Abstract: The zoom lens consists of, in order from an object side to an image side, a first lens group having a negative refractive power, a middle group, and a final group. During zooming, a spacing between the first lens group and the middle group changes, and a spacing between the middle group and the final group changes. During focusing, at least a part of the middle group moves, and the first lens group and the final group remain stationary with respect to an image plane. The zoom lens satisfies predetermined conditional expressions about a back focal length, a focal length, and a maximum half angle of view.

Abstract: The present disclosure discloses an optical imaging lens assembly, which includes sequentially from an object side to an image side along an optical axis, a first lens and at least one subsequent lens having refractive power. A distance TTL along the optical axis from an object-side surface of the first lens to an image plane of the optical imaging lens assembly and a distance P along the optical axis from a to-be-captured object to the object-side surface of the first lens satisfy 0.6<TTL/P*10<1.8.

Abstract: An optical imaging system includes a first lens, a second lens, a third lens including a concave object side surface, a fourth lens, a fifth lens, and a sixth lens sequentially disposed from an object side toward an image side. The optical imaging system satisfies 0.7<TL/f<1.0 and F No.<2.1, where TL is a distance from an object side of the first lens to an imaging plane, f is a total focal length of the optical imaging system, and F No. is the F No. of the optical imaging system.

Abstract: Light-field projector for projecting a near-eye projected image to the eyes of a user, comprising: a light source comprising a plurality of illumination point-lights configured for sequentially emitting a plurality of incident light fields; a spatial light modulator configured for providing a sequence of source images; the spatial light modulator being further configured for modulating each of the incident light-fields in accordance with the source images such as to project sequentially a plurality of pinhole-aperture light-fields, each pinhole-aperture light-fields carrying a light-field component from the source image; wherein each sequentially projected pinhole-aperture light-field forms an intersection virtual pinhole through which the component from the source image can be seen, each virtual pinholes having an aperture stop which is determined by the size of the illumination point-light and being spatially shifted in relation with each other, the near-eye projected image being seen through the plurality

Abstract: An optical system includes, in order from an object side to an image side, a first unit and a second unit. The first unit includes a first substrate, and a first lens having a negative refractive power and disposed on the image side of the first substrate. The second unit includes a second substrate, and a second lens having a positive refractive power and disposed on the image side of the second substrate. An absolute value of the refractive power on an optical axis of the second lens is larger than that of the first lens. A surface on the image side of the first lens is an aspheric surface. In the aspheric surface of the first lens, a refractive power at an outermost peripheral portion of an effective area is smaller than a refractive power on the optical axis.

Abstract: The disclosure provides an optical imaging lens assembly and a fingerprint identification device with the optical imaging lens assembly. The optical imaging lens assembly sequentially comprises, from an object side to an image side along an optical axis: a first lens with a negative refractive power, an object-side surface thereof being a concave surface; a second lens with a positive refractive power, an object-side surface thereof being a convex surface; and a third lens with a positive refractive power, an object-side surface thereof being a convex surface while an image-side surface being a convex surface. EPD is an entrance pupil diameter of the optical imaging lens assembly, and a total effective focal length f of the optical imaging lens assembly and EPD meet f/EPD<1.65. FOV is a maximum field of view of the optical imaging lens assembly, and FOV meets 125°<FOV<140°.

Abstract: The present disclosure discloses an optical imaging lens assembly including, sequentially from an object side to an image side along an optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens. The first lens has negative refractive power; the second lens has negative refractive power; the third lens has positive refractive power; the fourth lens has positive refractive power; the fifth lens has refractive power, and an object-side surface thereof is a concave surface; the sixth lens has refractive power; and the seventh lens has negative refractive power. An effective focal length f1 of the first lens and a total effective focal length f of the optical imaging lens assembly satisfy ?3.5<f1/f<0.

Abstract: A freeform folded optical system that include two freeform prisms with optical power. At least one of the freeform prisms is configured to fold the optical axis twice. Thus, embodiments of the freeform folded optical system fold the optical axis three or four times. Folding the optical axis three or four times in the freeform prisms allows for long focal lengths required for telephoto lens applications without requiring additional lens elements between the prisms. In addition, the configuration of the freeform folded optical system provides reduced Z-axis height when compared to conventional folded lens systems with similar optical characteristics.

Abstract: A camera lens group including, a first lens having positive refractive power, a convex object-side surface and a concave image-side surface; a second lens having refractive power, a convex object-side surface and a concave image-side surface; a third lens having negative refractive power and a concave image-side surface; a fourth lens having positive refractive power, a convex object-side surface and a concave image-side surface; a fifth lens having refractive power, a convex object-side surface and a concave image-side surface; a sixth lens having positive refractive power, a concave object-side surface and a convex image-side surface; a seventh lens having refractive power; an eighth lens having refractive power and a convex image-side surface; a ninth lens having refractive power, a concave object-side surface and a convex image-side surface; and a tenth lens having negative refractive power, a concave object-side surface and a concave image-side surface.

Abstract: There is provided an imaging lens with excellent optical characteristics which satisfies demand of a low profile and a low F-number. An imaging lens comprises in order from an object side to an image side, a first lens with positive refractive power having an object-side surface being convex in a paraxial region; a second lens with negative refractive power having an object-side surface being convex in a paraxial region; a third lens with negative refractive power having an object-side surface being concave in a paraxial region; a fourth lens with negative refractive power in a paraxial region; and a fifth lens with positive refractive power having an image-side surface being convex in a paraxial region, and predetermined conditional expressions are satisfied.

