A camera module includes: an optical imaging system including a frontmost lens disposed closest to an object side, a rearmost lens disposed closest to an imaging plane, and at least one middle lens disposed between the frontmost lens and the rearmost lens. An image-side surface of the rearmost lens is concave and an inflection point is formed on the image-side surface of the rearmost lens. 0.2<D/TTL is satisfied, D being a shortest distance between the rearmost lens and the imaging plane, and TTL being a distance from an object-side surface of the frontmost lens to the imaging plane.

Techniques for adjusting a color mixing system depending on beam clipping include receiving target information indicative of a target color of light emitted from the light fixture; receiving a beam clipping system setting for a beam clipping system, wherein the beam clipping system is configured to clip a portion of a beam of light; determining a target color mixing system setting based on the target information and the beam clipping system setting; and controlling a color mixing system according to the target color mixing system setting so as to cause the light fixture to emit light having the target color.

A zoom lens comprises a first lens group (G1), a second lens group (G2), a third lens group (G3), a fourth lens group (G4), and a fifth lens group (G5) having positive refractive power. Upon zooming, the first lens group (G1), the second lens group (G2), the third lens group (G3), the fourth lens group (G4), and the fifth lens group (G5) are moved along an optical axis to change a distance between the first lens group (G1) and the second lens group (G2), a distance between the second lens group (G2) and the third lens group (G3), a distance between the third lens group (G3) and the fourth lens group (G4), and a distance between the fourth lens group (G4) and the fifth lens group (G5), in such a manner that the following conditional expression is satisfied.

2.30<f5/d4w<3.60

An optical thin film formed by laminating, from the substrate side, an interlayer, a silver-containing metal layer that contains silver, and a dielectric layer, in which an anchor metal diffusion control layer provided between the interlayer and the silver-containing metal layer, an anchor region which includes an oxide of the anchor metal and has a surface energy that is less than the surface energy of the silver-containing metal layer and larger than the surface energy of the anchor metal diffusion control layer is provided between the anchor metal diffusion control layer and the silver-containing metal layer, a cap region which includes an oxide of the anchor metal is provided between the silver-containing metal layer and the dielectric layer, and the total film thickness of the silver-containing metal layer, the anchor region, and the cap region is 6 nm or less.

A camera module includes: an optical imaging system including a frontmost lens disposed closest to an object side, a rearmost lens disposed closest to an imaging plane, and at least one middle lens disposed between the frontmost lens and the rearmost lens. An image-side surface of the rearmost lens is concave and an inflection point is formed on the image-side surface of the rearmost lens. 0.2<D/TTL is satisfied, D being a shortest distance between the rearmost lens and the imaging plane, and TTL being a distance from an object-side surface of the frontmost lens to the imaging plane.

A zoom lens forms an intermediate image at a position conjugate to a reduction side imaging plane and forms the intermediate image again on a magnification side imaging plane. The zoom lens includes a plurality of lens groups including at least two movable lens groups, which move by changing spacings between the groups adjacent to each other in a direction of an optical axis during zooming, at a position closer to the reduction side than the intermediate image. Among the plurality of lens groups, a final lens group closest to the reduction side has a positive refractive power, and remains stationary with respect to the reduction side imaging plane during zooming. The zoom lens satisfies predetermined conditional expressions (1) and (2) about the focal lengths of the movable lens groups.

There is provided an imaging lens with high-resolution which satisfies demand of wide field of view, low-profileness and low F-number in well balance, and excellently corrects aberrations. An imaging lens comprises, in order from an object side to an image side, a first lens, a second lens having negative refractive power near the optical axis, a third lens having a convex surface facing the image side near the optical axis, a fourth lens and a fifth lens, wherein said first lens has negative refractive power near the optical axis, an image-side surface of said fifth lens has a convex surface facing the image side near the optical axis, and below conditional expressions are satisfied:

3.00<(T4/f)100<5.90

0.40<f2/f5<1.45

where
T4: a distance along the optical axis from the image-side surface of the fourth lens to the object-side surface of the fifth lens,
f: a focal length of the overall optical system of the imaging lens,
f2: a focal length of the second lens,
f5: a focal length of the fifth lens.

An optical thin film formed by laminating, from the substrate side, an interlayer, a silver-containing metal layer that contains silver, and a dielectric layer, in which an anchor metal diffusion control layer provided between the interlayer and the silver-containing metal layer, an anchor region which includes an oxide of the anchor metal and has a surface energy that is less than the surface energy of the silver-containing metal layer and larger than the surface energy of the anchor metal diffusion control layer is provided between the anchor metal diffusion control layer and the silver-containing metal layer, a cap region which includes an oxide of the anchor metal is provided between the silver-containing metal layer and the dielectric layer, and the total film thickness of the silver-containing metal layer, the anchor region, and the cap region is 6 nm or less.

A method and apparatus for capturing an image of at least one object appearing in a field of view (FOV). A housing has an image sensor and a base lens assembly fixedly mounted relative thereto. A moveable lens assembly is movably mounted relative to the housing. The moveable lens, the base lens assembly, and the image sensor are aligned such that light received within the FOV passes through the moveable lens and the base lens assembly and impinges onto the image sensor. The light received from the FOV forms an original image prior to entering the movable lens and the base assembly. Light from the FOV impinging onto the sensor forms an impinging image.

A zoom lens in which a distance between adjacent lens units changes during zooming includes in order from an object side to an image side a first lens unit fixed during zooming and having positive refractive power, three or more moving lens units movable during zooming, and a final lens unit fixed during zooming and having positive refractive power. At least part of the first lens unit moves during focusing. At least one of a moving lens unit closest to an image plane among the three or more moving lens units and the final lens unit includes a first lens having positive refractive power. A predetermined condition is satisfied.