Patents by Inventor Stefan Groetsch
Stefan Groetsch 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: 8439529Abstract: 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: GrantFiled: October 20, 2005Date of Patent: May 14, 2013Assignee: Osram Opto Semiconductors GmbHInventors: Moritz Engl, Stefan Grötsch, Markus Hofmann, Rainer Huber, Kurt-Jürgen Lang, Joachim Reill, Michael Sailer, Mario Wanninger
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Publication number: 20130039374Abstract: In at least one embodiment of the semiconductor laser light source, the latter includes a carrier and at least two semiconductor lasers. The semiconductor lasers are mounted on a carrier top. The semiconductor laser light source furthermore includes at least one optical component, which is arranged downstream of at least one of the semiconductor lasers in a direction of emission. The semiconductor lasers and the optical component are housed tightly in a common enclosure by way of a cover. The dimensions of the enclosure, viewed in three orthogonal spatial directions, amount in each case to at most 8 mm×8 mm×7 mm.Type: ApplicationFiled: March 21, 2011Publication date: February 14, 2013Applicant: OSRAM OPTO SEMICONDUCTORS GMBHInventors: Stephan Lutgen, Stefan Groetsch
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Patent number: 8373186Abstract: 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: GrantFiled: August 28, 2008Date of Patent: February 12, 2013Assignee: OSRAM Opto Semiconductors GmbHInventors: Stefan Grötsch, Jan Marfeld, Jörg Erich Sorg, Moritz Engl, Steffen Köhler
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Patent number: 8354682Abstract: A radiation-emitting component (10) having a layer stack (1) which is based on a semiconductor material and which has an active layer sequence (4) for generating electromagnetic radiation, and a filter element (2) which is arranged after the active layer sequence (4) in the irradiation direction (A) and by means of which a first radiation component is transmitted, and a second radiation component is reflected into the layer stack (1), wherein the second radiation component is subjected to a deflection process or an absorption and emission process, and the deflected or emitted radiation impinges on the filter element (2).Type: GrantFiled: August 13, 2007Date of Patent: January 15, 2013Assignee: Osram Opto Semiconductors GmbHInventors: Franz Eberhard, Stefan Grötsch, Norbert Linder, Jürgen Moosburger, Klaus Streubel, Ralph Wirth, Matthias Sabathil, Julius Muschaweck, Krister Bergenek
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Patent number: 8299484Abstract: An optoelectronic semiconductor chip including a radiation passage area, where a contact metallization is applied to the radiation passage area, and a first reflective layer sequence is applied to that surface of the contact metallization which is remote from the radiation passage area, and an optoelectronic component that includes such a chip.Type: GrantFiled: June 23, 2008Date of Patent: October 30, 2012Assignee: Osram Opto Semiconductors GmbHInventors: Stefan Grötsch, Norbert Linder
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Publication number: 20120256161Abstract: A light-emitting diode is specified, comprising a first semiconductor body (10), which comprises at least one active region (11) which is electrically contact-connected, wherein electromagnetic radiation (110) in a first wavelength range is generated in the active region (11) during the operation of the light-emitting diode, a second semiconductor body (20), which is fixed to the first semiconductor body (10) at a top side (10a) of the first semiconductor body (10), wherein the second semiconductor body (20) has a re-emission region (21) with a multiple quantum well structure (213), and wherein electromagnetic radiation (110) in the first wavelength range is absorbed and electromagnetic radiation in a second wavelength range (220) is re-emitted in the re-emission region (21) during the operation of the light-emitting diode, and a connecting material (30) arranged between the first (10) and second semiconductor body (20), wherein the connecting material (30) mechanically connects the first (10) and the secondType: ApplicationFiled: March 15, 2010Publication date: October 11, 2012Inventors: Matthias Sabathil, Simon Kocur, Stefan Grötsch
