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Proceedings Paper

Improvement of Varioptic's liquid lens based on electrowetting: how to obtain a short response time and its application in the design of a high resolution iris biometric system
Author(s): Benjamin Burger; Serge C. Meimon; Cyril Petit; Minh Chau Nguyen
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Paper Abstract

This communication presents the results obtained for decreasing the response time of electrowetting-based real time focus correctors (liquid lenses). In order to provide a compact iris biometric system demonstrator, we have achieved a response time at 90% of 7.5 ms for a change in focalization from 0 diopter to 10 diopter with a liquid lens having an aperture of 1.9 mm. We have used a hydrodynamic fluid reorganization model to predict the features of these fast liquid lenses and evaluated the sensivity of the response time to the different conception parameters.

Paper Details

Date Published: 27 February 2015
PDF: 9 pages
Proc. SPIE 9375, MOEMS and Miniaturized Systems XIV, 93750S (27 February 2015); doi: 10.1117/12.2075719
Show Author Affiliations
Benjamin Burger, Varioptic-A BU of Parrot SA (France)
Serge C. Meimon, ONERA (France)
Cyril Petit, ONERA (France)
Minh Chau Nguyen, Varioptic-A BU of Parrot SA (France)

Published in SPIE Proceedings Vol. 9375:
MOEMS and Miniaturized Systems XIV
Wibool Piyawattanametha; Yong-Hwa Park, Editor(s)

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