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Multiplying light path, gas cell and spectrograph

A gas cell and optical path technology, applied in the fields of multiplier optical paths, gas cells and spectrometers, can solve the problems of reducing the intensity of light emitted from the gas cell, affecting the signal-to-noise ratio of the optical system, high beam energy, etc., achieving simple structure, optical path multiplication, The effect of long light path

Pending Publication Date: 2022-02-25
浙江航天恒嘉数据科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the reflection and transmission efficiencies of the beam splitter are usually 50% respectively. In this scheme, the incident beam and the outgoing beam are respectively reflected or transmitted through the beam splitter. The beam splitter itself will cause an additional 75% of the initial incident beam. Energy loss, the transmission or reflection of the beam splitter to the incident beam and the outgoing beam will lose too much beam energy, which will additionally reduce the outgoing light intensity of the gas cell and affect the signal-to-noise ratio of the optical system

Method used

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  • Multiplying light path, gas cell and spectrograph
  • Multiplying light path, gas cell and spectrograph
  • Multiplying light path, gas cell and spectrograph

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Such as Figure 1-Figure 3 As shown, the present embodiment provides a multiplier optical path, including a light beam reflective lens group 11 and a knife-edge prism reflector 12 having two reflective surfaces and intersecting the two reflective surfaces, and the knife-edge prism reflector 12 is arranged on the beam One side of the reflective lens group 11, the incident light beam is reflected to the light beam reflective lens group 11 by the knife-edge prism reflector 12, and is reflected back to the knife-edge prism reflector after multiple reflections in the light beam reflective lens group 11 mirror 12, and the outgoing light beam reflected by the knife-edge prism reflector 12 is emitted along the same direction of the incident light beam, so that the optical path can be multiplied by the light beam reflecting lens group 11, and the knife-edge prism reflector 12 Low loss of beam energy.

[0033]In the above-mentioned technical scheme, said light beam reflecting mi...

Embodiment 2

[0039] Such as Figure 4-Figure 8 As shown, the present embodiment provides a gas cell, including a housing 2 and a multiplier optical path as described in Embodiment 1, the housing 2 is arranged along the front and rear direction, and the housing 2 has an incident window 21 and an exit window 22, and the incident window 21 and the exit window 22 are relatively arranged on both sides of the front end of the housing 2, the multiplier optical path is arranged in the housing 2, and the knife-edge prism reflector 12 is located at the incident Between the window 21 and the exit window 22, the incident light beam enters the housing 2 through the incident window 21 and is reflected by the blade prism reflector 12 to the light beam reflective lens group 11, and is transmitted by the light beam The reflective lens group 11 is retroreflected to the blade prism reflector 12, and is emitted through the exit window 22. Its structure is simple. By setting the incident window and the exit wi...

Embodiment 3

[0045] This embodiment provides a spectrometer including the gas cell described in Embodiment 2, which has high sensitivity, requires less sample volume, and has high sensitivity.

[0046] In each of the above embodiments, the number of beam reflections inside the multiplier optical path can be increased by adjusting the angles of the knife-edge prism reflector, the second concave spherical reflector, the third concave spherical reflector and the fourth concave spherical reflector, The number of beam reflections that can be produced can be expressed as the following formula: 4(N is +1) or 4(N rs +1), where N is is the number of incoming spots produced by the incoming beam on the surface of the first concave spherical mirror, N rs is the number of return light spots generated by the return light beam on the surface of the first concave spherical reflector, the number of the entry light spots on the surface of the first concave spherical reflector is equal to the number of ret...

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Abstract

The invention discloses a multiplication light path, a gas cell and a spectrograph, the multiplication light path comprises a light beam reflection lens group and a cutter point prism reflector which is provided with two reflection surfaces and is intersected with the two reflection surfaces, and the cutter point prism reflector is arranged on one side of the light beam reflection lens group, an incident light beam is reflected to the light beam reflection lens group through the cutter point prism reflection mirror and is reflected back to the cutter point prism reflection mirror after being reflected for multiple times in the light beam reflection lens group, and an emergent light beam obtained after a return light beam is reflected by the cutter point prism reflection mirror is emitted out in the same direction of the incident light beam, in this way, multiplication of the optical path can be achieved through the light beam reflection lens set, and in addition, loss of light beam energy by the cutter point prism reflection mirror is extremely low.

Description

technical field [0001] The invention belongs to the field of spectroscopic equipment, and in particular relates to a multiplication optical path, a gas pool and a spectrometer. Background technique [0002] The optical gas cell is one of the important devices for spectral quantitative analysis. Increasing the optical path of the gas cell can enhance the spectral absorption signal and improve the sensitivity of gas detection. The traditional White gas cell structure increases the optical path, the volume of the gas cell will also increase, and the measurement response time will be increased. On the other hand, the size of the gas cell will increase, which is not conducive to the integration of gas analyzers. [0003] The patent document with the document number CN112683804A discloses a return-type multiplier optical path, a gas cell and a spectrometer. A concave spherical reflector with the same curvature radius is set at the original light exit position of the White cell to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/03G01N21/25G01N21/31G02B17/02G02B17/06
CPCG01N21/0303G01N21/03G01N21/31G01N21/255G02B17/023G02B17/0657G02B17/0668G01N2021/0389G01N21/031
Inventor 张志勇卢德清徐洁倩
Owner 浙江航天恒嘉数据科技有限公司
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