Patents Assigned to Tridonic Optoelectronics GmbH
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Patent number: 9425364Abstract: For the production of a white LED having a predetermined color temperature, a blue LED (2a-2d) or a UV LED is coated with a conversion layer (5) which absorbs the blue light or UV light and emits light of greater wavelength. In accordance with the invention, the exact wavelength of the LED (2a-2d) is determined and the color conversion agent (5) is applied over this LED (2a-2d) in a quantity dependent upon the determined wavelength. Through this, the tolerance of the color temperature can be significantly reduced. The color conversion agent may be applied by means of dispenser or stamp, and the quantity and/or concentration selected in dependence upon the determined wavelength. Inkjet printing, deposition from the gas phase or selective removal by means of a laser is, however, also possible. The invention also relates to light sources produced in accordance with this method.Type: GrantFiled: March 28, 2012Date of Patent: August 23, 2016Assignee: TRIDONIC OPTOELECTRONICS GMBHInventor: Günther Leising
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Patent number: 8766283Abstract: The invention relates to a light-emitting arrangement, having:—at least one light-emitting diode chip (1),—a multi-layer board (17) having a base (5) of a thermally well conducting material, in particular of metal, and—an electrical insulating and thermally conducting connection layer (2) between the emission surface of the light-diode chip (1) and the board (17).Type: GrantFiled: November 3, 2004Date of Patent: July 1, 2014Assignee: Tridonic Optoelectronics GmbHInventors: Stefan Tasch, Hans Hoschopf
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Patent number: 8614456Abstract: An LED die (3) is arranged with an adhesive (4) on an LED PCB (6). The LED PCB (6) has on the side opposite to the LED die (3) rear side contacts (7). Through this a self-contained LED lamp is formed, which e.g. can be applied by means of SMT to a board (9) or introduced into a lamp socket. In accordance with the invention, the rear side contacts (7) cover at least the half area, preferably the entire area apart from necessary exceptions, of the LED PCB (6). Through this, the heat can be discharged with slight thermal resistance. Preferably a cooling body (11) is arranged on the rear side of the board (9). In this case it is expedient if the board (9) has through-contacts for increasing the thermal conductivity.Type: GrantFiled: June 9, 2004Date of Patent: December 24, 2013Assignee: Tridonic Optoelectronics GmbHInventor: Günther Leising
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Publication number: 20120187428Abstract: For the production of a white LED having a predetermined color temperature, a blue LED (2a-2d) or a UV LED is coated with a conversion layer (5) which absorbs the blue light or UV light and emits light of greater wavelength. In accordance with the invention, the exact wavelength of the LED (2a-2d) is determined and the color conversion agent (5) is applied over this LED (2a-2d) in a quantity dependent upon the determined wavelength. Through this, the tolerance of the color temperature can be significantly reduced. The color conversion agent may be applied by means of dispenser or stamp, and the quantity and/or concentration selected in dependence upon the determined wavelength. Inkjet printing, deposition from the gas phase or selective removal by means of a laser is, however, also possible. The invention also relates to light sources produced in accordance with this method.Type: ApplicationFiled: March 28, 2012Publication date: July 26, 2012Applicant: TRIDONIC OPTOELECTRONICS GMBHInventor: Günther Leising
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Patent number: 8227273Abstract: For the production of a white LED having a predetermined color temperature, a blue LED (2a-2d) or a UV LED is coated with a conversion layer (5) which absorbs the blue light or UV light and emits light of greater wavelength. In accordance with the invention, the exact wavelength of the LED (2a-2d) is determined and the color conversion agent (5) is applied over this LED (2a-2d) in a quantity dependent upon the determined wavelength. Through this, the tolerance of the color temperature can be significantly reduced. The color conversion agent may be applied by means of dispenser or stamp, and the quantity and/or concentration selected in dependence upon the determined wavelength. Inkjet printing, deposition from the gas phase or selective removal by means of a laser is, however, also possible. The invention also relates to light sources produced in accordance with this method.Type: GrantFiled: June 9, 2004Date of Patent: July 24, 2012Assignee: Tridonic Optoelectronics GmbHInventor: Günther Leising
