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. 09, 2015
Filed:
Mar. 21, 2013
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 5/22 (2013.01);
Abstract
Detection circuits include a pyroelectric element, source follower circuits that include transistors TN, TPin which a detection signal SD from the pyroelectric element is inputted to a gate, first switching elements that interrupt an electric current that flows in the transistors, and a second switching element that interrupts between the pyroelectric element and the gate of the transistor. The second switching element can interrupts a connection between the pyroelectric element and the gate of the transistor before the first switching elements interrupt the electric current that flows in the transistors TN, TP