Laser measurement module and laser radar

A laser radar, comprising a laser measurement system and a data processing circuit, wherein:

• the laser measurement system comprises N laser ranging components, a reflector, and a micro-electro-mechanical system (MEMS) micromirror, wherein:
• N is a positive integer greater than or equal to 2;
• each of the N laser ranging components is configured to emit an emergent light beam onto the reflector;
• the reflector is configured to perform optical path reflecting on the emergent light beam, and emit the reflected emergent light beam onto the MEMS micromirror;
• the MEMS micromirror is configured to (1) change a direction of the emergent light beam to implement two-dimensional scanning, (2) change a direction of an echo light beam, and (3) emit the echo light beam onto the reflector, wherein the echo light beam is a light beam reflected by the emergent light beam emitted onto a target object;
• the reflector is further configured to perform optical path reflecting on the echo light beam, and emit the reflected echo light beam onto each of the N laser ranging components;
• and
• each of the N laser ranging components is further configured to receive the echo light beam, and perform ranging based on a time difference between the emergent light beam and the echo light beam;
• both the N laser ranging components and the MEMS micromirror are connected to the data processing circuit, wherein an included angle a between an incident light beam and the emergent light beam that are on the reflector on a vertical plane has a following relationship with a vertical inclination angle β of the MEMS micromirror and a vertical swing angle ω of the MEMS micromirror:
• α≥ε(2β+ω), wherein
• ε is an installation error factor of the reflector and the MEMS micromirror;
• and
• the data processing circuit is configured to separately obtain data from the N laser ranging components and the MEMS micromirror, and process the data.