Image input device
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United States of America Patent
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-
Feb 27, 1990
Issued Date -
N/A
app pub date -
Mar 22, 1989
filing date -
Jul 18, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An image input device for optically sensing a fingerprint or like pattern to convert it to an electrical signal is disclosed. A guide is provided on a contact surface, or reflective surface, of a prism to orient the lengthwise direction of the pattern of an object parallel to a ridge, which is defined by an incidence surface and a wayout surface of the prism.
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Cited Art Landscape
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