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:
Dec. 04, 2018
Filed:
Jan. 06, 2016
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventor:
Fumika Yamada, Matsumoto, JP;
Assignee:
SEIKO EPSON CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 27/01 (2006.01); G02B 26/10 (2006.01);
U.S. Cl.
CPC ...
G02B 27/0172 (2013.01); G02B 26/10 (2013.01); G02B 2027/0118 (2013.01); G02B 2027/0174 (2013.01); G02B 2027/0178 (2013.01);
Abstract
An image display apparatus includes a light source configured to emit image light, a scanning mirror configured to reflect the image light from the light source, and a reflective diffraction optical element configured to change a direction of the image light from the scanning mirror to a different direction in addition to regular reflection. The scanning mirror is arranged at a position and a height as different from an observing point as possible. A direction of extension of an interference fringe of the reflective diffraction optical element intersects incident light from the light source.