Constant length laser device.

摘要

A constant length laser device for use with laser generating means (2) which comprises a first movable optical reflector carriage (6) containing at least two reflective surfaces (8,10) disposed at an angle of 90 DEG and arranged to receive a laser beam (4) and deflect and reflect the laser beam (4,4 min ,4 sec ) 180 DEG ; a second movable optical carriage (12) containing at least one reflector (14) arranged to receive the laser beam (4 sec ) from the first movable optical carriage and deflect the beam onto a workpiece (16); and means for synchronizing the movement of the first movable carriage and second movable carriage in the same direction with the fist movable carriage synchronized to move at one half the speed of the second movable carriage.