Patents by Inventor Biljana Tadic-Galeb
Biljana Tadic-Galeb 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: 7554737Abstract: Systems and methods for providing illumination suitable for imaging devices such as laser projection systems, wherein the illumination pattern is adjustable by modifying one or more characteristics of a controlled angle diffuser. In one embodiment, a highly collimated (e.g., laser light) beam is passed through a holographic diffuser to create a well defined cone angle for the light emanating from each point on the diffuser. This light is focused into an illumination image that is controlled by the prescription of the diffuser. In one embodiment, the diffuser can be positioned to alternately place different regions having different prescriptions in the optical path corresponding to the illumination image. In one embodiment, the diffuser can be continually moved to eliminate speckling and “worminess” in the illumination image.Type: GrantFiled: March 7, 2005Date of Patent: June 30, 2009Assignee: Riake CorporationInventors: Richard M. Knox, Kevin Hathaway, David Kappel, Robert E. Fischer, Biljana Tadic-Galeb
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Publication number: 20060291020Abstract: Systems and methods for providing illumination suitable for imaging devices such as laser projection systems, wherein the illumination pattern is adjustable by modifying one or more characteristics of a controlled angle diffuser. In one embodiment, a highly collimated (e.g., laser light) beam is passed through a holographic diffuser to create a well defined cone angle for the light emanating from each point on the diffuser. This light is focused into an illumination image that is controlled by the prescription of the diffuser. In one embodiment, the diffuser can be positioned to alternately place different regions having different prescriptions in the optical path corresponding to the illumination image. In one embodiment, the diffuser can be continually moved to eliminate speckling and “worminess” in the illumination image.Type: ApplicationFiled: March 7, 2005Publication date: December 28, 2006Inventors: Richard Knox, Kevin Hathaway, David Kappel, Robert Fischer, Biljana Tadic-Galeb
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Patent number: 7035017Abstract: A projection lens system which includes a telecentric lens assembly. The lens may be used to form an image from a light source, including for example a resonant microcavity phosphororcathode ray tube, onto a screen or display, such as in a television or a projection device. In accordance with one embodiment, a planar cooling gap or cavity (which may or may not contain a cooling liquid) is included between the imaging surface and the matching planar surface of the field lens. The use of a planar gap alleviates any temperature differentials across the cooling liquid and the lens surfaces, as compared with alternate designs that may have a non-planar gap between the faceplate and the field lens, or that use liquid lenses.Type: GrantFiled: April 16, 2004Date of Patent: April 25, 2006Assignee: Quantum Vision, Inc.Inventors: Biljana Tadic-Galeb, Robert E. Fischer, Larry D. Owen
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Publication number: 20060050401Abstract: A projection lens system which includes a telecentric lens assembly. The lens may be used to form an image from a light source, including for example a resonant microcavity phosphor or cathode ray tube, onto a screen or display, such as in a television or a projection device. In accordance with one embodiment, a planar cooling gap or cavity (which may or may not contain a cooling liquid) is included between the imaging surface and the matching planar surface of the field lens. The use of a planar gap alleviates any temperature differentials across the cooling liquid and the lens surfaces, as compared with alternate designs that may have a non-planar gap between the faceplate and the field lens, or that use liquid lenses.Type: ApplicationFiled: October 28, 2005Publication date: March 9, 2006Applicant: Quantum Vision, Inc.Inventors: Biljana Tadic-Galeb, Robert Fischer, Larry Owen
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Patent number: 6870650Abstract: Systems and methods for providing illumination suitable for imaging devices such as laser projection systems. In one embodiment, a highly collimated (e.g., laser light) beam is passed through a holographic diffuser to create a well defined cone angle for the light emanating from each point on the diffuser. This light is focused into an illumination image that is controlled by the prescription of the diffuser. In one embodiment, the image is a uniformly intense rectangle having a 4:3 aspect ratio to match an imager for a projection display. The diffuser prescription and resulting illumination image can be selected to match any desired imager. The present systems and methods may provide the advantages of high level of light efficiency, reduction or elimination of speckle and “worminess” and reduction or elimination of cosine4 and gaussian intensity falloff, all of which are common in prior art designs.Type: GrantFiled: June 4, 2003Date of Patent: March 22, 2005Assignee: Riake CorporationInventors: David Kappel, Robert E. Fischer, Biljana Tadic-Galeb
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Publication number: 20040233540Abstract: A projection lens system which includes a telecentric lens assembly. The lens may be used to form an image from a light source, including for example a resonant microcavity phosphororcathode ray tube, onto a screen or display, such as in a television or a projection device. In accordance with one embodiment, a planar cooling gap or cavity (which may or may not contain a cooling liquid) is included between the imaging surface and the matching planar surface of the field lens. The use of a planar gap alleviates any temperature differentials across the cooling liquid and the lens surfaces, as compared with alternate designs that may have a non-planar gap between the faceplate and the field lens, or that use liquid lenses.Type: ApplicationFiled: April 16, 2004Publication date: November 25, 2004Applicant: QUANTUM VISION, INC.Inventors: Biljana Tadic-Galeb, Robert E. Fischer, Larry D. Owen
