Registers – Coded record sensors – Particular sensor structure
Patent
1997-01-31
1998-07-14
Hajec, Donald T.
Registers
Coded record sensors
Particular sensor structure
235467, 235487, 358474, 358482, 250234, 250216, G06K 710
Patent
active
057808295
ABSTRACT:
The present invention relates generally to a flat-plate scanner with two lamps, and particularly to a device adopts a beam-splitting device which partially reflects and partially transmits incident light. Reflective scanning utilizes a light source, a set of mirrors, a beam-splitting device and an image-capturing element, wherein reflected light (or transmitted light) from the beam-splitting device representing the reflective document image will be captured by the image-capturing element. On the other hand, transparent scanning utilizes another light source, another set of mirrors, the beam-splitting device and the image-capturing element, wherein transmitted light (or reflected light) from the beam-splitting device representing the transparent document image will be captured by the image-capturing element. The present invention is characterized in that all the optical members are fixed, and thus better accuracy and image quality can be acquired.
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Chen Si-Min
Tsai Jenn-Tsair
Hajec Donald T.
Lee Michael G.
Mustek Systems Inc.
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