Optical radiation sensing assembly with increased resolution

Details Optical radiation sensing assembly with increased resolution Optical radiation sensing assembly with increased resolution

1992-07-30

1993-08-10

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

25037008, H01J 4014

Patent

active

052351769

ABSTRACT:
A high-resolution radiation detector cell array has a planar substrate, with multiple switching circuits, interposed between a detector substrate and a subsequent substrate containing high-sensitivity preamplifiers; each of the middle-substrate switching circuits operates to substantially continuously connect cyclic different ones of an assigned different set of the array cells to an associated single one of multiple preamplifiers. In a N.times.M array of cells used with a C column-by-R row switching subassembly, a total array of (N/C).times.(M/R) preamplifiers are needed. The generally-planar detector, switch and preamplifier substrates can be connected using metallic "bump" contacts; the switch layer material may be selected to have a CTE between the CTEs of the detector and preamplifier layers.

REFERENCES:
patent: 4659928 (1987-04-01), Tew
patent: 4670653 (1987-06-01), McConkle et al.
patent: 4810881 (1989-03-01), Berger et al.
patent: 5023455 (1991-06-01), Vanstraelen

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