Patents by Inventor Daping Chu

Daping Chu 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).

  • Publication number: 20210011285
    Abstract: The invention provides a display device for head mounting, in particular a Maxwellian display device, with an enlarged eye-box. The display device includes a light source emitting light beams for forming an image, an optical system for guiding the light beams to a beam forming element. The beam forming element is configured to converge each of multiple sets of the light beams into a different point of convergence, for example on an exit pupil of the display device. Each point of convergence is a convergent viewing point for a user. The eye-box is thus enlarged.
    Type: Application
    Filed: September 24, 2020
    Publication date: January 14, 2021
    Inventors: Tao LIN, Qing ZHANG, Jia JIA, Pawan SHRESTHA, Matt PRYN, Daping CHU
  • Patent number: 10887566
    Abstract: An image display system is provided and includes: at least one first projection unit, configured to project rays of N images on a first plane, so that the rays of the N images are projected on N first regions of the first plane, where the N images are images of a target object photographed based on N angles, and N?2; and at least one first refraction unit, configured on the first plane, and configured to perform refraction processing on the rays of the images projected on the first regions, so that the rays of the N images are collected on a common display region. In this way, presentation of a three-dimensional image can adapt to a human eye viewing habit.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: January 5, 2021
    Assignees: Huawei Technologies Co., Ltd., Cambridge Enterprise Limited
    Inventors: Jia Jia, Jhensi Chen, Daping Chu, Jun Yao
  • Patent number: 10856057
    Abstract: Methods and devices for manipulating optical signals. In one example, a LCOS (liquid crystal on silicon) device includes a surface bearing an anti-reflection structure. The anti-reflection structure includes i) a physical surface having a topography with features having lateral dimensions of less than 2000 nm and having an average refraction index which decreases with distance away from the surface; and ii) a configuration of the topography, averaged over lateral dimensions of greater than 2000 nm, varies with lateral position on the surface.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: December 1, 2020
    Assignee: Cambridge Enterprise Limited
    Inventors: Daping Chu, Brian Robertson
  • Publication number: 20200307116
    Abstract: A method of aligning a first and a second structure, the first structure comprising one or more first surface relief features and a channel system communicating with a surface of the first structure at one or more of the first surface relief features, the second structure comprising one or more second surface relief features shaped complementarily to the first surface relief features; the method comprising: generating suction in the channel system to draw the first and second structures together in a drawing direction; wherein, when the first and second structures are drawn together, the interaction between one or more of the first surface relief features and one or more of the second surface relief features aligns the structures in a plane perpendicular to the drawing direction such that the first and second surface relief features mate.
    Type: Application
    Filed: March 31, 2020
    Publication date: October 1, 2020
    Applicant: ROADMap Systems Limited
    Inventors: Peter John Wilkinson, Daping Chu
  • Patent number: 10761392
    Abstract: We describe a multimode reconfigurable optical spatial mode multiplexing system having first and second first and second input beams and a beam combiner to combine these into an optical output. At least one of the paths comprises a polarisation-independent reconfigurable phase modulator to impose a controllable phase profile on an input beam in an input beam phase modulating optical path, to controllably convert a spatial mode order of the input beam from a lower to a higher order spatial mode. The system also has a control input to control the phase modulator to configure the phase profile for the mode conversion. The input beams are combined into a multiple spatial mode combined beam output independent of a polarisation of the input beams. The number of spatial modes of the combined beam can be more than a number of spatial modes in either of the first and second input beams separately.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: September 1, 2020
    Assignee: Cambridge Enterprise Limited
    Inventors: Daping Chu, Haining Yang
  • Patent number: 10725295
