Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1986-03-07
1987-11-17
Westin, Edward P.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
358212, 35821313, 35821326, 250226, H01J 314
Patent
active
047076151
ABSTRACT:
A high-resolution image sensor uses integrated arrays of photosensitive elements in connection with a lens system which projects, onto the arrays, an erect, unmagnified, unreversed real image of the object being sensed (such as a line of a document). The arrays are staggered in two or more rows so that a single, large integrated array need not be used, yet the entire width of the document line can be covered by photosensitive elements while a 1:1 ratio is maintained between object size and image size. The real image is produced on the two or more rows of arrays by two or more optical systems which have a large depth-of-focus to allow for some variation in object distance. The sensor has a high image quality and is capable of detecting color.
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Tokyo Shibaura Denki Kabushiki Kaisha
Westin Edward P.
Wieland Charles F.
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