Abstract: There is proposed a light source comprising: a semiconductor diode structure adapted to generate light; and an optical enhancement section above the semiconductor diode structure and adapted to output light from the semiconductor diode structure. A partially-reflective layer covers at least a portion of the top of the optical enhancement section and is adapted to reflect a portion of the output light towards the optical enhancement section. The partially-reflective layer has a light transmittance characteristic that varies laterally.

Abstract: The invention relates to an optical arrangement including LED lighting elements arranged on a support surface. An optical axis X extends from the support surface. A first collimator unit includes at least one support element and first collimator elements. The support element is supported on the support surface between at least two of the LED lighting elements. The first collimator elements are arranged in front of the LED lighting elements in the direction of the optical axis X to collimate light emitted from the LED lighting elements. A second collimator unit is arranged in front of the first collimator unit in the direction of the optical axis X. The second collimator unit includes second collimator elements arranged in front of the first collimator elements to collimate light emitted therefrom.

Abstract: A lighting device is provided comprising at least one light-emitting element comprising a light-emitting surface configured to emit light; and a light-guiding sheet at least partially covering the light-emitting surface and comprising at least one cavity forming a passage for light emitted from the light-emitting surface. Thereby, at least one lateral surface limiting the at least one cavity is configured to reflect light emitted from the light-emitting surface. Further, a size of an opening of the at least one cavity facing the light-emitting surface is smaller than an area of the light-emitting surface.

Abstract: A lighting device according to the invention comprises at least one semiconductor layer; at least one light emission surface comprising an array of high luminance areas configured to emit light at a first local luminance level and low luminance areas configured to emit no light or to emit light at a second local luminance level lower than the first local luminance level; a plurality of semiconductor light emitting devices formed in the semiconductor layer to define the plurality of high luminance areas; wherein the high luminance areas and the low luminance areas are arranged in accordance with a predefined light emission profile of the light emission surface.

Abstract: A lighting device contains light-emitting elements and has an elongated shape. The lighting device has a housing that has reflective side walls extending in a longitudinal direction of the housing; a cavity formed between the reflective side walls; and light-emitting elements arranged at least partially along the longitudinal direction relative to each other in the cavity. An opening of the cavity forms a light-emitting area, A width of the cavity expands from the light-emitting elements towards the opening at least in sections. A reflective element covers at least a section of the opening and reflects a part of light emitted from the light-emitting elements towards the cavity and reduces a width of the light-emitting area compared to a width of the opening.

Abstract: A dual CCT automotive headlight is described herein, comprising: at least one first LED configured to emit light of a first color; at least one second LED configured to emit light of a second color different from the first color; a light mixing device arranged to receive and mix light from the at least one first LED and the at least one second LED and to emit the mixed light. The dual CCT automotive headlight can not only provide homogeneous light of the first color and homogeneous light of the second color, but can also provide homogeneous light of a mixed color.

Abstract: A lighting device is provided comprising at least one light-emitting element comprising a light-emitting surface configured to emit light; and a light-guiding sheet at least partially covering the light-emitting surface and comprising at least one cavity forming a passage for light emitted from the light-emitting surface. Thereby, at least one lateral surface limiting the at least one cavity is configured to reflect light emitted from the light-emitting surface. Further, a size of an opening of the at least one cavity facing the light-emitting surface is smaller than an area of the light-emitting surface.

Abstract: The present disclosure relates to a lighting device comprising light-emitting elements such as light-emitting diodes arranged on a substrate. The object to provide a lighting device comprising multiple light-emitting elements and light guides, wherein the thermal sensitivity of the lighting device is reduced in a particularly simple manner, is solved in that the lighting device comprises: a lens with a light entry side and a light exit side; light guides, each light guide being arranged in optical contact to at least one of the light-emitting elements and being configured to guide light emitted by the at least one of the light-emitting elements towards the light entry side of the lens; and a transparent stabilizer element being arranged in mechanical contact to the light exit side of the lens, wherein the transparent stabilizer element is configured to define the shape of the light exit side of the lens at least in regions. The invention further refers to a method for producing a lighting device.

Abstract: The invention relates to a lighting arrangement, in particular a lighting arrangement which may be used in a headlamp of a vehicle. A beam shaping arrangement comprises a light input portion for receiving light emitted from a light source and a light output portion for emitting a shaped beam. The light output portion is spaced from the light input portion in a forward direction. In order to achieve a desired illumination beam pattern suited for a vehicle headlamp the beam shaping arrangement is disposed to divide light from the light input portion into at least a first and a second beam portion separated in height direction. The first and second beam portions are led to converge in the height direction towards the light output portion. At the light output portion, the second beam portion is directed at a peripheral portion arranged laterally further outward relative to the first beam portion.

Abstract: The invention describes an LED lighting unit comprising a container with a number of partially reflective side walls; a light exit opening defined by the side walls; and a number of light-emitting diodes arranged in the container to emit light of a first color through the light exit opening during an on-state of the lighting unit; characterized in that the material properties of the partially reflective container side walls are chosen to impart a second non-white color to the container side walls, and to absorb light in at least one specific region of the visible spectrum such that light of the non-white second color exits the lighting unit through the light exit opening during an off-state of the lighting unit. The invention further describes a method of manufacturing such an LED lighting unit.

