Patents by Inventor Kanghua Lu

Kanghua Lu 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: 10509224
    Abstract: A head-up display system and method are provided that suppress double images from a combiner by eliminating or reducing a reflection of a refracted image from the back surface of the combiner. The combiner contains a tilted axis polarizing structure that attenuates transmittance and subsequent reflection of a refracted polarized projector image but maintains high transmittance for the forward external scene imagery.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: December 17, 2019
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Brent D. Larson, Kanghua Lu, Elias S. Haim
  • Patent number: 10459224
    Abstract: A system and method of displaying a conformal-capable head-up display image is provided. Distortions caused by combiner curvature, for example, are removed by pre-distorting and projecting separate images for each eye. Shutter-based eyewear controls the visibility as the imagery is cycled, e.g., shuttered, between left and right eyes. The combined image generator, projector and eyewear system maintains minimal vergence errors, minimal dipvergence errors, acceptable average transmittance, and optionally, high conformality.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: October 29, 2019
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Brent D. Larson, Kanghua Lu, Kalluri R. Sarma
  • Patent number: 10180722
    Abstract: Methods and apparatus are provided for a user interface with haptic feedback. The user interface includes a display element configured to display a visual image; a touch screen panel coupled to the display element and configured to receive a user input; a controller coupled to the touch screen panel and configured to generate a feedback signal based on the user input; a first actuator coupled to the controller and the touch screen panel and configured to operate in a first mode based on the feedback signal; and a second actuator coupled to the controller and the touch screen panel and configured to operate in a second mode based on the feedback signal.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: January 15, 2019
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventor: Kanghua Lu
  • Publication number: 20170199380
    Abstract: A head-up display system and method are provided that suppress double images from a combiner by eliminating or reducing a reflection of a refracted image from the back surface of the combiner. The combiner contains a tilted axis polarizing structure that attenuates transmittance and subsequent reflection of a refracted polarized projector image but maintains high transmittance for the forward external scene imagery.
    Type: Application
    Filed: March 24, 2017
    Publication date: July 13, 2017
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Brent D. Larson, Kanghua Lu, Elias S. Haim
  • Patent number: 9606355
    Abstract: A head-up display system and method are provided that suppress double images from a combiner by eliminating or reducing a reflection of a refracted image from the back surface of the combiner. The combiner contains a tilted axis polarizing structure that attenuates transmittance and subsequent reflection of a refracted polarized projector image but maintains high transmittance for the forward external scene imagery.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: March 28, 2017
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Brent D. Larson, Kanghua Lu, Elias S. Haim
  • Publication number: 20160091716
    Abstract: A head-up display system and method are provided that suppress double images from a combiner by eliminating or reducing a reflection of a refracted image from the back surface of the combiner. The combiner contains a tilted axis polarizing structure that attenuates transmittance and subsequent reflection of a refracted polarized projector image but maintains high transmittance for the forward external scene imagery.
    Type: Application
    Filed: September 29, 2014
    Publication date: March 31, 2016
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Brent D. Larson, Kanghua Lu, Elias S. Haim
  • Publication number: 20160091715
    Abstract: A system and method of displaying a conformal-capable head-up display image is provided. Distortions caused by combiner curvature, for example, are removed by pre-distorting and projecting separate images for each eye. Shutter-based eyewear controls the visibility as the imagery is cycled, e.g., shuttered, between left and right eyes. The combined image generator, projector and eyewear system maintains minimal vergence errors, minimal dipvergence errors, acceptable average transmittance, and optionally, high conformality.
    Type: Application
    Filed: September 29, 2014
    Publication date: March 31, 2016
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Brent D. Larson, Kanghua Lu, Kalluri R. Sarma
  • Patent number: 9229228
    Abstract: A system and method of displaying a conformal-capable head-up display image is provided. A pre-distorted right-eye image and a pre-distorted left-eye image are separately generated and projected toward a windscreen. The pre-distorted right-eye image is reflected off of the windscreen to supply a reflected right eye image to a right eyebox, and the pre-distorted left-eye image is reflected off of the windscreen to supply a reflected left eye image to a left eyebox. The reflected right-eye image and the reflected left-eye image are each non-distorted images.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: January 5, 2016
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Brent D. Larson, Kanghua Lu
  • Publication number: 20150160457
    Abstract: A system and method of displaying a conformal-capable head-up display image is provided. A pre-distorted right-eye image and a pre-distorted left-eye image are separately generated and projected toward a windscreen. The pre-distorted right-eye image is reflected off of the windscreen to supply a reflected right eye image to a right eyebox, and the pre-distorted left-eye image is reflected off of the windscreen to supply a reflected left eye image to a left eyebox. The reflected right-eye image and the reflected left-eye image are each non-distorted images.
