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).
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Patent number: 10509224Abstract: 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: GrantFiled: March 24, 2017Date of Patent: December 17, 2019Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Brent D. Larson, Kanghua Lu, Elias S. Haim
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Patent number: 10459224Abstract: 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: GrantFiled: September 29, 2014Date of Patent: October 29, 2019Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Brent D. Larson, Kanghua Lu, Kalluri R. Sarma
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Patent number: 10180722Abstract: 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: GrantFiled: May 27, 2011Date of Patent: January 15, 2019Assignee: HONEYWELL INTERNATIONAL INC.Inventor: Kanghua Lu
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Publication number: 20170199380Abstract: 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: ApplicationFiled: March 24, 2017Publication date: July 13, 2017Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Brent D. Larson, Kanghua Lu, Elias S. Haim
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Patent number: 9606355Abstract: 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: GrantFiled: September 29, 2014Date of Patent: March 28, 2017Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Brent D. Larson, Kanghua Lu, Elias S. Haim
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Publication number: 20160091715Abstract: 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: ApplicationFiled: September 29, 2014Publication date: March 31, 2016Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Brent D. Larson, Kanghua Lu, Kalluri R. Sarma
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Publication number: 20160091716Abstract: 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: ApplicationFiled: September 29, 2014Publication date: March 31, 2016Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Brent D. Larson, Kanghua Lu, Elias S. Haim
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Patent number: 9229228Abstract: 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: GrantFiled: December 11, 2013Date of Patent: January 5, 2016Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Brent D. Larson, Kanghua Lu
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Publication number: 20150160457Abstract: 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: ApplicationFiled: December 11, 2013Publication date: June 11, 2015Inventors: Brent D. Larson, Kanghua Lu
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Patent number: 9013562Abstract: 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: GrantFiled: June 18, 2010Date of Patent: April 21, 2015Assignee: Honeywell International Inc.Inventors: Kalluri R. Sarma, John F. L. Schmidt, Kanghua Lu
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Patent number: 8363100Abstract: 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: GrantFiled: November 19, 2008Date of Patent: January 29, 2013Assignee: Honeywell International Inc.Inventor: Kanghua Lu
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Publication number: 20120299839Abstract: 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: ApplicationFiled: May 27, 2011Publication date: November 29, 2012Applicant: HONEYWELL INTERNATIONAL INC.Inventor: Kanghua Lu
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Publication number: 20110310234Abstract: 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: ApplicationFiled: June 18, 2010Publication date: December 22, 2011Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Kalluri R. Sarma, John F.L. Schmidt, Kanghua Lu
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Publication number: 20100123839Abstract: 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: ApplicationFiled: November 19, 2008Publication date: May 20, 2010Applicant: HONEYWELL INTERNATIONAL INC.Inventor: Kanghua Lu
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Patent number: 7557870Abstract: 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: GrantFiled: August 22, 2007Date of Patent: July 7, 2009Assignee: Honeywell International Inc.Inventors: Robert J. Saccomanno, Kanghua Lu
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Publication number: 20070285596Abstract: 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: ApplicationFiled: August 22, 2007Publication date: December 13, 2007Applicant: HONEYWELL INTERNATIONAL, INC.Inventors: Kanghua Lu, Robert Saccomanno
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Patent number: 7271854Abstract: 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: GrantFiled: December 17, 2004Date of Patent: September 18, 2007Assignee: Honeywell International, Inc.Inventors: Kanghua Lu, Robert J. Saccomanno
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Patent number: 6934080Abstract: 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: GrantFiled: September 22, 2003Date of Patent: August 23, 2005Assignee: Honeywell International, Inc.Inventors: Robert J. Saccomanno, Kanghua Lu
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Publication number: 20050140833Abstract: 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: ApplicationFiled: December 17, 2004Publication date: June 30, 2005Inventors: Kanghua Lu, Robert Saccomanno
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Publication number: 20040105159Abstract: 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: ApplicationFiled: September 22, 2003Publication date: June 3, 2004Inventors: Robert J. Saccomanno, Kanghua Lu