Patents by Inventor Julio Cesar Chaves
Julio Cesar Chaves 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: 8393777Abstract: Some embodiments provide luminance-preserving non-imaging backlights that comprise a luminous source emitting light, an input port that receives the light, an injector and a beam-expanding ejector. The injector includes the input port and a larger output port with a profile that expands away from the input port acting via total internal reflection to keep x-y angular width of the source image inversely proportional to its luminance. The injector is defined by a surface of revolution with an axis on the source and a swept profile that is a first portion of an upper half of a CPC tilted by its acceptance angle. The beam-expanding ejector comprising a planar waveguide optically coupled to the output port of the injector. The ejector includes a smooth upper surface, and a reflective lower surface comprising microstructured facets that refract upwardly reflected light into a collimated direction common to the facets.Type: GrantFiled: July 28, 2006Date of Patent: March 12, 2013Assignee: Light Prescriptions Innovators, LLCInventors: Juan Carlos Minano, Pablo Benitez, Julio Cesar Chaves, Waqidi Falicoff, William A. Parkyn
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Patent number: 8075147Abstract: An optical device for coupling the luminous output of a light-emitting diode (LED) to a predominantly spherical pattern comprises a transfer section that receives the LED's light within it and an ejector positioned adjacent the transfer section to receive light from the transfer section and spread the light generally spherically. A base of the transfer section is optically aligned and/or coupled to the LED so that the LED's light enters the transfer section. The transfer section can comprises a compound elliptic concentrator operating via total internal reflection. The ejector section can have a variety of shapes, and can have diffusive features on its surface as well, including a phosphor coating. The transfer section can in some implementations be polygonal, V-grooved, faceted and other configurations.Type: GrantFiled: September 12, 2008Date of Patent: December 13, 2011Assignee: Light Prescriptions Innovators, LLCInventors: Julio Cesar Chaves, Juan Carlos Minano, Pablo Benitez, William A. Parkyn, Jr., Waqidi Falicoff, Fernando Munoz, Yupin Sun, Oliver Dross, Roberto Alvarez
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Patent number: 7798675Abstract: The present embodiments provide methods and systems for use in providing enhanced illumination. Some embodiments include at least two light sources and one or more smoothly rotating wheels, where the one or more wheels comprises at least one mirror sector, the circumferential portion of the mirror sector is the inverse of the number of said sources, a first source of the sources is so disposed that the mirror sector reflects light from the first source into a common output path, where the first source pulsing such that a duty cycle of the first source corresponds to a time the mirror sector reflects light from the first source into the common output path.Type: GrantFiled: February 11, 2009Date of Patent: September 21, 2010Assignee: Light Prescriptions Innovators, LLCInventors: Julio Cesar Chaves, Juan Carlos Minano, William A. Parkyn, Jr., Waqidi Falicoff, Pablo Benitez, Roberto Alvarez, Oliver Dross
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Patent number: 7753561Abstract: An optical device for coupling the luminous output of a light-emitting diode (LED) to a predominantly spherical pattern comprises a transfer section that receives the LED's light within it and an ejector positioned adjacent the transfer section to receive light from the transfer section and spread the light generally spherically. A base of the transfer section is optically aligned and/or coupled to the LED so that the LED's light enters the transfer section. The transfer section can comprises a compound elliptic concentrator operating via total internal reflection. The ejector section can have a variety of shapes, and can have diffusive features on its surface as well. The transfer section can in some implementations be polygonal, V-grooved, faceted and other configurations.Type: GrantFiled: January 7, 2008Date of Patent: July 13, 2010Assignee: Light Prescriptions Innovators, LLCInventors: Julio Cesar Chaves, Juan Carlos Minano, Pablo Benitez, William A Parkyn, Jr., Waqidi Falicoff, Fernando Munoz, Yupin Sun
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Publication number: 20100038663Abstract: Some embodiments provide a luminance-enhanced light source. These embodiments include a thin-film LED mounted on a substrate and with a defined upper surface approximately hemispherically emitting light, with the upper surface being diffusely transmissive, a lower first layer of identically defined linear prismatic film separated from the upper surface by a non-evanescent air gap so as to cover the upper surface, a upper second layer of linear prismatic film, identical to but oriented orthogonally to the first layer, and a circumferential vertical reflective wall bordering on both of the first and second layers and extending in height from the substrate to the top of the second layer.Type: ApplicationFiled: February 10, 2009Publication date: February 18, 2010Applicant: LIGHT PRESCRIPTIONS INNOVATORS, LLCInventors: Pablo BENITEZ, Juan Carlos MINANO, Julio Cesar CHAVES, William A. PARKYN, JR., Waqidi FALICOFF
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Publication number: 20100033946Abstract: The present embodiments provide methods and systems for use in providing enhanced illumination. Some embodiments include at least two light sources and one or more smoothly rotating wheels, where the one or more wheels comprises at least one mirror sector, the circumferential portion of the mirror sector is the inverse of the number of said sources, a first source of the sources is so disposed that the mirror sector reflects light from the first source into a common output path, where the first source pulsing such that a duty cycle of the first source corresponds to a time the mirror sector reflects light from the first source into the common output path.Type: ApplicationFiled: February 11, 2009Publication date: February 11, 2010Applicant: LIGHT PRESCRIPTIONS INNOVATORS, LLCInventors: Julio Cesar CHAVES, Juan Carlos MINANO, William A. PARKYN, JR., Waqidi FALICOFF, Pablo BENITEZ, Roberto ALVAREZ, Oliver DROSS
