Cylindrical color filter driver for an optical reader

Details Cylindrical color filter driver for an optical reader Cylindrical color filter driver for an optical reader

1992-10-08

1993-09-14

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356418, G01J 350

Patent

active

052451798

ABSTRACT:
A compact, high-speed, high resolution, low-cost color filter driver for use in a color optical reader. The image of a document is reflected through a cylindrical color filter assembly rotated by a motor, causing a charge coupled device to be exposed to the light three times (red, blue, green) as the motor was rotated through a half run, and the document scanning portion moves ahead for one step. The color image of the document is reproduced by repeating the aforesaid procedure again and again through the operation of the single color charge coupled device and the cylindrical color filter assembly.

REFERENCES:
patent: 2406318 (1946-08-01), Brace
patent: 3492478 (1970-01-01), Smith
patent: 4804271 (1989-02-01), Cammann
patent: 5184253 (1993-02-01), Hwang

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