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Patent number: 7985015Abstract: An LED spotlight has an arrangement having at least one LED, above which there is arranged a color conversion substance, and an optical system of a substantially transparent material, which directs incident light from the LED arrangement in the direction of an exit surface by means of total internal reflection. The base surface of the conical optical system may thereby have the shape of a polygon. The outer wall of the conical optical system may have at least in partial regions planar facets. The color conversion material may be provided in the shape of a cuboid above the LED arrangement.Type: GrantFiled: May 25, 2005Date of Patent: July 26, 2011Assignee: Tridonic Optoelectronics GmbHInventors: Stefan Tasch, Hans Hoschopf, Peter Pachler
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Patent number: 7855393Abstract: The invention relates to a light emitting device having a radiation emitting element, for example a light emitting diode, and a luminescent material which is able to absorb a part of the radiation sent out by the radiation emitting element and to send out light with a wavelength which is different from the wavelength of the absorbed radiation. The device further has diffusing particles which are able to scatter a part of the radiation sent out by the radiation emitting element, and/or to scatter a part of the light sent out by the luminescent material. The diffusing particles are of non-activated luminescent material, through which production is simplified.Type: GrantFiled: January 8, 2007Date of Patent: December 21, 2010Assignee: Tridonic Optoelectronics GmbHInventors: Sven Rösler, Sylke Rösler, Wolfgang Kempfert, Detlef Starick, Peter Pachler, Stefan Tasch, Paul Hartmann, Hans Hoschopf
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Publication number: 20100213853Abstract: The present invention is based on a regulation circuit (200a, 200b) for making available a constant current supply on the basis of a transformer principle, in which there flows through the luminescent diodes (D1, . . . , DN) a triangular a.c. current (ID) varying periodically around a d.c. current value. With this method it is afforded by means of a circuitry provision that both the charging and also the discharging current (IL1) of an inductive reactance (XL1) connected in series to the luminescent diodes (D1, . . . , DN), functioning as a storage choke (L1) for filtering of mains harmonics, flows as diode current (ID) through the luminescent diodes (D1, . . . , DN). The advantage of this method consists in a significant reduction of the overall power loss (PV, ges) of the LED illumination module (100).Type: ApplicationFiled: March 4, 2010Publication date: August 26, 2010Applicants: Tridonic Optoelectronics GmbH, Knobel AG Lichttechnische KomponentenInventors: Felix Tobler, Michael Zimmermann, Stefan Tasch
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Patent number: 7777236Abstract: With a light-emitting diode arrangement (1) having a light-emitting diode chip (2) arranged on a base (3), and colour conversion material (7) surrounding the light-emitting diode chip (2), which material is constituted to convert at least a part of the light emitted by the light-emitting diode chip (2) into light of another wavelength, the colour conversion material (7) is surrounded to the side by a reflector (8), the lateral distance (x) of the light-emitting diode chip (2) to the reflector (8) amounting to at most 0.5 mm.Type: GrantFiled: August 24, 2005Date of Patent: August 17, 2010Assignee: Tridonic Optoelectronics GmbHInventor: Peter Pachler
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Publication number: 20100155761Abstract: A light emitting device includes a light emitting element comprising a nitride semiconductor and a phosphor that can absorb a part of light emitted from the light emitting element and can emit light of a wavelength different from that of the absorbed light. The phosphor comprises a silicate phosphor comprising three alkali earth metals.Type: ApplicationFiled: February 23, 2010Publication date: June 24, 2010Applicants: Toyoda Gosei Co., Ltd., Tridonic Optoelectronics GMBH, Litec GBR, Leuchstoff Breitungen GMBHInventors: Koichi Ota, Atsuo Hirano, Akihito Ota, Stefan Tasch, Peter Pachler, Gundula Roth, Walter Tews, Wofgang Kempfert, Detlef Starick
