LIGHT OUTPUT CONTROL DEVICE FOR LASER LIGHT SOURCE

摘要

A light output control device for each of RGB laser light sources is provided with three sets of a semiconductor laser for each of RGB colors, a light output detecting means for detecting a light output of the semiconductor laser, a light output adjusting means for renewing a light output target value, a light output control means for controlling the semiconductor laser in accordance with the light output target value after renewed, and a dividing means for dividing the light output by the output from the light output adjusting means to seek a starting-up ratio of the light output; and a startup judging means for judging the slowest starting-up semiconductor laser in accordance with the result of each dividing means to output each of light output adjusted values, wherein each light output adjusting means renews the light output target value in accordance with the light output adjusted value, each light output control means makes the semiconductor laser operate in consistency with the slowest starting-up semiconductor laser in phase with the renewed light output target value, thereby maintaining the color balance of RGB at the starting-up time.