Abstract: A light emitting device includes a vertical via through the P-type semiconductor layer and the active layer. Using a vertical via reduces quantum well damage, allows shortening of P-N spacing, and allows increased reflective area. A dielectric structure is formed in the via to provide a sloped wall that extends to an upper surface of the device. Another dielectric layer covers the upper surface and the sloped wall, and provides select contacts to the semiconductor layers. A metal layer is subsequently applied. Because the dielectric layers provide a continuous slope from the surface of the device, the metal layer does not include a vertical drop. Because the active layer does not extend into the via, the contact to the N-type semiconductor layer may be situated closer to the wall of the via, increasing the area available for a reflective layer.

Abstract: An incandescent lamp for a vehicle headlight comprising a transparent vessel that encloses at least one filament and the vessel is at least partly covered with a coating. The coating comprises at least one pigment, which is arranged such that light emitted by the at least one filament and traversing the coating is transformed to transformed light. The transformed light is characterized by a chromaticity according to the CIE 1931 xy-chromaticity with y being in between the Planckian locus and y=0.5*x+0.205 and 0.36<x<0.42, and wherein the at least one pigment comprises a mixture of Co—Al oxide and Co—Al—Cr oxide, the mixture being characterized by a ratio of a concentration in mass percentage Cm(Co—Al oxide) of Co—Al oxide and a concentration in mass percentage Cm(Co—Al—Cr oxide) of Co—Al—Cr oxide in the coating of 90/10?Cm(Co—Al oxide)/Cm(Co—Al—Cr oxide)?30/70.

Abstract: The invention describes a laser-based light source (100) which is adapted to use the angular dependence of the reflection of polarized laser light (10) at a surface of a conversion material to control especially the color point of light emitted by means of the laser-based light source (100). The reflected laser light is within a first wavelength range and the converted light is in a second wavelength range different from the first wavelength range such that the color point of the light emitted by means of the laser-based light source (100) in a defined solid angle depends on the ratio between reflected and converted light. The invention further describes a corresponding method of light emission control, a vehicle headlight (200) comprising such a laser-based light source (100) and a lighting system comprising such vehicle headlights (200).

Abstract: The present invention relates to a device for emitting light. In one embodiment, an LED has a nano-particle (e.g., quantum dot) coating layer over it for down-converting the light from the LED. The nano-particles are in a dispersion medium for dispersing the nano-particles. The dispersion medium is mixed with a weak acid or a salt thereof. The nano-particles may be coated with silica and the solution is pre-treated with a base or alkali-silanolate to increase the stability of the nano-particles in light conversion.

Abstract: A device includes an analog current division circuit configured to divide an input current into a first current and a second current, and a multiplexer array including a plurality of switches to provide the first current to a first of three colors of LEDs and the second current to a second of three colors of LEDs simultaneously during a first portion of a period, the first current to the second of three colors of LEDs and the second current to a third of three colors of LEDs simultaneously during a second portion of the period, and the first current to the first of three colors of LEDs and the second current to the third of three colors of LEDs simultaneously during a third portion of the period.

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 describes an LED lighting assembly comprising a reflector unit comprising a number of reflector regions; an LED carrier realized to support at least one LED arrangement; and at least one positioning feature for positioning the LED carrier relative to the reflector unit, wherein a positioning feature is arranged in the same plane as the optical center of the LED arrangement. The invention further describes a method of manufacturing such an LED lighting assembly.

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: The invention refers to a lighting device comprising at least one light emitting diode (LED). The object to provide a lighting device that is capable of providing a light pattern for illuminating an object in 3D imaging, wherein the lighting device is simple and cost-effective to manufacture, while the lighting device may in addition have a very small form factor, is solved in with a lighting device comprising: at least one LED for emitting light towards a light-emitting side; a first grating with a regular pitch having light-blocking sections and light-permeable sections; wherein the first grating is arranged on the light-emitting side to block the passage of light at the light-blocking sections, such that the light passing the light-permeable sections is capable to illuminate an object with a line pattern. The invention further corresponds to a method for producing a lighting device and the use of a lighting device.

Abstract: Light emitting die (300) comprising a plurality of light emitting elements (310A, 310B), each having a pair of bond pads (N1,P1 and N2,P2), wherein at least two diagonally opposite bond pads of adjacent light emitting elements on a die have their facing corners truncated (330) to enable a direct diagonal coupling of a complementary pair of diagonally opposite bond pads when the die is monted on a substrate on which an interconnection pattern is formed. By enabling diagonal as well as lateral coupling of the bond pads of multiple light emitting elements of a die, the multiple light emitting elements may be arranged in a variety of series and/or parallel configurations, thereby facilitating the use of the same die at different nominal operating voltages with a single interconnect layer on the substrate upon which the die is mounted.

Abstract: The present invention relates to the field of automotive lighting, and in particular to an automotive lighting system for a vehicle. The automotive lighting system for a vehicle comprises: a plurality of light sources; a plurality of primary optics, each being a reflector, arranged in a matrix and configured to receive and redirect light from the plurality of light sources; and a secondary optics configured to receive the redirected light from the plurality of primary optics and project the received light in front of the vehicle. Further, each light source is disposed in a focal plane of a corresponding one of the plurality of primary optics, and at least one of the plurality of primary optics is disposed in a focal plane of the secondary optics.

