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:
Nov. 27, 2007
Filed:
Jun. 02, 2005
Ryosuke Nakamura, Nagano, JP;
Akihiro Murata, Yamanashi, JP;
Ryosuke Nakamura, Nagano, JP;
Akihiro Murata, Yamanashi, JP;
Seiko Epson Corporation, , JP;
Abstract
A tunable filter including; a fixed substrate provided with a fixed reflecting film and capable of transmitting light having a shorter wavelength than infrared light; a movable substrate provided with a movable section equipped with a movable reflecting film and disposed to the fixed substrate so that the movable reflecting film and the fixed reflecting film faces each other with a predetermined length of gap; and a drive section for varying the length of the gap by displacing the movable section with respect to the fixed substrate, wherein light entering the gap from the outside is repeatedly reflected by the movable reflecting film and the fixed reflecting film for outputting light having a wavelength corresponding to the length of the gap, and the movable section is provided, at an area to which the movable reflecting film is disposed, with a light transmitting section capable of transmitting light having a shorter wavelength than infrared light and for inputting/outputting light from/to the outside.