Patents by Inventor Emil Radkov
Emil Radkov 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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Publication number: 20150305252Abstract: Embodiments described herein provide systems and methods for promoting plant growth that combine beam angle control with spectral control. In one embodiment, an optical device can be configured to emit multiple colors of light at particular wavelengths. The optical device may also be configured to generate an emission spectrum with multiple peaks. The spectrum can be selected based on stimulating biological processes of a plant.Type: ApplicationFiled: May 7, 2015Publication date: October 29, 2015Inventors: Nicholas Peter Klase, Dung T. Duong, Emil Radkov, Paul N. Winberg
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Publication number: 20150300598Abstract: A reflector for reflecting light emitted by an LED light source and a method of forming the same are provided. The reflector has a unitary silicone body having a first end and a second end opposite the first end. The unitary silicone body has an inner surface extending between the first and second ends. The inner surface defines a first aperture at the first end for receiving the LED light source. The inner surface defines a second aperture at the second end for permitting light emitted from the LED light source to escape the unitary silicone body. The inner surface has a maximum inner diameter between the first and second ends. The inner surface has an inner diameter at the second end that is less than the maximum inner diameter.Type: ApplicationFiled: February 19, 2015Publication date: October 22, 2015Inventors: Harold W. Brunt, JR., Emil Radkov, Wei Rong, Jacob William Steinbrecher, Michael Raymond Strong
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Patent number: 9086211Abstract: Embodiments described herein provide optical systems that can mix colors to produce illumination patterns having a large area with uniform color. One embodiment of an optical system can include a set of optical units that each produces an illumination pattern with uniform color and intensity. The optical units are spaced so that the individual illumination patterns overlap to create an overall illumination pattern with an overlap area. In the overlap area, the colors emitted by the individual optical units mix to create a desired color. Embodiments of optical systems can provide beam control so that the optical units emit a high percentage of light in beam.Type: GrantFiled: October 18, 2013Date of Patent: July 21, 2015Assignee: Illumitex, Inc.Inventors: Dung T. Duong, Hyunchul Ko, Randall E. Johnson, Paul N. Winberg, Emil Radkov
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Patent number: 9060468Abstract: Embodiments described herein provide systems and methods for promoting plant growth that combine beam angle control with spectral control. In one embodiment, an optical device can be configured to emit multiple colors of light at particular wavelengths. The optical device may also be configured to generate an emission spectrum with multiple peaks. The spectrum can be selected based on stimulating biological processes of a plant.Type: GrantFiled: February 24, 2012Date of Patent: June 23, 2015Assignee: ILLUMITEX, INC.Inventors: Nicholas Peter Klase, Dung T. Duong, Emil Radkov, Paul N. Winberg
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Publication number: 20140104832Abstract: Embodiments described herein provide optical systems that can mix colors to produce illumination patterns having a large area with uniform color. One embodiment of an optical system can include a set of optical units that each produces an illumination pattern with uniform color and intensity. The optical units are spaced so that the individual illumination patterns overlap to create an overall illumination pattern with an overlap area. In the overlap area, the colors emitted by the individual optical units mix to create a desired color. Embodiments of optical systems can provide beam control so that the optical units emit a high percentage of light in beam.Type: ApplicationFiled: October 18, 2013Publication date: April 17, 2014Applicant: Illumitex, Inc.Inventors: Dung T. Duong, Hyunchul Ko, Randall E. Johnson, Paul N. Winberg, Emil Radkov
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Patent number: 8585253Abstract: Embodiments described herein provide optical systems that can mix colors to produce illumination patterns having a large area with uniform color. One embodiment of an optical system can include a set of optical units that each produces an illumination pattern with uniform color and intensity. The optical units are spaced so that the individual illumination patterns overlap to create an overall illumination pattern with an overlap area. In the overlap area, the colors emitted by the individual optical units mix to create a desired color. Embodiments of optical systems can provide beam control so that the optical units emit a high percentage of light in beam.Type: GrantFiled: March 31, 2011Date of Patent: November 19, 2013Assignee: Illumitex, Inc.Inventors: Dung T. Duong, Hyunchul Ko, Randall E. Johnson, Paul N. Winberg, Emil Radkov
