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. 12, 1996
Filed:
Mar. 15, 1995
Aisaku Nagai, Iwaki, JP;
Kureha Kagaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A dual-type pyroelectric elements. The first pyroelectric element is constituted by a larger electrode on a first surface and a smaller electrode on a second surface, respectively of a pyroelectric sheet. The second pyroelectric element is on the other hand constituted by a smaller electrode on the first surface and a larger electrode on the second surface respectively of the pyroelectric sheet. Further, takeout electrodes are taken out respectively integrally from the smaller electrodes on both surfaces of the pyroelectric sheet in mutually opposite directions. As a result, even if electrodes patterns on both surfaces of the pyroelectric sheet expected to be formed in alignment with each other are actually deviated positionally, the resultant pairs of pyroelectric elements are allowed to retain substantially identical effective light-receiving areas inclusive of those given by takeout electrodes, thus providing a dual pyroelectric sensor which is excellent in performance of canceling common-mode noises caused by a vibration, temperature change or background radiation.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile