Radiant energy – Invisible radiant energy responsive electric signalling – With or including a luminophor
Patent
1993-02-19
1994-10-04
Fields, Carolyn E.
Radiant energy
Invisible radiant energy responsive electric signalling
With or including a luminophor
378 65, G01T 120
Patent
active
053528964
ABSTRACT:
A radiation converter (1) receives high energy radiation (X) at a first major surface (1a) and emits light (0) from a second major surface (1b). A detector (2) is laterally displaced from the converter (1) so as to be positioned away from the high energy radiation (X). A deflector (3) deflects light emitted by the converter (1) towards the detector (2). A baffle (40) is positioned adjacent the second major surface (1b) of the converter (1). The baffle (40) has an array of baffle plates (4) with light absorbing surfaces (4a) extending transversely of the second major surface (1b) in a direction generally along the optical path (P) to the detector (2). The baffle plates (4) act to absorb light (0') reflected back to and scattered from the second major surface (1b) so as to reduce the amount of reflected or scattered light (0') eventually received by the detector enabling an improvement in image contrast.
REFERENCES:
patent: 3011057 (1961-11-01), Anger
patent: 4297580 (1981-10-01), Juner et al.
patent: 4514632 (1985-04-01), Barrett
patent: 4829552 (1989-05-01), Rossi et al.
Fields Carolyn E.
Slobod Jack D.
U.S. Philips Corporation
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