Abstract: An aircraft beacon light unit has an operating light emission distribution. The operating light emission distribution has a first light emission opening angle of at least 150° in a first cross-sectional plane, and a second light emission opening angle of at most 180° in a second cross-sectional plane orthogonal to the first cross-sectional plane. The aircraft beacon light unit is configured in such a way that it is mountable to an aircraft with the first cross-sectional plane being oriented in a vertical direction and the second cross-sectional plane being oriented in a horizontal direction, and the first light emission opening angle extends at least 75° both above and below the second cross-sectional plane.

Abstract: A light source unit includes a first light source configured to emit light in a first wavelength range, a second light source configured to emit light in a first wavelength range, a first dichroic mirror configured to reflect the light in the second wavelength range incident thereon at a first incident angle and transmit the light in the second wavelength range incident thereon at a second incident angle, which is different from the first incident angle, and a second dichroic mirror configured to reflect the light in the second wavelength range that has passed through the first dichroic mirror, wherein after having been reflected by the second dichroic mirror, the light in the second wavelength range is incident on the first dichroic mirror at the first incident angle to then be reflected by the first dichroic mirror.

Abstract: A wavelength conversion element includes a first phosphor region and a second phosphor region. The second phosphor region is disposed in a thickness direction of the first phosphor region and has a phosphor particle with a particle size different from a particle size of a phosphor particle positioned in the first phosphor region.

Abstract: The present disclosure relates to an LED active luminous traffic marking based on light-transmitting concrete and a construction method thereof. The luminous traffic marking includes a light-transmitting concrete layer and a light source layer that are arranged vertically, where the light-transmitting concrete layer includes a concrete base and a plurality of light-guide fibers embedded in the concrete base, the light source layer includes an integrated LED light source board and a packaging protective shell for packaging the integrated LED light source board, the packaging protective shell is a shell with anchoring hollow protrusions, and the packaging protective shell is anchored to the concrete base through the anchoring hollow protrusions. Compared with the prior art, the present disclosure improves the visibility, digitalization and intelligence level of road traffic markings, and has a broad application prospect.

Abstract: An illumination apparatus includes a case, a plurality of oscillators configured to generate electromagnetic waves, and housed in the case and arranged two-dimensionally, a window unit configured to emit therefrom the electromagnetic waves, and disposed on a first side of the case, a plurality of inflow holes configured to allow fluid to flow into the case, and disposed at positions at which the electromagnetic waves from the window unit propagate, and a discharging unit configured to discharge the fluid, which has flowed into the case, out of the case, and disposed on a second side of the case, which is an opposite side to the first side. When the oscillator is viewed from the window unit, a part of the oscillator is located on an inner side of the inflow hole, and the fluid which has flowed into the case through the inflow hole reaches the oscillator.

Abstract: A fixture for a lamp and to a lighting element are provided that is usable as a reading light, for example in a vehicle or aircraft. The fixture is adapted to be releasably installed in an opening of an accommodating element and includes a cylindrical mounting element having a lateral wall, a front side, and an opposite rear side. The front side has an opening for receiving the lamp. The lateral wall has a radially outwardly projecting rib and a radially outwardly projecting latching element.

Abstract: A light source module, including a circuit board, a light-emitting element, a light-guiding plate, a first waterproof layer, a second waterproof layer, and a third waterproof layer, is provided. The light-emitting element is configured on the circuit board. The light-guiding plate includes at least one through hole. The circuit board is configured on a first surface of the light guide plate so that the light-emitting element inserts into the at least one through hole. The first waterproof layer is located on a second surface of the light-guiding plate that is opposite to the first surface, and covers the at least one through hole. The second waterproof layer is located between the first surface and the circuit board. The third waterproof layer is located between the second surface and the first waterproof layer.

Abstract: The abandoned vehicle messaging sign comprises a housing, a control circuit, a display surface, and a vehicle. The control circuit and the display surface mount in the housing. The housing mounts on the vehicle. The abandoned vehicle messaging sign displays an image of indicia indicating a sentiment that the vehicle has been abandoned. By abandoned is meant that the vehicle has been left temporarily unattended. The sentiment indicated by the abandoned vehicle messaging sign is customizable to the specific circumstances regarding the abandonment of the vehicle.

Abstract: A lighting device disclosed in an embodiment of the invention includes a substrate; a light source including a plurality of light emitting devices disposed on the substrate; a resin layer disposed on the substrate; and a first diffusion layer disposed on the resin layer, wherein the resin layer includes a first resin portion disposed on the light source, and a second resin portion adjacent to the first resin portion and disposed on the substrate. The upper surface of the first resin portion has an inclination and is spaced apart from the first diffusion layer, the second resin portion includes a material different from that of the first resin portion, and the second resin portion based on the upper surface of the substrate. The height of the upper surface may be greater than the lowermost height of the upper surface of the first resin portion.

Abstract: A luminaire and an illumination system are disclosed. In an embodiment a luminaire includes at least one light-emitting semiconductor chip having a main emission side and a reflector having a reflection side facing the main emission side, the reflection side being a freeform different from a circle, an ellipse, a parabola or a hyperbola when seen in cross-section, wherein a base line of the reflector runs through the main emission side and a local height of the reflection side is measured against the base line, wherein a local focal length of the reflection side is increased along the local height, concerning ray bundles coming in parallel with the base line from an exterior of the luminaire during operation, and wherein local heights do not have a common focal point.

