Optical scanning system

Details Optical scanning system Optical scanning system

1998-07-21

2000-09-12

Le, N.

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

347248, 347252, H04N 121, H01J 314

Patent

active

061184705

ABSTRACT:
An optical scanning system includes a light source for emitting light beams, a beam deflection unit for deflecting the light beams to sequentially land the light beams along a predetermined scan line, and a light source driving unit. The light source driving unit drives the light source so as to land the light beams on pixel points set at equal intervals along the scan line according to image information by controlling the emission intervals between the light beams and the exposure periods of the respective light beams. The light source driving unit also adjusts the size of spots formed on the pixel points by the light beams according to gray scale values included in the image information. Therefore, in the optical scanning system, gray scale information is expressed by forming the light beam spots of an adjusted size on the pixel points set at equal intervals along the scan line.

REFERENCES:
patent: 4386272 (1983-05-01), Check et al.
patent: 5117243 (1992-05-01), Swanberg et al.
patent: 5138339 (1992-08-01), Curry et al.

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