| 摘要 |
Disclosed is a laser beam scanning system which includes a plurality of laser sources each of which produces a laser beam having a different wavelength. The laser beam component is intensity-modulated with a corresponding color video signal and deflected by an acousto-optical deflector to scan a medium in at least one direction to produce a color image thereon. Because of the color dispersion inherent to the deflector, the angle of deflection is dependent on the wavelength of the laser beam component. To compensate for the color dispersion, a signal processor is provided to adjust the intensity modulation for the corresponding laser beam component in such a manner that each of the laser beam components is intensity-modulated differently from the others in terms of scanning time to obtain substantially the same angle of deflection for all the beam components.
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