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Diffraction spectrum measurement of grating plane mirror and its applications

A measurement system and diffraction spectrum technology, applied in the use of diffractive elements to generate spectrum, absorption/scintillation/reflection spectrum, spectrum investigation, etc.

Inactive Publication Date: 2003-07-23
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Using a spectrometer to measure the diffraction spectrum of a grating is a spectral measurement method with a simple principle and a clear structure. However, during the measurement process, both the collimator and the telescope are required to be perpendicular to the grating surface, and the method of half adjustment is required. The operation process is time-consuming and laborious. It is difficult to adjust to an accurate measurement state. For this reason, we have invented "vertical plane mirror and its application" (patent No. 92105476.9 authorized), and "back-coated reflection grating" (patent No. 96102159.4), and applied it to grating diffraction In the experimental teaching of spectrum, good results have been achieved

Method used

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  • Diffraction spectrum measurement of grating plane mirror and its applications
  • Diffraction spectrum measurement of grating plane mirror and its applications
  • Diffraction spectrum measurement of grating plane mirror and its applications

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0009] Embodiment 1: Two movable and foldable bases form a 60° horizontal support in a movable manner, the thickness of the groove is 2mm, the thickness of the double-sided reflective plane mirror B and the back coated reflective grating C are both 2mm and The thickness is the same; the two sides of the double-sided reflective plane mirror B are coated with semi-reflective film, and the back is coated with reflective grating C. It is composed of two surfaces, the grating stripe surface I and the semi-reflective surface II. There are 100 / mm transmission grating stripes, semi-reflective surface II is coated with semi-reflective light analysis film, and the light analysis film is vacuum-coated with magnesium fluoride. The ratio of the transmitted light intensity to the reflected light intensity of the semi-reflective surface II is 50:50.

[0010] The specific operation steps used are: (1) The two bases of the movable foldable horizontal bracket A are movable to form 60°, placed o...

Embodiment approach 2

[0011] Embodiment 2: Two movable and foldable bases form a 90° horizontal support A in a movable manner, the thickness of the groove is 2mm, the thickness of the double-sided reflective plane mirror B and the back coated reflective grating C are both 2mm and the thickness of the groove The thickness is the same; the two sides of the double-sided reflective plane mirror B are coated with semi-reflective film, and the back is coated with reflective grating C. It is composed of two surfaces, the grating stripe surface I and the semi-reflective surface II. There are 300 lines / mm of transmission grating stripes, the semi-reflective surface II is coated with a semi-reflective light analysis film, and the light analysis film is vacuum-plated magnesium fluoride surface, the ratio of the transmitted light intensity to the reflected light intensity of the semi-reflective surface II The specific operation steps used for 40:60 are the same as those in Embodiment 1.

Embodiment approach 3

[0012] Embodiment 3: Two movable and foldable bases form a 100° horizontal support A in a movable manner, the thickness of the groove is 2mm, the thickness of the double-sided reflective plane mirror B and the back coated reflective grating C are both 2mm and the groove The thickness of the double-sided reflective plane mirror B is coated with a semi-reflective film on both sides, and the back is coated with a reflective grating C. It is composed of two surfaces, the grating stripe surface I and the semi-reflective surface II. The grating stripe surface I adopts the holographic interference method. It is engraved with 500 / mm transmission grating stripes, semi-reflective surface II is coated with semi-reflective light analysis film, and the light analysis film is coated with silicon dioxide by hydrolysis method, the transmitted light intensity and reflected light intensity of semi-reflective surface II The ratio is 60:40, and the specific operation steps used are the same as tho...

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Abstract

The invention belongs to the technique area of the optical measurement and optical instruments. The two base seats with the same horizontal base plane constitute the movable folding horizontal supporter. A. the half-reflection film is coated on both sides of the double-sided reflection plane mirror B. The reflection grating C with the film being coated on the backsdie includes the grating fringe surface 1 and the half-reflection surface 2. The high-density transmission grating is made on the surface 1. The half reflection film, which provides the reflection effect for the auxiliary light in the telescope, is coated on the surface 2. The system replaces the plane mirror and the grating utilized in the grating diffraction spectral measurement of spectrometers.

Description

technical field [0001] The grating plane mirror diffraction spectrum measurement system and its application of the present invention belong to the technical fields of optical measurement, optical instruments, etc., and are specifically a diffraction spectrum measurement instrument. technical background [0002] Using a spectrometer to measure the diffraction spectrum of a grating is a spectral measurement method with a simple principle and a clear structure. However, during the measurement process, both the collimator and the telescope are required to be perpendicular to the grating surface, and the method of half adjustment is required. The operation process is time-consuming and laborious. It is difficult to adjust to an accurate measurement state. For this reason, we have invented "vertical plane mirror and its application" (patent No. 92105476.9 authorized), and "back-coated reflection grating" (patent No. 96102159.4), and applied it to grating diffraction In the experim...

Claims

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Application Information

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IPC IPC(8): G01J3/18G01J3/28G01J3/42
Inventor 贺晓宏汤洪明李君良魏循王纪龙王云才
Owner TAIYUAN UNIV OF TECH
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