Color image sensor

Details Color image sensor Color image sensor

1985-05-22

1987-05-05

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

35821329, 357 24, 357 30, H04N 312, H01L 2978, H01L 2714

Patent

active

046635351

ABSTRACT:
A contact type color image sensor reads out a document image at its actual size while moving along the length of the document. The photosensitive cell arrays, each having pixel electrodes which prescribe n photosensitive cells (where n is a positive integer), are aligned on the substrate. Filter films are positioned over the cell arrays. The radiated image light is converted into the three primary color components of red, green and blue, and R, G, B color signals necessary for color reproduction of the document image are obtained from the respective cell arrays. The n photosensitive cells are arranged at a predetermined pitch p along the main scanning direction X in each array, and the cell arrays are arranged at a sub-scanning direction pitch q which is larger than the pitch p by a factor of K (where k is larger than 1 and k.times.n is a natural number).

REFERENCES:
patent: 4242694 (1980-12-01), Koike et al.
patent: 4387987 (1983-06-01), Koike et al.
patent: 4542409 (1985-09-01), Ochi
patent: 4543489 (1985-09-01), Harada et al.
patent: 4558365 (1985-12-01), Ochi

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