Solid state radiation imager having a reflective and protective

Details Solid state radiation imager having a reflective and protective Solid state radiation imager having a reflective and protective

1991-08-21

1993-01-12

Hannaher, Constantine

Radiant energy

Invisible radiant energy responsive electric signalling

Semiconductor system

250367, 250368, G01T 1202

Patent

active

051792842

ABSTRACT:
A radiation imager having a scintillator mated to a photodetector array has a moisture barrier disposed over at least the portion of the scintillator exposed to the incident radiation. The moisture barrier, which is substantially impervious to moisture, is both radiation transmissive and optically reflective. A pellicle layer may be disposed between the top surface of the scintillator array and the moisture barrier to provide a stable surface to which the moisture barrier can adhere. The moisture barrier normally comprises an optically reflective layer and a moisture sealant layer. The optically reflective layer is comprised of a reflective metal or dielectric layers have different refractive indices and the moisture sealant layer is comprised of a silicone potting compound. A hardened protective window may be situated over the top surface of the moisture barrier.

REFERENCES:
patent: 4029964 (1977-06-01), Ashe
patent: 4158773 (1979-06-01), Novak
patent: 4720426 (1988-01-01), Englert et al.

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