SPECTROMETER, WAVELENGTH MEASURING DEVICE, AND SPECTRUM MEASURING METHOD

PROBLEM TO BE SOLVED: To provide a spectrometer capable of improving spectrum resolution when measuring a spectrum using a moire.SOLUTION: A spectrometer 100 or 200 for measuring a spectrum of input light comprises: a fringe forming device which forms a first fringe having a first pitch by separatin...

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Bibliographic Details
Main Author KONISHI TAKESHI
Format Patent
LanguageEnglish
Japanese
Published 18.01.2018
Subjects
COLORIMETRY
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT
MEASURING
PHYSICS
RADIATION PYROMETRY
TESTING
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Summary:PROBLEM TO BE SOLVED: To provide a spectrometer capable of improving spectrum resolution when measuring a spectrum using a moire.SOLUTION: A spectrometer 100 or 200 for measuring a spectrum of input light comprises: a fringe forming device which forms a first fringe having a first pitch by separating the input light; a diffraction grating 103 for dispersing the first fringe; a moire forming device which forms a moire by superposing the dispersed first fringe on a second fringe having a second pitch different from the first pitch; and an imaging element 107 which measures a spectrum of input light by detecting the moire. At least one of the fringe forming device and the moire forming device includes a cylindrical lens array 101 or 205.SELECTED DRAWING: Figure 2 【課題】モアレを利用してスペクトルを測定する際にスペクトルの分解能を向上させることができる分光器を提供する。【解決手段】入力光のスペクトルを測定する分光器１００、２００であって、入力光を分離することにより、第１ピッチを有する第１縞を形成する縞形成器と、第１縞を分散する回折格子１０３と、分散された第１縞を、第１ピッチとは異なる第２ピッチの第２縞に重ね合わせることでモアレを形成するモアレ形成器と、モアレを検出することにより、入力光のスペクトルを測定する撮像素子１０７と、を備え、縞形成器及びモアレ形成器の少なくとも一方は、シリンドリカルレンズアレイ１０１、２０５を含む。【選択図】図２
Bibliography:Application Number: JP20160137012