The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 14, 2016
Filed:
Jun. 03, 2015
Applicants:
Dewen Cheng, Beijing, CN;
Yongtian Wang, Beijing, CN;
Yue Liu, Beijing, CN;
Inventors:
Assignee:
BEIJING INSTITUTE OF TECHNOLOGY, Beijing, CN;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G02B 27/14 (2006.01); G02B 9/00 (2006.01); G02F 1/00 (2006.01); G02B 27/01 (2006.01); G02B 27/22 (2006.01); H04N 13/04 (2006.01); H04N 13/00 (2006.01); G02B 5/04 (2006.01);
U.S. Cl.
CPC ...
G02B 27/0172 (2013.01); G02B 5/04 (2013.01); G02B 27/225 (2013.01); H04N 13/0033 (2013.01); H04N 13/044 (2013.01); H04N 13/0443 (2013.01); H04N 13/0459 (2013.01); G02B 2027/0114 (2013.01); G02B 2027/0125 (2013.01); H04N 2213/001 (2013.01);
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.