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1. (WO2018008215) INFRARED RAY DETECTOR AND RADIATION THERMOMETER

Pub. No.:    WO/2018/008215    International Application No.:    PCT/JP2017/014210
Publication Date: Fri Jan 12 00:59:59 CET 2018 International Filing Date: Thu Apr 06 01:59:59 CEST 2017
IPC: G01J 1/02
G01J 1/06
G01J 5/06
G01J 5/12
Applicants: HORIBA, LTD.
株式会社堀場製作所
Inventors: FUJINO, Sho
藤野 翔
Title: INFRARED RAY DETECTOR AND RADIATION THERMOMETER
Abstract:
In order to provide a radiation thermometer in which infrared rays emitted from a lens barrel or a component disposed inside the lens barrel are prevented from entering an infrared ray sensor, in which the error of temperature measurement caused by autologous infrared rays is reduced, and which enables high-precision temperature measurement even when the temperature in the surrounding environment greatly changes, the present invention is provided with: a lens barrel 1 having an infrared-ray introduction port 11 formed on a leading end side thereof; an infrared ray sensor 3 disposed at a base end side thereof so as to face, in the lens barrel 1, the infrared-ray introduction port 11; a first diaphragm 21 provided so as to separate the infrared-ray introduction port 11 and the infrared ray sensor 3 from each other in the lens barrel 1; an infrared-ray absorption mechanism 4 provided on at least a part of an internal end surface at the base end side of the lens barrel 1 or on at least a part of an external surface of the infrared ray sensor 3; and a reflection mechanism 5 provided on at least a part of an internal circumferential surface at the base end side relative to the first diaphragm 21 in the lens barrel 1 or on at least a part of the infrared ray sensor 3 side of the first diaphragm 21.