Patents by Inventor Roland Winston
Roland Winston 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: 20080245401Abstract: Optical devices and systems that provide high solar flux onto a multi-junction solar cell, or other target cell, to produce efficient electrical output. An optical device includes a primary focusing element, and a non-imaging secondary concentrator having an entry aperture and an exit aperture. The primary focus element is configured to focus light from a distant source onto the entry aperture of the secondary concentrator. The primary focusing element has an f-number that is greater than about 1, e.g., between 1 and 4 or greater. The device includes a solar cell located proximal to the exit aperture of the secondary concentrator. In certain aspects, the primary focusing element includes a Fresnel lens, a diffractive lens and/or a reflector. In certain aspects, a Fresnel lens used as the primary is flat, substantially square, curved and/or refractive.Type: ApplicationFiled: February 25, 2008Publication date: October 9, 2008Applicant: The Regents of the University of CaliforniaInventors: Roland Winston, Alexander Ritschel
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Patent number: 7424197Abstract: An optical device for collecting light and selectively outputting or concentrating the light. A layer has an optical index of referaction n1, and top, bottom and side surfaces defining an angel of inclination ?. A back surface spans the top, bottom and side surface. A first layer is coupled to the bottom surface of the layer and has an index of refraction n2. The first layer index n2 causes light input through the back surface of the layer to be preferentially output into the first layer. A second layer is coupled to the bottom of the first layer and selectively causes output of light into ambient. Additional layers, such as alight polarization layer, a polarization converting layer and a post LCD diffuser layer can be used to make preferential use of polarized light of diffuse light having passed through the LCD layer to enhance viewing of the output light.Type: GrantFiled: September 28, 2006Date of Patent: September 9, 2008Assignee: 3M Innovative Properties CompanyInventors: Roland Winston, Robert L. Holman, Benjamin A. Jacobson, Robert M. Emmons, Philip Gleckman
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Patent number: 7418188Abstract: An optical device for collecting light and selectively outputting or concentrating the light. A layer has an optical index of referaction n1, and top, bottom and side surfaces defining an angle of inclination ?. A back surface spans the top, bottom and side surface. A first layer is coupled to the bottom surface of the layer and has an index of refraction n2. The first layer index n2 causes light input through the back surface of the layer to be preferentially output into the first layer. A second layer is coupled to the bottom of the first layer and selectively causes output of light into ambient. Additional layers, such, as alight polarization layer, a polarization converting layer and a post LCD diffuser layer can be used to make preferential use of polarized light of diffuse light having passed through the LCD layer to enhance viewing of the output light.Type: GrantFiled: June 28, 2006Date of Patent: August 26, 2008Assignee: 3M Innovative Properties CompanyInventors: Roland Winston, Robert L. Holman, Benjamin A. Jacobson, Robert M. Emmons, Philip Gleckman
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Patent number: 7412976Abstract: A solar collector with external reflector. A solar collector includes a glass housing having a heat pipe disposed within the housing and a light reflector disposed external to the housing.Type: GrantFiled: April 22, 2004Date of Patent: August 19, 2008Assignee: Solargenix Energy LLCInventor: Roland Winston
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Patent number: 7344280Abstract: An apparatus includes a lens having a light entrance end forming a recess defining a concave surface, a heat sink having an end portion facing the recess and a light source positioned to transmit light having a predetermined wavelength via the concave surface of the recess into the lens. The lens may be a non-imaging lens or a total internal reflection lens (TIR) configured to radiate optical radiation received at the concave surface. The light source is in thermal communication with the heat sink to conduct heat generated by the light source to the heat sink.Type: GrantFiled: December 4, 2006Date of Patent: March 18, 2008Assignee: Teledyne Lighting and Display Products, Inc.Inventors: George W. Panagotacos, David G. Pelka, Roland Winston
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Publication number: 20080047605Abstract: Optical systems and methods that concentrate light from a distant source, such as the sun, onto a target device, such as a solar cell. Light impinging from the distant source, is focused or imaged by a plurality of primary reflective segments of a primary mirror element onto a plurality of corresponding secondary reflective segments. The secondary mirror segments image the corresponding primary segments onto an exit aperture such that the exit aperture is uniformly illuminated. A target cell may be located proximal to the exit aperture, or an entry aperture of a non-imaging concentrator may be positioned proximal the exit aperture, wherein the concentrator concentrates the reflected light onto the target cell.Type: ApplicationFiled: March 8, 2007Publication date: February 28, 2008Applicant: Regents of the University of CaliforniaInventors: Pablo Benitez, Roland Winston