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Patent number: 7708447Abstract: The present invention is based on a regulation circuit for making available a constant current supply on the basis of a transformer principle, in which there flows through the luminescent diodes (D1, . . . , DN) a triangular a.c. current varying periodically around a DC current value. Both a charging and a discharging current of inductive reactance connected in series to the luminescent diodes (D 1, . . . , DN), functioning as a storage choke for filtering of mains harmonics, flows as diode current through the luminescent diodes (D 1, . . . , DN). According to one exemplary embodiment of the invention the ceramic circuit board of the LED illumination module in accordance with the invention has a direct mains current supply, which for protection from mechanical damage is accommodated in a transparent housing having a highly transparent polymer mass serving as optically active lens surface.Type: GrantFiled: July 14, 2006Date of Patent: May 4, 2010Assignees: Tridonic Optoelectronics GmbH, Knobel AG Lichttechnische KomponentenInventors: Felix Tobler, Michael Zimmerman, Stefan Tasch
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Patent number: 7679101Abstract: The light emitting device has a light emitting diode which is made of a nitride semiconductor and a phosphor which absorbs a part of lights emitted from the light emitting diode and emits different lights with wavelengths other than those of the absorbed lights. The phosphor is made of alkaline earth metal silicate fluorescent material activated with europium.Type: GrantFiled: November 30, 2006Date of Patent: March 16, 2010Assignees: Toyoda Gosei Co., Ltd., Tridonic Optoelectronics GmbH, Litec GBR, Leuchstoffwerk Breitungen GmbHInventors: Koichi Ota, Atsuo Hirano, Akihito Ota, Stefan Tasch, Peter Pachler, Gundula Roth, Walter Tews, Wolfgang Kempfert, Detlef Starick
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Publication number: 20090294788Abstract: The invention relates to a light emitting device having a radiation emitting element, for example a light emitting diode, and a luminescent material which is able to absorb a part of the radiation sent out by the radiation emitting element and to send out light with a wavelength which is different from the wavelength of the absorbed radiation. The device further has diffusing particles which are able to scatter a part of the radiation sent out by the radiation emitting element, and/or to scatter a part of the light sent out by the luminescent material. The diffusing particles are of non-activated luminescent material, through which production is simplified.Type: ApplicationFiled: January 8, 2007Publication date: December 3, 2009Applicant: TRIDONIC OPTOELECTRONICS GMBHInventors: Sven Rosler, Sylke Rosler, Wolfgang Kempfert, Detlef Starick, Peter Pachler, Stefan Tasch, Paul Hartmann, Hans Hoschopf
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Publication number: 20070279904Abstract: An LED spotlight has an arrangement having at least one LED, above which there is arranged a color conversion substance, and an optical system of a substantially transparent material, which directs incident light from the LED arrangement in the direction of an exit surface by means of total reflection. The base surface of the conical optical system may thereby have the shape of a polygon. The outer wall of the conical optical system may have at least in partial regions planar facets. The color conversion material may be provided in the shape of a cuboid above the LED arrangement.Type: ApplicationFiled: May 25, 2005Publication date: December 6, 2007Applicant: TRIDONIC OPTOELECTRONICS GMBHInventors: Stefan Tasch, Hans Hoschopf, Peter Pachler
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Publication number: 20070090383Abstract: The light emitting device has a light emitting diode which is made of a nitride semiconductor and a phosphor which absorbs a part of lights emitted from the light emitting diode and emits different lights with wavelengths other than those of the absorbed lights. The phosphor is made of alkaline earth metal silicate fluorescent material activated with europium.Type: ApplicationFiled: November 30, 2006Publication date: April 26, 2007Applicants: Toyoda Gosei Co., Ltd., Tridonic Optoelectronics GMBH, Litec GBR, Leuchstoffwerk Breitungen GMBHInventors: Koichi Ota, Atsuo Hirano, Akihito Ota, Stefan Tasch, Peter Pachler, Gundula Roth, Walter Tews, Wolfgang Kempfert, Detlef Starick
