Patents by Inventor Vladimir Draganov
Vladimir Draganov 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: 7731389Abstract: The present invention provides a light source for producing a substantially balanced output at a substantially optimised output intensity. In one embodiment, the light source comprises one or more light-emitting clusters of a first type and one or more light-emitting clusters of one or more other types, each one of which comprising one or more light-emitting elements, such that, when all light-emitting elements are driven to provide a substantially optimised output intensity, the spectral output of the one or more light-emitting clusters of the first type is substantially balanced by the spectral output of the one or more other light-emitting clusters.Type: GrantFiled: October 31, 2007Date of Patent: June 8, 2010Assignee: Koninklijke Philips Electronics N.V.Inventors: Vladimir Draganov, Marc Salsbury
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Publication number: 20090056789Abstract: A solar concentrator with a folded beam optical configuration allowing for compact, lightweight construction. Reflective optics may additionally be employed, including dichroic mirrors and/or antireflection coatings, to remove prevent unwanted infrared radiation reaching the solar cell. An array of such solar concentrators is also disclosed.Type: ApplicationFiled: August 21, 2008Publication date: March 5, 2009Inventor: Vladimir Draganov
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Publication number: 20080101064Abstract: The present invention provides a light source for producing a substantially balanced output at a substantially optimised output intensity. In one embodiment, the light source comprises one or more light-emitting clusters of a first type and one or more light-emitting clusters of one or more other types, each one of which comprising one or more light-emitting elements, such that, when all light-emitting elements are driven to provide a substantially optimised output intensity, the spectral output of the one or more light-emitting clusters of the first type is substantially balanced by the spectral output of the one or more other light-emitting clusters.Type: ApplicationFiled: October 31, 2007Publication date: May 1, 2008Applicant: TIR Technology LPInventors: Vladimir Draganov, Marc Salsbury
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Publication number: 20040031272Abstract: A highly efficient thermoelectric cooler controller for temperature stabilization. The circuit comprises a temperature sensor and a thermoelectric cooler, both in thermal communication with a component to be temperature stabilized. The circuit further comprises a power amplifier electrically coupled to the thermoelectric cooler. The power amplifier is employed as a controlled current source to efficiently supply current to the thermoelectric cooler when maximum cooling is required.Type: ApplicationFiled: August 13, 2003Publication date: February 19, 2004Applicant: fSONA Communications CorporationInventors: George Stephen Mecherle, Terry Lee Holcomb, Robert T. Carlson, Fang-Xin Wang, Vladimir Draganov
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Publication number: 20040022537Abstract: An optical wireless transceiver for communicating broadband signals through free space includes an input, a regenerator, a splitter and a plurality of lasers in transmitter modules. A very fast (low f-number) optical receiver module includes a reflector aligned with an input aperture. A photodiode receives the signal from the reflector for subsequent demodulation. A background rejection filter is disposed between the reflector and the photodiode at the focal point of the mirror. The transceiver provides signal regeneration and switchable data rates. Connections are made to optical or electrical digital inputs and outputs bearing signals of various protocols. The plurality of lasers includes adjustable-beamwidth collimating lenses. An efficient high-current, high power laser driver capable of modulating a laser between 100 and 1500 mA at data rates greater than 10 Mbits/sec is provided. A highly efficient thermoelectric cooler operates to cool the laser diode, or other components requiring cooling.Type: ApplicationFiled: July 29, 2003Publication date: February 5, 2004Applicant: fSONA Communiations CorporationInventors: George Stephen Mecherle, Terry Lee Holcomb, Robert T. Carlson, Fang-Xin Wang, Vladimir Draganov
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Patent number: 6667831Abstract: A compact telescope having a modified Gregorian design comprising three reflecting surfaces. The first reflecting surface is concave and is defined by an outer perimeter and an inner perimeter. The curvature of the first reflecting surface defines a focal plane of the first reflecting surface. The second reflecting surface is optically coupled to the first reflecting surface and is disposed between the first reflecting surface and the focal plane defined by the first reflecting surface. The third reflecting surface is concave and is disposed within the inner perimeter of the first reflecting surface. The curvature of the third reflecting surface is greater than the curvature of the first reflecting surface. The third reflecting surface is optically coupled to the first reflecting surface by the second reflecting surface. An aperture is disposed within the third reflecting surface. Thus light incident upon the first reflecting surface is directed through the aperture.Type: GrantFiled: March 7, 2002Date of Patent: December 23, 2003Inventors: Vladimir Draganov, Robert T. Carlson, Robert L Kehr, Derek G Montgomery, Pablo Bandera, Daryl G James
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Publication number: 20030169493Abstract: A compact telescope having a modified Gregorian design comprising three reflecting surfaces. The first reflecting surface is concave and is defined by an outer perimeter and an inner perimeter. The curvature of the first reflecting surface defines a focal plane of the first reflecting surface. The second reflecting surface is optically coupled to the first reflecting surface and is disposed between the first reflecting surface and the focal plane defined by the first reflecting surface. The third reflecting surface is concave and is disposed within the inner perimeter of the first reflecting surface. The curvature of the third reflecting surface is greater than the curvature of the first reflecting surface. The third reflecting surface is optically coupled to the first reflecting surface by the second reflecting surface. An aperture is disposed within the third reflecting surface. Thus light incident upon the first reflecting surface is directed through the aperture.Type: ApplicationFiled: March 7, 2002Publication date: September 11, 2003Inventors: Vladimir Draganov, Robert T. Carlson, Robert L. Kehr, Derek G. Montgomery, Pablo Bandera, Daryl G. James
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Publication number: 20020097468Abstract: An optical wireless transceiver for communicating broadband signals through free space includes an input, a regenerator, a splitter and a plurality of lasers in transmitter modules. A very fast (low f-number) optical receiver module includes a reflector, preferably a Mangin mirror or parabolic reflector with field corrector, aligned with an input aperture. A photodiode receives the signal from the reflector for subsequent demodulation. A background rejection filter is disposed between the reflector and the photodiode at the focal point of the mirror. The transceiver provides signal regeneration and switchable data rates. Connections are made to optical or electrical digital inputs and outputs bearing signals of various protocols. The plurality of lasers includes adjustable-beamwidth collimating lenses. Monitoring circuitry including a controller monitors the system. A stand-alone backup RF transceiver operating in conjunction with the laser transceiver provides enhanced availability.Type: ApplicationFiled: January 24, 2001Publication date: July 25, 2002Applicant: fSONA COMMUNICATIONS CORPORATIONInventors: George Stephen Mecherle, Terry Lee Holcomb, Robert T. Carlson, Fang-Xin Wang, Vladimir Draganov