X-ray examination apparatus comprising an X-ray image intensifie

Details X-ray examination apparatus comprising an X-ray image intensifie X-ray examination apparatus comprising an X-ray image intensifie

1991-07-24

1992-09-22

Church, Craig E.

X-ray or gamma ray systems or devices

Electronic circuit

Exposure timer

358111, H05G 164

Patent

active

051503964

ABSTRACT:
The X-ray examination apparatus (1) comprises an X-ray image intensifier tube (19) having an entrance screen (21), an exit section (24) having an exit screen (25) and an exit window (27), an optical imaging system (32) and a photosensitive detection device (41). The exit section (24) comprises a fibre optical plate. Between the fibre optical plate and the optical imaging system (32) there is quartz birefringent crystal element (31) which selectively increases the optical spatial frequency of the image processed thereby in order to correct for image aberrations introduced by the fibre optical plate structure.

REFERENCES:
patent: 4220890 (1980-09-01), Beekmans
patent: 4809309 (1989-02-01), Beekmans
patent: 4833625 (1989-05-01), Fisher et al.

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