LASER PROJECTION SYSTEM FOR ALIGNMENT

摘要

PURPOSE: A laser projection system for alignment is provided to realize a stable alignment line by removing a cable device causing the non-stability in power supply and information transmission. CONSTITUTION: If first and second irradiating elements(720,740) emit light, the light emitted from the second irradiating element directly proceeds to a reflecting unit(300) while the light emitted from the first irradiating element is reflected from movable reflecting units(760) to change a direction, and then proceeds to the reflecting unit. A reflecting plate of the reflecting unit changes the direction of the light irradiated to the reflecting unit for forming an alignment line. A control unit controls to drive a driving unit(620) in one direction for rotating a ball screw. Rotation movement of the ball screw is converted into rectilinear movement of guide blocks, so that the movable reflecting units become more distant from or close to a center support plate(260) of a housing to accurately control the alignment line.