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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 23 — Nov. 13, 2006
  • pp: 11292–11298

Adaptive liquid crystal lens with large focal length tunability

Hongwen Ren and Shin-Tson Wu  »View Author Affiliations


Optics Express, Vol. 14, Issue 23, pp. 11292-11298 (2006)
http://dx.doi.org/10.1364/OE.14.011292


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Abstract

We demonstrate a tunable-focus lens using a spherical glass shell and a homogeneous liquid crystal (LC) cell. The inner surface of the glass shell and the bottom surface of the LC cell are coated with indium tin oxide (ITO) electrodes while the LC layer is sandwiched between the spherical and flat ITO electrodes. When a voltage is applied to the electrodes, a centro-symmetric gradient refractive index is generated within the LC layer and the focusing behavior occurs. Based on our analysis, the focal length tunability of the LC lens depends significantly on the filled material in the sag region. For the air-filled LC lens we designed, its focal length can be tuned from infinity to ~96 cm. A method for reducing the operating voltage is proposed.

© 2006 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:
Optical Devices

History
Original Manuscript: September 18, 2006
Revised Manuscript: November 2, 2006
Manuscript Accepted: November 4, 2006
Published: November 13, 2006

Virtual Issues
Vol. 1, Iss. 12 Virtual Journal for Biomedical Optics

Citation
Hongwen Ren and Shin-Tson Wu, "Adaptive liquid crystal lens with large focal length tunability," Opt. Express 14, 11292-11298 (2006)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-14-23-11292


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References

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