An ultra-low stray light grating spectrometer

A grating spectrometer and stray light technology, applied in the field of ultra-low stray light grating spectrometer, can solve the problems of affecting the measurement accuracy, low measurement accuracy, large volume, etc., to achieve the suppression of reflection or scattering, good application value, and Very low astigmatism effect
CN105004422BActive Publication Date: 2017-10-31安徽宝龙环保科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
安徽宝龙环保科技有限公司
Publication Date
2017-10-31

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Abstract

The invention discloses an ultra-low stray light grating spectrometer, which comprises an incident slit, a collimating mirror seat, a collimating mirror, a grating seat, a grating, a converging mirror seat, a converging mirror, and a CCD detector. The collimating mirror seat, Both the grating base and the converging mirror base have a light-facing surface, wherein the light-facing surfaces of the collimating mirror base and the converging mirror base are obliquely arranged, and a stereoscopic diaphragm is also installed at the front entrance of the CCD detector, so The three-dimensional diaphragm has two ports, a large port and a small port, wherein the small port of the stereo diaphragm serves as the incident port of the converged light beam, and the large port is connected to the front entrance of the CCD detector. The invention solves the problem that the grating spectrometer has a lot of stray light, the stray light is ultra-low, and has good economic effect.
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Description

technical field

[0001] The invention relates to a grating spectrometer measuring device, in particular to an ultra-low stray light grating spectrometer. Background technique

[0002] Such as figure 1 As shown, a traditional grating spectrometer includes an entrance slit 1 , a collimating mirror 3 , a grating 5 , a converging mirror 7 , and a CCD detector 9 . The principle is as follows: the light beam passes through the incident slit 1 and reaches the collimating mirror 3 and becomes parallel light after one reflection; the parallel light enters the grating 5 for dispersion and then reaches the converging mirror 7, and then is reflected twice by the converging mirror A fine convergent dispersed linear light beam is formed, which is received by the CCD detector 9 .

[0003] However, the actual situation is that it is impossible for the light beam to completely match the collimating mirror 3 , the grating 5 and the converging mirror 7 after entering the incident slit 1 . Wh...

Claims

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