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:
Feb. 15, 2005
Filed:
Oct. 13, 2003
Tsuyoshi Mekata, Osaka, JP;
Taro Imagawa, Osaka, JP;
Koji Morikawa, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
In an infrared imaging device, shutting meansis configured so that it can be opened/closed and so as to shut off an infrared radiation coming into an optical systemwhen it is closed. During an imaging operation, the shutting meansis opened, and the optical systemcauses an infrared radiation from an objectto form an image on an infrared detector. The infrared detectoroutputs a signal according to the amount of infrared light received by each pixel. Correction meanscorrects sensitivity variations among pixels, the influence of the infrared radiation from the optical system, etc. During a calibration operation, the shutting meansis closed, and the correction meansdetermines a correction coefficient for correcting fluctuations in the amount of infrared radiation from the optical systemby using the output of the infrared detectorimaging the shutting means