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:
Jan. 26, 2021
Filed:
Nov. 20, 2018
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventor:
Akira Sano, Matsumoto, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 26/00 (2006.01); G01J 3/28 (2006.01); G01J 3/02 (2006.01); H04N 1/60 (2006.01); G01J 3/26 (2006.01); B41J 2/44 (2006.01);
U.S. Cl.
CPC ...
G02B 26/001 (2013.01); G01J 3/0229 (2013.01); G01J 3/26 (2013.01); G01J 3/2823 (2013.01); H04N 1/6033 (2013.01); B41J 2/44 (2013.01);
Abstract
A wavelength tunable interference filter includes a movable section having a mirror region that faces a first mirror in a first direction and an electrode so provided in a region outside the mirror region in a plan view viewed in the first direction as to surround the mirror region along the circumferential direction thereof, the electrode configured to displace the movable section in the first direction when voltage is applied to the electrode, and the width of the electrode in the plan view varies in the circumferential direction.