Light beam scanning read-out apparatus and recording apparatus.

摘要

A light beam scanning read-out apparatus and a light beam scanning recording apparatus comprise an optical system for converting light guided inside of an optical waveguide into collimated optical wave, a device for generating surface acoustic waves which deflect the guided optical wave, a drive circuit for operating the surface acoustic wave generating device so that the frequency of the surface acoustic waves changes continuously, and a focusing grating couplerforcon- verging the guided and deflected optical wave at a space outside of the optical waveguide. The read-out apparatus further comprises a sub-scanning device for moving a read-out original exposed to the converged light with respect to the optical waveguide, and a photodector for detecting light obtained from the read-out original. The recording apparatus further comprises a sub-scanning device for moving a light-sensitive material exposed to the converged light with respect to the optical waveguide, and a modulator for modulating the guided optical wave with an image signal.