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. 13, 2021
Filed:
Feb. 01, 2018
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventor:
Nozomu Hirokubo, Fujimi, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 27/00 (2006.01); G02B 26/00 (2006.01);
U.S. Cl.
CPC ...
G02B 26/001 (2013.01);
Abstract
An optical filter device includes a wavelength variable interference filter that has a fixed substrate provided with a fixed reflective film and a movable substrate provided with a movable reflective film, a casing that has an inner space for storing the wavelength variable interference filter therein, and a fixation portion that fixes the wavelength variable interference filter to the casing. In addition, the fixation portion is provided between a side surface of the fixed substrate and an inner surface of the casing.