Radiant energy – Invisible radiant energy responsive electric signalling – With or including a luminophor
Patent
1974-02-27
1976-01-27
Borchelt, Archie R.
Radiant energy
Invisible radiant energy responsive electric signalling
With or including a luminophor
250369, G01T 120
Patent
active
039354610
ABSTRACT:
The invention relates to a scintillating camera and in particular to an apparatus for determining the position coordinates of a light pulse emitting point on the anode of an image intensifier tube which forms part of a scintillating camera, comprising at least three photomultipliers which are positioned to receive light emitted by the anode screen on their photocathodes, circuit means for processing the output voltages of the photomultipliers to derive voltages that are representative of the position coordinates; a pulse-height discriminator circuit adapted to be fed with the sum voltage of the output voltages of the photomultipliers for gating the output of the processing circuit when the amplitude of the sum voltage of the output voltages of the photomultipliers lies in a predetermined amplitude range, and means for compensating the distortion introduced in the image on the anode screen.
REFERENCES:
patent: 3531651 (1970-09-01), Lieber et al.
patent: 3598994 (1971-08-01), Markle
patent: 3622786 (1971-11-01), Walker et al.
patent: 3793519 (1974-02-01), Mallard et al.
Borchelt Archie R.
Colvin Arthur B.
N.V. Optische Industrie "De Oude Delft"
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