Image intensifier tube target and image intensifier tube with a

Details Image intensifier tube target and image intensifier tube with a Image intensifier tube target and image intensifier tube with a

1985-01-22

1987-03-03

DeMeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Image pickup tube

350 9627, 313475, H01J 3126, G02B 2326

Patent

active

046478116

ABSTRACT:
A variable gain R.I.I. target is obtained by using an optical fibre board, whose face on the R.I.I. side has blind holes containing two types of granular luminescent materials having different luminous efficiencies and which are separated by a barrier layer. The electron beam from the R.I.I. photocathode is subject to two different accelerating voltages, the lower accelerating voltage exciting the luminescent material with the lower luminous efficiency and the higher accelerating voltage exciting the luminescent material with the higher luminous efficiency. Application to image intensifier tubes, used more specifically in radiology and fluoroscopy.

REFERENCES:
patent: 3237039 (1966-02-01), Fyler
patent: 3243642 (1966-03-01), Gebel
patent: 3522367 (1970-07-01), Jones et al.
patent: 3712986 (1973-01-01), Collings
patent: 4029965 (1977-06-01), Carlson et al.
patent: 4264408 (1981-04-01), Benham
patent: 4346326 (1982-08-01), Driard et al.

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