Abstract: A light-emitting diode (LED) backlight unit includes first and second curved bottom floor reflectors exhibiting mirror image symmetry along a center line extending in a latitudinal direction, first and second sides disposed along a longitudinal direction, the first and second bottom floor reflectors disposed therebetween, first and second back reflectors disposed on distal ends of the first and second bottom floor reflectors, respectively, away from the center line, and LEDs disposed in or adjacent to the first and second back reflectors. A curvature of the first and second bottom floor reflectors respectively reach a maximum near the center line.

Abstract: Provided is an optical encoder, including: a light receiving unit; and a scale moving relatively to the light receiving unit and including a first track and a second track each having patterns intended for projecting light onto the light receiving unit, wherein the number of patterns of the first track is Ns*Nd+i (where, Ns and i are an integer of 1 or greater, and Nd is an integer of 2 or greater), and the number of patterns of the second track is (Ns?1)*Nd+i, so an absolute angle of the scale can be calculated in real time and in high resolution.

Abstract: Embodiments of the disclosed technology are directed to a light fixture and a method of assembly thereof. The light fixture is generally formed of two opposing side rails joined to two opposing caps. The fixture has two panels: an upper panel and a lower panel. The upper panel is formed of a generally flat, deflectable elongated section having a plurality of lights disposed on or in a surface thereof. The upper panel is deflected to form a substantially curvilinear panel, the edges of which are engaged into a slot on the side rails and/or the end caps. The lower panel is also generally flat and formed of a transparent or translucent material. The lower panel is disposed below the upper panel, such that the light projected from the lights on the upper panel projects through the lower panel.

Abstract: The invention relates to a transimpedance gain circuit for temporally differentiating photo-sensing systems in dynamic vision sensors, which uses at least one photodiode and at least two in-series transistors, each of the transistors being connected in diode configuration and being positioned at the output of the photodiode. The output current from the photodiode flows through the drain-source channels of the transistors and the source of the last transistor in series is connected to a voltage selected from ground voltage, a constant voltage or a controlled voltage.

Abstract: A fluttering-flame simulation device having a shell, a flame body, an external force generating device mounted in the shell, and at least one light-emitting device; the flame body is provided with a flame sheet imitating the shape of flame; the flame sheet extends out of the shell through a through hole in the shell; light of the light-emitting device is projected upon the flame sheet; a lower portion of the flame body is provided with a hollow cone; the shell is provided inside with a support member, which extends into the cone at the lower portion of the flame body to support the flame body, making the flame body still able to return to the initial vertical state after shaking around a support point under the force from the external force generating device, thus forming a tumbler-type flame body.

Abstract: An optical device for transforming an input light distribution from an LED light source to provide an omni-directional output light distribution for solid-state lighting is disclosed. The optical device has a conical form, comprising first and second coaxial cones of different refractive index, defined by coaxial inner and outer cone surfaces, which converge from a cone base to a rounded tip at the apex. Preferably, each of the inner and outer cone surfaces comprises a plurality of conical facets defining a grating structure. The inner cone, i.e. air cavity, is directly coupled to an LED emitter area. Cone angles and spacings of conical facets, defining inner and outer gratings, are tailored to reshape a predetermined input light distribution. Apertures assist in heat dissipation. A lightweight, compact device with high transmission efficiency can be manufactured at low cost by one-step injection molding from an optical-grade polymer, such as PMMA.

Abstract: An optoelectronic sensor for recognizing object edges of objects comprises at least three light transmitters which are arranged such that at least two different spacings result between two respective light transmitters. For recognizing an object edge, an evaluation unit is configured to carry out a common evaluation of an image taken by a light receiver of a light spot generated by the transmitted light beams of a first light transmitter and of an image taken by a light receiver of a light spot generated by the transmitted light beams of another light transmitter. The pair of light transmitters to be used for the common evaluation can be selected in dependence on a selection criterion from at least two differently spaced apart pairs of light transmitters.

Abstract: A combined anti-collision and navigation light unit for an aircraft includes a light source, having at least one LED and having a source-side light intensity distribution, and a lens cover with a shape that is configured to transform the source-side light intensity distribution into an output light intensity distribution of the combined anti-collision and navigation light unit.

Abstract: An energy-saving and high brightness lighting fixture includes a light cover, a circular plate, a light-collecting lens, a housing body and an electronic device. The light cover is tubular with a plurality of heat sinks and a cooling tank. A circular plate is riveted with light cover's engaging portion, and an LED lamp is disposed on it. A light-collecting lens is disposed on the top of the light cover. A housing body's surface with fixture block and limiting strip, which housing body is inserted in the restricting groove by limiting strip and using fixture block to fix at ring groove of light cover. An electronic device has a main circuit board and at least one auxiliary circuit board, and electronic device can be inserted inside the light cover to reduce the volume and enhance the cooling effect.

Abstract: In a device for transmitting signals on two channels between two sub-assemblies rotatable relative to each other about an axis, a photodetector and a light source are connected via connecting lines to a receiver circuit and transmitter circuit. At least one of the connecting lines has a section extending with a radial directional component. The beam path of one channel extends with an axial directional component radially outside relative to the beam path of the optical signal of the other channel, past the section of the at least one connecting line.

