Patents by Inventor Kuohua Wu

Kuohua 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).

  • Patent number: 7830075
    Abstract: A cool light source includes a reflector having a band-reject reflective coating and an underlying absorptive coating. The cool light source also includes a window with a band-pass transmission function that is substantially complimentary to the band-reject reflective coating.
    Type: Grant
    Filed: October 28, 2005
    Date of Patent: November 9, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Kuohua Wu
  • Patent number: 7696589
    Abstract: Embodiments of an optical device including at least two transparent layers are disclosed.
    Type: Grant
    Filed: January 9, 2009
    Date of Patent: April 13, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Gregory J. May, Kuohua Wu
  • Patent number: 7678438
    Abstract: One embodiment of an optical medium includes a substrate, a data recording layer positioned on the substrate, a selectively transmissive layer positioned on the data recording layer, and a label recording layer positioned on the selectively transmissive layer, the label recording layer optically accessible at only certain wavelengths through the data recording layer and through the selectively transmissive layer.
    Type: Grant
    Filed: October 12, 2005
    Date of Patent: March 16, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Kuohua Wu, Andrew L. Van Brocklin
  • Patent number: 7679820
    Abstract: A infrared (IR) light absorbing reflector is formed with a substrate that supports a first IR absorptive multilayer part having multiple layers of partial IR absorbing thin films. The first IR absorptive multi-layer part supports a second visible light reflecting multilayer part.
    Type: Grant
    Filed: February 11, 2008
    Date of Patent: March 16, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Kuohua Wu, Anurag Gupta
  • Patent number: 7672213
    Abstract: This invention relates to an optical mechanism comprising: an optical beam generating mechanism to generate an optical beam; and a unitary, transparent waveguide for guiding the optical beam to an optically writable surface wherein optical elements for guiding the optical beam are coated onto the waveguide to create a relatively compact optical system, a relatively low exit numerical aperture for the exit pupil, and for bending and re-directing the optical beam.
    Type: Grant
    Filed: March 2, 2006
    Date of Patent: March 2, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Andrew L. Van Brocklin, Kuohua Wu
  • Publication number: 20090122399
    Abstract: Embodiments of an optical device including at least two transparent layers are disclosed.
    Type: Application
    Filed: January 9, 2009
    Publication date: May 14, 2009
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Gregory J. May, Kuohua Wu
  • Patent number: 7507002
    Abstract: A method for forming a reflector includes depositing a decoupling material on an ultraviolet light and infra-red light absorption layer that is supported by a substrate which is spun.
    Type: Grant
    Filed: July 1, 2005
    Date of Patent: March 24, 2009
    Assignee: Hewlett Packard Development Company, L.P.
    Inventors: Kurt M. Ulmer, Kuohua Wu
  • Patent number: 7495305
    Abstract: Embodiments of an optical device including at least two transparent layers are disclosed.
    Type: Grant
    Filed: January 11, 2007
    Date of Patent: February 24, 2009
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Gregory J. May, Kuohua Wu
  • Patent number: 7434941
    Abstract: An arc lamp system includes an arc lamp, having a life span, a power supply, and a power control servo. The power supply is electrically coupled to the arc lamp and configured to provide power thereto, and the power control servo is coupled to the power supply, and configured to cause the power supply to provide lower power to the arc lamp at a beginning of the life span, and to provide greater power to the arc lamp toward an end of the life span.
    Type: Grant
    Filed: May 30, 2006
    Date of Patent: October 14, 2008
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Kuohua Wu, Kevin Hulick
  • Publication number: 20080144166
    Abstract: A infrared (IR) light absorbing reflector is formed with a substrate that supports a first IR absorptive multilayer part having multiple layers of partial IR absorbing thin films. The first IR absorptive multi-layer part supports a second visible light reflecting multilayer part.
    Type: Application
    Filed: February 11, 2008
    Publication date: June 19, 2008
    Inventors: Kuohua Wu, Anurag Gupta
  • Patent number: 7376303
    Abstract: An optical coupling assembly includes light transmitting or reflecting members fusion bonded to one another.
