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. 21, 1995
Filed:
May. 10, 1994
Applicant:
Inventors:
Tadashi Sugimoto, Koga, JP;
Shingo Ohkawa, Otsu, JP;
Hiroyuki Amano, Otsu, JP;
Norikazu Murata, Otsu, JP;
Assignee:
Optex Co., Ltd., Shiga, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01J / ;
U.S. Cl.
CPC ...
2503383 ; 250349 ; 250D / ;
Abstract
A pyroelectric infrared detector used in the intrusion detection system, the detector including a housing having an opening, at least two infrared transmissive pyroelectric layers spaced to be mutually free from thermal influence; and a plurality of electrodes formed on the surfaces of each of the pyroelectric layer, the electrodes electrically connected to each other.