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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 18 — Sep. 3, 2007
  • pp: 11328–11335

Liquid crystal lens with large focal length tunability and low operating voltage

Hongwen Ren, David W. Fox, Benjamin Wu, and Shin-Tson Wu  »View Author Affiliations


Optics Express, Vol. 15, Issue 18, pp. 11328-11335 (2007)
http://dx.doi.org/10.1364/OE.15.011328


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Abstract

We demonstrate a tunable focus liquid crystal (LC) lens by sandwiching a homogeneous LC layer between a planar electrode and a curved electrode. The curved electrode which is made of conductive polymer has parabolic shape with a large apex distance. Such design dramatically reduces the phase loss which leads to a short focal length (~15 cm). By using a thin top glass substrate on the curved electrode side, the operating voltage of the lens cell for achieving the shortest focal length is reduced to ~23 Vrms. This LC lens has advantages in large focal length tunability, low operating voltage, and good mechanical stability.

© 2007 Optical Society of America

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(160.3710) Materials : Liquid crystals
(220.3620) Optical design and fabrication : Lens system design

ToC Category:
Adaptive Optics

History
Original Manuscript: June 7, 2007
Revised Manuscript: July 18, 2007
Manuscript Accepted: August 17, 2007
Published: August 22, 2007

Citation
Hongwen Ren, David W. Fox, Benjamin Wu, and Shin-Tson Wu, "Liquid crystal lens with large focal length tunability and low operating voltage," Opt. Express 15, 11328-11335 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-18-11328


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