Image enhancer
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United States of America Patent
Stats
-
May 23, 1989
Grant Date -
N/A
app pub date -
Sep 3, 1982
filing date -
Sep 3, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An image enhancer for providing a sharp, contrasting image of a pattern, such as a fingerprint pattern is disclosed. In one embodiment, an image enhancer is comprised of a viscous, opaque liquid interposed between an optical glass window and a reflective elastomeric membrane. Artificial lighting is evenly focused on the underside of the membrane and a sharp fingerprint image of a finger pressing said membrane against the window is produced. The image can be either photographed or focused on a conventional matrix of image sensors or pixels.
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Cited Art Landscape
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