An optical system and method for non-intuitive imaging to detect atmospheric components
An imaging detection and optical system technology, applied in the direction of polarization influence characteristics, etc., can solve the problems of not being used, and achieve the effect of high precision and repeatability
Inactive Publication Date: 2017-12-15
刘学峰
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[0008] Another category of optical parameters is light wave parameters, such as light wave vibration mode, that is, polarization state parameters, light wave vector parameters, and light wave wave surface shape characteristic parameters. These parameters are not used in the structural characterization of intuitive imaging.
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[0044] The light source adopts natural light scattered by the non-polluting atmosphere. Natural light, that is, the light emitted from the sun, absorbed, scattered and reflected by the atmosphere, clouds and the surrounding environment, is irradiated to the environment containing SO 2 , O 3 , CO 2 , NO, Cl 2 、CH 3 -R and other molecules of the measured gas, the asymmetric relationship in the molecular structure includes anisotropic atomic arrangement and atomic bonding in the molecule, as well as the polar characteristics of electron cloud and electron spin, etc., will interact with the light wave and change the light wave. The speed of propagation makes a single polarization state change, such as converting linear polarization to nonlinear polarization, and circular polarization to non-circular polarization, so that one polarization state has different absorption and transmittance relative to another polarization state, that is, changes According to the fluctuation mode of...
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The invention relates to an optical system and method for non-intuitive imaging detection of atmospheric components, comprising: a light source for emitting reference light and detection light; a collection lens for collecting reflection, scattering and luminescence of a measured object; The polarization state is patterned and automatically modulated by a light wave modulation system; an imaging lens that focuses light for imaging; a CCD pixel system and a computer processing system that record the changes of the light field intensity of each pixel by a dynamic patterned scanning method in conjunction with the light wave modulation system. The system and method can instantly image the changes in the structure and composition of the gas to be measured in space, avoid sampling errors, and finally obtain images and atmospheric composition analysis results with higher accuracy and repeatability than other methods. The system does not require special light sources and chemical devices, and is inexpensive; the measurement process is simple and easy to implement, and the system is light in weight, suitable for airborne and aerospace applications.
Description
technical field [0001] The invention relates to a system and method for detecting atmospheric components, in particular to an optical system and method for non-intuitive imaging and detecting atmospheric components. Background technique [0002] The increasingly severe air pollution has made people pay more and more attention to the detection of atmospheric components. At present, there are mainly two types of detection technologies, optical detection and non-optical detection. Among them, the non-optical detection methods mainly include: electrical conductivity method, which is caused by the sampling gas passing through the conductive liquid. The change of conductivity coefficient is used to detect atmospheric components; the chemical electrolysis method is used to detect atmospheric components by changing the electrolytic characteristics caused by the action of the sampled gas and solution; the flame brightness method is used to measure the brightness of the sampled gas bur...
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IPC IPC(8): G01N21/21
Inventor 刘学峰
Owner 刘学峰