Patents by Inventor Angus Wu
Angus Wu 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: 11899241Abstract: Disclosed is an Augmented Reality (AR) optical waveguide. The AR optical waveguide includes a transparent substrate including a user proximate surface and a user distal surface. The AR optical waveguide also includes a slant etched diffractive grating included on the user distal surface of the transparent substrate. The slant etched diffractive grating includes a refractive index of greater than or equal to 2.0.Type: GrantFiled: March 4, 2021Date of Patent: February 13, 2024Assignee: Huawei Technologies Co., Ltd.Inventors: Gangok Lee, Zhiqiang Liu, Wei Zhou, Akash Arora, Angus Wu
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Publication number: 20220026722Abstract: A near-eye display (NED), comprising a frame comprising an outer lens, a micro-display panel coupled to the frame and comprising a processor configured to process content for display to a user wearing the NED, an augmented reality (AR) lens comprising a main prism lens, wherein the outer lens comprises at least one of a display corrector lens or a see-through corrector lens.Type: ApplicationFiled: October 8, 2021Publication date: January 27, 2022Inventors: Zhiqiang Liu, Akash Arora, Jie Dai, Angus Wu, Jiang Li, Peng Zhang, Gangok Lee
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Publication number: 20220011583Abstract: A near-eye display (NED), comprising an augmented reality (AR) lens comprising a main prism lens and a see-through corrector lens, wherein the AR lens comprises a bottom edge that tapers toward a blunt tip, and a micro-display panel coupled to the AR lens and comprising a processor configured to process content for display to a user wearing the NED, and a display coupled to the processor and configured to project the content to the AR lens.Type: ApplicationFiled: September 24, 2021Publication date: January 13, 2022Inventors: Zhiqiang Liu, Angus Wu, Jiang Li, Zhang Peng, Akash Arora
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Publication number: 20210191040Abstract: Disclosed is an Augmented Reality (AR) optical waveguide. The AR optical waveguide includes a transparent substrate including a user proximate surface and a user distal surface. The AR optical waveguide also includes a slant etched diffractive grating included on the user distal surface of the transparent substrate. The slant etched diffractive grating includes a refractive index of greater than or equal to 2.0.Type: ApplicationFiled: March 4, 2021Publication date: June 24, 2021Inventors: Gangok Lee, Zhiqiang Liu, Wei Zhou, Akash Arora, Angus Wu
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Patent number: 10989923Abstract: A near eye display includes a main freeform prism lens and a micro-display corrector lens, where the main freeform prism lens includes a first freeform surface, a second freeform surface, and a third freeform surface, the first freeform surface refracting a light from a micro-display into a body of the main freeform prism lens, and the main freeform prism lens having an exit pupil diameter greater than 12 millimeter (mm), and a lateral color aberration of less than 4 micrometer (um)) across a diagonal field of view (FOV), where the micro-display corrector lens is positioned between the main freeform prism lens and the micro-display, the micro-display corrector lens including a first corrector lens surface and a second corrector lens surface, and each surface of the main freeform prism lens and the micro-display corrector lens comprises a surface sag.Type: GrantFiled: June 13, 2018Date of Patent: April 27, 2021Assignee: Futurewei Technologies, Inc.Inventors: Akash Arora, Mingwei Hsu, Gangok Lee, Zhiqiang Liu, Angus Wu, Wei Zhou
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Publication number: 20190384061Abstract: A near eye display includes a main freeform prism lens and a micro-display corrector lens, where the main freeform prism lens includes a first freeform surface, a second freeform surface, and a third freeform surface, the first freeform surface refracting a light from a micro-display into a body of the main freeform prism lens, and the main freeform prism lens having an exit pupil diameter greater than 12 millimeter (mm), and a lateral color aberration of less than 4 micrometer (um)) across a diagonal field of view (FOV), where the micro-display corrector lens is positioned between the main freeform prism lens and the micro-display, the micro-display corrector lens including a first corrector lens surface and a second corrector lens surface, and each surface of the main freeform prism lens and the micro-display corrector lens comprises a surface sag.Type: ApplicationFiled: June 13, 2018Publication date: December 19, 2019Inventors: Akash Arora, Mingwei Hsu, Gangok Lee, Zhiqiang Liu, Angus Wu, Wei Zhou
