Abstract: A wide-angle lens may include six or more plastic lenses arranged in a plurality of groups. The plurality of groups may include a fourth group comprising a first lens having an aspherical image side and a second lens having an aspherical object side. The aspherical image side of the first lens may be cemented to the aspherical object side of the second lens.

Abstract: A zoom lens includes, in order from an object side to an image side: a first lens group that has a positive refractive power; a second lens group that has a negative refractive power; a third lens group that has a positive refractive power; and a fourth lens group that has a positive refractive power. During zooming from a wide-angle end to a telephoto end, the first lens group is stationary relative to an imaging surface, and the second lens group is moved to the image side in an optical axis direction so as to decrease a space between the second lens group and the third lens group. The third lens group includes a positive lens, a negative lens, and a cemented lens. The zoom lens satisfies ?0.95<fg3_neg/fg3<?0.5. Here, fg3_neg is a focal length of the negative lens of the third lens group, and fg3 is a focal length of the third lens group.

Abstract: On a combiner, a HUD display area is defined by display light from a projector, and guide lights are displayed. An optical path length from the combiner to a display-light projector, an optical path length from the combiner to a first light source, and an optical path length from the combiner to a second light source in a viewing direction are larger in this order.

Abstract: Emitted light from first light sources cause a pair of first guide lights to be displayed on a combiner side by side at positions adjacent to a HUD display area. Emitted light from second light sources cause a pair of second guide lights to be displayed such that the pair of first guide lights are interposed between the pair of second guide lights. At least one of number of light sources to be lit, lighting cycle, and lighting order of the first and the second light sources is changed in accordance with a current vehicle speed and a change in shift position of a transmission of a vehicle.

Abstract: An electrophoretic display device with a plurality of first particles which migrate between a remain region and a display region in response to an electric field, as well as a plurality of non-migrating second particles which are fixedly disposed between the remain and display regions and which (a) allow the plurality of first particles to pass between the remain and display regions in response to the electric field, and (b) cover the plurality of first particles when the first particles are disposed in the remain region.

Abstract: An optical lens (10), in particular for use as a spectacle lens, comprises a first lens element (18) and at least one second lens element (20), wherein the first lens element (18) and the second lens element (20) at least partly act together in an achromatic fashion. The second lens element (20) is configured as at least one lens segment (26) that is only arranged in a margin region (28) of the first lens element (18). Furthermore, a method for producing the optical lens (10) is described.

Abstract: When a signal indicating that an event involving a need to guide a sight line from an HUD display area to a second display area occurs, a first guide light is displayed, and then a second guide light is displayed.

Abstract: An imaging lens assembly includes a barrel and a lens assembly, wherein the lens assembly is disposed in the barrel. The barrel has an incident light surface and a barrel cylindrical axis, wherein the incident light surface includes a specular region including at least one specular protrusion region disposed thereon. An angle between a shortest line from an innermost edge to an outermost edge of the specular protrusion region and a normal line to the barrel cylindrical axis is ?.

Abstract: A modular eyewear with multiple interchangeable components includes: a) a central frame with two eyeglass supporting members, lens and a bridge member; b) lenses, c) at least two temple members, hingedly and removably connected to the central frame at opposite ends thereof; d) two temple quick release mechanisms; e) a lens-free facade member removably attached to the central frame. A user may wear the modular eyewear with or without the facade and with matching, non-matching or substitute temple members.

Abstract: A modular facade and eyewear includes: a) a central frame with two eyeglass supporting members, lens and a bridge member; b) lenses, c) at least two temple members, hingedly and connected to the frame; d) a lens-free facade member removably attached to the central frame. A stand-alone facade for eyewear has attachment mechanisms and a central alignment component. A user may wear the modular eyewear with or without the facade and with matching, non-matching or substitute facade members.

Abstract: An imaging lens substantially includes seven lenses, constituted by: a first lens having a positive refractive power and a convex surface toward an image side; a second lens having a negative refractive power; a third lens having a positive refractive power; a fourth lens; a fifth lens having a positive refractive power; a sixth lens; and a seventh lens having a negative refractive power, a concave surface toward an image side, and at least one inflection point in the surface toward the image side; provided in this order from an object side. All of the first lens through the seventh lens are single lenses.

Abstract: A fundus photographing apparatus includes: a photographing unit including a fundus illumination optical system to illuminate a fundus of a patient's eye and a fundus photographing optical system having a light receiving element to obtain a fundus image of the illuminated eye; and an alignment unit to position the photographing unit with the eye based on a predetermined alignment reference position. The alignment unit includes: an extracting part to extract, by image processing, an image region formed by reflection light from a portion other than the fundus from the fundus image obtained by the fundus photographing optical system; a gravity center calculating part to determine, by arithmetic processing, a gravity center position of the extracted image region; and a control part to perform alignment control of the photographing unit with the eye based on the calculated gravity center position and the alignment reference position.