Abstract: A lighting arrangement includes at least a first and a second LED lighting element arranged next to each other on a carrier surface. The spacer element has, at least in a portion thereof which is in contact with the second LED lighting element, a width which is less than 20% of a width of the first LED lighting element. The first LED lighting element comprises a spacer element projecting into a direction in parallel to the carrier surface. The second LED lighting element is arranged in contact with the spacer element such that it is arranged aligned relative to the first LED lighting element, and such that the first and second LED lighting elements are arranged at a distance forming a gap between the first and second LED lighting elements.

Abstract: A vehicle light assembly comprising: a flexible lighting strip with a multitude of light-emitting diodes that are bent around at least two linear independent axes; an optically passive lighting strip terminator that is coupled to an end surface of the flexible lighting strip and is arranged such that light emitted by the light emitting diodes is at least partly recycled; a light guiding structure comprising a light receiving surface that receives light emitted by the flexible lighting strip and the lighting strip terminator and surface defines a bending of the flexible lighting strip and a primary light emission surface that emits at least a part of the light received via the light receiving surface; a coupling structure that mechanically couples the flexible lighting strip and the lighting strip terminator to the light receiving surface. The vehicle light assembly can further be comprised in a front or rear vehicle light.

Abstract: The invention describes an LED lighting unit comprising a container with a number of partially reflective side walls; a light exit opening defined by the side walls; and a number of light-emitting diodes arranged in the container to emit light of a first color through the light exit opening during an on-state of the lighting unit; characterized in that the material properties of the partially reflective container side walls are chosen to impart a second non-white color to the container side walls, and to absorb light in at least one specific region of the visible spectrum such that light of the non-white second color exits the lighting unit through the light exit opening during an off-state of the lighting unit. The invention further describes a method of manufacturing such an LED lighting unit.

Abstract: A dual CCT automotive headlight is described herein, comprising: at least one first LED configured to emit light of a first color; at least one second LED configured to emit light of a second color different from the first color; a light mixing device arranged to receive and mix light from the at least one first LED and the at least one second LED and to emit the mixed light. The dual CCT automotive headlight can not only provide homogeneous light of the first color and homogeneous light of the second color, but can also provide homogeneous light of a mixed color.

Abstract: A lighting module comprises a heat sink with a body portion and a protrusion portion protruding from the body portion into a forward direction. An LED element is mounted on a mounting surface of the protrusion portion. The mounting surface is arranged facing partially backwards and forming an angle of 5-45° to the forward direction. An electrical plug connector is provided within the body portion's cavity and is electrically connected to the LED element. In the lighting system, a reflector assembly comprises a concave reflector with an inner reflector space. A lighting module is arranged such that its protrusion portion projects into the inner reflector space. Light emitted from the LED element is reflected by the reflector. The body portion is arranged outside of the reflector space. The lighting module may be replaced by separating the lighting module from the reflector assembly and providing a new lighting module.

Abstract: The invention relates to an optical arrangement including LED lighting elements arranged on a support surface. An optical axis X extends from the support surface. A first collimator unit includes at least one support element and first collimator elements. The support element is supported on the support surface between at least two of the LED lighting elements. The first collimator elements are arranged in front of the LED lighting elements in the direction of the optical axis X to collimate light emitted from the LED lighting elements. A second collimator unit is arranged in front of the first collimator unit in the direction of the optical axis X. The second collimator unit includes second collimator elements arranged in front of the first collimator elements to collimate light emitted therefrom.

Abstract: A lighting arrangement includes at least a first and a second LED lighting element arranged next to each other on a carrier surface. The spacer element has, at least in a portion thereof which is in contact with the second LED lighting element, a width which is less than 20% of a width of the first LED lighting element. The first LED lighting element comprises a spacer element projecting into a direction in parallel to the carrier surface. The second LED lighting element is arranged in contact with the spacer element such that it is arranged aligned relative to the first LED lighting element, and such that the first and second LED lighting elements are arranged at a distance forming a gap between the first and second LED lighting elements.

Abstract: A lighting arrangement and a method of forming an illumination beam are described. A plurality of LED lighting elements is operable to emit light. A plurality of collimator elements is arranged to collimate light emitted from the LED lighting elements. A first projection element is arranged to project light emitted from the collimator elements onto a spatially controllable reflector element. The spatially controllable element comprises a plurality of reflector elements adjustable between a first and a second position. In the first position, the light is reflected into the direction of a second projection element to form a projected illumination beam. In the second position, light is reflected into a different direction to not contribute to the projected illumination beam.

Abstract: A lighting system and a method of operating a lighting module are described. The lighting module includes a heat sink a first LED element mounted on the heat sink emits light as a low beam pattern. A second LED element mounted on the heat sink emits light as a high beam pattern. A driver circuit electrically connected to the first and second LED elements to selectively supply electrical power for operation. The driver circuit is disposed to operate in a first and a second mode. In the first mode, to provide a low beam illumination, the first LED element is operated in a high power state while the second LED element is turned off. In the second mode, to provide a high beam illumination, the second LED element is operated in a high power state, while the first LED element is operated in a dimmed state.

Abstract: A lighting module comprises a heat sink with a body portion and a protrusion portion protruding from the body portion into a forward direction. An LED element is mounted on a mounting surface of the protrusion portion. The mounting surface is arranged facing partially backwards and forming an angle of 5-45° to the forward direction. An electrical plug connector is provided within the body portion's cavity and is electrically connected to the LED element. In the lighting system, a reflector assembly comprises a concave reflector with an inner reflector space. A lighting module is arranged such that its protrusion portion projects into the inner reflector space. Light emitted from the LED element is reflected by the reflector. The body portion is arranged outside of the reflector space. The lighting module may be replaced by separating the lighting module from the reflector assembly and providing a new lighting module.