Compact finger imager

Peter P. Clark; Douglas S. Goodman; William T. Plummer

doi:10.1117/12.368213

5 October 1999 Compact finger imager

Peter P. Clark, Douglas S. Goodman, William T. Plummer

Proceedings Volume 3779, Current Developments in Optical Design and Optical Engineering VIII; (1999) https://doi.org/10.1117/12.368213
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

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.

Citation Download Citation

Peter P. Clark, Douglas S. Goodman, and William T. Plummer "Compact finger imager", Proc. SPIE 3779, Current Developments in Optical Design and Optical Engineering VIII, (5 October 1999); https://doi.org/10.1117/12.368213

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available