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Optical path system for measuring forward and backward scattering and depolarization ratio of single particulate matter

A technology of forward scattered light and optical path system, which is applied in the field of optical property detection of air pollution particles, to achieve the effect of promoting deeper understanding, improving detection level, and accurate properties of pollutants

Inactive Publication Date: 2020-03-24
INST OF ATMOSPHERIC PHYSICS CHINESE ACADEMY SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide an optical path system for measuring the forward and backward scattering and depolarization ratio of single particles, so as to solve the aforementioned problems in the prior art

Method used

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  • Optical path system for measuring forward and backward scattering and depolarization ratio of single particulate matter
  • Optical path system for measuring forward and backward scattering and depolarization ratio of single particulate matter

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Embodiment

[0036] This embodiment provides an optical path system for measuring the forward and backward scattering and depolarization ratio of a single particle, such as figure 1 As shown, it includes an incident light collimation and depolarization module (1), a laser calibration detection module (2), a single particle scattering module (3), a backward polarized light detection module (4), and a forward scattered light measurement module (5) and beam splitter lenses,

[0037] The incident light collimation and depolarization module (1), the spectroscopic lens, the single particle scattering module (3) and the forward scattered light measurement module (5) are installed in sequence, and the laser calibration detection module ( 2) and the backward polarized light detection module (4) are oppositely arranged on the opposite surface of the splitter lens.

[0038] The incident light collimation and depolarization module (1) is used to generate linearly polarized laser light, and emit the l...

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Abstract

The invention discloses an optical path system for measuring the forward and backward scattering and depolarization ratio of a single particulate matter. The optical path system comprises an incidentlight collimation and depolarization module, a laser calibration detection module, a single particle scattering module, a backward polarized light detection module, a forward scattered light measurement module and a light splitting lens, the incident light collimation and depolarization module, the light splitting lens, the single particle scattering module and the forward scattered light measurement module are sequentially installed, and the laser calibration detection module and the backward polarized light detection module are oppositely arranged on the opposite faces of the light splittinglens. The optical path system is simple in structure and high in stability, by establishing the reasonable combination of a collimating lens and a condensing lens, the optical path system is reasonably designed, and the optical path system is suitable for being widely applied to the pollutant monitoring of the monitoring stations, so that the detection level of the atmospheric pollutant physicalproperties is greatly improved.

Description

technical field [0001] The invention relates to the field of optical property detection of air pollution particles, in particular to an optical path system for measuring the forward and backward scattering and depolarization ratio of single particles. Background technique [0002] At present, the detection of optical properties such as depolarization of air pollution particles is mainly through space-borne and ground-based lidar. The radar emits laser light and receives the volume scattered light of the polluted air mass, and the detection is mainly the overall nature of the polluted air mass. It is inevitable that there will be blind spots. The results of one-by-one screening of the properties of single particles are accurate, but there are relatively few related instruments that can be used for real-time monitoring of the depolarization properties of single particles. The invention achieves the purpose of effectively detecting the irregularity degree of single particle mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/00G01N15/02
CPCG01N15/00G01N15/0211
Inventor 潘小乐田雨王自发
Owner INST OF ATMOSPHERIC PHYSICS CHINESE ACADEMY SCI
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