1), (2), (3), and (4) are satisfied.
1.1<Ih/ft<1.8(1)
ff/ft<0.9(2)
45<d1(3)
LOs/Ih<1.5(4) where, Ih denotes the maximum image height, ft denotes a focal length of an overall endoscope objective optical system, ff denotes a focal length of the front group, d1 denotes Abbe's number for a glass material of the lens having a positive refractive power, on the object side of the rear group, and LOs denotes a distance from a first surface on the object side of the endoscope objective optical system up to the aperture stop, and here the first surface on the object side of the endoscope objective optical system is a lens surface positioned nearest to object in the endoscope objective optical system.

A dual-aperture zoom camera comprising a Wide camera with a respective Wide lens and a Tele camera with a respective Tele lens, the Wide and Tele cameras mounted directly on a single printed circuit board, wherein the Wide and Tele lenses have respective effective focal lengths EFL.sub.W and EFL.sub.T and respective total track lengths TTL.sub.W and TTL.sub.T and wherein TTL.sub.W/EFL.sub.W>1.1 and TTL.sub.T/EFL.sub.T<1.0. Optionally, the dual-aperture zoom camera may further comprise an optical OIS controller configured to provide a compensation lens movement according to a user-defined zoom factor (ZF) and a camera tilt (CT) through LMV=CT*EFL.sub.ZF, where EFL.sub.ZF is a zoom-factor dependent effective focal length.

An optical assembly for a wide field of view digital camera includes, from object end to image end, first and second optical groups separated by an aperture stop. The optical assembly is configured to provide images with TV distortion that is less than 16. The first optical group includes two or more lens elements, including a first lens element having a largest diameter among the multiple lens elements to collect light at said wide field of view. The second optical group includes a doublet, which is configured to compensate for oblique aberrational error, and an aspheric lens element, which is configured to compensate for astigmatism error.