Protector used for fiber optical path in linear frequency modulation laser range finding system

Abstract

The invention relates to the technical field of engineering measurement and particularly relates to a protector used for the fiber optical path in a linear frequency modulation laser range finding system. The protector comprises an inner layer housing and an outer layer housing which are arranged in a nested manner from inside to outside. The optical fiber is positioned in the inner layer housing. The material of the inner layer housing is red metal and the material of the outer layer housing is plastic. The protector is in a layer-shaped nested housing structure form, the fiber optical path is positioned in the inner layer housing, and the inner layer housing adopts red metal with high heat conductivity as the processing material, so that the good heat conductivity and the thermal melting property of the protector are ensured. The outer layer housing adopts plastic as the processing material. The outer plastic has two functions of preventing influences of external humiture and achieving isolation. Under the dual protection of the inner layer housing and the outer layer housing, the protector can adapt to the humiture change, has the active protection effect on the optical fiber in the inner layer housing, and enables the fiber optical path to work in the humiture temperature of a certain range.

Description

technical field [0001] The invention relates to the technical field of engineering measurement, in particular to a protection device for an optical fiber optical path in a chirp laser ranging system. Background technique [0002] All-fiber optical paths are often used in LFM laser ranging systems. Compared with the traditional space optical path structure, the optical fiber optical path has the characteristics of light weight, less space occupation, convenient installation and debugging, and convenient maintenance. It is widely used in various linear frequency modulation laser ranging systems. However, the optical fiber optical path is easily affected by the temperature and humidity of the environment, resulting in changes in the refractive index of the optical fiber, resulting in changes in the transmission time of light in the optical fiber, which in turn affects the measurement accuracy of the LFM laser ranging system. Therefore, protective measures must be taken for the...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to solve the lack of protective measures for the optical fiber optical path of the existing linear frequency modulation laser ranging system, which is easily affected by the temperature and humidity of the environment, causing the time of light transmission in the optical fiber to change, thereby affecting the system measurement precision problem

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