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:
Jun. 04, 1991
Filed:
Nov. 03, 1989
Yoshihiro Tomita, Osaka, JP;
Ryoichi Takayama, Suita, JP;
Hisahito Ogawa, Ikoma, JP;
Koji Nomura, Ikoma, JP;
Junko Asayama, Suita, JP;
Atsushi Abe, Ikoma, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
In a pyroelectric infrared detector, there is provided a member having a slit positioned in front of an array of pyroelectric elements, which interrupts an infrared image which is incident on the pyroelectric element array, and respective pyroelectric elements forming a row of the pyroelectric element array are wired so that they are connected in series electrically and adjacent pyroelectric element generate counter-electromotive forces. An infrared image irradiated on respective pyroelectric elements is scanned successively by the movement of the slit member along a row of the pyroelectric element array, thus obtaining information relating to an infrared intensity distribution from a heat source which emits IR rays which are being irradiated onto respective pyroelectric elements, from time series signals produced at both ends of the pyroelectric element array.