Multi-mode laser measurement device and laser distance measurement method

A multi-mode laser measurement device, comprising:

• a housing comprising a first end and a second end;
• and
• a laser measurement assembly mounted within the housing and comprising:
• a first emitting module comprising a first emitter, wherein the first emitter is configured to emit a first emitted laser beam having a first wavelength to a target object during operation, and the first emitted laser beam is reflected by the target object into a first reflected laser beam;
• a second emitting module comprising a second emitter, wherein the second emitter is configured to emit a second emitted laser beam having a second wavelength to the target object during operation, the second emitted laser beam is reflected by the target object into a second reflected laser beam, and the second wavelength is different from the first wavelength;
• and
• a receiving module configured to, during operation, receive a reflected laser beam and measure a target distance between the laser measurement device and the target object based on the reflected laser beam, wherein
• the reflected laser beam comprises the first reflected laser beam and/or the second reflected laser beam, and is received by the receiving module after passing through the first end;
• and
• the receiving module comprises a photosensitive element configured to detect laser light of the first wavelength and the second wavelength during operation.