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:
Apr. 19, 2022
Filed:
Aug. 30, 2018
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventors:
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F 1/21 (2006.01); G01J 3/26 (2006.01); G01J 3/32 (2006.01); G01J 3/50 (2006.01); G01J 3/42 (2006.01); G02B 26/00 (2006.01);
U.S. Cl.
CPC ...
G02F 1/21 (2013.01); G01J 3/26 (2013.01); G01J 3/32 (2013.01); G01J 3/42 (2013.01); G01J 3/50 (2013.01); G02B 26/001 (2013.01); G02F 1/213 (2021.01);
Abstract
An optical filter includes a substrate, a first reflective film provided on the substrate, a second reflective film disposed to face the first reflective film, and a supporting portion provided on the substrate and supporting the second reflective film. The first reflective film is protected with a first protective film so as not to be exposed and the second reflective film is protected with a second protective film so as not to be exposed.