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Patent number: 10088689Abstract: An optical light engine includes a pair of lenticular microlenslet arrays (MLAs) located on each side of a polarization converter. Non-polarized light from a source in the engine is focused by the first MLA onto cells of the polarization converter which converts the light to a common state of polarization to increase efficiency and improve contrast in the system. A half wave retarder is included on the polarization converter to change the polarization of any light that is reflected from downstream optical components to match that of the forward propagating light. The second MLA, which includes a relatively large number of microlenslet elements, collects the light from the polarization converter and homogenizes the light to be highly uniform when received at a downstream imaging panel in the light engine such as a liquid crystal on silicon (LCOS) panel.Type: GrantFiled: March 13, 2015Date of Patent: October 2, 2018Assignee: MICROSOFT TECHNOLOGY LICENSING, LLCInventors: Yarn Chee Poon, Steve Robbins, Angus Wu, Jeb Wu, James Webster, Richard Andrew Wall, Richard James, Robin Hsiung, RuPing Huang, Freeway Lin
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Patent number: 9720237Abstract: An optical device comprises a number of waveguides, e.g., color plates, that are individually formed to couple a corresponding color output of a micro-display engine and project an image into a human vision system. Some configurations include stacked structures for suppressing a predetermined wavelength range a corresponding to a wavelength range emitted from a waveguide. Techniques, devices, and systems disclosed herein can mitigate cross coupling that occurs between the waveguides to provide enhanced MTF values over devices that do not include the stacked structures. Individual optical devices configured to suppress a predetermined wavelength range are also provided.Type: GrantFiled: January 27, 2016Date of Patent: August 1, 2017Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC.Inventors: Yijing Fu, Angus Wu, Gangok Lee, Mingwei Hsu
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Publication number: 20170212348Abstract: An optical device comprises a number of waveguides, e.g., color plates, that are individually formed to couple a corresponding color output of a micro-display engine and project an image into a human vision system. Some configurations include stacked structures for suppressing a predetermined wavelength range a corresponding to a wavelength range emitted from a waveguide. Techniques, devices, and systems disclosed herein can mitigate cross coupling that occurs between the waveguides to provide enhanced MTF values over devices that do not include the stacked structures. Individual optical devices configured to suppress a predetermined wavelength range are also provided.Type: ApplicationFiled: January 27, 2016Publication date: July 27, 2017Inventors: Yijing Fu, Angus Wu, Gangok Lee, Mingwei Hsu
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Publication number: 20160266398Abstract: An optical light engine includes a pair of lenticular microlenslet arrays (MLAs) located on each side of a polarization converter. Non-polarized light from a source in the engine is focused by the first MLA onto cells of the polarization converter which converts the light to a common state of polarization to increase efficiency and improve contrast in the system. A half wave retarder is included on the polarization converter to change the polarization of any light that is reflected from downstream optical components to match that of the forward propagating light. The second MLA, which includes a relatively large number of microlenslet elements, collects the light from the polarization converter and homogenizes the light to be highly uniform when received at a downstream imaging panel in the light engine such as a liquid crystal on silicon (LCOS) panel.Type: ApplicationFiled: March 13, 2015Publication date: September 15, 2016Inventors: Yarn Chee Poon, Steve Robbins, Angus Wu, Jeb Wu, James Webster, Richard Andrew Wall, Richard James, Robin Hsiung, RuPing Huang, Freeway Lin
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Patent number: 9291756Abstract: Embodiments disclosed herein relate to a filter (100). In one embodiment, the filter includes a pattern (120). The pattern may reflect or fluoresce non-visible light.Type: GrantFiled: January 28, 2011Date of Patent: March 22, 2016Assignee: Hewlett-Packard Development Company, L.P.Inventors: Daniel I. Croft, Barry T Phillips, Brad Benson, Cary G Addington, Angus Wu, Stephan R Clark, Guy Adams, James Stasiak
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Publication number: 20130334441Abstract: Embodiments disclosed herein relate to a filter (100). In one embodiment, the filter includes a pattern (120). The pattern may reflect or fluoresce non-visible light.Type: ApplicationFiled: January 28, 2011Publication date: December 19, 2013Inventors: Daniel I. Croft, Bany T. Phillips, Brad Benson, Cary G. Addington, Angus Wu, Stephan R. Clark, Guy Adams
