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:
May. 23, 2023
Filed:
Jul. 21, 2020
Applicants:
Fusao Ishii, Pittsburgh, PA (US);
Ntt Docomo, Inc., Tokyo, JP;
Inventors:
Fusao Ishii, Pittsburgh, PA (US);
Mikiko Nakanishi, Tokyo, JP;
Kazuoki Ichikawa, Tokyo, JP;
Mikio Iwamura, Tokyo, JP;
Assignees:
Other;
NTT DOCOMO, Inc., Toyko, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02B 26/00 (2006.01); G02B 27/01 (2006.01); G02B 27/12 (2006.01); F21V 8/00 (2006.01); G02B 13/22 (2006.01); G02B 5/09 (2006.01);
U.S. Cl.
CPC ...
G02B 27/0101 (2013.01); G02B 5/09 (2013.01); G02B 6/001 (2013.01); G02B 6/0006 (2013.01); G02B 6/0028 (2013.01); G02B 6/0075 (2013.01); G02B 13/22 (2013.01); G02B 2027/0123 (2013.01);
Abstract
A projection display having an optical light guide for a see-though display system using holographic optical element or diffractive optical element as in-coupling optics and combined with Fresnel mirrors as out-coupling optics is disclosed. A display using this light guide enables a wide angle (e.g., over 90 degrees field of view), high resolution, and a large eye-box with a compact size.