Abstract: A lens module may include a first lens having positive refractive power, a second lens having positive refractive power, a third lens having refractive power, a fourth lens having positive refractive power, a fifth lens having negative refractive power, and a sixth lens having negative refractive power and having one or more inflection points formed on an image-side surface thereof. An overall focal length of the lens module f and a focal length of the first lens f1 may satisfy the following Conditional Expression: 1.0<f1/f<2.0??[Conditional Expression].

Abstract: A zoom lens includes a negative first lens group, an aperture, and a positive second lens group. The first lens group includes a negative first lens, a negative second lens, and a positive third lens. The second lens group includes a positive fourth lens, a negative fifth lens, a negative sixth lens, and a positive seventh lens, wherein the fifth lens is formed by adhering a positive lens and a negative lens, and the sixth lens is a meniscus lens. The zoom lens can be switched toward a telephoto mode from a wide mode by moving the second lens group from the image side toward the object side.

Abstract: An image display apparatus obtains a plurality of moving images obtained by capturing a plurality of imaging areas of a fundus, and a wide field of view image obtained by capturing an area including the plurality of imaging areas of the fundus. Each of the plurality of moving images is associated with pulse data based on a biomedical signal obtained in capturing the moving image. The image display apparatus superimposes and displays at least one frame of each of the plurality of moving images at a position on the wide field of view image, which is determined based on information about the positions of the plurality of imaging areas. In the superimposing/display operation, the image display apparatus displays the plurality of moving images at a display timing synchronized based on the pulse data.

Abstract: A zoom lens includes, in order from an object side to an image side, a first, a second, a third, a fourth, a fifth, a sixth and a seventh lens units respectively having positive, negative, positive, negative, positive, negative and positive refractive powers. A distance between adjacent lens units change during zooming so that a distance between the fourth lens unit and the fifth lens unit at a telephoto end is shorter than the distance at a wide angle end and a distance between the fifth lens unit and the sixth lens unit at the telephoto end is longer than the distance at the wide angle end. And the fourth lens unit moves during focusing.

Abstract: A zoom lens substantially consists of a first lens group having a negative refractive power and a second lens group having a positive refractive power arranged in order from the object side; that changes magnification by moving the first lens group and the second lens group; and wherein the first lens group is configured by a first lens having a negative refractive power, a second lens, a third lens having a negative refractive power, and a fourth lens having a positive refractive power, arranged in order from the object side. The zoom lens satisfies a predetermined conditional expression.

Abstract: A zoom lens includes, in order from an object side to an image side, first to fourth lens units having negative, positive, negative, and positive refractive power, respectively. During zooming from a wide-angle end to a telephoto end, at least the first, second, and third lens units move. The focal lengths of the first, second, and third lens units, the amount of movement of the second lens unit during zooming from the wide-angle end to the telephoto end, a lateral magnification at the wide-angle end of the second lens unit, a lateral magnification at the wide-angle end of the third lens unit, a lateral magnification at the telephoto end of the second lens unit, and the lateral magnification at the telephoto end of the third lens unit are appropriately set.

Abstract: A variable magnification optical system includes a relay lens group (a fifth lens group) substantially consisting of a relay front group and a relay rear group with a predetermined air space therebetween, and which is fixed during magnification change and has image formation action, and an extender lens group insertably and detachably arranged between the relay front group and the relay rear group, and which extends a focal length toward a telephoto side without changing an image formation position. The extender lens group substantially consists of a first lens group having positive refractive power and a second lens group having negative refractive power in this order from an object side. The second lens group is a cemented lens substantially consisting of a convex meniscus lens, a biconcave lens and a convex meniscus lens in this order from the object side.

Abstract: A zoom lens, including, in order from object side, a positive first unit, a negative second unit, a positive third unit, a negative fourth unit, and a positive fifth unit. The first unit includes, in order from object side, a negative first sub unit which does not move for focusing, a positive second sub unit which moves during focusing, and a positive third sub unit which does not move for focusing and includes a negative lens. 1.6<L2tm/L2t<1000.0; L2w/L3w<1.0; and ?0.5<f2/f3<?0.05 are satisfied, where L2t represents an second-third unit interval at a telephoto end, L2tm represents second-third unit interval at a zoom position at which an interval between the third and fourth units is minimum, L2w represents second-third unit interval at a wide-angle end, L3w represents third-fourth unit interval at the wide-angle end, and f2 and f3 represent focal lengths of the second and third units, respectively.