Abstract: An electrical coupling device for coupling functional elements of a lighting system comprises a first wire, a second wire, at least one spacer and at least one coupling spacer. The spacer is arranged to provide a first defined distance between the first and second wires at the position of the spacer. The coupling spacer is arranged to provide a second defined distance between the first and second wires at the position of the coupling spacer and to electrically couple the functional element to the electrical coupling device. Wherein the spacer and the coupling spacer are physically separated from each other, and the coupling spacer, the spacer, and the first and second wires are embedded in a flexible cover. The flexible cover enables flexibility in all three dimensions at a position between the spacer and the coupling spacer. Further a lighting system may comprise the electrical coupling device and functional element.

Abstract: A lighting strip comprises a flexible printed circuit strip. The flexible printed circuit strip comprises a plurality of wiring portions and a plurality of carrying portions. The plurality of wiring portions are configured to supply electrical power to the plurality of carrying portions. The lighting strip comprises a plurality of solid-state lighting elements respectively disposed on the plurality of carrying portions. The plurality of wiring portions include at least one pitch adjusting portion configured to adjust a pitch between two adjacent carrying portions and to enable the flexible printed circuit strip to be arranged in a three-dimensional shape.

Abstract: The invention describes a flexible lighting strip for use in a vehicle signaling light. The flexible lighting strip comprises a multitude of light-emitting diodes. The flexible lighting strip is arranged to be bended around at least two, more preferably three linear independent axes. Light-emitting diodes of at least a first group of the light-emitting diodes are inclined with respect to a longitudinal extension of the flexible lighting strip such that surface normals of light exit surfaces of the first group of the light-emitting diodes enclose a first angle of more than 0° with corresponding surface normals of a light emission surface of the flexible lighting strip. The invention further relates to a light assembly comprising such a flexible lighting strip. The invention finally relates to a vehicle signaling light comprising such a vehicle light assembly.

Abstract: An LED backlight system having a plurality of backlight segments including an integral light waveguide, each backlight segment supporting a sidelight emitting LED. A light guide can have a rectangular shape, a flat top surface, and a curved lower surface that defines a cavity having a top and sidewalls, with the sidelight emitting LED positioned in the cavity. The cavity sidewalls can include light in-coupling structures such as prisms. In one embodiment, each sidelight emitting LED can be rotated with respect to a rectangular cavity, with edges of the sidelight emitting LED facing corners of rectangular cavity. At least one of a reflective layer and a top out-coupling structure can be positioned between the top of the cavity and the sidelight emitting LED.

Abstract: An LED backlight system having a plurality of backlight segments including an integral light waveguide, each backlight segment supporting a sidelight emitting LED. A light guide having a rectangular shape, a flat top surface, and a curved lower surface defines a cavity having a top and sidewalls, with the sidelight emitting LED positioned in the cavity. At least one of a reflective layer and a top out-coupling structure can be positioned between the top of the cavity and the sidelight emitting LED.

Abstract: A laser lighting module for a vehicle headlight includes at least one laser, a scanning arrangement, a light conversion device, a safety mirror, a safety detector and a safety controller. The laser emits light in a first wavelength range and the scanning arrangement moves a beam of the light within a scanning solid angle so a spot of the light moves across the light conversion device. The light conversion device converts a fraction of the light to converted light in a different wavelength range than the first and emits a mixture of transmitted and converted light. The safety mirror is arranged within the scanning solid angle such that at least 90% of the transmitted light hits the safety mirror. The safety controller receives the control signal, generated by the safety detector from the safety detection light, and switches off the laser if the control signal exceeds a first threshold value.

Abstract: An LED backlight system having a plurality of backlight segments including an integral light waveguide, each backlight segment supporting a sidelight emitting LED. A light guide is included in each of the plurality of backlight segments and defines a cavity having a top and sidewalls, with the sidelight emitting LED positioned in the cavity. At least one of a reflective layer and a top out-coupling structure can be positioned between the top of the cavity and the sidelight emitting LED.

Abstract: Embodiments of the invention include a semiconductor light emitting device with a light emitting layer disposed between an n-type region and a p-type region. The light emitting layer emits first light. The device further includes AE1-xLi2Be4O6:Eux, wherein AE=one or more of Sr, Ba, Ca, disposed in the path of the first light. The AE1-xLi2Be4O6:Eux absorbs first light and emits second light. In some embodiments, the first light and second light may be blue.

Abstract: An incandescent lamp for a vehicle headlight comprising a transparent vessel that encloses at least one filament and the vessel is at least partly covered with a coating. The coating comprises at least one pigment, which is arranged such that light emitted by the at least one filament and traversing the coating is transformed to transformed light. The transformed light is characterized by a chromaticity according to the CIE 1931 xy-chromaticity with y being in between the Planckian locus and y=0.5*x+0.205 and 0.36<x<0.42, and wherein the at least one pigment comprises a mixture of Co—Al oxide and Co—Al—Cr oxide, the mixture being characterized by a ratio of a concentration in mass percentage Cm(Co—Al oxide) of Co—Al oxide and a concentration in mass percentage Cm(Co—Al—Cr oxide) of Co—Al—Cr oxide in the coating of 90/10?Cm(Co—Al oxide)/Cm(Co—Al—Cr oxide)?30/70.