    Type: Application
    Filed: December 11, 2013
    Publication date: June 11, 2015
    Inventors: Brent D. Larson, Kanghua Lu
  • Patent number: 9013562
    Abstract: Methods and systems are provided for presenting content comprising a plurality of frames using display panel comprising an array of display elements. A method comprises transferring image data for a first frame of the plurality of frames to a display element at the beginning of a first frame interval and activating an illumination assembly after transferring image data for the first frame to the display element to present the first frame. The method further comprises transferring image data for a second frame to an energy storage element corresponding to the display element during the first frame interval, and deactivating the illumination assembly prior to transferring the image data for the second frame from the energy storage element to the display element.
    Type: Grant
    Filed: June 18, 2010
    Date of Patent: April 21, 2015
    Assignee: Honeywell International Inc.
    Inventors: Kalluri R. Sarma, John F. L. Schmidt, Kanghua Lu
  • Patent number: 8363100
    Abstract: Embodiments include aircraft systems, display systems, and methods for displaying three dimensional (3D) images. A backlight is controlled to sequentially alternate between activating a first set of light producing elements of the backlight and activating a second set of light producing elements of the backlight, where light produced by the first set of light producing elements is refracted by a lens system into a left eye viewing envelope, and light produced by the second set of light producing elements is refracted by the lens system into a right eye viewing envelope. A liquid crystal display (LCD) panel is controlled synchronously with the backlight in order to selectively pass or block portions of the light produced by the backlight in order to produce one or more left eye image frames in the left eye viewing envelope and one or more right eye image frames in the right eye viewing envelope.
    Type: Grant
    Filed: November 19, 2008
    Date of Patent: January 29, 2013
    Assignee: Honeywell International Inc.
    Inventor: Kanghua Lu
  • Publication number: 20120299839
    Abstract: Methods and apparatus are provided for a user interface with haptic feedback. The user interface includes a display element configured to display a visual image; a touch screen panel coupled to the display element and configured to receive a user input; a controller coupled to the touch screen panel and configured to generate a feedback signal based on the user input; a first actuator coupled to the controller and the touch screen panel and configured to operate in a first mode based on the feedback signal; and a second actuator coupled to the controller and the touch screen panel and configured to operate in a second mode based on the feedback signal.
    Type: Application
    Filed: May 27, 2011
    Publication date: November 29, 2012
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventor: Kanghua Lu
  • Publication number: 20110310234
    Abstract: Methods and systems are provided for presenting content comprising a plurality of frames using display panel comprising an array of display elements. A method comprises transferring image data for a first frame of the plurality of frames to a display element at the beginning of a first frame interval and activating an illumination assembly after transferring image data for the first frame to the display element to present the first frame. The method further comprises transferring image data for a second frame to an energy storage element corresponding to the display element during the first frame interval, and deactivating the illumination assembly prior to transferring the image data for the second frame from the energy storage element to the display element.
    Type: Application
    Filed: June 18, 2010
    Publication date: December 22, 2011
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Kalluri R. Sarma, John F.L. Schmidt, Kanghua Lu
  • Publication number: 20100123839
    Abstract: Embodiments include aircraft systems, display systems, and methods for displaying three dimensional (3D) images. A backlight is controlled to sequentially alternate between activating a first set of light producing elements of the backlight and activating a second set of light producing elements of the backlight, where light produced by the first set of light producing elements is refracted by a lens system into a left eye viewing envelope, and light produced by the second set of light producing elements is refracted by the lens system into a right eye viewing envelope. A liquid crystal display (LCD) panel is controlled synchronously with the backlight in order to selectively pass or block portions of the light produced by the backlight in order to produce one or more left eye image frames in the left eye viewing envelope and one or more right eye image frames in the right eye viewing envelope.
    Type: Application
    Filed: November 19, 2008
    Publication date: May 20, 2010
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventor: Kanghua Lu
  • Patent number: 7557870
    Abstract: A nuclear hardened liquid crystal display (LCD) and a method for hardening a liquid crystal display is provided. The nuclear hardened LCD can include an LCD glass laminate stack. The LCD glass laminate stack can include a front transparent substrate, a back substrate, and a liquid crystal material disposed between the front transparent substrate and the back substrate. The nuclear hardened LCD can further include a protective laminate stack positioned in front of the LCD glass laminate stack. The protective laminate stack can include a volume absorbing filter, that absorbs selective electromagnetic energy throughout a thickness of the volume absorbing filter.
