Patents by Inventor Yongtian Wang

Yongtian Wang 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).

  • WEARABLE DISPLAY APPARATUS
    Publication number: 20150268474
    Abstract: A display apparatus includes a planar waveguide optical element, a projection optical system, and a microdisplay device. By including free-form optics and waveguide technology, the volume and weight of the display apparatus can be reduced, and an optical system can be realized with improved image quality, structure, and performance parameters.
    Type: Application
    Filed: June 3, 2015
    Publication date: September 24, 2015
    Applicant: BEIJING INSTITUTE OF TECHNOLOGY
    Inventors: Dewen CHENG, Yongtian WANG, Yue LIU
  • Display apparatus and system and display method thereof
    Patent number: 9052505
    Abstract: A display apparatus includes a planar waveguide optical element, a projection optical system, and a microdisplay device. By including free-form optics and waveguide technology, the volume and weight of the display apparatus can be reduced, and an optical system can be realized with improved image quality, structure, and performance parameters.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: June 9, 2015
    Assignee: BEIJING INSTITUTE OF TECHNOLOGY
    Inventors: Dewen Cheng, Yongtian Wang, Yue Liu
  • DISPLAY APPARATUS AND SYSTEM AND DISPLAY METHOD THEREOF
    Publication number: 20140293434
    Abstract: A display apparatus includes a planar waveguide optical element, a projection optical system, and a microdisplay device. By including free-form optics and waveguide technology, the volume and weight of the display apparatus can be reduced, and an optical system can be realized with improved image quality, structure, and performance parameters.
    Type: Application
    Filed: June 3, 2014
    Publication date: October 2, 2014
    Applicant: BEIJING INSTITUTE OF TECHNOLOGY
    Inventors: Dewen CHENG, Yongtian WANG, Yue LIU
  • OPTICAL SEE-THROUGH FREE-FORM HEAD-MOUNTED DISPLAY
    Publication number: 20140009845
    Abstract: A see-through free-form head-mounted display including a wedge-shaped prism-lens having free-form surfaces and low F-number is provided.
    Type: Application
    Filed: August 27, 2013
    Publication date: January 9, 2014
    Inventors: Dewen Cheng, Hong Hua, Yongtian Wang
  • WIDE ANGLE AND HIGH RESOLUTION TILED HEAD-MOUNTED DISPLAY DEVICE
    Publication number: 20130187836
    Abstract: A tiled head-mounted display device comprises an optical component including a plurality of prisms with free-form surfaces, and a display component including a plurality of micro-displays (6), wherein the number of the micro-displays (6) and the number of the prisms with free-form surfaces is identical, and each prism with free-form surfaces and the corresponding micro-display (6) constitute a display channel. Each prism is a wedge prism including a first surface (2), a second surface (3) and a third surface (4). The exit pupil planes of each display channel are coincident, thus avoiding pupil aberration and keeping exit pupil diameter and eye clearance same as a single ocular. There is no resolution variance throughout the entire field of view, thus preventing extra trapezoid distortion. The tiled head-mounted display device is compact and lightweight, and provides wide field of view and high resolution.
    Type: Application
    Filed: April 30, 2010
    Publication date: July 25, 2013
    Inventors: Dewen Cheng, Yongtian Wang, Hong Hua
  • OPTICAL SEE-THROUGH FREE-FORM HEAD-MOUNTED DISPLAY
    Publication number: 20120081800
    Abstract: A see-through free-form head-mounted display including a wedge-shaped prism-lens having free-form surfaces and low F-number is provided.
    Type: Application
    Filed: April 20, 2010
    Publication date: April 5, 2012
    Inventors: Dewen Cheng, Hong Hua, Yongtian Wang