Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1998-07-30
2000-06-13
Le, Que T.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
2502081, 250566, 25023118, 358473, H01J 314
Patent
active
060752408
ABSTRACT:
A hand-held optical scanner for reading color images formed on a document. The scanner head is all-optical and contains no electronics. Optical fiber bundles couple the scanner head to a remote opto-electronic module containing a linear or a 2D sensor array for converting optical signals, reflected from the document, to electrical signals for transmission to a computer display, etc. By using side coupling, the transmitted and reflected light for each pixel travels through the same optical fiber without the need for a beam splitter. The optical fibers are used for the functions of image scanning, position encoding, and signaling a computer which assigns each one of incoherently arranged optical fibers to one of the functions.
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Fujieda Ichiro
Li Yao
Schweitzer Allan
Wang Ting
Watanabe Kojiro
Le Que T.
NEC USA Inc.
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