A stray light suppression device for laser detection of oil and gas pollutants

Abstract

A stray light suppression device for laser detection of oil and gas pollutants, relating to the technical field of optical systems, which includes a receiving optical window, a stray light outlet channel, a light shield, a field diaphragm, a reflector, a focusing lens, and a spherical filter cavity , the photosensitive surface and the Dewar hood, the Dewar hood is L-shaped, one end of the Dewar hood is connected to one end of the stray light outlet channel, the other end of the stray light outlet channel is embedded in the receiving optical window, and the receiving optical window is connected to the stray light outlet channel There is a shading plate between them, a field diaphragm is installed at the exit of the stray light exit channel, a reflector is installed at the exit of the field diaphragm, a spherical filter cavity is arranged under the reflector, and a focusing lens is installed between the reflector and the spherical filter cavity. A lens and a photosensitive surface are installed at the outlet of the spherical filter cavity. The stray light suppression device used for laser detection of oil and gas pollutants suppresses the problem of stray light interference that occurs in the laser detection process, so as to improve the detection accuracy of the optical system and the response ability to target signals.

Description

Technical field: [0001] The invention relates to the technical field of optical systems, in particular to a stray light suppression device for laser detection of oil and gas pollutants. Background technique: [0002] With the rapid development of my country's national economy, oil and gas pollution in water is becoming more and more serious. It not only pollutes the water body environment, aquatic animals and plants, but also has serious harm to human beings. At the same time, during the use and transportation of oil and gas substances, part of them will leak into the soil. The oil and gas pollutants in the soil will seriously affect the quality of groundwater and surface water with the infiltration of precipitation and groundwater, and have a wider impact on human beings. potential harm to society. Therefore, the real-time monitoring and accurate analysis of oil and gas pollutants in water bodies is of great practical significance to deal with pollution accidents in time ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, and provide a stray light suppression device for laser detection of oil and gas pollutants, which suppresses the stray light interference that occurs during the laser detection process, In order to improve the detection accuracy of the optical system and the response ability to the target signal

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