Abstract: A 3D grating box, a color filter substrate and a display device are disclosed. The 3D grating box comprises: a photoelectric conversion device for converting optical energy into electric energy; a transparent electrode electronically connected to a first side of the photoelectric conversion device; a grating electrode electronically connected to a second side of the photoelectric conversion device opposite to the first side, the grating electrode comprises a plurality of opaque strip conductors that are arranged side by side at intervals; a storage battery having a first end electronically connected to the transparent electrode and a second end electronically connected to the grating electrode; and a substrate, the grating electrode being arranged on one side of the substrate. The 3D grating box combines the 3D display with the solar cell effectively, simplifying the manufacturing process.

Abstract: A light field display for providing continuous 3D images to viewers at multiple views is provided. The light field display includes a pixel layer having a plurality of pixel layer elements, a resonant subwavelength lens layer having a plurality of resonant subwavelength lenses and a circuit board connected to the pixel layer and the resonant subwavelength lens layer. Each resonant subwavelength lens in the resonant subwavelength lens layer is integrated with an element in the pixel layer. The element may be either a pixel or a subpixel, such that each image view may be provided per pixel or subpixel in the pixel layer.

Abstract: Provided is a microscope objective lens that sufficiently corrects on-axis and off-axis chromatic aberrations and that has a long working distance. A microscope objective lens OL includes, in order from an object side, a first lens group G1 with positive refractive power and a second lens group G2 with negative refractive power. The first lens group G1 of the microscope objective lens OL includes a diffractive optical element GD including a diffractive optical surface D, and the diffractive optical element GD is arranged at a position closer to the image than a section where a diameter of a light flux passing through the first lens group G1 is the largest.

Abstract: The disclosure generally relates to highly efficient light duct light splitters that are capable of splitting the light propagating within a light duct into two different ducts, with nearly 100 percent efficiency. In particular, the described light splitters are configured in a “Tee” shape with a reflective splitter element.

Abstract: Apparatus and methods to increase the depth of field in human vision in order to correct for loss in refocusing ability. Optics variations, such as changes in thickness, shape, or index of refraction of contact lenses, intraocular implants, or the shape of the cornea or eye lens, affect the phase, or wavefront, of the light perceived by the eye. The optics variations are chosen such that the resulting optical transfer function remains relatively constant over a desired range of object distances and pupil diameters.

Abstract: An optical reflecting device includes a movable plate having a reflecting surface, a first support portion, a first drive part, a first frame, and a monitor part for detecting the rotation of the movable plate. The first support portion is connected to the movable plate. The first drive part is formed in the first support portion and rotates the movable plate about a first axis. The first frame contains the movable plate and the first support portion, and is connected to the first support portion. The monitor part extends from that portion of the outer periphery of the movable plate which is most distant from the first axis.

Abstract: Eyewear includes a set of lenses, a frame, and a pair of arms. A primary attachment feature facilitates attachment of the arms to the frames. A secondary attachment feature facilitates attachment of the arms to the frames in case the primary attachment feature becomes partially or wholly dysfunctional. A concealment feature at least partially conceals the secondary attachment feature. The concealment feature is detachable to permit use of the secondary attachment feature. In an example embodiment, the concealment feature is formed as an integral breakaway component of the arms.

Abstract: An imaging lens assembly includes, in order from an object side to an image side: an aperture stop; a first lens having a positive refractive power; a second lens having a negative refractive power; a third lens having a positive refractive power; a fourth lens having a negative refractive power. A focal length of the imaging lens assembly is f, a focal length of the first lens is f1; a focal length of the second lens is f2; a curvature radius of the object side surface of the first lens is R1; a curvature radius of the image side surface of the first lens is R2; a curvature radius of the object side surface of the second lens is R3; a curvature radius of the image side surface of the second lens is R4, and the lens assembly satisfies the following conditions: 1.08?f1/f?1.20; ?4.00?f2/f??2.50; ?1.50?(R1+R2)/(R1?R2)??1.25; 1.30?(R3+R4)/(R3?R4)?5.00.

Abstract: An optical system having coherence reduction capabilities includes a light source for generating a first light pulse; an asymmetrical pulse stretcher arranged to receive the first light pulse and to generate multiple light pulses, during a pulse sequence generation period, wherein the asymmetrical pulse stretcher includes multiple optical components which define a loop and a condenser lens is located between the asymmetrical pulse stretcher and an object, for directing the multiple pulses toward an area on the object At least two optical components of the multiple optical components are positioned in an almost symmetrical manner in relation to each other and introduce a coherence-related difference between at least two pulses of the multiple pulses. The pulse sequence generation period does not exceed a response period of a detector.

Abstract: Curved bezel-concealing display covers and display devices are disclosed. In one embodiment, a bezel-concealing display cover for coupling to a display device having a bezel and a display panel includes a curved perimeter portion having a first surface and a second surface, wherein the curved perimeter portion is configured to be offset from the bezel of the display device by a varying gap GA. The bezel-concealing display cover further includes an array of prisms on at least one of the first surface or the second surface of the curved perimeter portion. The array of prisms extends from an edge of the curved perimeter portion to a distance L. The array of prisms and the curved perimeter portion is configured to shift a portion of an image proximate the bezel produced by the display panel such that the shifted portion of the image appears over the bezel to an observer.