    Abstract: An imaging system for generating multi-depth virtual images on a display screen includes an image realisation device for forming a source image, and projection optics for rendering a display image on the display screen. The display image is a virtual image corresponding to the source image. The image realisation device includes an image realisation surface having a first and second region, and the image receiving surface and the projection optics are arranged such that a first point in the first region of the image receiving surface and a second point in the second region of the image receiving surface are at a different distance from a focal point of the projection optics. A plurality of surfaces are arranged to direct light from the image realisation surface towards the projection optics.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: July 28, 2020
    Assignees: Jaguar Land Rover Limited, Cambridge Enterprise Limited
    Inventors: Valerian Meijering, Robert Hardy, Ali Yöntem, Kun Li, Daping Chu
  • Patent number: 10700804
    Abstract: We describe a wavelength division multiplexed (WDM) reconfigurable optical switch, the switch comprising: a set of arrays of optical beam connections, each comprising an array of optical outputs and having an optical input to receive a WDM input optical signal; a first diffractive element to demultiplexed said WDM input optical signal into a plurality of demultiplexed optical input beams, and to disperse said demultiplexed optical input beams spatially along a first axis; first relay optics between said set of arrays of optical beam connections and said first diffractive element; and a reconfigurable holographic array comprising a 2D array of reconfigurable sub-holograms defining sub-hologram rows and columns; wherein said arrays of said set of arrays are at least one dimensional arrays extending spatially in a direction parallel to said first axis and arranged in a column defining a second axis orthogonal to said first axis; wherein said sub-hologram rows are aligned along said first axis, and wherein said s
    Type: Grant
    Filed: August 20, 2019
    Date of Patent: June 30, 2020
    Assignee: Roadmap Systems LTD
    Inventors: Brian Robertson, Daping Chu, Haining Yang, Peter John Wilkinson
  • Patent number: 10587936
    Abstract: A wavelength division multiplexed (WDM) reconfigurable optical switch, the switch has at least one optical input port to receive a WDM input optical signal comprising a plurality of wavelength channels; a plurality of optical output ports; a reconfigurable holographic array on an optical path between the at least one optical input port and the plurality of optical output ports; and at least one diffractive element on an optical path between at least one optical input port and the reconfigurable holographic array, to demultiplex the WDM input optical signal into a plurality of demultiplexed optical input beam channels, and to disperse the demultiplexed optical input beam channels spatially along a first axis on said the reconfigurable holographic array; and the switch further comprises one or more beam profiling optical elements to modify transverse beam profiles of the demultiplexed optical input beam channels.
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: March 10, 2020
    Assignee: Roadmap Systems Ltd
    Inventors: Haining Yang, Daping Chu, Brian Robertson
  • Publication number: 20200057312
    Abstract: The present disclosure provides a device for generating a 3D light field. The device comprises a first lens having a fixed focal length, and an imaging element arranged to send light into the first lens. The imaging element is configured to send the light from different positions within a defined distance on the optical axis of the first lens, in order to produce different depth layers of the 3D light field within a frame duration.
    Type: Application
    Filed: October 25, 2019
    Publication date: February 20, 2020
    Inventors: Jia JIA, Jhensi CHEN, Daping CHU, Qing ZHANG, Tao LIN
  • Publication number: 20200053327
    Abstract: The present invention provides a display system 100 for displaying image data. The display system 100 comprises a light source 101; a spatial light modulator 102 including a plurality of controllable reflective elements 1020; a light source controller 103, configured to control the light source 101 to emit, in each of a plurality of time intervals, light with a different illumination power level, wherein the time intervals have the same length; and a spatial light modulator controller 104, configured to activate, based on received image data, the plurality of controllable elements for at least one of the time intervals for directing the light from the light source for display the image data. Accordingly, the frame rate and bandwidth of the display system 100 are increased significantly so as to be suitable for the light filed applications.
