Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1989-03-31
1991-01-22
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
357 75, H01J 4014
Patent
active
049872958
ABSTRACT:
A compound imager consists of two or more individual chips, each with at least one line array of sensors thereupon. Each chip has a glass support plate attached to the side from which light reaches the line arrays. The chips are butted together end-to-end to make large line arrays of sensors. Because of imperfections in cutting, the butted surfaces define a gap. Light entering in the region of the gap is either lost or falls on an individual imager other than the one for which it is intended. This results in vignetting and/or crosstalk near the butted region. The gap is filled with an epoxy resin or other similar material which, when hardened, has an index of referaction near that of the glass support plate.
REFERENCES:
patent: 4145721 (1979-03-01), Beaudouin
patent: 4237488 (1980-12-01), Takemura
patent: 4481539 (1984-11-01), Meise et al.
patent: 4811082 (1989-03-01), Jacobs et al.
patent: 4907062 (1990-03-01), Fukushima
"Improved Optical Performance near the Butt Regions of Multichip Focal Planes", by Strong et al., Published at pp. 36-41, vol. 924 of the Proceedings of the SPIE, 6-8 Apr. 1988.
Goldfarb Samuel
Kinnard Kenneth P.
Strong, Jr. Richard T.
Tower John R.
Allen Stephone B.
General Electric Company
Meise William H.
Nelms David C.
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