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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 11 — May. 30, 2005
  • pp: 4141–4147

Electrically switchable Fresnel lens using a polymer-separated composite film

Yun-Hsing Fan, Hongwen Ren, and Shin-Tson Wu  »View Author Affiliations


Optics Express, Vol. 13, Issue 11, pp. 4141-4147 (2005)
http://dx.doi.org/10.1364/OPEX.13.004141


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Abstract

A Fresnel lens with electrically-tunable diffraction efficiency while possessing high image quality is demonstrated using a phase-separated composite film (PSCOF). The light scattering-free PSCOF is obtained by anisotropic phase separation between liquid crystal and polymer. Such a lens can be operated below 12 volts and its switching time is reasonably fast (~10 ms). The maximum diffraction efficiency reaches ~35% for a linearly polarized light, which is close to the theoretical limit of 41%.

© 2005 Optical Society of America

OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(160.3710) Materials : Liquid crystals
(160.5470) Materials : Polymers

ToC Category:
Research Papers

History
Original Manuscript: April 29, 2005
Revised Manuscript: May 17, 2005
Published: May 30, 2005

Citation
Yun-Hsing Fan, Hongwen Ren, and Shin-Tson Wu, "Electrically switchable Fresnel lens using a polymer-separated composite film," Opt. Express 13, 4141-4147 (2005)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-13-11-4141


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