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Patent number: 7157746Abstract: The light emitting device has a light emitting diode which is made of a nitride semiconductor and a phosphor which absorbs a part of lights emitted from the light emitting diode and emits different lights with wavelengths other than those of the absorbed lights. The phosphor is made of alkaline earth metal silicate fluorescent material activated with europium.Type: GrantFiled: September 30, 2004Date of Patent: January 2, 2007Assignees: Toyoda Gosei Co., Ltd., Tridonic Optoelectronics GmbH, Litec GBR, Leuchstoffwerk Breitungen GmbHInventors: Koichi Ota, Atsuo Hirano, Akihito Ota, Stefan Tasch, Peter Pachler, Gundula Roth, Walter Tews, Wolfgang Kempfert, Detlef Starick
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Publication number: 20060284865Abstract: The present invention is based on a regulation circuit (200a, 200b) for making available a constant current supply on the basis of a transformer principle, in which there flows through the luminescent diodes (D1, . . . ,DN) a triangular a.c. current (ID) varying periodically around a d.c. current value. With this method it is afforded by means of a circuitry provision that both the charging and also the discharging current (IL1) of an inductive reactance (XL1) connected in series to the luminescent diodes (D1, . . . ,DN), functioning as a storage choke (L1) for filtering of mains harmonics, flows as diode current (ID) through the luminescent diodes (D1, . . . ,DN). The advantage of this method consists in a significant reduction of the overall power loss (PV,ges) of the LED illumination module (100).Type: ApplicationFiled: July 14, 2006Publication date: December 21, 2006Applicants: Tridonic Optoelectronics GmbH, Knobel AG Lichttechnische KomponentenInventors: Felix Tobler, Michael Zimmermann, Stefan Tasch
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Patent number: 7138660Abstract: The light emitting device has a light emitting diode which is made of a nitride semiconductor and a phosphor which absorbs a part of lights emitted from the light emitting diode and emits different lights with wavelengths other than those of the absorbed lights. The phosphor is made of alkaline earth metal silicate fluorescent material activated with europium.Type: GrantFiled: March 24, 2005Date of Patent: November 21, 2006Assignees: Toyoda Gosei Co., Ltd., Tridonic Optoelectronics GmbH, Litec GBR, Leuchstoffwerk Breitungen GmbHInventors: Koichi Ota, Atsuo Hirano, Akihito Ota, Stefan Tasch, Peter Pachler, Gundula Roth, Walter Tews, Wolfgang Kempfert, Detlef Starick
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Publication number: 20050218836Abstract: The present invention is based on a regulation circuit (200a, 200b) for making available a constant current supply on the basis of a transformer principle, in which there flows through the luminescent diodes (D1, . . . ,DN) a triangular a.c. current (ID) varying periodically around a d.c. current value. With this method it is afforded by means of a circuitry provision that both the charging and also the discharging current (IL1) of an inductive reactance (XL1) connected in series to the luminescent diodes (D1, . . . ,DN), functioning as a storage choke (L1) for filtering of mains harmonics, flows as diode current (ID) through the luminescent diodes (D1, . . . ,DN). The advantage of this method consists in a significant reduction of the overall power loss (PV, ges) of the LED illumination module (100).Type: ApplicationFiled: January 4, 2005Publication date: October 6, 2005Applicants: Tridonic Optoelectronics GmbH, Knobel AG Lichttechnische KomponentenInventors: Felix Tobler, Michael Zimmermann, Stefan Tasch
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Patent number: 6943380Abstract: The light emitting device has a light emitting diode which is made of a nitride semiconductor and a phosphor which absorbs a part of lights emitted from the light emitting diode and emits different lights with wavelengths other than those of the absorbed lights. The phosphor is made of alkaline earth metal silicate fluorescent material activated with europium.Type: GrantFiled: December 28, 2001Date of Patent: September 13, 2005Assignees: Toyoda Gosei Co., Ltd., Tridonic Optoelectronics GmbH, Litec GBR, Leuchstoffwerk Breitungen GmbHInventors: Koichi Ota, Atsuo Hirano, Akihito Ota, Stefan Tasch, Peter Pachler, Gundula Roth, Walter Tews, Wolfgang Kempfert, Detlef Starick