Abstract: A ceramic discharge vessel for discharge lamps is provided, with a central main part which extends between the tips of two electrodes and which is essentially tubular and with two ends for fixing and sealing an electrode system, wherein the ceramic discharge vessel has a longitudinal axis and wherein the main part consists of two halves which are connected in the middle of the main part wherein the two halves are frustoconically shaped with a draft angle p of 0.5°?p?7.0°.

Abstract: An LED light system may include a primary LED radiation source, in particular at least one blue- or UV-emitting semiconductor element, wherein a first dome of transparent or translucent material, which acts as a conversion element, is placed in front of the primary light source in the emission direction, wherein at least a part of the surface of the first dome is divided into at least two regions of different types, which comprise luminescent materials, the at least two regions including different luminescent materials for the conversion.

Abstract: A converting element for converting emitted light from one or more light-emitting diodes is disclosed. The converting element may include a matrix material, and at least one phosphor, wherein the converting element further comprises a component, which is either a thermochromic dye or a phase change medium.

Abstract: A semiconductor component has a plurality of GaN-based layers, which are preferably used to generate radiation, produced in a fabrication process. In the process, the plurality of GaN-based layers are applied to a composite substrate that includes a substrate body and an interlayer. A coefficient of thermal expansion of the substrate body is similar to or preferably greater than the coefficient of thermal expansion of the GaN-based layers, and the GaN-based layers are deposited on the interlayer. The interlayer and the substrate body are preferably joined by a wafer bonding process.

Abstract: A reflector for a lighting device is provided. The reflector may include: a plurality of reflecting bodies each having a plurality of internal reflecting facets; wherein the plurality of reflecting bodies are arranged to rotate by different rotation angles around their respective rotation axes, so as to be capable of compensating unsmooth light distribution caused by the internal reflecting facets.

Abstract: A luminaire for illuminating a target area (34) by retroreflection from a reflector (30), comprising a light-emitting diode module (12) having at least one light-emitting diode; (14) and a cooling device (10) for the light-emitting diode module (12), the cooling device including as coolant a liquid (26) that is transparent to the light of the light-emitting diode module and a transparent coolant container (20) for accommodating the coolant; (26) wherein the coolant container (20) comprises a first (22) and a second transparent wall (24) between which the coolant (26) is located and which extend substantially perpendicularly to the optical axis (36) of the reflector (30) and have a surface such that in an assembled state in which the light-emitting diode module (12) and the cooling device (10) are connected to the reflector (30), at least 90% of the radiation of the light-emitting diode module (12) which is reflected from the reflector (30) and which reaches the target area (34) passes through the coolant cont

Abstract: A light source includes a primary radiation source, which emits radiation in the shortwave range of the optical spectral range, wherein this radiation is converted at least by means of a first luminescent substance entirely or partially into secondary longer-wave radiation in the visible spectral range, wherein the first luminescent substance originates from the class of nitridic modified orthosilicates (NOS), wherein the luminescent substance has as a component M predominantly the group EA=Sr, Ba, Ca, or Mg alone or in combination, wherein the activating dopant D is composed at least of Eu and replaces a proportion of M, and wherein a proportion of SiO2 is introduced in deficiency, so that a modified sub-stoichiometric orthosilicate is provided, wherein the orthosilicate is an orthosilicate stabilized with RE and N, where RE=rare earth metal.

Abstract: Various embodiments of the illumination unit include a surface light source, a primary optical element, a first reflector and a second reflector. The primary optical element is arranged at the surface light source in such a way that light emitted by the surface light source is imaged onto the first reflector by the primary optical element. The beam cross section of the light is reduced by the primary optical element at the same time. In this case, the first reflector images the light beam that has been reduced by means of the primary optical element onto the second reflector in order to emit the light from the second reflector from the illumination unit.

Abstract: A light source unit of a light engine is disclosed, wherein the light source unit includes a plurality of LED sub light source units each comprising at least one LED and an optical device corresponding to the at least one LED, the optical device is configured to modify a beam from each LED to be an approximately collimated beam.

Abstract: In various embodiments, a lighting device may include a plurality of semiconductor light sources, and an apparatus configured to operate the semiconductor light sources. The apparatus has switching means, by which the semiconductor light sources can be divided in groups for operation with the apparatus.