    Type: Application
    Filed: October 21, 2019
    Publication date: February 13, 2020
    Inventors: Jhensi CHEN, Jia JIA, Daping CHU, Qing ZHANG, Tao LIN
  • Publication number: 20200021383
    Abstract: We describe a wavelength division multiplexed (WDM) reconfigurable optical switch, the switch comprising: a set of arrays of optical beam connections, each comprising an array of optical outputs and having an optical input to receive a WDM input optical signal; a first diffractive element to demultiplexed said WDM input optical signal into a plurality of demultiplexed optical input beams, and to disperse said demultiplexed optical input beams spatially along a first axis; first relay optics between said set of arrays of optical beam connections and said first diffractive element; and a reconfigurable holographic array comprising a 2D array of reconfigurable sub-holograms defining sub-hologram rows and columns; wherein said arrays of said set of arrays are at least one dimensional arrays extending spatially in a direction parallel to said first axis and arranged in a column defining a second axis orthogonal to said first axis; wherein said sub-hologram rows are aligned along said first axis, and wherein said s
    Type: Application
    Filed: August 20, 2019
    Publication date: January 16, 2020
    Inventors: Brian Robertson, Daping Chu, Haining Yang, Peter John Wilkinson
  • Publication number: 20190394436
    Abstract: An image display system is disclosed and includes: at least one first projection unit (112), configured to project rays of N images on a first plane, so that the rays of the N images are projected on N first regions of the first plane, where the N images are images of target object photographed based on N angles, and N?2; and at least one first refraction unit (122), configured on the first plane, and configured to perform refraction processing on the rays of the images projected on the first regions, so that the rays of the N images are collected on a common display region. In this way, presentation of a three-dimensional image can adapt to a human eye viewing habit.
    Type: Application
    Filed: September 9, 2019
    Publication date: December 26, 2019
    Inventors: Jia JIA, Jhensi CHEN, Daping CHU, Jun YAO
  • Publication number: 20190384059
    Abstract: An imaging system includes an image realisation device, and projection optics for rendering a display image on a display screen. The image realisation device includes an image realisation surface and a light structuring device having a surface with a first and second region. The light structuring device simulates a first lens on the first region of the surface. A first source image formed on a first region of the image realisation surface and projected through the projection optics renders a first display image on the display screen at a first apparent depth. The light structuring device simulates a second lens on the second region of the surface. A second source image formed on a second region of the image realisation surface and projected through the projection optics renders a second display image on the display screen at a second apparent depth. The first and second lens are independently configurable.
    Type: Application
    Filed: November 29, 2017
    Publication date: December 19, 2019
    Inventors: Valerian MEIJERING, Robert HARDY, Ali YÖNTEM, Kun LI, Daping CHU
  • Patent number: 10491322
    Abstract: A wavelength division multiplexed (WDM) reconfigurable optical switch. The switch has a set of arrays of optical beam connections, each comprising an array of optical outputs and having an optical input to receive a WDM input optical signal; a first diffractive element to demultiplexed the WDM input optical signal into a plurality of demultiplexed optical input beams, and to disperse said demultiplexed optical input beams spatially along a first axis; first relay optics between the set of arrays of optical beam connections and the first diffractive element; and a reconfigurable holographic array comprising a 2D array of reconfigurable sub-holograms defining sub-hologram rows and columns. The arrays of said set of arrays and the sub-hologram rows and columns are arranged and aligned in particular ways so that wavelength channels of the WDM input signal for each array can be steered within the device towards a selected optical output.
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: November 26, 2019
    Assignee: Roadmap Systems Ltd
    Inventors: Brian Robertson, Daping Chu, Haining Yang, Peter John Wilkinson
  • Publication number: 20190317326
    Abstract: A system includes an image realisation device for forming a source image and projection optics for rendering a display image on a display screen, wherein the display image is a virtual image corresponding to the source image. The projection optics have an optical axis, and the image realisation device includes a first image realisation surface at a first distance along the optical axis and a second image realisation surface at a second, different distance along the optical axis. The first and second image realisation surfaces overlap, and the first and second image realisation surfaces include multiple regions, each region switchable between a transparent state and an image realisation state such that the source image may be formed on a region of the first or second image realisation surface and projected through the projection optics to render the display image on the display screen at a first or second apparent depth.