Abstract: An optical photographing lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element has refractive power. The second lens element has positive refractive power. The third lens element with positive refractive power has an image-side surface being concave in a paraxial region thereof. The fourth lens element has refractive power. The fifth lens element with refractive power has an image-side surface being concave in a paraxial region thereof, wherein an object-side surface and the image-side surface of the fifth lens element are aspheric, and at least one of the surfaces of the fifth lens element has at least one inflection point. The optical photographing lens assembly has a total of five lens elements with refractive power.

Abstract: A zoom lens and a photographing apparatus having the zoom lens are provided. The zoom lens includes: a first lens group having a positive refractive power; a second lens group having a negative refractive power; a third lens group including a shutter and having a positive refractive power; a fourth lens group having a positive refractive power, a fifth lens group having a negative refractive power, and a sixth lens group having a positive refractive power, wherein the first, second, third, fourth, fifth, and sixth are arranged from an object side toward an image side, and when the zoom lens zooms from a wide angle position to a telephoto position, the third lens group is fixed, and the first, second, fourth, fifth, and sixth lens groups are moved.

Abstract: A heads-up display device for displaying graphic elements in view of a user while the user views an environment through a display screen. The heads-up display device includes at least one projector that projects a graphic element on a frontal focal plane in view of the user while the user views the environment through the display screen, and at least one projector that projects a graphic element on a ground-parallel focal plane in view of the user while the user views the environment through the display screen. The projector that projects the graphic element on the frontal focal plane is mounted on an actuator that linearly moves the projector so as to cause the frontal focal plane to move in a direction of a line-of-sight of the user. The projector that projects the ground-parallel focal plane is fixedly arranged such that the ground-parallel focal plane is static.

Abstract: A photographing lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, and a sixth lens element. The first lens element has positive refractive power. The second lens element has refractive power. The third lens element has positive refractive power. The fourth lens element with refractive power has an object-side surface being concave in a paraxial region thereof. The fifth lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The sixth lens element with refractive power has an image-side surface being concave in a paraxial region thereof. The photographing lens assembly has a total of six lens elements with refractive power.

Abstract: A lens drive device comprises a base, a lens holder, a piezoelectric actuator having a pair of frictional parts, and a pressing piece. The lens holder has a barrel, a projection projecting from the barrel, a support separated from the barrel, and a joint joining the projection and the support to each other. The pressing piece presses the piezoelectric actuator against the barrel so as to keep such a state that at least one of the pair of frictional parts is in contact with the barrel.

Abstract: An example embodiment includes eyewear. The eyewear includes a lens, a brow piece, and two temple assemblies. The brow piece is configured to secure the lens. The two temple assemblies are coupled to the brow piece by two hinges. Each temple assembly includes a temple substrate, a covered portion, and a metal insert. The covered portion is formed on the temple substrate. The metal insert is located within the temple substrate. The metal insert is configured to impose a spring load against a head of a user to secure the eyewear to the head.

Abstract: A zoom lens includes, in order from the object side, a first lens group having a negative refractive power, a second lens group having a positive refractive power and a third lens group having a positive refractive power, wherein, during magnification change from the wide-angle end to the telephoto end, at least the first lens group and the second lens group are moved along the optical axis such that the interval between the first lens group and the second lens group is decreased and the interval between the second lens group and the third lens group is increased. The second lens group includes, in order from the object side, a positive lens, a cemented lens formed by a positive lens and a negative lens, a positive lens and a negative lens. The zoom lens satisfies given conditional expressions.

Abstract: An adhesive film for a reflection sheet and a reflection sheet using the adhesive film is provided. The adhesive film comprises a plastic base film having a heat shrinkage of ?0.1 to 0.5% at 150° C. in machine and transverse directions; an adhesive layer formed on one side of the base film by applying an adhesive composition; and an anchor coating layer formed on the other side of the base film, opposite to the side on which the adhesive layer is formed. The adhesive film for a reflection sheet according to the present invention is manufactured by applying an adhesive composition on a plastic base film where heat shrinkage is controlled. Thus, the adhesive film has superior dimensional stability at a high temperature and excellent workability in a post process for laminating a reflection layer. Partial detachment does not occur when an adhesive layer is detached from an adherent, and stable physical properties can be achieved.

Abstract: A zoom lens includes, in order from the object side, a negative first lens group, a positive second lens group and a positive third lens group, wherein, during magnification change from the wide-angle end to the telephoto end, at least the first and second lens groups are moved such that the interval between the first and second lens groups decreases and the interval between the second and third lens groups increases. The first lens group includes a negative meniscus first-group first lens with a convex object-side surface, a negative meniscus first-group second lens with a convex object-side surface, and a positive first-group third lens with a convex object-side surface, and the second lens group includes a positive lens, a cemented lens formed by a positive lens and a negative lens, a positive lens and a negative lens, in order from the object side. The zoom lens satisfies given conditional expressions.

Abstract: The imaging lens substantially consists of a front group having positive refractive power, an aperture stop, and a rear group having positive refractive power in this order from the object side. The front group includes two positive meniscus lenses with convex surfaces toward the object side, and one negative meniscus lens with a convex surface toward the object side; and the rear group includes an aspheric lens and a three-cemented lens in this order from the object side.