Abstract: A lighting assembly, comprising: a casing having a bowl-like structure with a bottom wall defining a window opening; a radiation source board with a light radiation source situated opposite said opening so as direct said light radiation outside of the casing; and a driving circuit board for said radiation source, said boards being stacked together without air gaps in between, with said circuit board directed towards said casing.

Abstract: A support structure for lighting devices, the support structure includes a ribbon-like support member with electrically conductive lines with mounting locations for electrically powered light radiation sources. The structure includes a sequence of adjacent units having opposed end regions and is severable between mutually facing end regions of adjacent units in the sequence. The units include, at the end regions, at least one electrical connection formation. The electrical connection formation includes a proximal portion electrically coupled to the electrically conductive lines of the respective unit, and a distal portion electrically insulated from the proximal portion. The distal portion is electrically coupled to the distal portion of an electrical connection formation provided in an adjacent unit to the respective unit in the sequence of adjacent units and is separable therefrom by severing the support structure.

Abstract: A circuit arrangement for operating at least a first and a second cascade of LEDs is provided including an input having a first and a second input connection for coupling to a rectified AC supply voltage, a voltage equalization series impedance, and at least a higher and a lower LED units which include cascades. The connection of the LED cascade that is not coupled to a first diode is a second node, and the second node of the lowest LED unit is coupled to a voltage equalization series impedance such that the impedance is coupled in series between the second node and the second input connection. In not-the-lowest LED unit, a fourth node is at any rate a node of the circuit arrangement that is at a lower potential, at least during a prescribable period during the circuit arrangement operation, than the second node.

Abstract: A lighting device includes a laminar support member bendable at bending lines extending in a common direction, the bending lines partitioning the laminar support member in a plurality of stripes. The plurality of stripes includes at least one first stripe with electrically-powered light radiation sources therealong and at least one second stripe free from light radiation sources forming a side wing for the at least one first stripe.

Abstract: A projection device for projecting at least one image onto a projection surface is provided. According to the present disclosure, a control device of the projection device is designed, on the basis of an evaluation of at least one measured value of a measuring device of the projection device determined during a drive of a discharge lamp of the projection device with a current waveform to be checked, to check the current waveform in respect of its suitability for minimizing an electrode burn-back of a first electrode and a second electrode, and in the case of a positive check result, to retain the checked current waveform, and in the case of a negative check result, depending on a checked commutation vector characterizing the checked current waveform, to create, by means of a specifiable algorithm, a modified commutation vector that characterizes a modified current waveform.

Abstract: A tracking system provides light source(s), a mobile communication unit and light sensor(s) with cameras, and a central control unit at least coupled to the sensor(s). The communication unit receives with its camera an identification information item broadcast by the light source(s) and broadcasts an activation signal, including data correlated with the received item, to the control unit. The control unit determines, based on the signal, at which position the communication unit is arranged and which sensor(s) is arranged relative to the position of the communication unit so that the communication unit can be detected by the camera of the sensor; activates the camera of the detected sensor(s) for providing image information by its camera to the control unit, to determine and identify a carrier of the communication unit at the determined position; and activates sensor(s) coupled to the control unit for tracking the identified carrier of the communication unit.

Abstract: In various embodiments, a lighting device is provided. The lighting device includes a channel-shaped elongate profiled body having a central or web portion and two side portions sidewise of the web portion, a profiled body having mutually opposed undercuts opening inwardly of the channel shape of profiled body, and a light radiation source assembly including an elongate support board carrying one or more light radiation sources, e.g. LED sources, the support board having longitudinal sides extending into the said undercuts, wherein the light radiation source assembly is retained by the channel-shaped profiled body.

Abstract: A DC gas discharge lamp includes an anode and a cathode having a first cathode segment, which forms the surface of the cathode at least in a region of the cathode which faces the anode and has an arc attachment region, within which an arc burning between the cathode and the anode attaches during lamp operation as intended. The first cathode segment consists of tungsten with at least one emitter material for reducing the work function of electrons from the cathode. The cathode is embodied in a manner free of thorium. The at least one emitter material has a melting point of less than 3200 K. At least one part of the surface of the cathode outside the arc attachment region is formed by a diffusion barrier for the at least one emitter material.

Abstract: An optical element is provided for beam shaping for radiation emitted by a radiation-emitting semiconductor chip. The optical element includes a radiation entrance face and a boundary surface different from the radiation entrance face with a first region and a second region. The first and second regions are arranged and embodied such that a first radiation portion of radiation entering the optical element through the radiation entrance face is reflected in the first region and after reflection in the first region is deflected in the second region towards a plane defined by the radiation entrance face.

Abstract: In various embodiments, a light-emitting apparatus is provided. The light-emitting apparatus includes at least one semiconductor light source configured to emit at least one primary light beam, a deflection device configured to deflect the at least one primary light beam onto respectively associated different positions on a phosphor body, at least one light detector configured to detect light that was emitted by the phosphor body, and an evaluation device. The evaluation device is configured to identify damage to the phosphor body on the basis of at least one measurement signal generated by the at least one light detector, and to correlate the at least one measurement signal with at least one position on the phosphor body.

Abstract: The light source module may include a plurality of light-emitting units, at least two optical units, and at least two light conversion units. Light from a first light-emitting unit exits as first exiting light processed by a first and second optical units, light from a second light-emitting unit forms first converted light processed by the first optical unit and converted by a first light conversion unit, light from a third light-emitting unit forms second converted light processed by the second optical unit and converted by a second light conversion unit. The second converted light exits as second exiting light processed by the second and first optical unit, and the first converted light serves as third exiting light processed by the first optical unit and is combined with the first and second exiting lights to form a first beam having a first, second, and third wavelength.

