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:
Dec. 29, 2015
Filed:
May. 29, 2015
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventor:
Mitsuhiro Yamamura, Nagano, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01J 5/34 (2006.01); G01J 5/22 (2006.01);
U.S. Cl.
CPC ...
G01J 5/34 (2013.01); G01J 2005/345 (2013.01);
Abstract
A detection circuit includes a pyroelectric element, an amplifier circuit, a first switching element and a second switching element. The amplifier circuit includes a transistor in which a detection signal from the pyroelectric element is inputted to a gate. The first switching element interrupts an electric current that flows into the transistor. The second switching element interrupts a connection between the pyroelectric element and the gate of the transistor.