System for overall color correction of color picture information

Details System for overall color correction of color picture information System for overall color correction of color picture information

1976-07-12

1978-05-02

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

Multicolor picture

355 88, 358 6, 358 76, G03B 2776

Patent

active

040871762

ABSTRACT:
A color correction system contains a plurality of color channels which each contain a dichroic mirror and an electro-optical modulator. An unpolarized light source shining through a color transparency serves as the input to each channel, and each color is individually controlled by the electro-optical modulator in its respective channel. The colors of each channel are then recombined after correction. In another embodiment of the invention, each channel further includes black and white film storage means to store the color image of the particular channel or inexpensive black and white film for subsequent reconstruction as a color picture.

REFERENCES:
patent: 2776335 (1957-01-01), Mann
patent: 2947810 (1960-08-01), Horsley
patent: 3120782 (1964-02-01), Goddard et al.
patent: 3588246 (1971-06-01), July
patent: 3697174 (1972-10-01), McCune
patent: 3702733 (1972-11-01), Sokolow
patent: 3772465 (1973-11-01), Vlahos et al.
patent: 3795761 (1974-03-01), Metzger

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