Optical beam splitting method and an optical beam splitting/modu

Details Optical beam splitting method and an optical beam splitting/modu Optical beam splitting method and an optical beam splitting/modu

1988-12-16

1990-10-02

Arnold, Bruce Y.

350358, G02B 2714, G02F 133

Patent

active

049603205

ABSTRACT:
An optical beam splitting method and optical beam splitting/modulating method for recording halftone plate images on a recording material through controlling a light exposing device by image signals obtained by photoelectric manipulation of an original image. Two light beam splitters are used so that a single light beam can be split into a plurality of split light beams which are lined up in two rows and shifted by one-half pitch with respect to each other and then modulated in multi-channel ultrasonic modulators, one row of the light beams being modulated with a delay without causing crosstalk. The number of split beams to be modulated is approximately doubled compared to a conventional system, and the size of the dots on the recording material can be decreased so that the image resolution is remarkably improved.

REFERENCES:
patent: 4362361 (1982-12-01), Campbell et al.
patent: 4592621 (1986-06-01), Amano et al.
patent: 4624534 (1986-11-01), Amano
patent: 4701012 (1987-10-01), Kaiser
patent: 4867542 (1989-09-01), Smimazu et al.

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