Patent Treuhand Gesellschaft Fur Elektrische Gluhlampen Mbh

Osram Ag

Osram Gesellschaft MIT Beschraenkter Haftung

Osram Gesellschaft MIT Beschrankter Haftung

Patent-treuhand-gesellschaft Fur Elektrisch Gluhlampen Mbh

Osram Gmbh

Patent-treuhand-gesellschaft Fuer Elektrische Gluehlampen Mbh

Osram S.p.a. - Societa' Riunite Osram Edison Clerici

Oskar Schallmoser

Reinhard Lecheler

Peter Niedermeier

Andreas Huber

Harald Dellian

Arnulf Rupp

Ralf Hying

Karl Kyrberg

Paolo De Anna

Olaf Busse

Ralph Bertram

Nico Morgenbrod

Wolfram Sowa

Martin Brueckel

Kai Wolter

Josef Kroell

Nicola Zanforlin

Markus Baier

Peter Flesch

Michele Menegazzi

Thomas Kuchler

Bärbel Dierks

Georg Forster

Martin BRÜCKEL

Josef KRÖLL

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.

Light-emitting apparatus

Surface mounted ceramic capacitors () on printed circuit boards (') are subject to vibrations () caused by the piezo effect. Other electronic components are subject to magnetostriction and likewise generate vibrations. In prior art, the vibrations can propagate () on a printed circuit board (). To suppress the propagation of the vibrations caused by the electronic component (), the invention provides at least one slot () in the printed circuit board (&#x2032;). The slot () extends, for example, parallel to a side wall of the electronic component ().

Printed circuit board with vibration-generating electronic component

A method for operating a gas discharge lamp featuring a gas discharge lamp burner and a first and a second electrode, wherein the electrodes have a nominal electrode separation in the gas discharge lamp burner before their first activation and said nominal separation is correlated to the lamp voltage. The method may include checking whether the off-time, corresponding to the time duration between two DC voltage phases, has expired; and if the off-time has expired, omitting commutations or applying pseudo-commutations for a predefined time duration which depends on the lamp voltage in such a way that a time duration of the omission of at least one of commutations and application of pseudo-commutations is predefined for each lamp voltage.

Method and electronic operating device for operating a gas discharge lamp and projector

A method for setting a color location is provided. The method may include providing n luminous sources of which n-3 luminous sources have been, or are preset; determining a color location difference of the n luminous sources from a desired color location; and setting the 3 luminous sources not preset are set such that the desired color location is achieved.

Method and arrangement for adjusting a color location, and illumination system

An LED module for backlighting a screen comprising at least one LED, (LR, LG, LG, LB), a sensor device for detecting at least one physical quantity, and a drive device for driving the at least one LED (LR, LG, LG, LB) depending on a signal from the sensor device.

LED module with dedicated color regulation and corresponding method

A lighting system comprising a first light source, which is adapted to generate light of a first color, and at least one second light source, which is adapted to generate light of a second color, wherein the light sources are driven so as to generate a predeterminable color sequence, wherein the light sources are operated by a common control unit and driven by said control unit in the sequence required for generating the predeterminable color sequence. The light sources are connected in parallel and are electrically coupled to an energy supply unit via a first circuit node. The lighting system comprises a regulator unit and coupled to the control unit via a signal line, and wherein the control unit is adapted to predetermine a desired energy output of the energy supply unit via the regulator unit, to be precise depending on the individual color within the color sequence.

Lighting system and method for operating a lighting system

A method for detecting a statistical characteristic of a lighting device is provided. The method may include a) generate a random number within a prescribable value range; b) compare the random number with a comparison number; c) c1) if the comparison of step b) yields a match: increase the count of a storage device by one step width.

