System for exposing X-ray film to X-rays, to adequate density

Details System for exposing X-ray film to X-rays, to adequate density System for exposing X-ray film to X-rays, to adequate density

1989-04-13

1990-06-19

Howell, Janice A.

X-ray or gamma ray systems or devices

Electronic circuit

Exposure timer

378108, H05G 142

Patent

active

049359452

ABSTRACT:
In a system for exposing X-ray film to X-rays, to adequate density, X-rays emitted from a X-ray tube and passing through an object are incident on a X-ray film through a X-ray pickup device. A X-ray pickup device having a plurality of pickup fields comprises an intensifying screen for converting X-rays into light rays. In each of the pickup fields, a bundle of optical fibers are extended and end faces of the fibers are so arranged as to occupy each of the pickup field with segment pickup field of the optical fibers. The optical fiber bundles are optically coupled to photodetectors, respectively so that light rays are converted into electrical signals.

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