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| Number | Title | Issue Date |
| 7994727 | LED driving arrangement A circuit for driving LEDs includes: —a transformer with a secondary winding for driving the LEDs and a primary winding, —a half-bridge arrangement fed with an input voltage and coupled to the transformer, —a resonant circuit between the half-bridge arrangemen... | 08/09/2011 |
| 7982403 | Multifunctional motor vehicle headlight module, in particular for the front region of a motor vehicle A motor vehicle headlight module having at least two lighting units (1) is specified. Here, each lighting unit (1) comprises at least one light-emitting diode chip (2). Different lighting units (1) are provided here for different lighting... | 07/19/2011 |
| 7977884 | High-pressure discharge lamp having cooling laminates fitted at the end of the discharge vessel Laminates, which are used for cooling the discharge vessel, are fitted to the seals of the ceramic discharge vessel. They are an integral part of the seal. ... | 07/12/2011 |
| 7977854 | Component for an electric lamp with outer bulb An assembly for an electric lamp with an elongated inner bulb, which is sealed at two ends, the inner bulb including a lamp axis, and a light-emitter being accommodated in the inner bulb, the inner bulb being surrounded by an outer bulb, wherein the outer bulb is su... | 07/12/2011 |
| 7976798 | Method for recovery of rare earths from fluorescent lamps Method for recovery of rare earths from fluorescent lamps. The method comprises six steps. •The individual process steps are: Mechanical separation of coarse components. •Separation of the halophosphate. •Extraction in acids of easily soluble rare-earth fluore... | 07/12/2011 |
| D641098 | LED luminaire | 07/05/2011 |
| 7967472 | Light unit The light unit comprises a light source and a reflector. The light source is surrounded by an exterior pipe. Spring clips with a centering effect for the exterior bulb of the light source are anchored at the open end of the exterior pipe. ... | 06/28/2011 |
| D640822 | LED luminaire | 06/28/2011 |
| 7965527 | Temperature protection device for electronic converters and related method A device for protecting an electronic converter, e.g. for halogen lamps, includes a comparator having an output as well as non-inverting and inverting inputs for receiving a first input signal indicative of the load applied to the converter and a second input signal... | 06/21/2011 |
| 7948182 | Low-pressure gas discharge lamp with a reduced argon proportion in the gas filling The invention relates to novel gas fillings of low-pressure gas discharge lamps for reducing the starting and arc drop voltages at low Hg vapor pressures. In favor of a mixture consisting of Ne and Kr, the Ar portion of the gas filling is considerably reduced. ... | 05/24/2011 |
| 7927165 | Process and apparatus for manufacturing a container for accommodating an HG source for a discharge lamp A manufacturing process and apparatus used to produce a container which is capable of accommodate an Hg source for a discharge lamp. The manufacturing includes producing a helical cutout in a coil former, inserting a flexible strip-like wire fabric into the helical ... | 04/19/2011 |
| 7911154 | Electronic ballast with phase dimmer detection The invention relates to an electronic ballast comprising a converter which is used to operate a discharge lamp, for example, a low pressure discharge lamp, for selectively operating, in a direct manner, the supply network or a phase section dimmer. Jumps in the sup... | 03/22/2011 |
| 7911148 | Circuit arrangement for operating a discharge lamp having temperature compensation The invention relates to a circuit arrangement which is used to operate a low pressure discharge lamp (EL), wherein the discharge lamp receives power. Said circuit arrangement is embodied in such a manner that power-determination components (C2a, L2... | 03/22/2011 |
| 7911122 | Lamp base with a cutout and lamp with corresponding lamp base The invention relates to a lamp base with a plastic base part which has electrical connections for the power supply of at least one lighting device of the lamp, the lighting device being enclosed by a lamp vessel and the electrical connections being configured by me... | 03/22/2011 |
| 7911121 | Incandescent lamp having an illuminant that contains a high-temperature resistant metal compound The invention relates to an incandescent lamp (1) which is provided with an illuminant (7) which is inserted in a bulb (2) together with a filling in a vacuum-tight manner, the illuminant (7) comprising a metal carbide that has a melting ... | 03/22/2011 |
| D634455 | Compact fluorescent lamp | 03/15/2011 |
| 7902768 | Driving arrangement for feeding a current with a plurality of LED cells A driving arrangement for feeding a current generated by a high frequency generator (10) coupled with a magnetic element (11) to a plurality of LED cells (33) each including at least one LED. The arrangement includes a respective plurality of LE... | 03/08/2011 |
| 7898190 | Method for setting an electronic ballast Method for setting an electronic ballast, with which an electric lamp is operated which comprises programming first settings of at least one operational parameter of at least one first lamp type into the electronic ballast, setting and operating an electric lamp, wh... | 03/01/2011 |
| 7884554 | Ignition circuit for igniting a discharge lamp and method for igniting the discharge lamp A starting circuit arrangement for starting at least one discharge lamp by applying an electrical starting voltage pulse to the discharge lamp, the starting circuit arrangement has: at least one source circuit arrangement for providing an electrical primary voltage ... | 02/08/2011 |
| 7880399 | Ballast for at least one fluorescent high pressure discharge lamp, method for operating said lamp and lighting system comprising said lamp The invention relates to a ballast for a high-pressure discharge lamp, in particular for a motor vehicle headlight lamp or a projection lamp, which ballast is, according to the invention, in the form of a Class E converter. ... | 02/01/2011 |
| D632005 | Eyeball element for a lamp | 02/01/2011 |
