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Proceedings Paper

Liquid lens based on electrowetting: a new adaptive component for imaging applications in consumer electronics
Author(s): Jerome Crassous; Claude Gabay; Gaetan Liogier; Bruno Berge
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Paper Abstract

A new technology for focus variation with direct electric control without moving part will be presented. The technology relies on an interface between two non-miscible transparent liquids, which can be deformed by electrowetting. This technology has been developed since 10 years in the lab and starts to be available commercially, with the following characteristics: large amplitude of dioptric correction (20 dioptries for a 5mm pupil size), fast response, small power consumption and good transmission in the visible range, clear pupil 1-10mm diameter. This paper will show the basic principle, as well as the physical limitations and optical aberrations due to differential thermal expansion of the two liquids in the cell. Experimental measurements made with a Schack Hartmann wave front analyzer will be presented, as well as numerical simulations of the liquid-liquid interface. Applications will be discussed, mainly in consumer electronics.

Paper Details

Date Published: 23 December 2004
PDF: 6 pages
Proc. SPIE 5639, Adaptive Optics and Applications III, (23 December 2004); doi: 10.1117/12.576523
Show Author Affiliations
Jerome Crassous, Ecole Normale Superieure de Lyon (France)
Claude Gabay, Ecole Normale Superieure de Lyon (France)
Gaetan Liogier, Varioptic (France)
Ecole Normale Superieure de Lyon (France)
Bruno Berge, Varioptic (France)
Ecole Normale Superieure de Lyon (France)

Published in SPIE Proceedings Vol. 5639:
Adaptive Optics and Applications III
Wenhan Jiang; Yoshiji Suzuki, Editor(s)

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