Abstract: An LED lighting assembly may include a printed circuit board with an LED chip, and a heat sink thermally conducted with the printed circuit board, wherein the LED lighting assembly further comprises a light guide body configured as a bulb, the light guide body having an end surface as a light incidence surface of light from the LED chip, an outer surface as a light emergent surface and an inner surface, wherein the inner surface is structured so as to form a reflecting surface, reflecting at least part of light from the end surface to the outer surface.

Abstract: A circuit board for an optoelectronic semiconductor chip includes an electrically conductive first metal foil, a first electrically insulating foil, an electrically conductive second metal foil, wherein the first electrically insulating foil is applied to the first metal foil at a top side of the first metal foil and mechanically connects thereto, the first electrically insulating foil has a recess in which the first metal foil is exposed, the recess electrically conductively fixes the optoelectronic semiconductor chip to the first metal foil within the recess, the second metal foil is applied at a top side of the first electrically insulating foil, the top side facing away from the first metal foil, and mechanically connects to the electrically insulating foil, the first electrically insulating foil is free of the second metal foil at least in the region of the recess, and the second metal foil electrically contacts the optoelectronic semiconductor chip.

Abstract: A bushing for a high-pressure discharge lamp, which is suitable for connecting an electrode in the interior of a ceramic discharge vessel to a supply lead in a gastight manner on the exterior of the discharge vessel, wherein the bushing is an electrically conductive ceramic composite consisting of a mixture of LaB6 and at least one second material from the group Al2O3, Dy2Al5O12, AlN, AlON and Dy2O3 is disclosed.

Abstract: A lighting module includes a ribbon-like containment body with a web wall having a first and a second face opposite to each other and a pair of side walls extending sidewise of the first face of the web wall to define a channel-like shape of the containment body, a ribbon-like mounting board for mounting light radiation sources, the mounting board being arranged in the channel-like shape of the containment body with a mounting surface facing away from the first face of the web wall of the containment body, and a light radiation source mounted on the mounting surface of the board for projecting light radiation from the channel-like shape of the containment body. The lighting module includes a pair of hook-like profiles protruding from and along the second face of the web wall of the containment body to permit mounting of the lighting module by hooking to a mounting element.

Abstract: A carrier device for an electrical component includes a carrier, which includes an electrically insulating layer, and an electrical contact layer on the electrically insulating layer The electrical contact layer includes at least one bridge-shaped contact region At least one recess in the electrically insulating layer is arranged at least on one side surface of the bridge-shaped contact region and/or the bridge-shaped contact region includes a bridge width reducing toward the insulating layer.

Abstract: A potting method for a lamp chain includes a) providing a mold having a potting groove; b) providing a fixing support which is fixedly kept in the potting groove; c) fixedly keeping a printed circuit board provided with a light emitting assembly in the fixed support; d) potting a potting material into the potting groove and curing the potting material; and e) removing the mold.

Abstract: An LED arrangement includes a first LED chain having first LEDs; a second LED chain having second LEDs; a circuit arrangement for coupling the first and second LED chains to a supply source; wherein the circuit arrangement is configured such that the first and second LED chains can be coupled to or decoupled from the supply source, wherein the first LED chain can be coupled to the supply source at first points in time and the second LED chain can be coupled to the supply source at second points in time; wherein the circuit arrangement is configured such that, in the case of a coupling of the LED arrangement to the supply source, a current having a first average current intensity through the first LED chain and a current having a second average current intensity through the second LED chain, wherein the LEDs are arranged depending on their current intensities.

Abstract: In various embodiments, a light emitting diode module may include a carrier plate, at least one light emitting diode, and at least one sensor configured to register light emitted by the light emitting diode. The light emitting diode is attached to a light emitting diode installation side of the carrier plate. The sensor is installed countersunk through a hole of the carrier plate in relation to the light emitting diode installation side thereof.

Abstract: A phosphor for low-pressure discharge lamps is disclosed, wherein the phosphor is present in the form of phosphor grains coated with a protective layer, wherein the protective layer consists of a metal oxide, a metal borate, a metal phosphate or mixtures thereof.

Abstract: A lighting device may include: a mount, which is populated with at least one electronic component and with at least one semiconductor light source, a cover for covering at least one electronic component and at least one connecting element for fastening the cover to the mount, wherein the connecting element is connected to the mount by means of a non-latching connection and to the cover by means of a latching connection.