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:
Nov. 21, 2023
Filed:
Jan. 22, 2021
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventor:
Hirotaka Yanagisawa, Azumino, JP;
Assignee:
SEIKO EPSON CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 21/28 (2006.01); G02B 13/16 (2006.01); G03B 21/20 (2006.01);
U.S. Cl.
CPC ...
G03B 21/28 (2013.01); G02B 13/16 (2013.01); G03B 21/2066 (2013.01);
Abstract
A projection system includes a first optical system, a second optical system including an optical element and disposed on the enlargement side of the first optical system, and a deflector disposed between the first optical system and the second optical system and deflecting the optical path. The optical element has a first transmissive surface, a reflection surface disposed on the enlargement side of the first transmissive surface, and a second transmissive surface disposed on the enlargement side of the reflection surface.