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Publication number: 20040008392Abstract: Systems and methods for providing illumination suitable for imaging devices such as laser projection systems. In one embodiment, a highly collimated (e.g., laser light) beam is passed through a holographic diffuser to create a well defined cone angle for the light emanating from each point on the diffuser. This light is focused into an illumination image that is controlled by the prescription of the diffuser. In one embodiment, the image is a uniformly intense rectangle having a 4:3 aspect ratio to match an imager for a projection display. The diffuser prescription and resulting illumination image can be selected to match any desired imager. The present systems and methods may provide the advantages of high level of light efficiency, reduction or elimination of speckle and “worminess” and reduction or elimination of cosine4 and gaussian intensity falloff, all of which are common in prior art designs.Type: ApplicationFiled: June 4, 2003Publication date: January 15, 2004Inventors: David Kappel, Robert E. Fischer, Biljana Tadic-Galeb
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Patent number: 6606173Abstract: Systems and methods for providing illumination suitable for imaging devices such as laser projection systems. In one embodiment, a highly collimated (e.g., laser light) beam is passed through a holographic diffuser to create a well defined cone angle for the light emanating from each point on the diffuser. This light is focused into an illumination image that is controlled by the prescription of the diffuser. In one embodiment, the image is a uniformly intense rectangle having a 4:3 aspect ratio to match an imager for a projection display. The diffuser prescription and resulting illumination image can be selected to match any desired imager. The present systems and methods may provide the advantages of high level of light efficiency, reduction or elimination of speckle and worminess and reduction or elimination of cosine4 and gaussian intensity falloff, all of which are common in prior art designs.Type: GrantFiled: July 31, 2001Date of Patent: August 12, 2003Assignee: Riake CorporationInventors: David Kappel, Robert E. Fischer, Biljana Tadic-Galeb
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Patent number: 6473236Abstract: Projection lenses and projection lens systems are telecentric between an illumination subsystem and a set of imagers. The lenses and systems can exhibit color fringing correction, uniform imager illumination, athermalization, and component articulation for improved imaging. The lenses and systems may be employed in display apparatuses, such as folded display apparatuses that have decreased footprint size, but long effective projection lengths.Type: GrantFiled: January 19, 2001Date of Patent: October 29, 2002Assignee: Duke UniversityInventors: Biljana Tadic-Galeb, Robert E. Fischer
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Publication number: 20020075460Abstract: Systems and methods for providing illumination suitable for imaging devices such as laser projection systems. In one embodiment, a highly collimated (e.g., laser light) beam is passed through a holographic diffuser to create a well defined cone angle for the light emanating from each point on the diffuser. This light is focused into an illumination image that is controlled by the prescription of the diffuser. In one embodiment, the image is a uniformly intense rectangle having a 4:3 aspect ratio to match an imager for a projection display. The diffuser prescription and resulting illumination image can be selected to match any desired imager. The present systems and methods may provide the advantages of high level of light efficiency, reduction or elimination of speckle and worminess and reduction or elimination of cosine4 and gaussian intensity falloff, all of which are common in prior art designs.Type: ApplicationFiled: July 31, 2001Publication date: June 20, 2002Inventors: David Kappel, Robert E. Fischer, Biljana Tadic-Galeb
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Patent number: 6396616Abstract: A laser imaging system for direct imaging with high optical power density a series of pixels forming an image on a media surface, The laser imaging system includes a laser light source, wherein the laser light source emits a laser beam representative of the image on the media surface. An optical path is defined between the laser light source and the media surface. A scanner is provided having a mirrored surface positioned along the optical path. An optical assembly is positioned along the optical path for shaping and focusing the laser beam at the media surface, including an F-Theta lens assembly positioned along the optical path between the scanner and the media surface. The F-Theta lens assembly includes a spheric lens, an aspheric lens and a toric lens, providing an increase in optical power density at the media surface.Type: GrantFiled: October 10, 2000Date of Patent: May 28, 2002Assignee: 3M Innovative Properties CompanyInventors: Robert C. Fitzer, Hung Thien Tran, Biljana Tadic-Galeb, Sherman L. Bartz, Donald C. Grillo