| 7876052 | Gas discharge lamp comprising a helicoid discharge tube and an inner tube piece The invention relates to a novel compact fluorescent lamp with a helical discharge tube 2 and a tube piece 8 which is fitted to it and can serve to accommodate an Hg source 14 and also as an exhaust tube, and to a corresponding production proces... | 01/25/2011 |
| 7876032 | Light unit provided with reflector The invention relates to a light unit, comprising a concave reflector (7) with an outlet opening and an axis, whereby the reflector encloses a light source running in the direction of the axis. The light source is enclosed at a separation from an open-ended c... | 01/25/2011 |
| 7863830 | Electronic ballast and method for operating an electric lamp The invention relates to an electronic ballast device for operating an electric lamp (2), comprising a first (21) and a second lamp filament (22), wherein the lamp filaments (21, 22) are electrically connected to a heating circuit (3 | 01/04/2011 |
| 7863819 | Metal halide lamp with adhesive layer sealing molybdenum/vandium alloy leadthrough The invention relates to a metal halide lamp comprising a ceramic discharge vessel (10), characterized in that an MoV leadthrough is connected to a PCA element (Al2O3) by means of a specific adhesive layer containing Al and Mo. ... | 01/04/2011 |
| 7862205 | Lighting unit and lamp A lighting unit has at least two submounts, wherein each submount has multiple light sources. Furthermore, a lamp may have such a lighting unit. ... | 01/04/2011 |
| 7862200 | Lamp arrangement A lamp arrangement is disclosed, with at least one low-pressure discharge lamp, in particular, a compact fluorescent lamp to generate a main illumination with at least one discharge bulb, fitted in a socket and at least one alternative light source, in particular, a... | 01/04/2011 |
| 7859192 | Method for operating high-pressure lamps without hotstarting and luminaire having two high-pressure discharge lamps High-pressure discharge lamps can only be restarted in the hot state at a very high starting voltage. In order to avoid hotstarting, a method for operating high-pressure discharge lamps without hotstarting comprises two high-pressure discharge lamps (12a | 12/28/2010 |
| 7852012 | Circuit apparatus with a high-side buck transistor A cost-effective driver circuit for an LED background lighting unit includes a buck circuit with an upper transistor is driven via two further transistors. The first transistor is connected with its reference electrode to the positive terminal of a DC voltage source... | 12/14/2010 |
| 7839093 | Circuit arrangement with continuously oscillating modulated operating frequency, and method, for the operation of high-pressure gas discharge lamps Disclosed is a circuit arrangement for supplying a lamp wattage to a high-pressure discharge lamp (Lp) in the form of an alternating current having an operating frequency. The alternating current is generated by a full bridge that is composed of two half-bridge bran... | 11/23/2010 |
| 7830094 | Driver arrangement for LED lamps A driver arrangement for LED light sources includes a transformer having primary and secondary winding connections. A first electronic switch (SW1) controls current flow through the primary winding, and a sensing resistor is coupled to the primary winding to ... | 11/09/2010 |
| 7817324 | Projector The projector has an intensity-modulable light source to emit a light beam onto a projection surface, as well as an optical switch connected after the light source for intensity modulation of the light beam emitted by the light source, and a control unit to control ... | 10/19/2010 |
| 7812545 | Circuit arrangement for controlling the operation of an electronic transformer A circuit arrangement for controlling the operation of an electronic transformer (1) whose power supply can be lowered. The electronic transformer (1) is electrically connected to an output of a switch (7), and the switch (7) can be contr... | 10/12/2010 |
| 7806562 | Lighting device comprising at least one light-emitting diode and vehicle headlight A lighting device includes at least one light-emitting diode and a cooling aggregate (400) for cooling the at least one light-emitting diode, wherein the at least one light-emitting diode is arranged on the cooling aggregate (400) and the cooling aggre... | 10/05/2010 |
| 7804253 | Self-exciting step-up converter An electronic ballast includes a step-up converter, which includes a storage inductor, a diode, an intermediate circuit condenser and a switch element. According to the invention, a current passing through the storage inductor is used in the form of an indicator of ... | 09/28/2010 |
| 7800430 | Temperature-compensated current generator, for instance for 1-10V interfaces A current generator arrangement for use, e.g., in 1-10V interfaces for lighting systems, includes at least one transistor (Q3) having a base-emitter junction wherein the voltage drop across the base-emitter junction defines the intensity of the output current... | 09/21/2010 |
| 7791287 | Multiple-cell LED arrangement, related cell and manufacturing process A LED arrangement includes:—a plurality of cells (0, 1, 2, 3) each including at least one respective LED having a binning class as a function of its emission wavelength (L1, L2) and brightness (B1, B2) characteris... | 09/07/2010 |
| 7791265 | Red-emitting luminescent substance and light source comprising such a luminescent substance Disclosed is a luminescent substance which has the structure EA3N2Si2O4:D, wherein EA=(Sr,Ba,Ca) and D=Eu, provides red emission, and is characterized by great stability and a simple production process. Said luminescent substance can be used for many different types... | 09/07/2010 |
| 7791259 | Uncemented socketed lamp A light bulb (1) with a base and inner vessel sealed in a vacuum-tight manner and surrounded by an enveloping part is provided with an adapter (13) at the end thereof made from ceramic polymer and fixed in a base insulator (12). The base insulat... | 09/07/2010 |
| 7786683 | Circuit arrangement and method for operating at least one electric lamp and at least one LED The present invention relates to a circuit arrangement for operating at least one electric lamp and at least one LED including: an inverter having a bridge circuit having at least one first bridge transistor and one second bridge transistor arranged in series with o... | 08/31/2010 |