Abstract: A conversion element for the wavelength conversion of electromagnetic radiation from a first wavelength range to electromagnetic radiation from a second wavelength range, which includes longer wavelengths than the first wavelength range, the conversion element includes: a matrix material, the optical refractive index of which is temperature-dependent, and at least two different types of luminophore particles wherein a multiplicity of luminophore particles of each of the types are distributed in the matrix material, luminophore particles of different types differ from one another in terms of average particle size and/or material, the conversion element, upon excitation by electromagnetic radiation from the first wavelength range emits mixed radiation including electromagnetic radiation from the first and the second wavelength range, and the correlated color temperature and/or the color locus of the mixed radiation remain(s) substantially the same when the matrix material is at a temperature of between 25° C.

Abstract: A lighting device may include a strip-like carrier with a first and a second opposed faces with light radiation sources on the first face, and a strip-like profiled member having a pi-shaped cross section, including a channel-like central portion with a bottom wall and side walls. The strip-like carrier is arranged in the profiled member with the first face and the light radiation sources facing outwardly of the central portion and the second face facing the bottom wall of central portion. The pi-shaped profiled member includes two sidewise extensions laterally to the central portion, to provide lateral fixing formations for the lighting device.

Abstract: Various embodiments may relate to a lighting device, including at least one primary light source for generating primary light, a phosphor volume spaced apart from the at least one primary light source and serving for at least partly converting the primary light into secondary light having a different wavelength, at least one light sensor for detecting light generated by the at least one primary light source, and an evaluation unit for determining a case of damage of the phosphor volume on the basis of sensor data of at least one light sensor. The lighting device includes at least one additional light source for irradiating the phosphor volume, and is designed to operate the at least one additional light source, the at least one light sensor and the evaluation unit with the primary light source switched off.

Abstract: An illumination device includes multiple semiconductor primary light sources for emitting respective primary light beams, at least one movable mirror, which can be illuminated by means of the primary light beams, and which can assume at least two angle positions, and a luminophore element, which can be illuminated by means of primary light beams deflected by the at least one mirror. Light spots of the individual primary light beams are locally differentiable on the at least one luminophore element, an overall light spot composed of the light spots of the individual primary light beams is locally differentiable on the at least one luminophore element depending on the angle position of the at least one movable mirror, and at least one beam property of at least one primary light beam incident on the at least one luminophore element is variable during operation of the illumination device.

Abstract: A lighting device comprising a phosphor arrangement (2) having a phosphor region (31-33), a first laser (5) for irradiating a part of the phosphor region (31-33) with a first laser radiation. The phosphor region (31-33) has at least one phosphor which can be irradiated by the first laser radiation and re-emits the first laser radiation at least partly in a manner wavelength-converted into colored light having a first light color. A second laser (6) is configured for emitting a second laser radiation having a second light color. The second light color of the second laser radiation is identical in color to the first light color of the wavelength-converted colored light. The lighting device is configured to simultaneously emit the second laser radiation and the wavelength-converted colored light of identical color emitted by the phosphor.

Abstract: A light module includes an excitation radiation source designed to emit an excitation radiation having a polarization, at least one first phosphor, an output, at which an output signal is providable, at least one first polarization beam splitter, a first polarization modulator arranged serially between the radiation source and the first splitter. The first modulator is designed to modify the polarization of the radiation source depending on a control signal. The first splitter is designed to split the radiation incident on it depending on the polarization between a first and a second of two optical partial paths connected in parallel with one another. The first optical partial path includes the at least one first phosphor and ends at the output of the light module. The second optical partial path, whilst bypassing the at least one first phosphor, ends at the output of the light module.

Abstract: A housing of an electronic module may include: a mounting surface located at one side of the housing, wherein the mounting surface includes at least three sub-mounting surfaces, lines connecting the centers of respective sub-mounting surfaces form a polygon, and a mounting hole extending from one side of the housing to the other side thereof and being opened within an area of the polygon.

Abstract: A lighting device includes an elongated profiled body with a web wall having first and second opposing faces, and two side walls to the side of the web wall, the latter having longitudinal slots extending therealong. In the profiled body, there may be provided an elongated light radiation source module including a support board with electrically conductive formations facing said longitudinal slots and at least one electrically-powered light radiation source which is in electrical contact with said electrically conductive formations. The light radiation source module is locatable in elongated profiled body extending between both side walls, with support board facing towards the first face of web wall. An electrical contact slider member slidable along the second face of web wall is provided with electrical contact pins adapted to extend into said longitudinal slots. Slider member is displaceable towards support board with pins contacting said electrically conductive formations of support board.

Abstract: The lighting system includes a voltage source for generating a constant direct current adapted to supply lighting modules, a number n of electronic switches, a current sensor connected in series with the voltage source to detect a measurement signal indicative of the current provided by the voltage source, and a control unit. The control unit generates the drive signals for the electronic switches. It varies the drive signals, such that: in a first instant, all lighting modules are connected to the voltage source; and during a sequence of instants, each time a different set of lighting modules is connected to the voltage source. It then determines the current flowing through all lighting modules as a function of the measurement signal detected in the first instant, and determines the currents which flow through the various lighting modules as a function of the measurement signals detected during the sequence of instants.