X-ray or gamma ray systems or devices – Electronic circuit – Exposure timer
Patent
1990-09-10
1991-08-27
Fields, Carolyn E.
X-ray or gamma ray systems or devices
Electronic circuit
Exposure timer
378 98, 358111, H05G 164
Patent
active
050440039
ABSTRACT:
Image flicker can be prevented by applying vertical image compression to the entrance screen of a television pick-up tube in a X-ray imaging system. To this end, an X-ray imaging system is provided with an anamorphic optical system. The compressed image is displayed on a television monitor in the correct proportions when the image detection face, scanned by the electron beam, in the television pick-up tube is adapted in conformity with the image compression.
REFERENCES:
patent: 4193089 (1980-03-01), Brougham et al.
patent: 4355330 (1982-10-01), Fukui
patent: 4432014 (1984-02-01), Ross et al.
patent: 4809071 (1989-02-01), Yokouchi et al.
patent: 4852139 (1989-07-01), Sandrik et al.
patent: 4918534 (1990-04-01), Lam et al.
Fields Carolyn E.
Porta David P.
Squire William
U.S. Philips Corporation
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