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. 10, 2018
Filed:
Nov. 18, 2014
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventor:
Tomonori Matsushita, Chino, JP;
Assignee:
Seiko Epson Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 27/00 (2006.01); G02B 26/00 (2006.01); G01J 3/26 (2006.01); G01J 3/51 (2006.01); G02B 5/28 (2006.01); G02B 5/22 (2006.01); G02B 5/26 (2006.01); G01J 3/12 (2006.01);
U.S. Cl.
CPC ...
G02B 26/001 (2013.01); G01J 3/26 (2013.01); G01J 3/51 (2013.01); G02B 5/22 (2013.01); G02B 5/26 (2013.01); G02B 5/28 (2013.01); G02B 5/284 (2013.01); G01J 2003/1213 (2013.01); G01J 2003/1234 (2013.01);
Abstract
An optical filter device includes a variable wavelength interference filter having a pair of reflecting films opposed to each other, and an electrostatic actuator adapted to change a gap dimension between the pair of reflecting films, and at least one bandpass filter disposed on an optical axis of the pair of reflecting films, and the bandpass filter includes a plurality of transmission wavelength bands in which light is transmitted.