Abstract: An imaging lens assembly includes a plastic barrel and a lens element set. The lens element set is disposed in the plastic barrel and has an optical axis. The lens element set includes an object-side lens element and an image-side lens element. The object-side lens element has an outer diameter surface and an optical effective portion, and includes a conical-aligning surface located on an image-side surface of the object-side lens element and for coaxially aligning and connecting the image-side lens element.

Abstract: A supporting and handling system for optical devices, in particular telescopes, radio-telescopes or sun concentrators, and instrumentation, is described, comprising: a primary unit; an independent secondary unit; first motored means for moving the primary unit; second motored means for moving the secondary unit; an arc-shaped structure equipped with sliding guides in altitude with respect to the ground for the rotation of the secondary unit with respect to an altitude rotation axis; a hexapod system to move the primary unit; and a control system.

Abstract: An ophthalmic imaging apparatus includes a first splitting unit configured to split return light from a subject irradiated with measurement light in two directions, first and second light receiving units configured to receive the first and second light beams obtained by the first splitting unit through first and second apertures disposed in respective optical paths of the first and second light beams, respectively, a generation unit configured to generate an image in accordance with light reception signals from the first and second light receiving units; and a moving unit configured to move the first and second apertures in a plane perpendicular to an optical axis. The moving unit moves the first and second apertures independently.

Abstract: This disclosure describes a novel lens system having an entrance pupil at a location matching, or nearly matching, the eye's optical system entrance pupil. The described lens system is significantly thinner than a single-aperture lens with matched entrance pupil and is achieved by using an array of camera elements. Each camera element contains camera optics called “lenslets” and a sensor (e.g., an image or depth sensor), where a lenslet can include one or more lens elements (e.g., a compound lens). Individual camera elements can be arranged such that THEIR optical axes intersect at, or near, the eye's entrance pupil location. In addition, each camera element's field-of-view (FOV) corresponds to a small sector of a large FOV. The FOVs of adjacent camera elements can be non- or slightly-overlapping so that a wide-angle image can be formed by concatenation of the individual camera element images.

Abstract: There is provided an optical body with improved antireflection capability, a display device, and a method for manufacturing an optical body, the optical body including: a first concave-convex structure formed on a surface of a base material; and a second concave-convex structure superimposed on the first concave-convex structure. An average concave-convex period of the first concave-convex structure is larger than a wavelength in a visible light region, an average concave-convex period of the second concave-convex structure is less than or equal to the wavelength in the visible light region, and projecting parts of the second concave-convex structure extend in a direction normal to a flat plane of the base material.

Abstract: An optical system (OL) used for an optical apparatus such as a camera (1) includes a focusing group (Gf) that moves upon focusing, a diffractive optical element (GD) disposed on an object side of the focusing group (Gf) and a negative lens element (L1n) disposed on the object side of the diffractive optical element (GD). The optical system (OL) satisfies the following expressions 0.030<f/fpf<0.050 nd1n+0.006×?d1n<1.910 35<?d1n where, f: focal length of whole system in infinity focusing state fpf: focal length of diffractive optical element (GD) nd1n: refractive index of medium of negative lens element (L1n) on d-line ?d1n: Abbe number of medium of negative lens element (L1n) on d-line.

Abstract: An optical system is provided, including a first optical member driving mechanism, a second optical member driving mechanism, and a first fixing component. The first optical member driving mechanism includes a first fixed portion, a first movable portion, a plurality of elastic members, and a first driving module. Each of the elastic members is elastically connected to the first fixed portion and the first movable portion. The second optical member driving mechanism includes a second fixed portion, a second movable portion, and a second driving module. The second movable portion is movably connected to the second fixed portion. The second driving module can drive the second movable portion to rotate relative to the second fixed portion. The first fixing component affixes the first optical member driving mechanism to the second optical member driving mechanism.

Abstract: In an optical display system that includes a waveguide with multiple diffractive optical elements (DOEs), gratings in one or more of the DOEs may have an asymmetric profile in which gratings may be slanted or blazed. Asymmetric gratings in a DOE can provide increased display uniformity in the optical display system by reducing the “banding” resulting from optical interference that is manifested as dark stripes in the display. Banding may be more pronounced when polymeric materials are used in volume production of the DOEs to minimize system weight, but which have less optimal optical properties compared with other materials such as glass. The asymmetric gratings can further enable the optical system to be more tolerant to variations—such as variations in thickness, surface roughness, and grating geometry—that may not be readily controlled during manufacturing particularly since such variations are in the submicron range.

Abstract: The invention provides a mechanically flexible, electrically conductive, and optically transparent silver nanowire film and demonstrates its specific application in light transmission controlling devices.

Abstract: An optical imaging lens assembly includes three lens elements which are, in order from an object side to an image side: a first lens element, a second lens element and a third lens element. Each of the three lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The object-side surface of the first lens element is concave in a paraxial region thereof. The object-side surface of the first lens element is aspheric and has at least one inflection point. The object-side surface of the first lens element has at least one critical point in an off-axis region thereof. The optical imaging lens assembly has a total of three lens elements.

