Patents by Inventor Stefan Grotsch
Stefan Grotsch has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8003998Abstract: A light-emitting diode arrangement is disclosed, comprising at least one light-emitting diode (LED) chip with a radiation decoupling surface through which a large portion of the electromagnetic radiation generated in the LED chip exits in a main direction of emission; a housing laterally surrounding the LED chip; and a reflective optic disposed after the radiation decoupling surface in the main direction of emission. The LED arrangement is particularly well suited for use in devices such as camera-equipped cell phones, digital cameras or video cameras.Type: GrantFiled: May 18, 2005Date of Patent: August 23, 2011Assignee: Osram Opto Semiconductors GmbHInventors: Georg Bogner, Stefan Grötsch, Günter Waitl, Mario Wanninger
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Publication number: 20110186880Abstract: An LED housing having a housing cavity, a carrier element, LED chips, the LED housing being formed in such a way that it may connect a plurality of LED housings of identical construction and, by its shaping, is additionally mountable in various ways.Type: ApplicationFiled: August 6, 2008Publication date: August 4, 2011Applicant: OSRAM Opto Semiconductors GmbHInventors: Steffen Köhler, Stefan Grötsch, Herbert Brunner, Rainer Huber
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Publication number: 20110176116Abstract: An LED projector includes a plurality of light sources; and an image generator which includes an arrangement of pixels, each pixel including at least one light source; wherein the LEDs are stacked epi-LEDs which include layers arranged above one another for different colors, or each pixel includes an emission surface and at least two LEDs are arranged adjacent one another in the emission surface.Type: ApplicationFiled: September 9, 2009Publication date: July 21, 2011Applicant: OSRAM OPTO SEMICONDUCTORS GMBHInventors: Stefan Grötsch, Ewald Karl Michael Günther, Alexander Wilm, Siegfried Herrmann
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Patent number: 7976200Abstract: The invention relates to an optical projection device. Said optical projection device comprises a plurality of light-emitting diode chips and at least one optical element comprising a light input surface which is associated with at least one of the light-emitting diode chips. The light decoupling surface of the light-emitting diode chip, which is adapted to the refraction index, is optically connected to the light input surface of the associated optical element.Type: GrantFiled: March 9, 2007Date of Patent: July 12, 2011Assignee: Osram Opto Semiconductors GmbHInventor: Stefan Grötsch
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Patent number: 7976205Abstract: A light-emitting module is specified, comprising at least two light sources disposed on a common carrier. At least one of said light sources includes at least two LED chips. Each light source of the module is followed downstream by an optic body of an optical element, and the optic bodies are suitable for guiding electromagnetic radiation to a light exit surface of the optical element. An optical projection apparatus comprising such a light-emitting module is also specified.Type: GrantFiled: August 31, 2006Date of Patent: July 12, 2011Assignee: Osram Opto Semiconductors GmbHInventors: Stefan Grötsch, Sergey Kudaev, Bryce Anton Moffat, Peter Schreiber
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Publication number: 20110019411Abstract: An optoelectronic module for emitting monochromatic radiation in the visible wavelength range is specified. The module has a plurality of light emitting diode chips which generate UV radiation. The UV radiation is converted into light in the visible range, for example, into green light, by a wavelength converter. The coupling-out of light from the module is optimized by the use of two selectively reflecting and transmitting filters. This module can be used as a light source in a projection apparatus.Type: ApplicationFiled: January 26, 2009Publication date: January 27, 2011Inventors: Kirstin Petersen, Stefan Grötsch, Stephan Miller, Günter Spath, Norbert Linder, Dominik Eisert, Matthias Peter
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Publication number: 20100314635Abstract: A chip arrangement for an optoelectronic component includes at least one semiconductor chip which emits electromagnetic radiation, and a connection arrangement which includes planes that are electrically insulated from one another, at least one plane having a cavity and at least one plane being a heat dissipating plane, wherein at least two electrically insulated conductors are arranged in at least the two planes, the semiconductor chip is arranged within the cavity and has at least two connection locations, and each of the connection locations is electrically conductively connected to a respective one of the conductors.Type: ApplicationFiled: November 21, 2008Publication date: December 16, 2010Applicant: OSRAM OPTO SEMICONDUCTORS GMBHInventors: Herbert Brunner, Steffen Koehler, Raimund Schwarz, Stefan Grotsch
