Tailored optical interface for scintillation camera detector

Details Tailored optical interface for scintillation camera detector Tailored optical interface for scintillation camera detector

1996-08-02

1998-06-09

Wong, Don

Radiant energy

Invisible radiant energy responsive electric signalling

With or including a luminophor

250368, G01T 1164, G01T 120

Patent

active

057638870

ABSTRACT:
A scintillation camera detector head comprises a scintillation crystal, a plurality of photomultiplier tubes (PMTs) optically coupled to the scintillation crystal, and a diffractive surface, such as a holographic optical element (HOE), optically coupled to the scintillation crystal. The diffractive surface preferentially reflects or redirects light from a scintillation event which impinges upon the surface toward one or more predetermined PMTs as a function of the angle of incidence or the location of the event. Light emitted under a peak PMT can be preferentially reflected or transmitted away from the peak PMT and toward the surrounding PMTs to reduce spatial resolution modulation. Alternatively, light impinging on the surface from an event can be directed toward the peak PMT and away from surrounding PMTs to achieve greater isolation of events.

REFERENCES:
patent: 3814938 (1974-06-01), Martone et al.
patent: 4187427 (1980-02-01), Cusano
patent: 4284891 (1981-08-01), Pergrale et al.
patent: 4532425 (1985-07-01), Abileah et al.
patent: 4658141 (1987-04-01), Wilt et al.
patent: 5616924 (1997-04-01), Petriillo
Laser Focus World, Jun. 1996, High-Power transmission grating, p. 148.
Polaroid Imagix.TM. Holographic Reflectors advertisement, (date unknown).

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