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1. (WO2017150369) OPTICAL SYSTEM STRUCTURE, OPTICAL MEASUREMENT DEVICE, AND OPTICAL MEASUREMENT METHOD

Pub. No.:    WO/2017/150369    International Application No.:    PCT/JP2017/007063
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Sat Feb 25 00:59:59 CET 2017
IPC: G01N 21/65
G01J 3/44
Applicants: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION
国立大学法人九州大学
USHIO DENKI KABUSHIKI KAISHA
ウシオ電機株式会社
Inventors: OKI Yuji
興 雄司
YOSHIOKA Hiroaki
吉岡 宏晃
MORITA Kinichi
森田 金市
Title: OPTICAL SYSTEM STRUCTURE, OPTICAL MEASUREMENT DEVICE, AND OPTICAL MEASUREMENT METHOD
Abstract:
The purpose of the present invention is to provide an optical system structure that makes it possible to suppress Raman light and improve measurement precision in an optical measurement device that uses a solid or a liquid as a medium in an optical path section thereof. An optical system structure comprising: an optical path section through which observation light generated by irradiating a measurement sample with first light having a wavenumber k1 is transmitted in an optical measurement system; and a light blocking section that blocks light from the outside heading toward the optical path section, and that has a refractive index matched with that of the optical path section so as to reduce noise light inside the optical path section, wherein a solid or a liquid is used as a medium in the optical path section, and a filter member that blocks the advance of second light having a wavenumber k2, which is attributable to a Raman shift that occurs when the first light passes through the optical path section, is provided inside the optical path section.