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:
Aug. 27, 2002
Filed:
Oct. 04, 1999
Akihiro Kawahara, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A new infrared focal plane array detector which removes an offset in output signal therefrom and eliminates an influence of a temperature drift thereby to augment the accuracy in detection of infrared rays and a method of producing the infrared focal plane array detector are provided. The infrared focal plane array detector includes three kinds of bolometer detectors including first bolometer detectors serving as light reception elements having a thermal isolation structure from a substrate and disposed in a two-dimensional array, second bolometer detectors having a thermal isolation structure from the substrate but provided with a light interception mechanism so that they may not receive infrared rays, and third bolometer detectors having no thermal isolation structure from the substrate. A bridge circuit is formed by an arbitrary combination of four bolometer detectors of the three kinds addressed by two shift registers . Each bolometer detector is connected at one of a pair of electrode terminals thereof to an input terminal of a differential amplifier such that midpoint potentials of the bridge circuit may be inputted to the differential amplifier.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile