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. 01, 2020
Filed:
Dec. 26, 2018
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventor:
Ryohei Kuri, Matsumoto, JP;
Assignee:
Seiko Epson Corporation, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01J 1/44 (2006.01); G01J 3/28 (2006.01); G01J 3/26 (2006.01);
U.S. Cl.
CPC ...
G01J 1/44 (2013.01); G01J 3/26 (2013.01); G01J 3/28 (2013.01); G01J 3/2803 (2013.01); G01J 2001/444 (2013.01);
Abstract
A spectroscopic measurement device includes a light receiving element that receives light and outputs a light receiving signal, a variable amplification circuit that amplifies the light receiving signal which is input, and a dark voltage correction unit that calculates a correction coefficient that is a rate of change of a dark voltage value with respect to gains, based on an output value of the variable amplification circuit with each value of two or more gains which are equal to or greater than a predetermined value in an environment where no light is incident on the light receiving element.