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:
Aug. 12, 2025

Filed:

Jan. 02, 2024
Applicant:

Shimadzu Corporation, Kyoto, JP;

Inventor:

Takuya Yonekura, Kyoto, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 21/85 (2006.01); G01N 21/05 (2006.01);
U.S. Cl.
CPC ...
G01N 21/85 (2013.01); G01N 21/05 (2013.01);
Abstract

An optical part () including a measurement cell (), a light source part () that emits light to be emitted to the measurement cell (), a light receiving element (), and a shutter () that shields light to the light receiving element (), a storage part (), a controller (), and a calculator (). The optical part () includes a temperature control element () for adjusting a temperature of the optical part (), the controller () is configured to control the temperature control element () so that a temperature of the optical part () becomes a target temperature which is set in advance, and to execute, at least in a case where a measured value of the dark current at the target temperature is not stored in the storage part (), measurement of the dark current immediately after a transition from an unstable state to a stable state, the storage part () stores a measured value of the dark current acquired in the measurement, and the calculator is configured to continuously use a same measured value of the dark current in the calculation processing while the stable state of the temperature of the optical part continues.


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