INPUT DEVICE FOR POSITION RECOGNITION, USING LAY TRACE

摘要

A device for inputting position coordinates of a reflector by tracing of an optical beam is provided to easily find out the reflector by splitting a laser into two beams with a double-sided mirror having a hole and disposing the irradiated light and the reflected light on the same optical axis. A position coordinate input device(100) using a laser(300) is composed of a laser generating unit(110); a double-sided mirror(120) having a hole for dividing the laser into irradiated light(310) and reference light(315); a rotary mirror(130) for the irradiated light, exactly aiming the irradiated light at a reflector(200); a rotary mirror(135) for the reference light, exactly aiming the reference light at the reflector; an imaging lens(140) making the reflected light of the reflector into an image; and an image sensor(150) changing the image into image information.