DUAL-DIRECTIONAL LASER RANGEFINDER

摘要

A dual-directional laser rangefinder has a housing with two laser modules and one control module mounted therein. The laser modules emit laser beams toward both sides of the housing and receive the reflected laser beams. The control module computes respectively travel times or the phase differences for the two laser beams from the laser modules, and then computes two distances from the two ends of the housing to the two objects of interest. After adding the length of the housing, the invention obtains an actual total distance between the two objects of interest.

主权项

1. A dual-directional laser rangefinder, comprising:
a housing having two opposite ends; a control module disposed inside the housing; two laser modules mounted respectively on the two opposite ends of the housing, wherein each of the laser modules has a laser emitting end and a laser receiving end and electrically connects to the control module; a display module disposed on the housing and electrically connecting to the control module; and a key module disposed on the housing and having a plurality of keys, each of which electrically connects to the control module; wherein the two laser modules emit laser beams outward in opposite directions of the housing and receive reflected laser beams from two end surfaces whose distance in between is to be determined; the control module computes respectively travel times or phase differences for the laser beams of the two laser modules, thereby calculating respectively two distances from the two laser modules to the two corresponding end surfaces and then obtaining an actual total distance between the two end surfaces.