Matrix of photosensitive elements and radiation detector includi

Radiant energy – Invisible radiant energy responsive electric signalling – With or including a luminophor

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25037011, 2505781, G01T 120, H01L 3110

Patent

active

049452436

ABSTRACT:
The invention relates to the processing of images, especially radiological images, by means of a photosensitive matrix (1) permitting the simultaneous acquisition of a plurality of images. The matrix (1) of the invention includes an array of line conductors (L1 to L3) and an array of column conductors (F1 to F3). Photosensitive points (P1 to P9) are formed at each crossing of a line conductor (L1 to L3) with a column conductor (F1 to F3); each photosensitive point having one end (10) connected to the line conductor and the other end (11) connected to the column conductor. According to a feature of the invention, each photosensitive point (P1 to P9) consists of two photosensitive elements (DA, DB) and a capacitor (CI) all connected in series, the two photosensitive elements (DA, DB) having opposite directions of conduction. Consequently, each photosensitive point (P1 to P9) may include two zones (A, B) of floating potential permitting the creation and the storage of two quantities of charge, one of which is proportional to the illumination of one of the photosensitive elements (DA, DB) and the other of which is proportional to the illumination of the other element.

REFERENCES:
patent: 3551761 (1970-12-01), Ruoff
patent: 3660667 (1972-05-01), Weimer
patent: 3753247 (1973-08-01), Rajchman
patent: 4581625 (1986-04-01), Gay et al.
patent: 4660095 (1987-04-01), Cannella et al.
patent: 4672454 (1987-06-01), Cannella et al.
patent: 4675739 (1987-06-01), Catchpole et al.
patent: 4691243 (1987-09-01), Cannella et al.
patent: 4691244 (1987-09-01), Cannella et al.

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