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Patent number: 7209628Abstract: An optical device for collecting light and selectively outputting or concentrating the light. A layer has an optical index of refraction n1, and top, bottom and side surfaces defining an angel of inclination ?. A back surface spans the top, bottom and side surface. A first layer is coupled to the bottom surface of the layer and has an index of refraction n2. The first layer index n2 causes light input through the back surface of the layer to be preferentially output into the first layer. A second layer is coupled to the bottom of the first layer and selectively causes output of light into ambient. Additional layers, such as alight polarization layer, a polarization converting layer a and a post LCD diffuser layer can be used to make preferential use of polarized light of diffuse light having passed through the LCD layer to enhance viewing of the output light.Type: GrantFiled: May 16, 2005Date of Patent: April 24, 2007Assignee: 3M Innovative Properties CompanyInventors: Roland Winston, Robert L. Holman, Benjamin A. Jacobson, Robert M. Emmons, Philip Gleckman
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Publication number: 20070086197Abstract: An apparatus includes a lens having a light entrance end forming a recess defining a concave surface, a heat sink having an end portion facing the recess and a light source positioned to transmit light having a predetermined wavelength via the concave surface of the recess into the lens. The lens may be a non-imaging lens or a total internal reflection lens (TIR) configured to radiate optical radiation received at the concave surface. The light source is in thermal communication with the heat sink to conduct heat generated by the light source to the heat sink.Type: ApplicationFiled: December 4, 2006Publication date: April 19, 2007Inventors: George Panagotacos, David Pelka, Roland Winston
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Publication number: 20070036512Abstract: An optical device for collecting light and selectively outputting or concentrating the light. A layer has an optical index of referaction n1, and top, bottom and side surfaces defining an angel of inclination ?. A back surface spans the top, bottom and side surface. A first layer is coupled to the bottom surface of the layer and has an index of refraction n2. The first layer index n2 causes light input through the back surface of the layer to be preferentially output into the first layer. A second layer is coupled to the bottom of the first layer and selectively causes output of light into ambient.Type: ApplicationFiled: October 18, 2006Publication date: February 15, 2007Inventors: Roland Winston, Robert Holman, Benjamin Jacobson, Robert Emmons, Philip Gleckman
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Publication number: 20070025680Abstract: An optical device for collecting light and selectively outputting or concentrating the light. A layer has an optical index of referaction n1, and top, bottom and side surfaces defining an angel of inclination ?. A back surface spans the top, bottom and side surface. A first layer is coupled to the bottom surface of the layer and has an index of refraction n2. The first layer index n2 causes light input through the back surface of the layer to be preferentially output into the first layer. A second layer is coupled to the bottom of the first layer and selectively causes output of light into ambient. Additional layers, such as alight polarization layer, a polarization converting layer and a post LCD diffuser layer can be used to make preferential use of polarized light of diffuse light having passed through the LCD layer to enhance viewing of the output light.Type: ApplicationFiled: September 28, 2006Publication date: February 1, 2007Inventors: Roland Winston, Robert Holman, Benjamin Jacobson, Robert Emmons, Philip Gleckman
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Patent number: 7163318Abstract: An apparatus that includes a lens having a light entrance end forming a recess, a heat sink having an end portion facing the recess, and a light source positioned to transmit light via the recess into the lens. The light source is in thermal communication with the heat sink, which conducts away heat generated by the light source. The apparatus may be used to provide optical radiation at various wavelengths, activating tooth whitening material, and curing dental composite material.Type: GrantFiled: September 30, 2003Date of Patent: January 16, 2007Assignee: Teledyne Lighting and Display Products, Inc.Inventors: George W. Panagotacos, David G. Pelka, Roland Winston
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Publication number: 20060245718Abstract: An optical device for collecting light and selectively outputting or concentrating the light. A layer has an optical index of referaction n1, and top, bottom and side surfaces defining an angel of inclination ?. A back surface spans the top, bottom and-side surface. A first layer is coupled to the bottom surface of the layer and has an index of refraction n2. The first layer index n2 causes light input through the back surface of the layer to be preferentially output into the first layer. A second layer is coupled to the bottom of the first layer and selectively causes output of light into ambient. Additional layers, such, as alight polarization layer, a polarization converting layer and a post LCD diffuser layer can be used to make preferential use of polarized light of diffuse light having passed through the LCD layer to enhance viewing of the output light.Type: ApplicationFiled: June 28, 2006Publication date: November 2, 2006Inventors: Roland Winston, Robert Holman, Benjamin Jacobson, Robert Emmons, Philip Gleckman
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Publication number: 20060207650Abstract: An optical system for a solar energy device to produce electrical energy. The optical system includes an aplanatic optical imaging system, a non-imaging solar concentrator coupled to the aplanatic system and a multi-junction solar cell to receive highly concentrated light from the non-imaging solar concentrator.Type: ApplicationFiled: March 21, 2005Publication date: September 21, 2006Inventors: Roland Winston, Jeffrey Gordon
