Laser ranging optical system in dynamic scanning state

Abstract

The invention discloses a laser ranging optical system in a dynamic scanning state. The laser ranging optical system comprises a pulse laser and a laser detector. Comprising a laser emitting system, a two-dimensional scanning mirror, a reflex mirror and a laser receiving system which are sequentially arranged in the direction of an optical axis. The normal directions of the two-dimensional scanning mirror and the reflex reflecting mirror are arranged at an angle of 45 degrees with the optical axis direction; the laser receiving system comprises a pitching scanning reflector and an azimuth scanning reflector, and the normal direction of the pitching scanning reflector and the azimuth scanning reflector and the optical axis direction are arranged at an angle of 45 degrees; the angles of the two-dimensional scanning mirror, the pitching scanning reflector and the azimuth scanning reflector can be adjusted. The change of the detection angle of the receiving system is realized by adjusting the angles of the two-dimensional scanning mirror, the pitching scanning reflector and the azimuth scanning reflector. The pitching and azimuth scanning reflecting mirror in the parallel light can reduce the size of the reflecting mirror, reduces the requirements for the positioning precision and the required rotation adjustment time, and achieves the purpose of obtaining the target distance information in a dynamic scanning state.

Description

technical field [0001] The invention relates to the field of laser optics with scanning ranging capability, in particular to a laser ranging optical system in a dynamic scanning state. Background technique [0002] In recent years, with the vigorous development of optoelectronic technology, there is a huge demand and broad development prospects for target detection and tracking at home and abroad. However, the identification objects are becoming more and more diverse, and the identification environment is more complex and changeable, requiring the system to have good adaptability and survival. ability. [0003] Photoelectric detection systems are generally equipped with various active and passive detection methods such as infrared, television, and laser. In the application mode of laser ranging, infrared or television sensors are generally used to extract targets. The system enters a stable tracking state for the target and emits laser light Laser ranging can obtain the dis...

AI Technical Summary

Problems solved by technology

[0003] Photoelectric detection systems are generally equipped with various active and passive detection methods such as infrared, television, and laser. In the application mode of laser ranging, infrared or television sensors are generally used to extract targets. The system enters a stable tracking state for the target and emits laser light Laser ranging can obtain the distance information of the target. This method can only realize the tracking and ranging of a single target or a maximum of two targets within a 90° range. It has gradually failed to meet the needs of rapid acquisition of photoelectric 3D information. For laser ranging technology , there are few studies on the stable adjustment and fast back-scanning of the laser optical axis

At present, there is a lack of a laser ranging system in a dynamic scanning state, and the rapid acquisition of target distance information in a dynamic scanning state cannot be achieved

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