Abstract: Electronic devices may be provided with light sensors. Light sensors may be proximity sensors or ambient light sensors. Proximity sensors may include a light-emitting component and a light-sensitive component. The electronic device may include an enclosure formed from housing structures and some or all of a display for the device. The enclosure may include openings such as openings formed from clusters of smaller openings. Each light sensor may receive light through one of the clusters of openings. The light sensor may receive the light directly through the openings or may receive light that passes through the openings and is guided to the light sensor by light guiding structures. The light guiding structures may include fiber optic structures or light-reflecting structures. Fiber optic structures may fill or partially fill the openings. Light reflecting structures may be machined cavities in an internal support structure.

Abstract: Embodiments of the present invention provide a light guiding plate, a backlight module and a display device. The light guiding plate comprises a body having an effective light guiding region corresponding to an effective display region of a display panel and a peripheral region located at peripheries of the effective light guiding region, and a supporter installed in the peripheral region for providing a support force in a direction opposite to a direction of gravity of the body. Since the supporter provides a support force in a direction opposite to a direction of gravity of the body of the light guiding plate, problem of deformation of the light guiding plate due to gravity can be prevented.

Abstract: A luminous multiple glazing unit of a door of furniture notably refrigerated includes a first sheet of mineral glass or organic glass, a second sheet separated from the first sheet by peripheral spacer, a peripheral light source with a source support, a light extraction device for extracting the guided light to form at least one luminous zone, the source support being in a housing surrounded by material, forming a framing, including an assembly element, covered by a cap, the cap and the diode support being removable from the glazing unit.

Abstract: A lighting device provides a storage tray or cavity. The lighting device includes a head section pivotally connected to a base section via a connection assembly. The head section includes a light source, and the base section includes a storage cavity with a magnetic floor. The connection assembly allows the head section to be variably positioned relative to the base section by pivoting simultaneously about mutually orthogonal axes, one of which is fixed relative to the base section, and the other of which is movable relative to the base section. The lighting device may optionally include removable tools, such as a telescopic pick-up tool, and/or various means for attaching the lighting device to a support.

Abstract: A projector has plural liquid crystal light valves each of which modulates color light, a cross dichroic prism which combines the color lights modulated by the plural liquid crystal light valves, and a projection lens which projects the light combined by the cross dichroic prism. The projector includes: a holding unit which holds the liquid crystal light valve; and a supporting member having a body unit supported to the cross dichroic prism and first plate-like portions which protrude from the body unit and support the holding unit. The first plate-like portions are inclined from a vertical plane including an optical axis of the liquid crystal light valve.

Abstract: A solid-state imaging device includes a plurality of pixels, wherein one or more of the plurality of pixels have a pupil dividing portion and a light receiving portion, the light receiving portion includes a plurality of photoelectric conversion regions, an element isolation region is provided between adjacent ones of the plurality of photoelectric conversion regions, and wherein a scatterer is provided within the pupil dividing portion and above the element isolation region, and the scatterer is formed from a material of a refractive index smaller than a refractive index of a material of the pupil dividing portion peripheral to the scatterer.

Abstract: Disclosed is a light-emitting diode (LED) lighting apparatus having a multifunctional heat sink flange, which includes an LED board on which a transmitted light cap and a plurality of LEDs are mounted, a main heat sink formed of magnesium or an magnesium alloy, an auxiliary heat sink formed of a conductive/polymeric resin material for heat dissipation, a heat sink upper case formed of a conductive/polymeric resin material for heat dissipation, and a power supply. The main heat sink includes multiple streamlined heat sink segments that are integrally formed on an outer surface thereof so as to radially protrude to allow air to flow in all directions, and a heat sink flange formed along an outer circumference of a bottom thereof such that omega-shaped wings having enclosed holes and inverse omega-shaped open holes are alternately formed.

Abstract: A wavelength conversion member is disclosed. In one aspect, the wavelength conversion member includes a first substrate, a second substrate formed over the first substrate, and a wavelength conversion layer interposed between the first and second substrates. A sealant is interposed between the first and second substrates and surrounds the wavelength conversion layer.

Abstract: A lamp includes a light source, a cover configured to block the transmission of light from the light source, and a cover interface portion configured to interface with the cover such that the cover is disposed for upward and downward movement with respect to the light source between a first position configured to fully block the transmission of light from the light source and at least one second position configured to allow light from the light source to illuminate an area around the lamp. A track system, operatively associated with the cover, includes at least one track and at least one tracking element. The track system is configured for retaining the at least one tracking element for sliding movement along the at least one track to enable the cover to be held at various heights.

Abstract: An imaging device comprising comprises a matrix of pixels, at least one data conductor connected to several pixels of the matrix, organized row-wise and successively transporting signals delivered by respectively the pixels of the row and an electronic current generator supplying several pixels, each of the pixels comprising: a transistor delivering at the node of the pixel, the signal delivered by the pixel considered and wherein can flow a bias current from the current generator, and a first electronic switch connecting the node of the pixel to the data conductor associated with this pixel as a function of a selection signal of the pixel. Each of the pixels comprises a second electronic switch, distinct from the first electronic switch, joined to the node of the pixel, the current arising from the generator to be made to flow in the transistor as a function of the selection signal for the pixel.