Abstract: An optical element driving mechanism is provided. The optical element driving mechanism includes a case, a bottom, a holder, a driving assembly, and a position sensing assembly. The bottom is connected to the case. The holder is disposed on the bottom and holds an optical element with an optical axis. The driving assembly drives the holder to move. The position sensing assembly senses the holder. The position sensing assembly includes a magnetic element, a sensor, and a magnetic-permeable element. The magnetic element is disposed on the holder. The sensor senses the magnetic element. The magnetic-permeable element is disposed adjacent to the sensor. The magnetic element and the sensor are arranged along a first direction. The sensor and the magnetic-permeable element are arranged along a second direction. The first direction is different from the second direction.

Abstract: A system, method and program product for delivering augmented reality content to a user includes a data processing system receiving data indicating the focal point of the contact lens user and delivering augmented reality content to the user via the contact lens at the focal point, the data including data regarding a shape of an eye lens. Alternatively, the data is based on a cognitively predicted activity of the user, the cognitively predicted activity being based on contextual information.

Abstract: The disclosure provides a light-adjusting glass, including an outer light transmissive layer and an inner light transmissive layer, a microstructure layer bonded to or disposed on an inner surface of the outer light transmissive layer and provided with a reflective microstructure, a sealing member bonded to an end portion of the outer light transmissive layer and an end portion of the inner light transmissive layer, the sealing member, the microstructure layer and the inner light transmissive layer enclosing a space having a predetermined volume. A predetermined amount of a first substance is disposed within the space. The disclosure also provides a method for preparing a light-adjusting glass. The light-adjusting glass of the present disclosure does not require an electric field to control the light-adjusting.

Abstract: Provided is an optical system including, in order from object side to image side, a positive first lens unit (LU), a positive second LU and a third LU, in which intervals between adjacent LUs are changed during focusing. The second LU moves toward object side during focusing from infinity to the closest distance. In order from object side to image side, second LU includes at least one positive lens, a negative lens Ln having a meniscus shape that is concave toward image side, an aperture stop, and a cemented lens consisting of a plurality of lenses and an optical element Gp cemented to one another and having a concave lens surface on object side, then third LU includes a positive lens and a negative lens. A refractive index of a material of Ln with respect to d-line and a partial dispersion characteristic of a material of Gp are appropriately set.

Abstract: Provided are an optical lens assembly and a method of forming an image. The optical lens assembly includes: a first lens having a convex object-side surface; a second lens having a convex object-side surface; at least one lens at an image side of the second lens; a first stop being a variable stop at an object side of the first lens; and a second stop at an image side of the first lens, wherein the second stop determines a minimum F number, and the first stop is variable to determine an F number greater than the minimum F number.

Abstract: A method of manufacturing a button-enabled housing assembly includes pre-forming a composite button component or insert having an elastically flexible button membrane that is mounted on a rigid frame, and thereafter molding a housing over the button insert. The composite button insert is formed in a co-molding operation and can include a rigid island in the flexible button membrane for supporting a cosmetic keycap.

Abstract: A lens includes a first interface acting as a refractive entrance surface for a light ray, a second interface acting as a total inner reflective (TIR) surface for the light ray entering the lens through the first interface, and a third interface acting as a refractive exit surface for the light ray reflected at the second interface. A method of producing a lens includes shaping the second interface and the third interface so that at least two light rays having a diverging angle to each other and impinging under an arbitrary solid angle onto the first interface exit the lens in the area of the third interface substantial parallel to each other and in a common direction of space.

Abstract: An optical element includes a primary electrode, a secondary electrode overlapping at least a portion of the primary electrode, and a structurally-modified and transparent electroactive polymer disposed between and abutting the primary electrode and the secondary electrode. An optical device may include a tunable lens and an optical element disposed over at least one surface of the tunable lens.

Abstract: An optical-lens-set includes a first lens element of a concave image-side surface near its optical-axis, a sixth lens element of negative refractive power and of a concave image-side surface near its optical-axis to go with a fifth lens element of a concave object-side surface near its optical-axis or with a seventh lens element of negative refractive power. The Abbe number ?1 of the first lens element, the Abbe number ?3 of the third lens element, the Abbe number ?4 of the fourth lens element, the Abbe number ?5 of the fifth lens element, the Abbe number ?6 of the sixth lens element and the Abbe number ?7 of the seventh lens element together satisfy 5?5?1?(?3+?4+?5+?6+?7).

Abstract: A lens unit may include a plurality of lenses, and a mirror cylinder that holds the plurality of lenses. At least one of the plurality of lenses may include a glass lens held in a lens holder having a cylinder part. The lens holder may include an annular projection part that protrudes radially inward from the cylinder part, on the opposite side of the cylinder part from an installation opening for the glass lens. The glass lens may be press-fitted and fixed in the cylinder part with a gap between the glass lens and the annular projection part.