Abstract: Various embodiments relate to an irradiation device including a pump radiation source for emitting pump radiation, a conversion element for converting the pump radiation into conversion radiation of longer wavelength, and a reflection surface, which is reflective to the conversion radiation and on which backscattered conversion radiation emitted at a backscatter emission surface and thus counter to a useful direction is incident and is reflected therefrom back to the conversion element; said reflection surface is concavely curved relative to the conversion element in such a way that at least the backscattered conversion radiation emitted divergently from a surface centroid of the backscatter emission surface is incident on the reflection surface at an angle of incidence of at most 20° in terms of absolute value.

Abstract: An overvoltage protection apparatus may include a first connection for coupling to an N line, and at least one voltage-limiting element which is designed to block the current through the voltage-limiting element up to a predefinable threshold value of the voltage dropped across the voltage-limiting element and to conduct the current above this threshold value. The overvoltage protection apparatus may further include a second connection for coupling to a metal housing of an electrical apparatus, at least one capacitor, and at least one first non-reactive resistor. The at least one capacitor, the at least one first non-reactive resistor and the at least one voltage-limiting element are connected in series between the first connection and the second connection.

Abstract: A headlight module comprising separate phosphors which can be excited by electromagnetic radiation to emit light, and at least one radiation source for exciting the phosphors. Each phosphor is associated with an optical device, so that light emitted by the optical devices is merged into an overall image. Beam splitter devices and beam directing devices are disposed such that electromagnetic radiation emitted by the at least one radiation source is directed on the phosphors. A control device is provided for controlling operation of the at least one radiation source and the beam directing devices.

Abstract: A lighting may include at least one semiconductor light source which emits primary light, at least one phosphor region spaced apart from the at least one semiconductor light source and serving for at least partly converting the primary light into secondary light, and at least one filter disposed downstream of the at least one phosphor region, wherein the at least one filter is partly reflective at least to the primary light.

Abstract: A lighting device comprising a pump laser matrix (2) and a phosphor arrangement. The pump laser matrix (2) is configured to emit pump radiation (7) having a controllable pump radiation power distribution for the irradiation of the phosphor arrangement (4). The phosphor arrangement (4) comprises at least two different phosphors (R, Y, G) which can be irradiated with the pump radiation (7) and re-emit said pump radiation in a manner such that it is at least partly and in each case differently wavelength-converted. The lighting device (1) is configured to generate, with the aid of the pump laser matrix (2), a controllable distribution of the surface power density of the pump radiation on the phosphors (R, Y, G) of the phosphor arrangement (4).

Abstract: A lighting device may include a channel-shaped elongated profiled body including a light permeable material and having a mouth portion, and a light radiation source assembly arranged at the mouth portion and including a support board having one or more electrically powered light radiation sources, e.g. LED light radiation sources, thereon facing profiled body. Mouth portion of profiled body includes shoulder formations arranged sidewise of said mouth portion, with support board abutting against said shoulder formations.

Abstract: A lighting device, such as for example a LED flexible module, includes an elongated profiled body having a mouth portion, a first and a second lateral sides arranged sidewise of the mouth portion and a web side opposed the mouth portion. The profiled body includes a light-permeable portion, extending between the mouth portion and the first lateral side, and a light-impermeable portion extending between the second lateral side and the web side. A light radiation source assembly including a support member with one or more electrically powered light radiation sources is arranged at the mouth portion with the light radiation source(s) facing the light-permeable portion, whereby light radiation is directed towards the first lateral side for emission from the lighting device.

Abstract: Various embodiments relates to a DLP (digital light processing) projector for projecting at least one image on a projection surface. A discharge lamp is driven by a current waveform having at least one first region, to which a first frequency is assigned, and a second region, to which a second frequency is assigned, wherein the first region is established by a first commutation and a following second commutation, wherein the second region is established by the region between the second commutation and a following first commutation, wherein further commutations can occur within the second region, wherein a modulation factor is defined by the ratio of second frequency to first frequency, wherein the modulation factor is at least 3. A method for projecting at least one image is also 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 conversion element, a component and a method for producing the component are disclosed. In an embodiment the conversion element includes a phosphor configured to convert electromagnetic primary radiation into electromagnetic secondary radiation and a glass composition as matrix material in which the phosphor is embedded. The glass composition has the following chemical composition: at least one tellurium oxide with a proportion of 65 mole % as a minimum and 90 mole % as a maximum, R1O with a proportion of between 0 mole % and 20 mole %, at least one M12O with a proportion of between 5 mole % and 25 mole %, at least one R22O3 with a proportion of between 1 mole % and 3 mole %, M2O2 with a proportion of between 0 mole % and 2 mole %, and R32O5 with a proportion of between 0 mole % and 6 mole %.

