Apparatus for maintaining image digitization in parallel optical

Details Apparatus for maintaining image digitization in parallel optical Apparatus for maintaining image digitization in parallel optical

1974-01-02

1976-01-27

Stolwein, Walter

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

250568, 340173LS, 235152, H01J 3912

Patent

active

039354415

ABSTRACT:
Apparatus for maintaining image definition and intensity in optical image processing operations. The apparatus comprises an improved photosensitive device responsive to an applied radiation image pattern for establishing internal electric fields each of which are representative of the intensity of different portions of the applied pattern. Associated with the photosensitive device are a plurality of transparent, conductive targets or conductors aligned to receive the different portions of the applied radiation pattern and to establish discrete internal fields in the device which are uniform over the area of each target notwithstanding any non-uniformities that might exist in the intensity distribution of any of the portions of the applied pattern. The apparatus is especially suitable for use in conjunction with parallel optical digital processing systems in which digital data is represented by an array of radiation image bits of differing intensity and is directed through an optical circuit to be processed in a desired manner.

REFERENCES:
patent: 3081402 (1963-03-01), Van Santen
patent: 3440620 (1969-04-01), French
patent: 3499112 (1970-03-01), Heilmeier et al.
patent: 3517206 (1970-06-01), Oliver
patent: 3700902 (1972-10-01), Buchan
patent: 3716290 (1973-02-01), Borel et al.
Hornberger: I. B. M. Technical Disclosure Bulletin; Vol. 12; No. 10; 3/70 pp. 1697, 1698.

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