| 摘要 |
PURPOSE:To reduce the irregularity in a picture quality due to an element or a circuit or the like by providing a connecting means for connecting one of two image forming means and one of two image signal forming means in a prescribed sequence. CONSTITUTION:An input image signal is changed over every one line by a distributor 9 controlled by a controller 8. Comparators 1, 2 compare the voltage such as a chopping wave from a reference wave generator 11 with the input signal, pass through laser drivers 3, 4 only for the time corresponding to the level of the input signal, and laser beams 5, 6 are projected to from a reproducing image. A switching circuit 10 is integrated between the comparators 1, 2 and the laser drivers 3, 4, the combination of the comparators 1, 2 and the laser beams 5, 6 is changed by the controller 8 to draw the image. Thereby, the influence of the respective circuits are distributed and the irregularity and the unevenness do not outstand.
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