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Publication number: 20100295073Abstract: An optoelectronic semiconductor chip (1) comprises a radiation passage area (3), a contact metallization (2a) applied to the radiation passage area (3), and a first reflective layer sequence (2b) applied to that surface of the contact metallization (2a) which is remote from the radiation passage area (3). An optoelectronic component comprising such a chip is also specified.Type: ApplicationFiled: June 23, 2008Publication date: November 25, 2010Applicant: OSRAM OPTO SEMICONDUCTORS GMBHInventors: Stefan Grötsch, Norbert Linder
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Patent number: 7837371Abstract: A light source, such as for a projection system, having a plurality of semiconductor chips and at least two different, electromagnetic-radiation-emitting chip types with different emission spectra, each semiconductor chip having a chip coupling-out area through which radiation is coupled out. Furthermore, the light source has a plurality of primary optical elements, each semiconductor chip being assigned a primary optical element, which in each case has a light input and a light output and reduces the divergence of at least part of the radiation emitted by the semiconductor chip during the operation thereof. The semiconductor chips with the primary optical elements are arranged in at least two groups that are spatially separate from one another, with the result that the groups emit separate light cones during operation of the semiconductor chips. The separate light cones of the groups are superposed by means of a secondary optical arrangement to form a common light cone.Type: GrantFiled: December 23, 2008Date of Patent: November 23, 2010Assignee: Osram Opto Semiconductors GmbHInventors: Stefan Grötsch, Georg Bogner
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Publication number: 20100270569Abstract: The invention relates to an optoelectronic component having at least one semi-conductor body (1) that has an active area (2) for producing electromagnetic radiation and a housing (4) that has a filter element (5) which is arranged downstream from the active area (2) in the direction of radiation. The filter element (5) selectively transmits a primary radiation fraction (7) having a predetermined primary radiation property.Type: ApplicationFiled: September 17, 2007Publication date: October 28, 2010Inventors: Stefan Grotsch, Norbert Linder
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Publication number: 20100230697Abstract: An optoelectronic semiconductor module includes a chip carrier, a light emitting semiconductor chip mounted on the chip carrier and a cover element with an at least partly light transmissive cover plate, which is arranged on the side of the semiconductor chip facing away from the chip carrier, and has a frame part, wherein the frame part laterally encloses the semiconductor chip, is joined to the cover plate in a joining-layer free fashion and is joined to the chip carrier on its side remote from the cover plate.Type: ApplicationFiled: August 11, 2008Publication date: September 16, 2010Applicant: OSRAM OPTO SEMICONDUCTORS GMBHInventors: Steffen Köhler, Moritz Engl, Frank Singer, Stefan Grötsch, Thomas Zeiler, Mathias Weiss
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Publication number: 20100207148Abstract: A radiation-emitting component includes a semiconductor layer stack having an active region that emits electromagnetic radiation, and at least one surface of the semiconductor layer stack or of an optical element that transmits the electromagnetic radiation wherein the surface has a normal vector, wherein on the at least one surface of the semiconductor layer stack or of the optical element through which the electromagnetic radiation passes, an antireflection layer is arranged such that, for a predetermined wavelength, it has a minimum reflection at a viewing angle relative to the normal vector of the surface at which an increase in a zonal luminous flux of the electromagnetic radiation has approximately a maximum.Type: ApplicationFiled: August 28, 2008Publication date: August 19, 2010Applicant: OSRAM OPTO SEMICONDUCTORS GMBHInventors: Stefan Grötsch, Jan Marfeld, Jörg Erich Sorg, Moritz Engl, Steffen Köhler
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Patent number: 7726835Abstract: In an LED array comprising a plurality of radiation-emitting semiconductor chips each of which has a radiation outcoupling surface, the radiation emitted by the semiconductor chips being outcoupled substantially through said radiation outcoupling surface, and a cover body that is transparent to the emitted radiation, the transparent cover body comprises, on a surface facing toward the radiation outcoupling surfaces of the semiconductor chips, one or more conductive traces made of a conductive material that is transparent to the emitted radiation, and the semiconductor chips each comprise, on the radiation outcoupling surface, at least one electrical contact that is connected to the conductive trace or to at least one of the plurality of conductive traces. At least one luminescence conversion material is contained in the transparent cover body and/or applied in a layer to the cover body and/or the semiconductor chips.Type: GrantFiled: February 6, 2006Date of Patent: June 1, 2010Assignee: Osram Opto Semiconductors GmbHInventors: Georg Bogner, Moritz Engl, Stefan Grötsch, Patrick Kromotis, Jorg Erich Sorg