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Publication number: 20120273041Abstract: Apparatus and methods are provided for use with solar energy. A substrate is defined by a parabolic cross-sectional shape or portion there of. A surface treatment having plural layers of dichroic materials is formed on the substrate. The layers are tapered in thickness, increasing from about a lower edge to about an upper edge. A spectral band of incident photonic energy is concentrated on a target by way of the surface treatment. The spectral band is consistent for a range of angles of incidence to the surface treatment.Type: ApplicationFiled: April 28, 2011Publication date: November 1, 2012Inventor: Angus Wu
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Patent number: 8262201Abstract: In one embodiment, a printing device includes: a print engine configured to apply marking material to print media; a laser writer configured to expose the print media to a laser beam of sufficient energy to change the reflectivity of exposed portions of the print media; a media path along which the print engine may apply marking material to print media in a macro printing zone and along which the print media may be exposed to a beam of light emitted by the laser writer in a micro printing zone; and an electronic controller operatively connected to the print engine for selectively applying marking material to the print media and to the laser writer for selectively exposing the print media to a laser beam.Type: GrantFiled: April 10, 2007Date of Patent: September 11, 2012Assignee: Hewlett-Packard Development Company, L.P.Inventors: Andrew L. Van Brocklin, Kuohua (Angus) Wu, Alok Sharan, Vladek Kasperchik
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Patent number: 8126141Abstract: Embodiments of interferometric communication are disclosed.Type: GrantFiled: February 21, 2007Date of Patent: February 28, 2012Assignee: Hewlett-Packard Development Company, L.P.Inventors: Kuohua (Angus) Wu, Andrew L. Van Brocklin
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Patent number: 7963676Abstract: A reflector window includes a light transmission window having a center and an outer edge and an optical coating of at least first and second materials having differing refractive indices deposited on a proximate side of the light transmission window. The optical coating includes a plurality of alternating layers of the first and second materials with each layer having a thickness which increases from the center to the outer edge of the light transmission window.Type: GrantFiled: October 23, 2006Date of Patent: June 21, 2011Inventor: Kuohua (Angus) Wu
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Patent number: 7889220Abstract: A system and method are provided for maintaining optical energy density on a defined area of a medium markable by optical energy. The method includes the operation of directing a light beam from a light source to an optical system. The light beam can pass through at least one optical component in the optical system, where the optical system has astigmatic properties selected to maintain desired irradiance within the defined area of the medium through a range of working distances between the optical system and the defined area. A further operation is guiding the light beam by the optical system onto the marking area of the medium.Type: GrantFiled: October 31, 2006Date of Patent: February 15, 2011Assignee: Hewlett-Packard Development Company, L.P.Inventors: Andrew L. Van Brocklin, Kuohua (Angus) Wu
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Patent number: 7742225Abstract: A reflector for a projector includes a metal reflector that defines an optical surface. An absorptive surface is disposed on the optical surface. A layer of germanium is disposed on the absorptive surface. A band-pass reflective surface is further disposed on the absorptive surface.Type: GrantFiled: July 6, 2005Date of Patent: June 22, 2010Assignee: Hewlett-Packard Development Company, L.P.Inventors: Angus Wu, Anurag Gupta, P. Guy Howard, John M. Koegler, III
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Patent number: 7576860Abstract: A light filter includes exactly one partially reflective layer having a top and a bottom and a wedge-shaped profile defining a wedge direction. First and second transparent layers are disposed on the top and bottom, respectively, of the partially reflective layer, each transparent layer including at least two dielectric layers of two different materials, each dielectric layer having a wedge-shaped profile oriented in the wedge direction. A photospectrometer including a light filter with the wedge-shaped profile is also disclosed.Type: GrantFiled: May 11, 2007Date of Patent: August 18, 2009Assignee: Hewlett-Packard Development Company, L.P.Inventors: Kuohua (Angus) Wu, David L Erickson
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Publication number: 20080285165Abstract: Various embodiments of a system and method for producing a thin film filter are disclosed.Type: ApplicationFiled: May 14, 2007Publication date: November 20, 2008Inventors: Kuohua (Angus) Wu, Al Davis, David L. Erickson