Patents by Inventor Jeffrey Gohman
Jeffrey Gohman 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: 7768715Abstract: A lens system for forming a final image of an object, said system having an object side and an image side and forming a first intermediate real image between the object and final image, said system comprising a moving lens group containing the intermediate real image as the magnification of the final image is changed. The lens system is configured as a whole system so that optical aberrations at the intermediate real image, including field curvature, focus, astigmatism, distortion and color separation, are allowed to be of substantially greater magnitude than the corresponding optical aberrations of the final image.Type: GrantFiled: February 21, 2008Date of Patent: August 3, 2010Assignee: Theia Technologies, LLCInventors: Jeffrey A. Gohman, Mark D. Peterson
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Patent number: 7520622Abstract: An apparatus for a display dock with an integrated display screen are disclosed herein.Type: GrantFiled: December 2, 2005Date of Patent: April 21, 2009Assignee: Infocus CorporationInventor: Jeffrey A. Gohman
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Publication number: 20080198451Abstract: A lens system for forming a final image of an object, said system having an object side and an image side and forming a first intermediate real image between the object and final image, said system comprising a moving lens group containing the intermediate real image as the magnification of the final image is changed. The lens system is configured as a whole system so that optical aberrations at the intermediate real image, including field curvature, focus, astigmatism, distortion and color separation, are allowed to be of substantially greater magnitude than the corresponding optical aberrations of the final image.Type: ApplicationFiled: February 21, 2008Publication date: August 21, 2008Applicant: THEIA TECHNOLOGIES, LLCInventors: Jeffrey A. Gohman, Mark D. Peterson
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Patent number: 7413312Abstract: A projection system. The projection system includes a projector, a projector holder, and, optionally, a screen. When included, the screen has at least a deployed configuration in which a viewing portion of the screen is substantially planar. The projector includes a wide-angle lens system to selectively project display images onto the projection screen or other viewing surface. The projector holder supports the projector and is moveable relative to the projection screen or other viewing surface. The projector holder has at least an operating position at which the projector is supported for projection onto the projection screen or other viewing surface.Type: GrantFiled: August 9, 2006Date of Patent: August 19, 2008Assignee: InFocus CorporationInventors: T. Scott Engle, Jeffrey A. Gohman
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Patent number: 7384154Abstract: A temperature control system and method for projection device lenses. The temperature control system includes a controllable heater for selectively heating one or more lenses pad a controller for adjusting heat from the heat source responsive to an operating condition.Type: GrantFiled: March 10, 2005Date of Patent: June 10, 2008Assignee: InFocus CorporationInventors: Jeffrey A. Gohman, Don Rhodes
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Patent number: 7375772Abstract: A system including a light source, a polarizing beam splitter, and first, second and third light valves is provided. The light source produces light in first, second and third wavebands in a second polarization direction. The beam splitter transmits the first waveband of light in a first polarization direction and the second and third wavebands of light in the second polarization direction. The first, second and third light valves reflect at least a portion of the respective first, second and third wavelength bands of light generally toward a projection lens.Type: GrantFiled: April 3, 2006Date of Patent: May 20, 2008Assignee: Straight Signals LLCInventors: Kurt Stahl, Jeffrey A. Gohman
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Patent number: 7347559Abstract: Methods and apparatuses for use in image projecting are provided. One apparatus includes a transflective polarizing beam splitter, a plurality of reflective liquid crystal light valves, and a spectrally selective output device. The beam splitter is capable of receiving the wavelength bands of light and transmitting at least one wavelength band of light having a first polarization direction, and reflecting other wavelength bands of light having a second polarization direction. The light valves are capable of selectively reflecting at least portions of respective wavelength bands of lights. The spectrally selective output device is capable of receiving at least one of the portions of the wavelength band of light and changing the polarization of the portion of the first wavelength of light.Type: GrantFiled: August 31, 2006Date of Patent: March 25, 2008Assignee: Straight Signals LLCInventors: Kurt Stahl, Jeffrey A. Gohman
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Patent number: 7310185Abstract: A display device is disclosed, wherein the display device comprises a light source configured to emit light, a projection lens configured to transfer the light to a display surface, at least one other optical element, and a lens disposed optically between the light source and the projection lens, wherein the lens is configured to enable a first transfer of the light from the light source to the at least one other optical element, and the lens is configured to enable a second transfer of the light from the at least one other optical element to the projection lens.Type: GrantFiled: March 22, 2006Date of Patent: December 18, 2007Assignee: InFocus CorporationInventor: Jeffrey A. Gohman
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Publication number: 20070223113Abstract: A display device is disclosed, wherein the display device comprises a light source configured to emit light, a projection lens configured to transfer the light to a display surface, at least one other optical element, and a lens disposed optically between the light source and the projection lens, wherein the lens is configured to enable a first transfer of the light from the light source to the at least one other optical element, and the lens is configured to enable a second transfer of the light from the at least one other optical element to the projection lens.Type: ApplicationFiled: March 22, 2006Publication date: September 27, 2007Inventor: Jeffrey Gohman
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Patent number: 7259912Abstract: A display device for displaying images in a rear projection display device is provided. The display device may include, amongst other structure, a screen including a lens portion and a frame portion. A tensioner may be operatively associated with the screen and may be adapted to adjust the frame portion to maintain a predetermined tautness in the lens portion.Type: GrantFiled: January 6, 2004Date of Patent: August 21, 2007Assignee: InFocus CorporationInventors: Jeffrey A. Gohman, T. Scott Engle, David Slobodin