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Patent number: 8519611Abstract: A white light hybrid illumination system including an amber LED, a red LED, and a phosphor converted LED such as a blue LED chip and a green phosphor, wherein a peak emission difference between the amber and red LED is at least 25 nm. This system provides higher color quality than prior devices due to its high luminous efficacy, high CRI over a wide CCT range, and better color control.Type: GrantFiled: January 14, 2009Date of Patent: August 27, 2013Assignee: GE Lighting Solutions, LLCInventors: Emil Radkov, Anant Setlur, Srinath Aanegola
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Patent number: 8329060Abstract: Embodiments of the present techniques provide a related family of phosphors that may be used in lighting systems to generate blue or blue-green light. The phosphors include systems having a general formula of: ((Sr1?zMz)1?(x+w)AwCex)3(Al1?ySiy)O4+y+3(x?w)F1?y?3(x?w) (I), wherein 0<x?0.10, 0?y?0.5, 0?z?0.5, 0?w?x, A is Li, Na, K, Rb, or Ag or any combinations thereof, and M is Ca, Ba, Mg, Zn, or Sn or any combinations thereof. Advantageously, phosphors made accordingly to these formulations maintain emission intensity across a wide range of temperatures. The phosphors may be used in lighting systems, such as LEDs and fluorescent tubes, among others, to produce blue and blue/green light. Further, the phosphors may be used in blends with other phosphors, or in combined lighting systems, to produce white light suitable for illumination.Type: GrantFiled: October 22, 2008Date of Patent: December 11, 2012Assignee: General Electric CompanyInventors: Anant Achyut Setlur, Ramachandran Gopi Chandran, Claire Susan Henderson, Pransanth Kumar Nammalwar, Emil Radkov
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Patent number: 8324640Abstract: An edge lit illumination system is directed to providing backlighting utilizing a luminescent impregnated lightguide. The apparatus includes an LED radiation source providing a first radiation and a lightguide optically coupled to the LED radiation source including a luminescent material embedded or coated on an output surface of the lightguide designed to absorb the first radiation, and emit one or more radiations. The illumination system may further include additional optical components such as reflective layers, for directing radiation striking the back surfaces of the light guide back into the lightguide, as well as diffusion layers, UV reflectors, and polarizers.Type: GrantFiled: July 2, 2004Date of Patent: December 4, 2012Assignee: GE Lighting Solutions, LLCInventors: Cherian Jacob, Chen-Lun Hsing Chen, Emil Radkov, Alok Mani Srivastava, Anant Achyut Setlur, Holly Ann Comanzo, Joseph Shiang
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Publication number: 20120230012Abstract: A light source (10) comprises a light engine (16), a base (24), a power conversion circuit (30) and an enclosure (22). The light engine (16) comprises at least one LED (12) disposed on a platform (14). The platform (14) is adapted to directly mate with the base (24) which a standard incandescent bulb light base. Phosphor (44) receives the light generated by the at least one LED (12) and converts it to visible light The enclosure (22) has a shape of a standard incandescent lamp.Type: ApplicationFiled: March 20, 2012Publication date: September 13, 2012Inventors: Christopher L. Bohler, Boris Kolodin, Emil Radkov, Srinath K. Aanegola, Stanton E. Weaver, JR., James T. Petroski, Zena Brown
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Publication number: 20120218750Abstract: Embodiments described herein provide systems and methods for promoting plant growth that combine beam angle control with spectral control. In one embodiment, an optical device can be configured to emit multiple colors of light at particular wavelengths. The optical device may also be configured to generate an emission spectrum with multiple peaks. The spectrum can be selected based on stimulating biological processes of a plant.Type: ApplicationFiled: February 24, 2012Publication date: August 30, 2012Applicant: ILLUMITEX, INC.Inventors: NICHOLAS PETER KLASE, DUNG T. DUONG, EMIL RADKOV, PAUL N. WINBERG
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Publication number: 20120176770Abstract: A light source (10) comprises a light engine (16), a base (24), a power conversion circuit (30) and an enclosure (22). The light engine (16) comprises at least one LED (12) disposed on a platform (14). The platform (14) is adapted to directly mate with the base (24) which a standard incandescent bulb light base. Phosphor (44) receives the light generated by the at least one LED (12) and converts it to visible light. The enclosure (22) has a shape of a standard incandescent lamp.Type: ApplicationFiled: March 20, 2012Publication date: July 12, 2012Inventors: Christopher L. Bohler, Boris Kolodin, Emil Radkov, Srinath K. Aanegola, Stanton E. Weaver, JR., James T. Petroski, Zena Brown
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Publication number: 20120176804Abstract: A light source (10) comprises a light engine (16), a base (24), a power conversion circuit (30) and an enclosure (22). The light engine (16) comprises at least one LED (12) disposed on a platform (14). The platform (14) is adapted to directly mate with the base (24) which a standard incandescent bulb light base. Phosphor (44) receives the light generated by the at least one LED (12) and converts it to visible light. The enclosure (22) has a shape of a standard incandescent lamp.Type: ApplicationFiled: March 20, 2012Publication date: July 12, 2012Inventors: Christopher L. Bohler, Boris Kolodin, Emil Radkov, Srinath K. Aanegola, Stanton E. Weaver, JR., James T. Petroski, Zena Brown