    Type: Grant
    Filed: July 20, 2006
    Date of Patent: May 20, 2008
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Chien-Hua Chen, Kuohua Wu, Jeffrey S. Obert
  • Publication number: 20080100915
    Abstract: An oxidation layer is removed from a metal substrate by plasma etching. A titanium adhesion layer is deposited on the metal substrate. A multiple-layer dielectric is deposited on the titanium adhesion layer. The titanium adhesion layer improves adhesion of the multiple-layer dielectric to the metal substrate.
    Type: Application
    Filed: October 27, 2006
    Publication date: May 1, 2008
    Inventors: Kuohua Wu, Andrew L. Van Brocklin
  • Patent number: 7349151
    Abstract: An infrared (IR) light absorbing reflector is formed with a substrate that supports a first IR absorptive multilayer part having multiple layers of partial IR absorbing thin films. The first IR absorptive multi-layer part supports a second visible light reflecting multilayer part.
    Type: Grant
    Filed: July 12, 2005
    Date of Patent: March 25, 2008
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Kuohua Wu, Anurag Gupta
  • Publication number: 20080062242
    Abstract: An optical print head includes a plurality of lasers having laser emissions within a desired wavelength range, a beam splitter and/or a multi-mode optical fiber adapted to receive combined output light from the plurality of lasers and to direct their combined output light in a first beam direction. A holographic or hybrid holographic optical element is adapted to focus the combined output light within the desired wavelength range into a spot with non-Gaussian irradiance on the medium for recording. A sensor may be disposed along a second beam direction to detect modulated light from the medium.
    Type: Application
    Filed: September 12, 2006
    Publication date: March 13, 2008
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Andrew L. Van Brocklin, Kuohua Wu, Vladek P. Kasperchik
  • Publication number: 20080063900
    Abstract: Various embodiments and methods relating to providing constructive interference of light between a reflective layer and an imageable layer are disclosed.
    Type: Application
    Filed: September 11, 2006
    Publication date: March 13, 2008
    Inventor: Kuohua Wu
  • Publication number: 20080062244
    Abstract: Various methods and embodiments for laser writing are disclosed.
    Type: Application
    Filed: September 11, 2006
    Publication date: March 13, 2008
    Inventors: Kuohua Wu, Andrew L. Van Brocklin, Cari L. Dorsh
  • Publication number: 20080019653
    Abstract: An optical coupling assembly includes light transmitting or reflecting members fusion bonded to one another.
    Type: Application
    Filed: July 20, 2006
    Publication date: January 24, 2008
    Inventors: Chien-Hua Chen, Kuohua Wu, Jeffrey S. Obert
  • Publication number: 20070278963
    Abstract: An arc lamp system includes an arc lamp, having a life span, a power supply, and a power control servo. The power supply is electrically coupled to the arc lamp and configured to provide power thereto, and the power control servo is coupled to the power supply, and configured to cause the power supply to provide lower power to the arc lamp at a beginning of the life span, and to provide greater power to the arc lamp toward an end of the life span.
    Type: Application
    Filed: May 30, 2006
    Publication date: December 6, 2007
    Inventors: Kuohua Wu, Kevin Hulick
  • Publication number: 20070279525
    Abstract: A system for increasing component longevity in a display device includes: a display device; a sensor for detecting an audience associated with the display device; and a control subsystem connected to the sensor. The control subsystem is configured to deactivate at least one component of the display device when no audience is detected by the sensor. A method of increasing component longevity includes determining the presence or absence of an audience with respect to a display device; and deactivating at least one component of the display device when the audience associated with the display device is not present.
    Type: Application
    Filed: June 1, 2006
    Publication date: December 6, 2007
    Inventors: Kuohua Wu, David L. Erickson
  • Patent number: 7301879
    Abstract: An optical print head for recording on a medium includes a plurality of lasers having laser emissions within a desired wavelength range, an optical fiber adapted to receive combined light from the plurality of lasers at a first end and to emit combined output light at a second end, and includes a hybrid optical element optically coupled to the second end of the optical fiber and adapted to focus the combined output light within the desired wavelength range on the medium.
    Type: Grant
    Filed: September 12, 2006
    Date of Patent: November 27, 2007
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Andrew L. Van Brocklin, Kuohua Wu, Vladek P. Kasperchik