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Patent number: 8283684Abstract: An LED semiconductor body includes a number of at least two radiation-generating active layers. Each active layer has a forward voltage, wherein the number of active layers is adapted to an operating voltage in such a way that the voltage dropped across a series resistor connected in series with the active layers is at most of the same magnitude as a voltage dropped across the LED semiconductor body. The invention furthermore describes various uses of the LED semiconductor body.Type: GrantFiled: September 19, 2007Date of Patent: October 9, 2012Assignee: OSRAM Opto Semiconductors GmbHInventors: Reiner Windisch, Ralph Wirth, Stefan Groetsch, Georg Bogner, Guenter Kirchberger, Klaus Streubel
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Patent number: 8203160Abstract: An LED semiconductor body includes a number of at least two radiation-generating active layers. Each active layer has a forward voltage, wherein the number of active layers is adapted to an operating voltage in such a way that the voltage dropped across a series resistor connected in series with the active layers is at most of the same magnitude as a voltage dropped across the LED semiconductor body. The invention furthermore describes various uses of the LED semiconductor body.Type: GrantFiled: September 19, 2007Date of Patent: June 19, 2012Assignee: OSRAM Opto Semiconductors GmbHInventors: Reiner Windisch, Ralph Wirth, Stefan Groetsch, Georg Bogner, Guenter Kirchberger, Klaus Streubel
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Publication number: 20120133908Abstract: An optical projection apparatus includes a first light source, a second light source, and an imaging element, which is illuminated by the first light source and the second light source during operation. The light source includes a light-emitting diode chip that emits red light during operation. The second light source includes a first light-emitting diode chip, which emits green light during operation. A second light-emitting diode chip emits blue light during operation. The second light-emitting diode chip is arranged on the first light-emitting diode chip at a radiation exit surface of the first light-emitting diode chip. Electromagnetic radiation generated in the first light-emitting diode chip during operation passes through the second light-emitting diode chip.Type: ApplicationFiled: June 15, 2010Publication date: May 31, 2012Applicant: OSRAM Opto Semiconductors GmbHInventors: Stefan Grötsch, Simon Kocur, Matthias Sabathil
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Patent number: 8189123Abstract: A projection apparatus is specified, comprising a light modulator having a light receiving region with a cross-sectional area to be illuminated of the size AM and a maximum acceptance angle ? for incident light, and at least one light source by means of which, during its operation, a light cone is produced for illuminating said cross-sectional area of said light receiving region and which comprises a number N of LED chips having a maximum radiation angle ?. At least one of the LED chips has a radiation decoupling area of the size AD. The relation 0.7·(AM·sin2(?))/(AD·sin2(?)·n2)?N?1.3·(AM·sin2(?))/(AD·sin2(?)·n2) applies, where n is equal to 1 or to the refractive index of a coupling medium with which the LED chips are provided.Type: GrantFiled: April 21, 2006Date of Patent: May 29, 2012Assignee: Osram Opto Semiconductors GmbHInventors: Gerhard Kuhn, Moritz Engl, Patrick Kromotis, Stefan Grötsch, Josef Hüttner, Mario Wanninger, Georg Bogner
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Publication number: 20120111628Abstract: An electronic device includes a base body, which has a top side and also an underside lying opposite the top side. The base body has connection locations at its underside. An electronic component is arranged at the base body at the top side of the base body. The base body has at least one side area having at least one point of inspection having a first region and second region. The second region is embodied as an indentation in the first region. The first and the second region contain different materials.Type: ApplicationFiled: June 22, 2010Publication date: May 10, 2012Inventors: Michael Zitzlsperger, Stefan Groetsch
