Compensating device for improving the scanning luminance in a sc

Details Compensating device for improving the scanning luminance in a sc Compensating device for improving the scanning luminance in a sc

1998-10-07

2000-10-17

Pitts, Harold I.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

235454, G06K 710

Patent

active

061335800

ABSTRACT:
A compensating device for improving the scanning luminance of a scanner is disclosed. The compensating device utilizes a plurality of crutch-shaped light tubes to form a light-radiating device, thereby improving the scanning luminance at the two ends of the straight-line portions of the light tubes. Consequently, the object is scanned by a uniform and sufficient radiating light source and precise scanning signals are obtained and processed, thereby improving scanning quality.

REFERENCES:
patent: 4677287 (1987-06-01), Riley

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