    Type: Grant
    Filed: August 22, 2007
    Date of Patent: July 7, 2009
    Assignee: Honeywell International Inc.
    Inventors: Robert J. Saccomanno, Kanghua Lu
  • Publication number: 20070285596
    Abstract: A nuclear hardened liquid crystal display (LCD) and a method for hardening a liquid crystal display is provided. The nuclear hardened LCD can include an LCD glass laminate stack. The LCD glass laminate stack can include a front transparent substrate, a back substrate, and a liquid crystal material disposed between the front transparent substrate and the back substrate. The nuclear hardened LCD can further include a protective laminate stack positioned in front of the LCD glass laminate stack. The protective laminate stack can include a volume absorbing filter, that absorbs selective electromagnetic energy throughout a thickness of the volume absorbing filter.
    Type: Application
    Filed: August 22, 2007
    Publication date: December 13, 2007
    Applicant: HONEYWELL INTERNATIONAL, INC.
    Inventors: Kanghua Lu, Robert Saccomanno
  • Patent number: 7271854
    Abstract: A nuclear hardened liquid crystal display (LCD) and a method for hardening a liquid crystal display is provided. The nuclear hardened LCD can include an LCD glass laminate stack. The LCD glass laminate stack can include a front transparent substrate, a back substrate, and a liquid crystal material disposed between the front transparent substrate and the back substrate. The nuclear hardened LCD can further include a protective laminate stack positioned in front of the LCD glass laminate stack. The protective laminate stack can include a volume absorbing filter, that absorbs selective electromagnetic energy throughout a thickness of the volume absorbing filter.
    Type: Grant
    Filed: December 17, 2004
    Date of Patent: September 18, 2007
    Assignee: Honeywell International, Inc.
    Inventors: Kanghua Lu, Robert J. Saccomanno
  • Patent number: 6934080
    Abstract: A low-scatter polarization-preserving multilayer viewing screen. A substrate D, preferably a volume diffuser, for increasing the divergence of information-coded-light while preserving its polarization sense A as it passes therethrough has a discrimination of at least 2:1 within a viewing zone. An absorbing polarizer on one or both sides of D and aligned to pass polarization state A. In one embodiment, there is provided a polarization-state phase-shift layer for modifying the polarization state of forward-scatter and/or back-scatter that total internally reflects within the viewing screen into the state opposite of A. The phase-shift layer being located at any position between the polarizer and an outermost surface of the viewing screen through which said information-coded light passes.
    Type: Grant
    Filed: September 22, 2003
    Date of Patent: August 23, 2005
    Assignee: Honeywell International, Inc.
    Inventors: Robert J. Saccomanno, Kanghua Lu
  • Publication number: 20050140833
    Abstract: A nuclear hardened liquid crystal display (LCD) and a method for hardening a liquid crystal display is provided. The nuclear hardened LCD can include an LCD glass laminate stack. The LCD glass laminate stack can include a front transparent substrate, a back substrate, and a liquid crystal material disposed between the front transparent substrate and the back substrate. The nuclear hardened LCD can further include a protective laminate stack positioned in front of the LCD glass laminate stack. The protective laminate stack can include a volume absorbing filter, that absorbs selective electromagnetic energy throughout a thickness of the volume absorbing filter.
    Type: Application
    Filed: December 17, 2004
    Publication date: June 30, 2005
    Inventors: Kanghua Lu, Robert Saccomanno
  • Publication number: 20040105159
    Abstract: A low-scatter polarization-preserving multilayer viewing screen. A substrate D, preferably a volume diffuser, for increasing the divergence of information-coded-light while preserving its polarization sense A as it passes therethrough has a discrimination of at least 2:1 within a viewing zone. An absorbing polarizer on one or both sides of D and aligned to pass polarization state A. In one embodiment, there is provided a polarization-state phase-shift layer for modifying the polarization state of forward-scatter and/or back-scatter that total internally reflects within the viewing screen into the state opposite of A. The phase-shift layer being located at any position between the polarizer and an outermost surface of the viewing screen through which said information-coded light passes.
    Type: Application
    Filed: September 22, 2003
    Publication date: June 3, 2004
    Inventors: Robert J. Saccomanno, Kanghua Lu