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. 03, 2017
Filed:
Sep. 26, 2012
Seiko Epson Corporation, Tokyo, JP;
Seiko Epson Corporation, , JP;
Abstract
An optical filter device includes a variable wavelength interference filter having a stationary substrate, a movable substrate, a stationary reflecting film, and a movable reflecting film, and a housing adapted to house the variable wavelength interference filter therein. The housing has a base substrate, a lid bonded to the base substrate, and forming an internal space between the base substrate and the lid, and a lid-side glass substrate adapted to block a light passage hole provided to the lid. Further, the lid-side glass substrate has a substrate edge located outside the outer peripheral edge of the light passage hole, and is bonded to the lid in an area extending from the outer peripheral edge of the light passage hole to the substrate edge.