High-speed recording apparatus

Details High-speed recording apparatus High-speed recording apparatus

1980-01-14

1982-01-26

Rubinson, Gene Z.

Photocopying

Including fiber optics

355 3R, 355 67, 350 66, G03G 1528, G03B 2754

Patent

active

043125883

ABSTRACT:
The present invention provides a laser scanning apparatus for modulating a laser beam with a modulator into plural independent modulated beams and scanning a plane with the plural beams. In order to prevent a change of the intensity of each beam spot on the scanned plane depending on the exit angle of the beam from the laser, there is provided a converging lens of a focal length f1 between the laser and modulator in such a manner, when the distance from the beam exit of the laser to the converging lens is selected equal to f1+.DELTA.S and the distance from the lens to the modulating point of the modulator is selected approximately equal to f1, as to satisfy the following relation:

REFERENCES:
patent: 3970359 (1976-07-01), Starkweather
patent: 4070089 (1978-01-01), Grafton
patent: 4167324 (1979-09-01), Wu
patent: 4169275 (1979-09-01), Gunning
patent: 4188113 (1980-02-01), Hiraga
patent: 4204725 (1980-05-01), DiStephano et al.
patent: 4213146 (1980-07-01), Maiman
patent: 4232964 (1980-11-01), Nodov et al.
patent: 4251126 (1981-02-01), Minoura et al.

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