Abstract: In one aspect, a retrofit and complimentary light assembly for emitting light can be installed in a ceiling with an existing light fixture as a secondary source to provide UVC emitting light for sterilization purposes or alternative visible light for aesthetic purposes. In yet another embodiment, it can be installed as a standalone light system without an existing light fixture into a ceiling with T-bar supports.

Abstract: Provided herein is an electronic device. In certain embodiment, the electronic device may comprise: a housing; a cover disposed on at least a portion of the housing; at least one fastening member connected to the housing and configured to be detachably fastened around a human body; at least one light emitting structure disposed in an internal space of the housing; and a waterproof member that is between the housing and the cover, having a closed loop shape sealing the internal space, wherein the waterproof member comprises light scattering material, wherein the light emitting structure is configured to emit light that is at least partially visible from outside through the waterproof member.

Abstract: A fluorescent member includes: a wavelength converter including an incidence part on which a light of a light source is incident and an output part from which a converted light subjected to wavelength conversion as a result of excitation by an incident light is output; and a reflecting part provided in at least a portion of a surface of the wavelength converter. The wavelength converter is comprised of a material whereby a degree of scattering of the light of the light source incident via the incidence part and traveling toward the output part is smaller than in the case of a polycrystalline material.

Abstract: Provided is a display device. The display device includes a display panel, a light guide plate disposed behind the display panel, a light source module configured to emit light toward the light guide plate, a mounting housing on which the light source module is mounted, the mounting housing being made of a metal material, a back cover configured to cover the mounting housing from a rear side, a lower cover bent forward from a lower end of the back cover to cover the mounting housing from a lower side, a guide frame configured to surround a circumference of the display panel and cover the lower cover, a decor panel including a lower panel configured to cover the guide frame from a lower side and a front panel extending upward from a front end of the lower panel, a screw coupled to the lower cover by sequentially passing through the lower panel and the guide frame, and a heat insulating member disposed between a head of the screw and the lower panel.

Abstract: A linear light fixture assembly comprises a linear housing structure with a linear mounting region, the linear mounting region including an exposed passage having a first lateral dimension and configured to be secured to a ceiling mounting structure on a ceiling, the ceiling mounting structure having a second lateral dimension, and a linear conduit structure having opposed surfaces which are spaced by a third lateral dimension, wherein the linear housing structure and/or the linear conduit structure are configured so that the first, second/or and third lateral dimensions enable the linear conduit structure to extend past the ceiling mounting structure into the exposed passage to deliver power to one or more light sources to be located in the housing.

Abstract: A light fixture includes a mounting housing comprising a junction box, a first flange and a plurality of heat dissipation fins, and a second housing comprising a second flange. The mounting housing is mountable in an aperture in a panel, and the second housing is mountable to the first housing.

Abstract: A refrigerator includes a cabinet, a door, an out plate that defines a front surface of the door, a display part at the out plate that defines plate holes configured to display operation information of the refrigerator by transmission of light through the out plate, light emitting members in the door at positions corresponding to the plate holes, hole filling members that fill the plate holes, and a first layer located at a surface of the hole filling members. The first layer includes a light blocking part, and light transmission parts positioned in an inner region of the plate holes. The display part is configured to transmit light having passed through one or more of the light transmission parts corresponding to one or more of the light emitting members.

Abstract: A detecting device for detecting a rotation speed of the color wheel includes: a first processing unit, used to compare an external ambient temperature with a preset temperature, and outputs a logic level when the external ambient temperature is greater than the preset temperature; and a light-emitting unit, including a light-emitting body for emitting measurement light, a temperature compensation circuit, wherein the temperature compensation circuit adjusts, according to the logic level and the external ambient temperature, the resistance of a circuit in which the light-emitting body is located, causing a driving current of the light-emitting body to be within a preset current range, a reflection unit disposed on a moving color wheel and used to reflect measurement light, and a measurement and control unit used to receive the measurement light emitted periodically by the reflection unit, and to calculate the number of times that the measurement light enters.

Abstract: A light source device includes a casing including one end surface, other end surface, and one side surface between the one end surface and the other end surface, a light emitting unit provided on a side of the one end surface in the casing, a heat radiating unit provided in the casing and thermally connected to the light emitting unit, an exhaust port formed at least in a region located in one side surface and facing the heat radiating unit, an axial fan which is provided in the casing and supplies cooling air to the heat radiating unit, and a shielding deflecting plate which is provided between the axial fan and the heat radiating unit and shields a part of the cooling air supplied from the axial fan and deflects a part of the cooling air to a direction away from the exhaust port.

Abstract: The first dichroic filter is in a region including a circumference having a first radius, transmits source light and reflects fluorescence. The phosphor is in a region having a predetermined angular width of a region including a circumference having the first radius, and excited by source light to generate fluorescence. The first transmission window is in a region different from the region of the phosphor and transmits incident light. The second dichroic filter is in a region having a predetermined angular width of a region including a circumference having a second radius, and transmits source light and reflects incident light. The second transmission window is in a region different from the second dichroic filter and transmits source light. The diffusion film is on one of the first and second transmission windows, and diffuses incident light.