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Patent number: 7683395Abstract: A light-emitting diode arrangement having at least one light-emitting diode chip (1), each light-emitting diode chip (1) being assigned at least one optical element (4). In addition, the light-emitting diode arrangement has at least one heat-conducting element (13) which is suitable to carry away the heat generated by the light-emitting diode chip, and at least one cooling apparatus which is suitable to carry heat away from the heat-conducting element. The light-emitting diode arrangement is particularly well suited, for example, to use in motor vehicle headlamps.Type: GrantFiled: September 29, 2005Date of Patent: March 23, 2010Assignee: Osram Opto Semiconductors GmbHInventors: Rainer Huber, Joachim Reill, Kurt-Jürgen Lang, Moritz Engl, Markus Hofmann, Mario Wanninger, Michael Sailer, Stefan Grötsch
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Patent number: 7621658Abstract: A light-emitting module is specified that comprises a light source, a carrier for said light source, and an optical element, wherein the optical element comprises dowel pins that engage in corresponding recesses in the carrier. The light-emitting module is particularly well suited for use in optical projection apparatuses and in motor vehicle projection lamps.Type: GrantFiled: September 11, 2007Date of Patent: November 24, 2009Assignee: Osram Opto Semiconductors GmbHInventors: Stefan Grötsch, Moritz Engl, Florin Oswald, Michael Sailer, Alexander Wilm
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Publication number: 20090251918Abstract: Disclosed is a lighting device comprising at least one LED and at least one optical element, wherein the LED and the optical element are aligned with each other by means of at least one dowel pin. A method of making such a lighting device is also specified. The described lighting device is particularly well suited for use in a vehicle headlight.Type: ApplicationFiled: October 20, 2005Publication date: October 8, 2009Applicant: OSRAM OPTO SEMICONDUCTORS GMBHInventors: Moritz Engl, Stefan Grötsch, Markus Hofmann, Rainer Huber, Kurt-Jurgen Lang, Jóachim Reill, Michael Sailer, Mario Wanninger
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Patent number: 7581860Abstract: A headlight having a multitude of headlight elements, which each have at least one semiconductor chip which emits electromagnetic radiation; a primary optics element, which reduces the divergence of the light which is incident through the light input; and at least one headlight element output, which emits a part of the headlight light from the headlight element. At least some of the headlight element outputs are arranged in at least two groups in such a way that the arrangement of at least one of the groups and/or at least overall arrangement of headlight element outputs of multiple groups corresponds essentially to a desired emission characteristic of the headlight, in that, in particular, it has a shape which corresponds essentially to the cross-sectional shape of a desired headlight beam, wherein the semiconductor chips which belong to the headlight element outputs of one group can each be operated independently of other semiconductor chips.Type: GrantFiled: March 24, 2004Date of Patent: September 1, 2009Assignee: Osram Opto Semiconductors GmbHInventors: Georg Bogner, Stefan Grötsch, Joachim Reill
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Patent number: 7564080Abstract: A method for producing a laser diode component having an electrically insulating housing basic body and electrical connecting conductors, which are led out from the housing basic body and are accessible from outside the housing basic body. The housing basic body is produced from a material which is transmissive to a laser radiation emitted by the laser diode component. The housing basic body includes a chip mounting region. A beam axis of the laser diode component runs through the housing basic body. A housing that can be produced in this way and laser diode component having a housing of this type are also disclosed.Type: GrantFiled: May 26, 2004Date of Patent: July 21, 2009Assignee: Osram Opto Semiconductors GmbHInventors: Christian Ferstl, Stefan Grötsch, Markus Zeiler
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Publication number: 20090154155Abstract: The invention relates to an optical projection device. Said optical projection device comprises a plurality of light-emitting diode chips and at least one optical element comprising a light input surface which is associated with at least one of the light-emitting diode chips. The light decoupling surface of the light-emitting diode chip, which is adapted to the refraction index, is optically connected to the light input surface of the associated optical element.Type: ApplicationFiled: March 9, 2007Publication date: June 18, 2009Inventor: Stefan Grotsch
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Publication number: 20090129230Abstract: A light guide is provided. The light guide has an uneven light input face and even side faces, which are arranged directly downstream of the light input face. Furthermore, an optoelectronic component with such a light guide is provided.Type: ApplicationFiled: February 2, 2006Publication date: May 21, 2009Applicant: OSRAM OPTO SEMICONDUCTORS GMBHInventor: Stefan Grotsch