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. 04, 2012
Filed:
Nov. 20, 2007
Yukinobu Sugiyama, Hamamatsu, JP;
Seiichiro Mizuno, Hamamatsu, JP;
Yukinobu Sugiyama, Hamamatsu, JP;
Seiichiro Mizuno, Hamamatsu, JP;
Hamamatsu Photonics K.K., Hamamatsu-shi, Shizuoka, JP;
Abstract
A determination unitdetermines whether there is incident light, based on an output value from an integrating circuit, and generates a determinated signal indicating a determinated result. A control unitcontrols charge accumulating portions of an imaging light-receiving unitwhether or not to start accumulation of an electric charge, based on the determinated signal, and changes a charge accumulation capacitance value of the integrating circuitof an output unit. Specifically, the control unitvaries the capacitance value for accumulation of an electric charge generated in a trigger light-receiving unit, depending upon the detection result on the presence/absence of incident light, to switch the sensitivity of the integrating circuitto the trigger PD, thereby enabling optimal utilization of the trigger PD.