Opto-mechanical system of semiconductor laser cloud height automatic measuring instrument

Abstract

The present invention relates to an automatic semiconductor laser ceilometer optical-mechanical system which comprises a light path outer cylinder that is connected with a drawtube at the front end. One side of the optical path outer cylinder is connected with a receiving assembly. The top of the lens drum is connected with a lens. The tail of light path outer cylinder is connected with a radiating light source. An aperture in installed in the light path outer cylinder. A beam splitter which is placed aslant with 45 DEG is provided in front of the aperture. The optical path outer cylinder at side of the beam splitter is fixed with a photosensitive diode. A plane mirror parallel with the beam splitter is provided in front of the beam splitter. A reflecting film is coated on the plane mirror at the side facing the lens. The receiving assembly is provided with a color filter which is provided with a micropore diaphragm at the back part. The micropore diaphragm is provided with an APD which is connected at the side surface of receiving assembly. The automatic semiconductor laser ceilometer optical-mechanical system adopts an integrated optical-mechanical designing, reduces the system fabricating cost, reduces a large number of mechanical parts and optical parts, prevents the effect of mechanical stress by the environment variation to the optical path, and increases the long-term stability and reliability of system.

Description

technical field [0001] The invention relates to a cloud height automatic measuring instrument system, in particular to an optical-mechanical system of a semiconductor laser cloud height automatic measuring instrument. Background technique [0002] There are many types of clouds and various shapes, which reflect the movement, stability and water vapor conditions of the atmosphere, and are also one of the important signs that predict future weather changes. Therefore, the measurement of cloud height is of great significance in meteorology, and at the same time, the measurement of cloud height is also of great significance for ensuring aviation safety. Semiconductor laser cloud detection technology is a new type of cloud detection method developed on the basis of atmospheric scattering theory and laser principle. When the laser enters the cloud from the atmosphere, strong backscattering will occur at the boundary of the cloud, and the magnitude of the scattered signal is relat...

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Problems solved by technology

[0003] The purpose of the present invention is to provide an optical-mechanical system of a semiconductor laser cloud height automatic measuring instrument to solve the problems of high cost of the current laser cloud height measurement system, the problem that the emitted beam and the received beam cannot always be coaxial, and the blind area is large

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