SPECTROSCOPIC INSTRUMENT AND SPECTROSCOPY

PROBLEM TO BE SOLVED: To prevent an optical path difference from occurring between two linearly polarized lights without using a plurality of birefringent materials when separating light into two linearly polarized lights.SOLUTION: A spectroscopic instrument comprises a birefringent material 50 and...

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Bibliographic Details
Main Author OTO MASANORI
Format Patent
LanguageEnglish
Japanese
Published 13.07.2017
Subjects
COLORIMETRY
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT
MEASURING
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
RADIATION PYROMETRY
TESTING
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Summary:PROBLEM TO BE SOLVED: To prevent an optical path difference from occurring between two linearly polarized lights without using a plurality of birefringent materials when separating light into two linearly polarized lights.SOLUTION: A spectroscopic instrument comprises a birefringent material 50 and an optical member 60. The birefringent material 50 separates light from a polarizer 40 into an ordinary ray o and an extraordinary ray e. The birefringent material 50 emits a first outgoing beam that includes an ordinary ray o component and a second outgoing beam that includes an extraordinary ray e component. The optical member 60 rotates the vibration direction of the first outgoing beam and the vibration direction of the second outgoing beam. The optical member 60 causes the first outgoing beam and the second outgoing beam to enter the birefringent material 50. In the spectroscopic instrument, the optical path length through which the first outgoing beam passes from when it is emitted from the birefringent material 50 to when it enters the birefringent material 50 and the optical path length through which the second outgoing beam passes from when it is emitted from the birefringent material 50 to when it enters the birefringent material 50 are equal to each other.SELECTED DRAWING: Figure 1 【課題】光を２つの直線偏光に分離する場合に、複数の複屈折材料を用いなくても、２つの直線偏光の間に光路差が生じないようにする。【解決手段】分光装置は、複屈折材料５０及び光学部材６０を備えている。複屈折材料５０は、偏光子４０からの光を常光線ｏ及び異常光線ｅに分離する。複屈折材料５０は、常光線ｏの成分を含む第１出射光、及び異常光線ｅの成分を含む第２出射光を出射する。光学部材６０は、第１出射光の振動方向及び第２出射光の振動方向を回転させる。光学部材６０は、第１出射光及び第２出射光を複屈折材料５０に入射させる。この分光装置では、複屈折材料５０から出射してから複屈折材料５０に入射するまでに第１出射光が通過する光路長と、複屈折材料５０から出射してから複屈折材料５０に入射するまでに第２出射光が通過する光路長とが互いに等しい。【選択図】図１
Bibliography:Application Number: JP20160000066