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.

Date of Patent:
Oct. 20, 2020

Filed:

Feb. 26, 2019
Applicant:

Hamamatsu Photonics K.k., Hamamatsu-shi, Shizuoka, JP;

Inventors:

Kazuki Horita, Hamamatsu, JP;

Yoichi Kawada, Hamamatsu, JP;

Atsushi Nakanishi, Hamamatsu, JP;

Kazuue Fujita, Hamamatsu, JP;

Hironori Takahashi, Hamamatsu, JP;

Hiroshi Satozono, Hamamatsu, JP;

Assignee:

HAMAMATSU PHOTONICS K.K., Hamamatsu-shi, Shizuoka, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 21/35 (2014.01); G01N 21/3586 (2014.01); G01J 3/42 (2006.01); G01N 21/552 (2014.01); G01N 21/25 (2006.01); G01N 21/31 (2006.01); G01N 21/3581 (2014.01);
U.S. Cl.
CPC ...
G01N 21/3586 (2013.01); G01J 3/42 (2013.01); G01N 21/255 (2013.01); G01N 21/35 (2013.01); G01N 21/552 (2013.01); G01J 2003/425 (2013.01); G01N 21/3581 (2013.01); G01N 2021/3155 (2013.01);
Abstract

An optical measurement device includes a light source configured to output a terahertz wave and coaxial light having a wavelength different from the wavelength of the terahertz wave, coaxially with the terahertz wave; an intensity modulation unit configured to perform intensity modulation of at least the terahertz wave of the terahertz wave and the coaxial light in a predetermined modulation frequency; and a light detection unit configured to synchronously detects each of the terahertz wave and the coaxial light which have acted on a measurement subject via the intensity modulation unit based on the modulation frequency.


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