Radiant energy – Photocells; circuits and apparatus – Housings
Patent
1992-11-20
1994-02-22
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Housings
257434, H01J 502
Patent
active
052890023
ABSTRACT:
An optical sensor uses a transparent molded polycarbonate cover to achieve improved quality and reduced cost. The optical sensor includes a CCD supported on a ceramic support plate with leads attached to the support plate and with the polycarbonate cover over the CCD. The cover is shaped like an inverted cup. The base of the cup forms a flat light-transmitting surface and the walls of the cup form a spacer that assures that the light-transmitting surface is held a substantial distance away from the CCD. Any shadows of anomalies on the light-transmitting surface are diffused by the substantial space. The optical sensor is thus made highly resistant to producing false signals. The optical sensors are assembled in a series of operations through which they are passed while interconnected with handling members attached to their respective leads. The handling members are positioned and attached to leave a space directly under the ceramic support plate. This facilitates ease and efficiency of manufacturing and keeps cost down.
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Eastman Kodak Company
Nelms David C.
Owens Raymond L.
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