Abstract: A headlamp optical element with a III-region light shape forming structure that comprises a light collecting portion, a first light emitting portion, a reflecting portion, and optionally a second light emitting portion. The light collecting portion converges incident light and emits light via the first light emitting portion. Some light may be directly emitted to the second light emitting portion. The rest of the light may be reflected by the reflecting portion and emitted to the second light emitting portion. The reflecting portion is connected to the lower portion of the first light emitting portion, with a lower beam cut-off line structure at the other end thereof. The light emitting surface of the first light emitting portion comprises multiple step surfaces with segment differences or is a single curved surface.

Abstract: A LED bulb apparatus has a bulb shell, a head cap, a driver circuit and at least one light strip. The bulb shell has a light passing shell and a bottom portion. A head cap has a neck portion, a first electrode and a second electrode. The neck portion of the head cap is connected to the bottom portion of the bulb shell forming a container space. A fluorescent layer covers the multiple LED modules. The driving current is transmitted via at least one of the top end and the bottom end of the light strip to the LED modules. The substrate has a light transmittance less than 50%.

Abstract: A multi-color LED illumination device and specifically a lens comprising a cylindrical opening extending into the lens from a light entry region at which one or more LEDs are configured. A concave spherical surface extends across the entirety of the light exit region of the lens, and a TIR outer surface shaped as a CPC extends between the light entry region and the light exit region. There are various diffusion surfaces placed on the sidewall surface of the cylindrical opening, as well as its upper planar surface and, depending on whether glare control is not needed, the exit surface of the lens. Lunes can also be configured on the sidewall surfaces of the cylindrical opening and if lessening glare is needed, also on the TIR outer reflective surface. The combination of lunes, diffusion elements, and the overall configuration of the lens provides improved color mixing and output brightness.

Abstract: A zoom lens includes, in order from an object side to an image side, a lens unit closest to the object side and having a positive refractive power, an intermediate unit including at least three lens units and an aperture stop, and a lens unit closest to the image side and having a positive refractive power. A distance between each pair of adjacent lens units changes in zooming. The lens unit closest to the object side is configured not to move for zooming, and the at least three lens units and the aperture stop are configured to move in zooming. The lens unit closest to the image side includes a first positive lens. A predetermined condition is satisfied.

Abstract: Disclosed is a system enabling micro-adjustments in headlamps having upper and lower modules. A link exists between the upper and lower modules, the length of the link is made to be adjustable. The lower module is located on a pivot so that adjustments made to the length of the link result in a desired lighting pattern.

Abstract: A first lens group (G1) having positive refractive power, a second lens group (G2) having negative refractive power, a third lens group (G3) having positive refractive power, a fourth lens group (G4) having negative refractive power, and a fifth lens group (G5) having positive refractive power are arranged in order from an object, and zooming is performed by changing distances between each lens group, and the first lens group (G1) is composed of three or more lenses, the fourth lens group (G4) is composed of two or less lenses, and the fifth lens group (G5) is composed of two or less lenses and moves to an image surface side upon zooming from a wide angle end state to a telephoto end state, and the following conditional expression (1) is satisfied. 8.40<f1/(?f2)??(1) where, f1 denotes a focal length of the first lens group (G1), and f2 denotes a focal length of the second lens group (G2).

Abstract: Disclosed are a lighting grill assembly for a vehicle and a method of manufacturing the same, the lighting grill assembly for a vehicle a grill cover, a black paint portion painted using a black paint on a rear surface of the grill cover, and the black paint portion forming a light transmitting portion through which light passes by removing a part of the painted black paint, an inner lens spaced apart from the rear surface of the grill cover in a rearward direction, and a metal layer is deposited on a surface of the inner lens, and a light source configured to radiate light from a rear of the inner lens.

Abstract: A zoom optical system includes a plurality of lens groups, and upon zooming distances between adjacent lens groups change. The zoom optical system has a focusing lens group that moves upon focusing and an image-side lens group disposed adjacent to an image side of the focusing lens group. The zoom optical system satisfies the conditional expression 0.000<dL0t/dL1t<1.000, where dL0t denotes a distance on an optical axis between the focusing lens group and the image-side lens group upon focusing on an infinity object in a telephoto end state, and dL1t denotes a distance on the optical axis between the focusing lens group and the image-side lens group upon focusing on a short-distance object in the telephoto end state.

Abstract: An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens having a negative refractive power, a fifth lens having a negative refractive power, a sixth lens, and a seventh lens having a positive refractive power. The first lens to seventh lens are sequentially disposed in a direction from an object side toward an imaging plane.

Abstract: The present disclosure provides an optical imaging lens assembly including, sequentially from an object side to an image side along an optical axis, a first lens having positive refractive power; a second lens having positive refractive power and a convex object-side surface; and a third lens having negative refractive power. A distance TTL along the optical axis from an object-side surface of the first lens to an imaging plane of the optical imaging lens assembly and half of a diagonal length ImgH of an effective pixel area on the imaging plane satisfy 2.0<TTL/ImgH<2.5.