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Patent number: 6362922Abstract: Projection lenses and projection lens systems are telecentric between an illumination subsystem and a set of imagers. The lenses and systems can exhibit color fringing correction, uniform imager illumination, athermalization, and component articulation for improved imaging. The lenses and systems may be employed in display apparatuses, such as folded display apparatuses that have decreased footprint size, but long effective projection lengths.Type: GrantFiled: April 24, 2001Date of Patent: March 26, 2002Assignee: Compaq Computer CorportionInventors: Biljana Tadic-Galeb, Robert E. Fischer, David Kappel, Neil L. Condra, Ann M. Muscato, Sean M. Donnelly
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Publication number: 20010019454Abstract: Projection lenses and projection lens systems are telecentric between an illumination subsystem and a set of imagers. The lenses and systems can exhibit color fringing correction, uniform imager illumination, athermalization, and component articulation for improved imaging. The lenses and systems may be employed in display apparatuses, such as folded display apparatuses that have decreased footprint size, but long effective projection lengths.Type: ApplicationFiled: April 24, 2001Publication date: September 6, 2001Inventors: Biljana Tadic-Galeb, Robert E. Fischer, David Kappel, Neil L. Condra, Ann M. Muscato, Sean M. Donnelly
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Patent number: 6280035Abstract: Projection lenses and projection lens systems are telecentric between an illumination subsystem and a set of imagers. The lenses and systems can exhibit color fringing correction, uniform imager illumination, athermalization, and component articulation for improved imaging. The lenses and systems may be employed in displays, such as folded displays that have decreased footprint size, but long effective projection lengths.Type: GrantFiled: October 23, 1998Date of Patent: August 28, 2001Assignee: Duke UniversityInventors: Biljana Tadic-Galeb, Robert E. Fischer, Neil L. Condra
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Publication number: 20010013977Abstract: Projection lenses and projection lens systems are telecentric between an illumination subsystem and a set of imagers. The lenses and systems can exhibit color fringing correction, uniform imager illumination, athermalization, and component articulation for improved imaging. The lenses and systems may be employed in display apparatuses, such as folded display apparatuses that have decreased footprint size, but long effective projection lengths.Type: ApplicationFiled: January 19, 2001Publication date: August 16, 2001Inventors: Biljana Tadic-Galeb, Robert E. Fischer
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Patent number: 6239917Abstract: Projection lenses and projection lens systems are telecentric between an illumination subsystem and a set of imagers. The lenses and systems can exhibit color fringing correction, uniform imager illumination, athermalization, and component articulation for improved imaging. The lenses and systems may be employed in display apparatuses, such as folded display apparatuses that have decreased footprint size, but long effective projection lengths.Type: GrantFiled: October 23, 1998Date of Patent: May 29, 2001Assignee: Duke UniversityInventors: Biljana Tadic-Galeb, Robert E. Fischer
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Patent number: 6220713Abstract: Projection lenses and projection lens systems are telecentric between an illumination subsystem and a set of imagers. The lenses and systems can exhibit color fringing correction, uniform imager illumination, athermalization, and component articulation for improved imaging. The lenses and systems may be employed in display apparatuses, such as folded display apparatuses that have decreased footprint size, but long effective projection lengths.Type: GrantFiled: October 23, 1998Date of Patent: April 24, 2001Assignee: Compaq Computer CorporationInventors: Biljana Tadic-Galeb, Robert E. Fischer, David Kappel, Neil L. Condra, Ann M. Muscato, Sean M. Donnelly
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Patent number: 6185041Abstract: Projection lenses and projection lens systems are telecentric between an illumination subsystem and a set of imagers. The lenses and systems can exhibit color fringing correction, uniform imager illumination, athermalization, and component articulation for improved imaging. The lenses and systems may be employed in display apparatuses, such as folded display apparatuses that have decreased footprint size, but long effective projection lengths.Type: GrantFiled: October 23, 1998Date of Patent: February 6, 2001Assignee: Duke UniversityInventors: Biljana Tadic-Galeb, Robert E. Fischer
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Patent number: 6172816Abstract: Projection lenses and projection lens systems are telecentric between an illumination subsystem and a set of imagers. The lenses and systems can exhibit color fringing correction, uniform imager illumination, athermalization, and component articulation for improved imaging. The lenses and systems may be employed in display apparatuses, such as folded display apparatuses that have decreased footprint size, but long effective projection lengths.Type: GrantFiled: October 23, 1998Date of Patent: January 9, 2001Assignee: Duke UniversityInventors: Biljana Tadic-Galeb, Robert E. Fischer, Robert M. Merritt
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Patent number: 6172813Abstract: Projection lenses and projection lens systems are telecentric between an illumination subsystem and a set of imagers. The lenses and systems can exhibit color fringing correction, uniform imager illumination, athermalization, and component articulation for improved imaging. The lenses and systems may be employed in display apparatuses, such as folded display apparatuses that have decreased footprint size, but long effective projection lengths.Type: GrantFiled: October 23, 1998Date of Patent: January 9, 2001Assignee: Duke UniversityInventors: Biljana Tadic-Galeb, Robert E. Fischer, Robert M. Merritt, Neil L. Condra, Dale S. Walker