Light beam scanning read-out apparatus and recording apparatus

Details Light beam scanning read-out apparatus and recording apparatus Light beam scanning read-out apparatus and recording apparatus

1986-09-26

1988-10-18

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

350358, G02F 111

Patent

active

047789913

ABSTRACT:
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 coupler for converging 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 converted light with respect to the optical waveguide, and a photodetector 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.

REFERENCES:
patent: 3676592 (1972-07-01), Foster
patent: 3851951 (1974-12-01), Eveleth
patent: 4093976 (1978-06-01), Das
patent: 4455485 (1984-06-01), Hosaka et al.
patent: 4523803 (1985-06-01), Arao et al.
patent: 4693548 (1987-09-01), Tsunoi

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