Transmitting and receiving integrated telecentric optical system applied to three-dimensional scanning fiber laser radar

Abstract

The invention discloses a transmitting and receiving integrated telecentric optical system applied to a three-dimensional scanning fiber laser radar and mainly solves the technical problems of low measurement density, low measurement accuracy, large size, poor reliability and short lifetime in the prior art employing a two-dimensional galvanometer to achieve three-dimensional measurement. The transmitting and receiving integrated telecentric optical system applied to the three-dimensional scanning fiber laser radar comprises a driving assembly, a fiber laser assembly, a telecentric lens and areceiving sensor assembly, wherein the fiber laser assembly is used for emitting and receiving laser, the telecentric lens is used for achieving emission laser collimation and receiving laser convergence, the receiving sensor assembly is used for receiving the laser, the telecentric lens, the fiber laser assembly and the receiving sensor assembly are sequentially arranged, and the driving assemblyis used for simultaneously driving the telecentric lens, the fiber laser assembly and the receiving sensor assembly to rotate. With the transmitting and receiving integrated telecentric optical system disclosed by the technical scheme, the problem is solved very well, and the transmitting and receiving integrated telecentric optical system can be applied to the three-dimensional laser radar.

Description

technical field [0001] The invention relates to a transceiver-integrated telecentric optical system applied to a three-dimensional scanning optical fiber laser radar. Background technique [0002] Lidar is an active detection device that uses lasers to emit laser pulses or continuous wave laser beams to target, record and analyze echo signals, and obtain information such as distance, azimuth, height, speed, attitude, and shape of the target. Lidar has the advantages of high angular resolution, high distance resolution, wide ranging range, and strong anti-interference ability. It is widely used in the fields of surface topography mapping, atmospheric detection, and 3D virtual reality robot vision. [0003] In recent years, the rapid development of unmanned driving and mobile robots has put forward higher requirements for 3D LiDAR in terms of size, quality, scanning speed, scanning density, and field of view; existing 3D scanning LiDAR mostly uses two The two-dimensional vibr...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is the problem of low measurement density and measurement accuracy, large size, poor reliability and short lifespan of three-dimensional measurement realized by two-dimensional vibrating mirror in the prior art. A new method for three-dimensional scanning optical fiber is proposed. The laser radar transceiver integrated telecentric optical system, the three-dimensional scanning fiber laser radar has the characteristics of high measurement density and measurement accuracy, small size, good reliability and long life

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