LASER RANGE FINDER USING OPO VARIABLE FREQUENCY PRINCIPLE

摘要

A laser range finder using a variable frequency principle is provided to reduce the size and the weight of the laser finder by using YAG laser. A laser range finder using a variable frequency principle includes a light emitting unit(30) and a light receiving unit(50). The light emitting unit(30) irradiates laser beams toward a target object to be measured by including a nonlinear optical crystal. The light receiving unit(50) receives laser beams reflected from the target object. The optical crystal includes an optical parametric oscillation crystal. The optical parametric oscillation crystal includes beta-barium borate(BBO). The light emitting unit(30) includes a Q-switch for sending laser having the strong pulse by using the optical parametric oscillation crystal.