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Publication number: 20120068615Abstract: Embodiments described herein provide optical systems that can mix colors to produce illumination patterns having a large area with uniform color. One embodiment of an optical system can include a set of optical units that each produces an illumination pattern with uniform color and intensity. The optical units are spaced so that the individual illumination patterns overlap to create an overall illumination pattern with an overlap area. In the overlap area, the colors emitted by the individual optical units mix to create a desired color. Embodiments of optical systems can provide beam control so that the optical units emit a high percentage of light in beam.Type: ApplicationFiled: March 31, 2011Publication date: March 22, 2012Applicant: Illumitex, Inc.Inventors: Dung T. Duong, Hyunchul Ko, Randall E. Johnson, Paul N. Winberg, Emil Radkov
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Patent number: 8064058Abstract: A disclosed optical testing apparatus comprises: a plurality of optical fibers, each optical fiber having a collection end in optical communication with an output end; and a support member supporting the collection ends of the optical fibers so as to simultaneously view an examination region from different angles. A disclosed optical testing apparatus comprises a plurality of optical fibers having collection ends arranged to simultaneously view an examination region from a plurality of different angles. A disclosed optical testing apparatus comprises a plurality of optical fibers, each optical fiber having a collection end, the collection ends of the optical fibers arranged in fixed spatial relationship respective to one another to simultaneously view an examination region from different angles.Type: GrantFiled: July 15, 2008Date of Patent: November 22, 2011Assignee: GE Lighting Solutions, LLCInventors: Boris Kolodin, Emil Radkov, Mark J. Mayer
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Patent number: 7906790Abstract: A light emitting device including a phosphor blend including four or more phosphors emitting within a specific spectral range to optimize the color rendering index (CRI) for a given color coordinated temperature (CCT). The blend will include at least four phosphors selected from the following: a blue phosphor having an emission peak at 400-500 nm, a green phosphor having an emission peak at 500-575 nm, an orange phosphor having an emission peak from 575-615 nm, and a deep red phosphor having an emission peak at 615-680 nm. The preferred blends are used to make light sources with general CRI values (Ra) greater than 95 at CCT's from about 2500 to 8000 K.Type: GrantFiled: June 23, 2004Date of Patent: March 15, 2011Assignee: GE Lighting Solutions, LLCInventors: Emil Radkov, Anant A. Setlur
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Patent number: 7842960Abstract: In a light emitting package (8), at least one light emitting chip (12, 14, 16, 18) is supported by a board (10). A light transmissive encapsulant (30) is disposed over the at least one light emitting chip and over a footprint area (32) of the board. A light transmissive generally conformal shell (40) is disposed over the encapsulant and has an inner surface (44) spaced apart by an air gap (G) from, and generally conformal with, an outer surface (34) of the encapsulant. At least one phosphor (50) is disposed on or embedded in the conformal shell to output converted light responsive to irradiation by the at least one light emitting chip. A thermally conductive filler material disposed in the generally conformal shell (40) is effective to enhance a thermal conductivity of the composite shell material to a value higher than 0.3 W/(m·K).Type: GrantFiled: September 6, 2006Date of Patent: November 30, 2010Assignee: Lumination LLCInventors: James Reginelli, Srinath K. Aanegola, Emil Radkov
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Patent number: 7768189Abstract: A method for the manufacturing of white LEDs is proposed, which can achieve a tunable color rendering index (CRI) or luminosity through the use of at least two phosphor composition layers of essentially the same emission color coordinates, each composition including at least one individual phosphor compound. The method allows to optimize the devices for CRI at a given minimal luminosity requirement, or vice versa.Type: GrantFiled: August 2, 2004Date of Patent: August 3, 2010Assignee: Lumination LLCInventor: Emil Radkov
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Publication number: 20100177513Abstract: A white light hybrid illumination system including an amber LED, a red LED, and a phosphor converted LED such as a blue LED chip and a green phosphor, wherein a peak emission difference between the amber and red LED is at least 25 nm. This system provides higher color quality than prior devices due to its high luminous efficacy, high CRI over a wide CCT range, and better color control.Type: ApplicationFiled: January 14, 2009Publication date: July 15, 2010Inventors: Emil Radkov, Anant Setlur, Srinath Aanegola
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Patent number: D742267Type: GrantFiled: April 22, 2014Date of Patent: November 3, 2015Assignee: DOW CORNING CORPORATIONInventors: Michael Raymond Strong, Harold W. Brunt, Jr., Wei Rong, Jacob William Steinbrecher, Emil Radkov