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Proceedings Paper

Compact finger imager
Author(s): Peter P. Clark; Douglas S. Goodman; William T. Plummer
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Paper Abstract

We present the design of a compact, low-cost finger imager, to be used for enrolling and recognizing individuals based upon their finger ridge patterns. The optical system employs viewing beyond the critical angle and darkfield illumination for maximum image contrast. The optical system is afocal and telecentric, achieving corrected distortion with oblique viewing.

Paper Details

Date Published: 5 October 1999
PDF: 7 pages
Proc. SPIE 3779, Current Developments in Optical Design and Optical Engineering VIII, (5 October 1999); doi: 10.1117/12.368213
Show Author Affiliations
Peter P. Clark, Polaroid Corp. (United States)
Douglas S. Goodman, Polaroid Corp. (United States)
William T. Plummer, Polaroid Corp. (United States)

Published in SPIE Proceedings Vol. 3779:
Current Developments in Optical Design and Optical Engineering VIII
Robert E. Fischer; Warren J. Smith, Editor(s)

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