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. 24, 2014
Filed:
Jan. 16, 2012
Hidetaka Noguchi, Sanda, JP;
Hirofumi Watanabe, Miki, JP;
Hidetaka Noguchi, Sanda, JP;
Hirofumi Watanabe, Miki, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An infrared sensor includes a MOSFET sensor, and a current source MOSFET which is connected to the MOSFET sensor in series and constitutes a constant current source for driving the MOSFET sensor with a constant current, wherein a terminal between the MOSFET sensor and the current source MOSFET constitutes a sensor output terminal, the MOSFET sensor is disposed on a heat-insulated structure, the current source MOSFET is disposed outside the heat-insulated structure, and the MOSFET sensor and the current source MOSFET are constituted by a same conductivity type MOSFET and operate in a subthreshold region.