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Publication number: 20120112337Abstract: An optoelectronic component (1) is provided, having at least two connecters (2) for electrical contacting of the component (1), a housing body (3), in which the connecters (2) are embedded in places, a heat sink (4), which is connected to at least one connecter (2), wherein the housing body (3) is formed of a plastics material, the housing body (3) comprises an opening (30), in which the heat sink (4) is freely accessible in places, at least one optoelectronic semiconductor chip (5) is arranged in the opening (30) on the heat sink (4), and at least two of the connecters (2) each comprise a chip-end portion (2c), which faces the at least one optoelectronic semiconductor chip (5), wherein the chip-end portions (2c) of the at least two connecters (2) are arranged in a common plane.Type: ApplicationFiled: August 20, 2009Publication date: May 10, 2012Applicant: OSRAM Opto Semiconductors GmbHInventors: Stefan Groetsch, Thomas Zeiler, Michael Zitzlsperger, Harald Jaeger
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Publication number: 20120107973Abstract: A method for producing luminous means proposes providing a carrier serving as a heat sink, said carrier comprising a planar chip mounting region. The planar chip mounting region is structured for the purpose of producing a first partial region and at least one second partial region. In this case, the first partial region has a solder-repellent property after structuring. Afterward, a solder is applied to the planar chip mounting region, such that said solder wets the at least one second partial region. At least one optoelectronic body is fixed into the at least one second partial region with the solder at the carrier. Finally, contact-connections are formed for the purpose of feeding electrical energy to the optoelectronic luminous body.Type: ApplicationFiled: November 27, 2009Publication date: May 3, 2012Applicant: OSRAM Opto Semiconductors GmbHInventors: Stefan Grötsch, Klaus Müller
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Patent number: 8154031Abstract: A module comprising a regular arrangement of individual radiation-emitting semiconductor bodies (1) which are applied on a mounting area (6) of a carrier (2), wherein a wire connection is fitted between two adjacent radiation-emitting semiconductor bodies (1) on a top side, opposite to the mounting area (6), of the two radiation-emitting semiconductor bodies (1).Type: GrantFiled: February 10, 2006Date of Patent: April 10, 2012Assignee: OSRAM Opto Semiconductors GmbHInventors: Stefan Grötsch, Berthold Hahn, Stefan Illek, Wolfgang Schnabel
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Patent number: 8096689Abstract: A motor-vehicle headlight is specified, having at least one light-emitting diode, and an apparatus for controllable manipulation of the beam path of the electromagnetic radiation emitted from the light-emitting diode. The described motor-vehicle headlight is distinguished inter alia by a particularly variable emission characteristic.Type: GrantFiled: October 25, 2007Date of Patent: January 17, 2012Assignee: Osram Opto Semiconductors GmbHInventors: Moritz Engl, Stefan Grötsch, Markus Hofmann, Rainer Huber, Kurt Jürgen Lang, Mario Wanninger
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Patent number: 8071990Abstract: An optoelectronic component emitting electromagnetic radiation, comprising a housing body which has a cavity, the cavity being fashioned trenchlike and in the cavity a plurality of semiconductor chips being arranged in a linear arrangement. Two neighboring semiconductor chips have a distance from one another which is less than or equal to one-and-a-half lateral edge lengths of the semiconductor chips and greater than or equal to 0 ?m. In addition, an illumination module comprising such a component is disclosed.Type: GrantFiled: July 21, 2005Date of Patent: December 6, 2011Assignee: OSRAM Opto Semiconductors GmbHInventors: Georg Bogner, Moritz Engl, Stefan Grötsch, Patrick Joseph Kromotis
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Publication number: 20110240955Abstract: An LED semiconductor body includes a number of at least two radiation-generating active layers. Each active layer has a forward voltage, wherein the number of active layers is adapted to an operating voltage in such a way that the voltage dropped across a series resistor connected in series with the active layers is at most of the same magnitude as a voltage dropped across the LED semiconductor body. The invention furthermore describes various uses of the LED semiconductor body.Type: ApplicationFiled: September 19, 2007Publication date: October 6, 2011Inventors: Reiner Windisch, Ralph Wirth, Stefan Groetsch, Georg Bogner, Guenter Kirchberger, Klaus Streubel
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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