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:
Jul. 28, 2009
Filed:
Nov. 08, 2007
Koji Hayashi, Kyoto, JP;
Dai Sasaki, Hakui, JP;
Koji Hayashi, Kyoto, JP;
Dai Sasaki, Hakui, JP;
Murata Manufacturing Co. Ltd., Kyoto, JP;
Abstract
An infrared sensor has a groove formed at a peripheral portion of an optical filter in a region opposed to a circumferential region of an opening of a package so as to be continuously located in the peripheral portion of the optical filter. The optical filter has a resistance of about 1 MΩ/cm or less. The package is mainly composed of a metal material. A conductive adhesive is used as an adhesive for joining the optical filter to the package. In a case where the optical filter has a filter body and a thin film made of an insulating material and provided on a surface of the filter body, the groove is formed to have a depth extending from the surface provided with the thin film made of the insulating material to the filter body.