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:
Jul. 29, 2025
Filed:
Aug. 27, 2021
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventor:
Atsushi Saito, Chino, JP;
Assignee:
SEIKO EPSON CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 27/01 (2006.01); G02B 5/00 (2006.01); G02B 5/04 (2006.01); G02B 5/18 (2006.01);
U.S. Cl.
CPC ...
G02B 27/0172 (2013.01); G02B 5/003 (2013.01); G02B 5/04 (2013.01); G02B 5/1861 (2013.01); G02B 2027/0178 (2013.01);
Abstract
A virtual image display device includes an imaging light generation device generating an imaging light, a transmission inclined mirror configured to reflect the imaging light, and a concave transmission mirror including: a partial reflection film reflecting the imaging light reflected transmission inclined mirror, and a reflection type diffraction layer being disposed on opposite to the reflection film. In the reflection type diffraction layer diffracts the imaging light in a direction that is different from a direction in which the reflection film reflects the imaging light.