A light emitting device array is provided. The light emitting device array comprises a light emitting stack, a first electrical contact layer, an array of second electrical contacts, and an anti-reflection layer. The light emitting stack has a light emitting surface and a contact surface. The light emitting surface and the contact surface define opposing sides of the light emitting stack. The light emitting stack comprises a plurality of Group III-nitride layers including a first semiconducting layer provided towards the light emitting surface of the light emitting stack, a second semiconducting layer provided towards the contact surface, and an active layer arranged between the first semiconducting layer and the second semiconducting layer, the active layer configured to generate light having a first wavelength. The light emitting surface and the contact surface are parallel to each other and aligned with the plurality of Group III-nitride layers. The first electrical contact layer is provided on the light emitting stack and is configured to be in electrical contact with the first semiconducting layer. The array of second electrical contacts is provided on the contact surface of the light emitting stack. Each second electrical contact defines a light emitting device between the first semiconducting layer and the second electrical contact. Each of the second electrical contacts is spaced apart from the other second electrical contacts to form a two-dimensional array of light emitting devices. The anti-reflection layer is provided on the light emitting surface. The anti-reflection layer is configured to increase a light extraction efficiency of the light generated by the light emitting stack.

To provide a reflection member for forming a polygonal irradiated region. Solution: A reflection member for reflecting light emitted from a light source comprises: at least one polygonal cell, the at least one polygonal cell having: a center bottom part which has a polygonal shape in a plan view and in which the light source is disposed; and an inclined part which is inclined from the center bottom part toward the outer edge, wherein the inclined part has: vertex-part inclined surfaces which are provided so as to correspond to the respective vertexes of the polygonal shape; and side-part inclined surfaces which are each provided between the corresponding vertex-part inclined surfaces, and wherein an inclination angle α of at least a part of the vertex-part inclined surfaces is larger than an inclination angle β of the side-part inclined surfaces in a cross-sectional view.

A light engine includes a housing containing a rectangular aperture, a polarizer disposed in the housing facing the aperture, a light emitting diode (LED) array disposed in the housing, and a light guide configured to guide light emitted from the LED array toward the aperture, such that light is emitted through the aperture.

The present invention relates to an optical element (1), an optical module and a vehicle. The optical element (1) comprises: a light incident section (10) for receiving light directly from a light source; a light exit section (30) having a focal plane (P); and a third section (20) that directs light from the light incident section (10) toward the light exit section (30) in a predetermined manner to generate a predetermined low beam distribution or high beam distribution, where the optical element (1) is implemented integrally.

A light-emitting device assembly includes an emitter array of light-emitting elements, a transparent substrate, a structured lens, and an angular filter. The emitter array emits from its emission surface output light that is transmitted through the substrate, and enables selective activation of and emission from individual elements or subsets of elements of the array. The structured lens is formed on or in the substrate, and comprises micro- or nano-structured elements resulting in an effective focal length less than an effective distance between the structured lens and the emission surface. The angular filter is positioned on or in the substrate or on the emission surface and exhibits decreasing transmission or a cutoff angle with increasing angle of incidence.

The invention relates to a backlighting device (14), particularly for head-up display. Said device includes: at least one light-emitting diode (16), emitting light beams; an optical system (20) for shaping light beams; and a light diffuser (22), receiving the shaped light beams and said diffuser also comprises a heat sink (18) formed of at least two parts including a base plate (50) and at least one strip (52) that is attached onto said base plate. The strip comprises at least one fold (90) for forming at least one cooling fin (80) and at least one area (60) intended for thermal contact with said base plate (50).

A primary optic for a light-emitting diode or device (LED) includes a tilted wedge atop a truncated compound parabolic concentrator (CPC). The CPC includes an input face and a lower exterior surface defined by a tilted parabolic segment rotated about an axis. The bottom end of the lower exterior surface joins the perimeter of the input face. The tilted wedge includes an upper exterior surface above the lower exterior surface, and an interior conical surface surrounded by the lower and the upper exterior surfaces. The upper exterior surface is defined by a tilted straight line rotated about the axis. The interior conical surface is defined by a smooth curve rotated about the axis. The interior conical surface has a vertex located at the axis and within the lower exterior surface. The top ends of the interior conical surface and the upper exterior surface join to define an output aperture.

A screen cover includes a screen cover body including an array of cover units arranged in multiple rows and multiple columns, each cover unit configured to be positioned over a respective LED lamp of an array of LED pixel units. Each cover unit has a shaped outer surface with edges, including an edge in common with an adjacent cover unit in a same row and an edge in common with an adjacent cover unit in a same column, such that the outer surfaces of the cover units along the columns and rows together form a continuous outer cover surface.

A light emitting device includes a substrate, a plurality of light emitting elements arranged in three or more rows on the substrate, and a light-transmissive member including a cylindrical lens portion having an array of three or more cylindrical lenses arranged parallel to each other along the rows of the light emitting elements so that each of the cylindrical lenses is on one of the three or more rows of light emitting elements. The rows of the light emitting elements are arranged with substantially uniform intervals. The cylindrical lens portion includes first cylindrical lens portions including at least cylindrical lenses at outermost sides of the array, and a second cylindrical lens portion arranged at an inner side of the first cylindrical lens portions and having a height greatest in the cylindrical lens portion.

Provided is light flux controlling member for controlling a distribution of light emitted from a plurality of light emitting elements disposed on a substrate, which includes a plurality of incidence units for allowing incidence of the light emitted from the plurality of light emitting elements, respectively; and an emission unit which emits the light incident on the plurality of incidence units while guiding the light, and which is disposed between the plurality of incidence units in a direction along the substrate. The light flux controlling member has a rectangular shape with rounded corners in plan view, and includes four corner portions and four side portions, and the inclination angle of the corner portions is different from the inclination angle of the side portions.