Sample pool capable of achieving multiple reflection and absorption

A technology of multiple reflections and sample cells, applied in the field of optical detection, can solve the problems of limited number of reflections and inability to achieve effective optical path, and achieve the effect of increasing the shuttle stroke and meeting the detection requirements

Inactive Publication Date: 2016-11-16
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
View PDF8 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen from the figure that this method is limited by the size of the spherical mirror, and its reflection times are limited. When measuring ultra-trace gases, it still cannot reach the effective optical path

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Sample pool capable of achieving multiple reflection and absorption
  • Sample pool capable of achieving multiple reflection and absorption
  • Sample pool capable of achieving multiple reflection and absorption

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0025] Such as Figure 5 As shown, a multiple reflection absorption sample cell is characterized in that: it includes a tubular shell 25 sealed at both ends, and a reflective assembly arranged inside the tubular shell 25;

[0026] One of the end faces of the tubular housing 25 is provided with a light incident window 29 and a light exit window 31, and the light incident window 29 and the light exit window 31 are provided with windows made of infrared-transmitting band materials. The tubular housing 25 The two ends of the circumferential surface are respectively provided with an air inlet 33 and an air outlet 35;

[0027] Such as Image 6 As shown, the reflective assembly includes a primary mirror 1 and a secondary mirror 3, the primary mirror 1 is composed of a spherical mirror, and the secondary mirror 3 is composed of two spherical mirrors, that is, a first spher...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention belongs to the technical field of optical detection, in particular to a multi-reflection absorption sample cell, which includes a tubular shell sealed at both ends, and a reflective assembly arranged inside the tubular shell; one end surface of the tubular shell is provided with The light entrance window and the light exit window are provided with windows made of infrared-transmitting materials, and the two ends of the circumferential surface of the tubular shell are provided with air inlets and air outlets. In the present invention, a right-angle mirror is arranged near the edge of the main mirror, and when the reflected light deviates from the main mirror, the right-angle mirror is used to shift the reflection point on the side of the main mirror to form a group of new reflection paths, thereby doubling the reflection stroke ; The shuttle travel of the infrared wave is greatly increased, which meets the detection requirements of ultra-trace gases.

Description

technical field [0001] The invention belongs to the technical field of optical detection, and in particular relates to a multiple reflection absorption sample cell. Background technique [0002] In the prior art, a spectrometer is often used to detect the gas concentration. The principle is that when the infrared beam passes through the gas to be measured, the gas will absorb the infrared signal. According to the Lambert-Beer law, the absorbance of gas molecules is proportional to the absorption path, the concentration of gas molecules and the absorption coefficient of gas molecules. Different gas molecules have different gas molecule absorption characteristics. Therefore, the concentration of absorbed gas molecules can be quantitatively retrieved by performing spectral analysis on the absorbance spectrum after gas absorption. However, when the gas concentration is too low, the absorbance of the gas molecules is weak, and the absorption spectrum is not obvious. At this tim...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/01G01N21/35
CPCG01N21/3504G01N21/01G01N2021/0112
Inventor 李相贤王亚萍石建国童晶晶李胜陈军高闽光张玉钧刘文清
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap