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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 3 — Jan. 20, 2010
  • pp: 409–421

Design considerations for high efficiency liquid crystal decentered microlens arrays for steering light

Lei Shi, Jianru Shi, Paul F. McManamon, and Philip J. Bos  »View Author Affiliations

Applied Optics, Vol. 49, Issue 3, pp. 409-421 (2010)

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We have investigated the causes of low efficiency for optical beam steering devices based on liquid crystal decentered microlens arrays (DLAs). We show that the efficiency is effected by the relative phase of light exiting the individual lenses, the imperfect focusing of small lenses due to diffraction, the aberrations related to off-axis light going through a lens, and the diffraction spreading of light beams going through the DLA structure. A high steering efficiency of over 94.4% is demonstrated by modeling the transmitted light through the DLA with scalar diffraction theory. We also propose modified phase profiles for the lenses that are a function of angle that substantially improve the performance of these types of device over the unmodified profiles.

© 2010 Optical Society of America

OCIS Codes
(050.0050) Diffraction and gratings : Diffraction and gratings
(140.0140) Lasers and laser optics : Lasers and laser optics
(160.3710) Materials : Liquid crystals
(230.3720) Optical devices : Liquid-crystal devices

ToC Category:
Diffraction and Gratings

Original Manuscript: May 26, 2009
Revised Manuscript: December 3, 2009
Manuscript Accepted: December 5, 2009
Published: January 14, 2010

Lei Shi, Jianru Shi, Paul F. McManamon, and Philip J. Bos, "Design considerations for high efficiency liquid crystal decentered microlens arrays for steering light," Appl. Opt. 49, 409-421 (2010)

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