Radiant energy – Automatic/serial detection of similar sources
Patent
1989-02-28
1989-09-26
Fields, Carolyn E.
Radiant energy
Automatic/serial detection of similar sources
G01N 2304
Patent
active
048702773
ABSTRACT:
In a radiation image read-out method and apparatus, a stimulable phosphor sheet carrying a radiation image stored thereon is exposed to stimulating rays which cause the stimulable phosphor sheet to emit light in proportion to the stored radiation energy, and the emitted light is photoelectrically detected to obtain an image signal representing the radiation image. Stimulating rays are made to pass through a beam diameter adjusting device, and the level of the stored radiation energy is detected. The beam diameter of stimulating rays is expanded by the beam diameter adjusting device as the level of the stored radiation energy decreases. In a radiation image read-out and reproducing method, a photosensitive material is exposed to a recording beam modulated with the read-out image signal for recording the radiation image thereon. The recording beam is made to pass through a beam diameter adjusting device, and the beam diameter of the recording beam is expanded by the beam diameter adjusting device as the level of the stored radiation energy decreases.
REFERENCES:
patent: 4661708 (1987-04-01), Agano
Nakajima Nobuyoshi
Saotome Shigeru
Fields Carolyn E.
Fuji Photo Film Co. , Ltd.
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