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Patent number: 6993242Abstract: An optical device for collecting light and selectively outputting or concentrating the light. A layer has an optical index of referaction n1, and top, bottom and side surfaces defining an angel of inclination ?. A back surface spans the top, bottom and side surface. A first layer is coupled to the bottom surface of the layer and has an index of refraction n2. The first layer index n2 causes light input through the back surface of the layer to be preferentially output into the first layer. A second layer is coupled to the bottom of the first layer and selectively causes output of light into ambient. Additional layers, such as alight polarization layer, a polarization converting layer and a post LCD diffuser layer can be used to make preferential use of polarized light of diffuse light having passed through the LCD layer to enhance viewing of the output light.Type: GrantFiled: August 14, 2003Date of Patent: January 31, 2006Assignee: 3M Innovative Properties CompanyInventors: Roland Winston, Robert L. Holman, Benjamin A. Jacobson, Robert M. Emmons, Philip Gleckman
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Publication number: 20050232572Abstract: An optical device for collecting light and selectively outputting or concentrating the light. A layer has an optical index of referaction n1, and top, bottom and side surfaces defining an angel of inclination ?. A back surface spans the top, bottom and side surface. A first layer is coupled to the bottom surface of the layer and has an index of refraction n2. The first layer index n2 causes light input through the back surface of the layer to be preferentially output into the first layer. A second layer is coupled to the bottom of the first layer and selectively causes output of light into ambient. Additional layers, such as alight polarization layer, a polarization converting layer a and a post LCD diffuser layer can be used to make preferential use of polarized light of diffuse light having passed through the LCD layer to enhance viewing of the output light.Type: ApplicationFiled: May 16, 2005Publication date: October 20, 2005Inventors: Roland Winston, Robert Holman, Benjamin Jacobson, Robert Emmons, Philip Gleckman
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Publication number: 20040261788Abstract: A solar collector with external reflector. A solar collector includes a glass housing having a heat pipe disposed within the housing and a light reflector disposed external to the housing.Type: ApplicationFiled: April 22, 2004Publication date: December 30, 2004Applicant: Solargenix Energy LLCInventor: Roland Winston
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Publication number: 20040140000Abstract: The present invention relates to multiple reflector light or solar energy concentrators and systems using such concentrators. More particularly, the invention is concerned with an arrangement of optical elements for the efficient collection of light while minimizing complexities of optics needed to achieve light collection and concentration. At least three reflectors are involved. A concave primary reflector receives the solar energy and sends it to a secondary convex reflector positioned in the focal zone of the first reflector. In turn, the secondary reflector sends the solar energy, at least in part, to a third non-imaging reflector positioned in the focal zone of the secondary reflector. In a system, a receiver is placed in the focal zone of the third reflector. The present arrangement allows for the receiver to be in a fixed position, enhancing the ability of certain variants of the system to generate steam directly in the receiver.Type: ApplicationFiled: December 29, 2003Publication date: July 22, 2004Inventors: Gilbert E. Cohen, Roland Winston
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Publication number: 20040126730Abstract: An apparatus that includes a lens having a light entrance end forming a recess, a heat sink having an end portion facing the recess, and a light source positioned to transmit light via the recess into the lens. The light source is in thermal communication with the heat sink, which conducts away heat generated by the light source. The apparatus may be used to provide optical radiation at various wavelengths, activating tooth whitening material, and curing dental composite material.Type: ApplicationFiled: September 30, 2003Publication date: July 1, 2004Inventors: George W. Panagotacos, David G. Pelka, Roland Winston
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Publication number: 20040062028Abstract: An optical device for collecting light and selectively outputting or concentrating the light. A layer has an optical index of referaction n1, and top, bottom and side surfaces defining an angel of inclination &phgr;. A back surface spans the top, bottom and side surface. A first layer is coupled to the bottom surface of the layer and has an index of refraction n2. The first layer index n2 causes light input through the back surface of the layer to be preferentially output into the first layer. A second layer is coupled to the bottom of the first layer and selectively causes output of light into ambient.Type: ApplicationFiled: August 14, 2003Publication date: April 1, 2004Applicant: 3M Innovative Properties CompanyInventors: Roland Winston, Robert L. Holman, Benjamin A. Jacobson, Robert M. Emmons, Philip Gleckman
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Patent number: 6676263Abstract: A structure and method for providing a broken symmetry reflector structure for a solar concentrator device. The component of the optical direction vector along the symmetry axis is conserved for all rays propagated through a translationally symmetric optical device. This quantity, referred to as the translational skew invariant, is conserved in rotationally symmetric optical systems. Performance limits for translationally symmetric nonimaging optical devices are derived from the distributions of the translational skew invariant for the optical source and for the target to which flux is to be transferred. A numerically optimized non-tracking solar concentrator utilizing symmetry-breaking reflector structures can overcome the performance limits associated with translational symmetry.Type: GrantFiled: August 1, 2002Date of Patent: January 13, 2004Assignee: The University of ChicagoInventor: Roland Winston