Gating array laser radar receiving optical system and laser radar

Abstract

The invention provides a gating array laser radar receiving optical system and laser radar. The gating array laser radar receiving optical system comprises: a lens array which comprises a plurality ofself-focusing lenses and is used for receiving echo optical signals; an optical fiber array arranged on the light emitting side of the lens array, wherein the optical fiber array comprises a plurality of optical fibers, and the plurality of optical fibers and the plurality of self-focusing lenses are arranged in a one-to-one correspondence mode; and a coupling grating array structure arranged onthe side, away from the lens array, of the optical fiber array, wherein the optical fiber array transmits echo optical signals into the coupling grating array structure, and the echo optical signals are coupled and transmitted into the silicon-based waveguide array through the coupling grating array structure. According to the gating array laser radar receiving optical system, weak echo optical signals can be efficiently coupled into the silicon-based waveguide, the gating array laser radar receiving optical system has the advantages of being small in size, compact in structure and high in robustness, and the problem that in the prior art, scanning and transmitting laser radar is low in detection precision is solved.

Description

technical field [0001] The invention relates to the fields of optical equipment technology and photoelectric detection technology, in particular to a receiving optical system of a gate array laser radar and a laser radar. Background technique [0002] Lidar (Light Detection and Ranging, Lidar) is a laser that has the advantages of monochromaticity, coherence, and narrow beam as a carrier. Due to the shorter operating wavelength of lidar, it can more accurately detect the distance, speed and angular position of the target to be measured. Therefore, lidar has the advantages of high sensitivity, high resolution, miniaturization, light weight and strong anti-interference. [0003] Lidar technology has high research significance and broad application prospects in both military and civilian applications. The main components of this technology include laser emitting modules, receiving optical systems, detection modules and digital information processing systems. The working envir...

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide a strobe array laser radar receiving optical system and laser radar, to solve the problem of low detection accuracy in the laser radar emitted by point scanning in the prior art

Images