Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1991-01-09
1992-11-10
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
250237R, H01J 4014, H04N 110
Patent
active
051626454
ABSTRACT:
A photographic scanner has a light source for illuminating a photographic original to be scanned and a sensor for detecting light which has passed through the original. The sensor has a single row of sensing cells, and the original is scanned by moving the sensor and the original relative to one another in a direction perpendicular to the row. An objective serves to focus light from the original on the sensing cells. Between the objective and the sensor is a protective glass sheet which overlies the sensor. A mask is interposed between the protective sheet and the sensor and has a slit in register with the row of sensing cells. The mask reduces the amount of scattered light reaching the sensing cells.
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Jacob Friedrich
Ruf Wolfgang
Wagensonner Eduard
Agfa-Gevaert Aktiengesellschaft
Kontler Peter K.
Lee John R.
Nelms David C.
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