Method and device for detecting a statistical characteristic of a lighting device

A drive arrangement for light sources may include: a connection line to feed a light source, a switch element coupled to said line to apply on/off signals to said line, and a controller to control operation of said switch, said controller being sensitive to at least one of a dimming signal representative of a desired dimming level for said light source and an information-carrying digital signal, wherein said controller is configured to control operation of said switch to: a) PWM modulate an on/off signal applied to said line as a function of said dimming signal, whereby the average current conveyed towards said light source and determined by said PWM modulated on/off signal controls the brightness of said light source, b) transmit said information-carrying digital signal as an on/off information signal applied to said line, whereby the information carried by said information-carrying digital signal is transmitted over said line.

Multifunctional output stage for driving dimmed light sources and related method

An LED module () comprising a thermally conductive circuit board (); at least one LED chip (to) mounted on the thermally conductive circuit board (); at least one temperature sensor () mounted on the thermally conductive circuit board (), for determining the temperature of the at least one LED chip (to); an optical arrangement (), which is arranged above the at least one LED chip (to) and is mounted on the thermally conductive circuit board (), wherein the optical arrangement () has at least one light-guiding section (); and a light sensor () arranged on the thermally conductive circuit board (), said light sensor being arranged with respect to the at least one light-guiding section () in such a way that it can sense light guided in the light-guiding section ().

LED module

A circuit arrangement for operating a discharge lamp having a dielectric layer between at least one electrode and one discharge medium, comprising a primary circuit, which comprises a flux converter with at least one electronic switch, the flux converter having a first input terminal and a second input terminal for connecting an input voltage; a secondary circuit, which has a first output terminal and a second output terminal for connecting the discharge lamp; a transformer coupling the primary circuit to the secondary circuit, the transformer having at least a primary winding, a secondary winding and a transformer core, on which the primary winding and the secondary winding are wound; and a discrete inductance with a core, the discrete inductance being coupled electrically in parallel with the secondary winding.

Circuit arrangement and method for operating a discharge lamp

The present invention relates to a circuit arrangement having a transformation apparatus, which has a primary side (P) and a secondary side (S), wherein the primary side and the secondary side (S) are DC-isolated from one another, wherein the primary side (P) has a terminal for a supply voltage (UE) and is connected to a first reference potential, wherein the secondary side (S) comprises a first and a second output line, which, in the normal case, are not coupled to a reference potential and which form an output terminal, at which a voltage for a load (LA) can be provided, wherein it furthermore comprises: an apparatus for tapping off a measured voltage potential (CP) on the secondary side (S); and an apparatus (10) for determining whether the measured voltage potential is in a permissible range. The invention moreover relates to an operating method for a lamp using a circuit arrangement.

Circuit arrangement having a transformation apparatus and operating method for a lamp using a circuit arrangement having a transformation apparatus

A light source () is disclosed, emitting multi-colored light with light of at least two different colors, emitted from a number of primary light sources () wherein the primary light sources () are divided into groups and the brightness values of the primary light sources () within a group are determined and controlled separately according to color, such that the color location of the multi-colored light lies in a given region of the CIE standard color diagram. The invention further relates to a method for controlling such a light source () and an illumination device with such a light source (), for example, for backlighting a display.

Light source emitting mixed-colored light and method for controlling the color locus of such a light source

A converter circuit, in particular having a class E converter, comprising a drive circuit for a switching transistor MOS1 having two series-connected components which operate as a function of the threshold value, in particular comparators K1, K1' and K2, K2&#x2032;.

Control circuit for converters

Circuit arrangement having a converter without a transformer but with an inductor for the pulsed operation of dielectric barrier discharge lamps The circuit arrangement according to the invention comprises an inductor-type converter for the pulsed operation of dielectric barrier discharge lamps (EL). The invention proposes both a half bridge variant and a full bridge variant. By selecting the inductance value of the inductor (L), it is possible to influence the edge steepness of the pulses, in the case of more than one inductor even independently for the rising and falling edges.

Circuit arrangement having a converter without a transformer but with an inductor for the pulsed operation of dielectric barrier discharge lamps

The invention relates to a method and a circuit for digital-to-analog conversion, in which an interleaved pulse-width modulation signal (VPWM) is low-pass-filtered.

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Ottobrunn, Germany

Oskar Schallmoser