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:
Sep. 06, 2005
Filed:
Sep. 25, 2000
Motohiro Suyama, Hamamatsu, JP;
Yoshihiko Kawai, Hamamatsu, JP;
Tetsuya Morita, Hamamatsu, JP;
Koichiro Oba, Hamamatsu, JP;
Motohiro Suyama, Hamamatsu, JP;
Yoshihiko Kawai, Hamamatsu, JP;
Tetsuya Morita, Hamamatsu, JP;
Koichiro Oba, Hamamatsu, JP;
Hamamatsu Photonics K.K., Hamamatsu, JP;
Abstract
An optical measurement apparatusprimarily includes: a photon detection unitfor detecting incident photons, a time signal output unitfor outputting a time signal, and a storage unitfor storing the time signal outputted from the time signal output unitwhen the photon detection unitdetects photons. The photon detection unitincludes a HPDhaving a photocathodeand an APD, a TZ amplifier, a peak holding circuit, and an A/D converter. The time signal output unitincludes a timerand a counter. The storage unitincludes a comparatorand a memory. When photons impinge on the HPD, a trigger signal is outputted from the comparator, causing the photon-number outputted from the A/D converterand the time data outputted from the counterto be stored in the memory