Abstract: A light-emitting device having a cover (1), a heat sink (2) and a light-emitting assembly (3), wherein the heat sink (2) has at least one first locking part (a), the cover (1) has at least one second locking part (b) corresponding to the first locking part (a), the second locking part (b) engages with the first locking part (a) to form an enclosed cavity (5) for the light-emitting assembly (3), and the second locking part (b) has a pressing part (b1) pressing the light-emitting assembly (3) against the heat sink (2).

Abstract: A circuit arrangement for operating light sources includes input terminals for a power supply system voltage, a first rectifying circuit, a boost converter having output terminals, a half-bridge arrangement having two switches, which is connected to the output terminals of the boost converter, an inductance, the first terminal of which is coupled to the centre point of the half-bridge, and a second rectifying circuit, the first input terminal of which is coupled to the second terminal of the inductance and the second input of which is coupled to one of the output terminals of the boost converter. The output terminals of the second rectifying circuit are coupled to the inputs of a current-compensated inductor. At least one light source is connected to the output terminals of the current-compensated inductor, and the output terminals of the current-compensated inductor are coupled to an output terminal of the boost converter via filter capacitors.

Abstract: A light-emitting device may include a substrate, a light source arranged on the substrate, and a cover part spaced a certain distance apart from the light source and transmitting light emitted from the light source to outside. The cover part includes a first part, converting wavelengths of a part of light in light emitted from the light source and having different thicknesses at least in two different light-emitting directions of the light source, and a second part, having different thicknesses in the two different light-emitting directions to compensate the thicknesses of the first part.

Abstract: A circuit arrangement includes a converter having a converter switch and a driver for the converter switch. The driver includes an interface coupling to a dimming apparatus supplying a dimming value. The driver provides an RF signal with a duty ratio at the output of the driver. The driver modifies the RF signal by superposition of a PWM signal such that, in correlation with the supplied dimming value, a predefinable number of periods of the RF signal is chopped from the RF signal. The driver is configured to reduce the duty ratio of the RF signal during at least one predefinable period of the RF signal in order to adjust levels of dimming which correspond to dimming values which are between a first and a second dimming value which differ from one another by at least one period of the RF signal.

Abstract: In various embodiments, a lighting device may include at least one heat sink and a base configured to accommodate at least one light source and at least one device connected to the lighting device configured to generate a cooling media flow, wherein the cooling media flow runs predominantly parallel to the plane of the base of the heat sink.

Abstract: A lighting device may include a pump laser row and a phosphor arrangement. The pump laser row is designed for the purpose of emitting pump laser radiation for the irradiation of the phosphor arrangement. The phosphor arrangement has at least two different phosphors, which can be irradiated with the pump laser radiation and emit the pump laser radiation again at least partially and converted in wavelength differently in each case, and a movable mirror, which is designed for the purpose of reflecting the pump laser radiation of the pump laser row in a targeted manner on the phosphors in dependence on its position.

Abstract: A lighting device comprising a phosphor wheel configured such that it temporarily sequentially not only emits the excitation light in a wavelength-converted fashion as conversion light but additionally reflects said excitation light in an unconverted fashion as reflection light. Conversion light and reflection light are guided spatially separately on a conversion light path and reflection light path, respectively, with the aid of a first dichroic mirror and are finally combined with the aid of a second dichroic mirror. In this way, it is possible to combine the reflection light for example as a blue light channel with the conversion light.

Abstract: Various embodiments may relate to a lens for an illumination device, including an incident surface, an emergent surface, and a reflective surface connected between the incident surface and the emergent surface. The lens includes a first axis as an optical axis of the lens, a second axis perpendicular to the first axis and extending in a longitudinal direction of the lens, the first axis and the second axis defining a symmetrical surface of the lens, and a third axis perpendicular to the symmetrical surface, a first portion of light from a light source is incident upon the incident surface, refracted by the emergent surface, and then emerges to form a first light beam, and a second portion of light from the light source is incident upon the incident surface, reflected by the reflective surface, refracted by the emergent surface, and then emerges to form a second light beam.

Abstract: A semiconductor incandescent lamp retrofit lamp may include: at least one semiconductor light source, at least one light scattering body, and at least one optical waveguide, into which light of the at least one semiconductor light source can be coupled, wherein the at least one light scattering body is configured and arranged for the purpose of diffusely emitting light supplied thereto from the at least one semiconductor light source by way of the at least one optical waveguide.

Abstract: A light module comprises first excitation radiation source emitting first excitation radiation having a first optical property value, second excitation radiation source emitting second excitation radiation having a second optical property value which differs from the first value. At irradiation region (P), a phosphor and an optical element, which is at least partly reflective with maintenance of the optical property, are arranged alternately or simultaneously. A first dichroic mirror is arranged between the first excitation radiation source and irradiation region (P), and a second dichroic mirror is arranged between the second excitation radiation source and irradiation region (P). The first optical path proceeding from the first excitation radiation source successively comprises the first dichroic mirror, irradiation region (P) and the second dichroic mirror.