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Publication number: 20090167651Abstract: Some embodiments provide luminance-preserving non-imaging backlights that comprise a luminous source emitting light, an input port that receives the light, an injector and a beam-expanding ejector. The injector includes the input port and a larger output port with a profile that expands away from the input port acting via total internal reflection to keep x-y angular width of the source image inversely proportional to its luminance. The injector is defined by a surface of revolution with an axis on the source and a swept profile that is a first portion of an upper half of a CPC tilted by its acceptance angle. The beam-expanding ejector comprising a planar waveguide optically coupled to the output port of the injector. The ejector includes a smooth upper surface, and a reflective lower surface comprising microstructured facets that refract upwardly reflected light into a collimated direction common to the facets.Type: ApplicationFiled: July 28, 2006Publication date: July 2, 2009Applicant: LIGHT PRESCRIPTIONS INNOVATORS, LLCInventors: Juan Carlos MinaƱo, Pablo Benitez, Julio Cesar Chaves, Waqidi Falicoff, William A. Parkyn
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Publication number: 20090067179Abstract: An optical device for coupling the luminous output of a light-emitting diode (LED) to a predominantly spherical pattern comprises a transfer section that receives the LED's light within it and an ejector positioned adjacent the transfer section to receive light from the transfer section and spread the light generally spherically. A base of the transfer section is optically aligned and/or coupled to the LED so that the LED's light enters the transfer section. The transfer section can comprises a compound elliptic concentrator operating via total internal reflection. The ejector section can have a variety of shapes, and can have diffusive features on its surface as well, including a phosphor coating. The transfer section can in some implementations be polygonal, V-grooved, faceted and other configurations.Type: ApplicationFiled: September 12, 2008Publication date: March 12, 2009Applicant: LIGHT PRESCRIPTIONS INNOVATORS, LLCInventors: Julio Cesar Chaves, Juan Carlos Minano, Pablo Benitez, William A. Parkyn, JR., Waqidi Falicoff, Fernando Munoz, Yupin Sun, Oliver Dross, Roberto Alvarez
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Patent number: 7460985Abstract: The embodiments provide methods for use in designing and/or manufacturing optical systems. Some embodiments further provide for the optical systems generated utilizing the methods for use in designing and/or manufacturing. In some embodiments, a method simultaneously generates first and second sets of span points defining first and second surfaces, respectively, where sets of span points are interdependent. The method curve fits through the first and second sets of span points defining initial first and second spines, smoothes the curve fittings such that tangent vectors are perpendicular to normal vectors, and defines patches of the first and second surfaces relative to the first and second spines. Some embodiments simultaneously generate the first and second sets of span points by alternatively determining the points of the sets based on propagation of input wavefronts and associated output wavefronts relative to previously determined points.Type: GrantFiled: July 28, 2004Date of Patent: December 2, 2008Assignee: Light Prescriptions Innovators, LLCInventors: Pablo Benitez, Juan Carlos Minano, Jose Blen Flores, Maikel Hernandez, Ruben Mohedano Arroyo, Julio Cesar Chaves
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Publication number: 20080123349Abstract: An optical device for coupling the luminous output of a light-emitting diode (LED) to a predominantly spherical pattern comprises a transfer section that receives the LED's light within it and an ejector positioned adjacent the transfer section to receive light from the transfer section and spread the light generally spherically. A base of the transfer section is optically aligned and/or coupled to the LED so that the LED's light enters the transfer section. The transfer section can comprises a compound elliptic concentrator operating via total internal reflection. The ejector section can have a variety of shapes, and can have diffusive features on its surface as well. The transfer section can in some implementations be polygonal, V-grooved, faceted and other configurations.Type: ApplicationFiled: January 7, 2008Publication date: May 29, 2008Applicant: LIGHT PRESCRIPTIONS INNOVATORS, LLCInventors: Julio Cesar Chaves, Juan Carlos Minano, Pablo Benitez, William A. Parkyn, Waqidi Falicoff, Fernando Munoz, Yupin Sun
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Patent number: 7329029Abstract: An optical device for coupling the luminous output of a light-emitting diode (LED) to a predominantly spherical pattern comprises a transfer section that receives the LED's light within it and an ejector positioned adjacent the transfer section to receive light from the transfer section and spread the light generally spherically. A base of the transfer section is optically aligned and/or coupled to the LED so that the LED's light enters the transfer section. The transfer section can comprises a compound elliptic concentrator operating via total internal reflection. The ejector section can have a variety of shapes, and can have diffusive features on its surface as well. The transfer section can in some implementations be polygonal, V-grooved, faceted and other configurations.Type: GrantFiled: March 31, 2004Date of Patent: February 12, 2008Assignee: Light Prescriptions Innovators, LLCInventors: Julio Cesar Chaves, Juan Carlos Minano, Pablo Benitez, William A. Parkyn, Jr., Waqidi Falicoff, Fernando Munoz, Yupin Sun