    Type: Application
    Filed: November 29, 2017
    Publication date: October 17, 2019
    Inventors: Valerian MEIJERING, Robert HARDY, Kun LI, Ali YÖNTEM, Daping CHU
  • Publication number: 20190317327
    Abstract: An imaging system includes an image realisation device and projection optics for rendering a display image on a display screen. The image realisation device includes a first image realisation surface tilted relative to an optical axis such that a first point in a first region of the image realisation surface is at a first distance from the focal point of the projection optics and a second point in a second region of the image realisation surface is at a second different distance from the focal point of the projection optics. A first source image formed on the first region and projected through the projection optics renders the first display image on the display screen at a first apparent depth, and a second source image formed on the second region and projected through the projection optics renders the second display image on the display screen at a second apparent depth.
    Type: Application
    Filed: November 29, 2017
    Publication date: October 17, 2019
    Inventors: Valerian MEIJERING, Robert HARDY, Kun LI, Ali YÖNTEM, Daping CHU
  • Publication number: 20190317324
    Abstract: An imaging system for generating multi-depth virtual images on a display screen includes an image realisation device for forming a source image, and projection optics for rendering a display image on the display screen. The display image is a virtual image corresponding to the source image. The image realisation device includes an image realisation surface having a first and second region, and the image receiving surface and the projection optics are arranged such that a first point in the first region of the image receiving surface and a second point in the second region of the image receiving surface are at a different distance from a focal point of the projection optics. A plurality of surfaces are arranged to direct light from the image realisation surface towards the projection optics.
    Type: Application
    Filed: November 30, 2017
    Publication date: October 17, 2019
    Inventors: Valerian MEIJERING, Robert HARDY, Ali YÖNTEM, Kun LI, Daping CHU
  • Patent number: 10379494
    Abstract: A holographic display system for generating a super hologram with full parallax in different fields of view in the horizontal and vertical directions. The display system includes assemblies or subsystems each adapted to combine holographic displays and coarse integral displays to produce or display a coarse integral hologram. Briefly, the display system described herein teaches techniques for enhancing operations of coarse integral holographic (CIH) displays. The enhanced CIH displays may utilize ganged scanners, may operate scanners to provide boustrophedon scanning, may be configured to add color information such by view sequential color hologram display and scanning, may replace or supplement X-Y scanning abilities with a resonant scanner, and may replace physical lenslet arrays by generating and displaying a holographic lenslet for each elemental hologram used to create the super hologram.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: August 13, 2019
    Assignees: DISNEY ENTERPRISES, INC., CAMBRIDGE ENTERPRISE LIMITED
    Inventors: Quinn Y. Smithwick, Daping Chu, Jhen-Si Chen
  • Patent number: 10302958
    Abstract: The present disclosure discloses a display apparatus, a stereoscopic display apparatus, and an application terminal thereof. The display apparatus includes a display panel and a light collimation module. The display panel includes an RGB pixel array. The RGB pixel array includes multiple RGB pixels disposed at intervals. The light collimation module includes a control electrode layer, a first transparent substrate, a liquid crystal layer, and a second transparent substrate. The control electrode layer is disposed within the intervals between the RGB pixels or at positions that are on the display panel and that are corresponding to the intervals between the RGB pixels. The first transparent substrate is disposed on the display panel and covers the control electrode. The liquid crystal layer is disposed on the first transparent substrate. The second transparent substrate is disposed on the liquid crystal layer.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: May 28, 2019
    Assignees: Huawei Technologies Co., Ltd., Cambridge Enterprise Limited
    Inventors: Jiong Zhou, Kun Li, Daping Chu
  • Patent number: 10261399
    Abstract: A projection system relates to the field of display technologies, and includes a projection unit, a screen unit, an outer frame, and a support structure component. The support structure component is configured to securely connect the screen unit to the outer frame. The support structure component is located on a light incident side of the screen unit. The support structure component includes a light transmission part and at least one connecting part. The light transmission part is securely connected to the screen unit. The light transmission part is configured to enable light rays emitted by the projection unit and irradiating the light transmission part to pass through. The at least one connecting part is located out of propagation paths of light rays emitted by the projection unit. The at least one connecting part is configured to securely connect the light transmission part to the outer frame.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: April 16, 2019
    Assignees: Huawei Technologies Co., Ltd., Cambridge Enterprise Limited
    Inventors: Zhi Huang, Brian Robertson, Daping Chu