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Publication number: 20070146652Abstract: A front projection display device is provided including an image-generating source configured to generate an image, a wide angle lens system adapted to receive the image, and a screen. The wide angle lens system may be configured to increase distortion of the image in a first stage and decrease distortion of the image in a second stage. The screen may be configured to receive the image from the wide angle lens system on a first side and reflect the image back to a viewer on the first side. In another embodiment, a screen is provided for a front projection system, the screen may be configured to receive light from a steep angle and may include any number of surface topographies configured to reflect light back to the viewer along a desired viewing plane.Type: ApplicationFiled: December 15, 2006Publication date: June 28, 2007Applicant: Infocus CorporationInventors: Mark Peterson, T. Engle, Jeffrey Gohman
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Publication number: 20070126988Abstract: An apparatus for a display dock with an integrated display screen are disclosed herein.Type: ApplicationFiled: December 2, 2005Publication date: June 7, 2007Inventor: Jeffrey Gohman
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Publication number: 20070035700Abstract: An image projector (8, 68) includes a light source (14) that illuminates a three-path reflective LCD assembly (25, 74) that produces images for projection by a projection lens (27). The light source produces S-polarized light rays that are received by a spectrally selective wave plate (36) that changes a first wavelength range of light to P-polarized light rays (34) and transmits without polarization change second and third wavelength ranges of light. A plate-type transflective polarizing beam splitter (40) transmits the P-polarized first wavelength range light rays and reflects S-polarized second and third wavelength range light rays (34). The P-polarized first wavelength range light rays transmit through a field lens (421) and impinge on a first reflective LCD light valve (261).Type: ApplicationFiled: August 31, 2006Publication date: February 15, 2007Inventors: Kurt Stahl, Jeffrey Gohman
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Patent number: 7175287Abstract: A projection display device is provided. The projection display device may include an image generation device configured to generate an image and a wide angle lens system having an optical axis configured to receive the image and project the image along an optical path for display above the display device. The projection display device further may include direction changing optics configured to fold the optical path such that the optical path changes direction from a first direction to a second direction. In some embodiments, the image generation device may be positioned below the optical axis of the wide angle lens system.Type: GrantFiled: April 15, 2004Date of Patent: February 13, 2007Assignee: InFocus CorporationInventor: Jeffrey A. Gohman
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Publication number: 20070014005Abstract: A rear projection display device is provided. In an embodiment, the display device includes a laminate screen including a microstructure lamina having a non-planar input surface, a substantially planar output surface and a first index of refraction. The laminate screen further may include a diffusion screen lamina having a substantially planar input surface, an output surface and a second index of refraction. The diffusion screen lamina may be in optical communication with the microstructure lamina. Moreover, the planar output surface of the microstructure lamina and the planar input surface of the diffusion screen lamina may be in facing relationship.Type: ApplicationFiled: August 7, 2006Publication date: January 18, 2007Applicant: INFOCUS CORPORATIONInventors: Mark Peterson, Jeffrey Gohman
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Publication number: 20060290897Abstract: A projection system. The projection system includes a projector, a projector holder, and, optionally, a screen. When included, the screen has at least a deployed configuration in which a viewing portion of the screen is substantially planar. The projector includes a wide-angle lens system to selectively project display images onto the projection screen or other viewing surface. The projector holder supports the projector and is moveable relative to the projection screen or other viewing surface. The projector holder has at least an operating position at which the projector is supported for projection onto the projection screen or other viewing surface.Type: ApplicationFiled: August 9, 2006Publication date: December 28, 2006Applicant: INFOCUS CORPORATIONInventors: T. Engle, Jeffrey Gohman
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Publication number: 20060274284Abstract: Embodiments of apparatuses, articles, methods, and systems for illumination arrangements for combining light paths of colored light sources are generally described herein. Other embodiments may be described and claimed.Type: ApplicationFiled: May 31, 2006Publication date: December 7, 2006Applicant: InFocus CorporationInventors: Mark Peterson, Jeffrey Gohman
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Publication number: 20060245055Abstract: A Fresnel lens. The Fresnel lens includes an input side configured to receive the image and an output side, opposite the input side, configured to display the image. The input side includes a first facet angled to receive input light constituting at least a portion of the image. The input side also includes a second facet at least partially facing the first facet and a third facet linking the first facet to the second facet, wherein the third facet and the output side are substantially parallel.Type: ApplicationFiled: July 12, 2006Publication date: November 2, 2006Applicant: INFOCUS CORPORATIONInventors: Mark Peterson, Jeffrey Gohman
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Publication number: 20060238665Abstract: An image projector (8, 68) includes a light source (14) that illuminates a three-path reflective LCD assembly (25, 74) that produces images for projection by a projection lens (27). The light source produces S-polarized light rays that are received by a spectrally selective wave plate (36) that changes a first wavelength range of light to P-polarized light rays (34) and transmits without polarization change second and third wavelength ranges of light. A plate-type transflective polarizing beam splitter (40) transmits the P-polarized first wavelength range light rays and reflects S-polarized second and third wavelength range light rays (34). The P-polarized first wavelength range light rays transmit through a field lens (421) and impinge on a first reflective LCD light valve (261).Type: ApplicationFiled: April 3, 2006Publication date: October 26, 2006Inventors: Kurt Stahl, Jeffrey Gohman
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Publication number: 20060203362Abstract: An optical system for use in a projection device is described in which temperature control may be performed on a lens or mirror.Type: ApplicationFiled: March 10, 2005Publication date: September 14, 2006Inventors: Jeffrey Gohman, Don Rhodes