Title

Liquid Crystal Microlens Arrays With Switchable Positive And Negative Focal Lengths

Keywords

Adaptive optics; LC displays; Liquid crystal (LC) devices; Microlens arrays; Tunable focal length

Abstract

A flat microlens array whose focal length can be switched from positive to negative by electric field is demonstrated experimentally and confirmed by computer simulations. To generate the required gradient refractive index, an inhomogeneous electric field is created by a spherical indium-tin-oxide (ITO) electrode which is imbedded in the top flat substrate. The bottom substrate has a planar ITO electrode on its inner surface. A thin polymeric layer is overcoated on top of the spherical ITO to create a flat surface. The disclination lines are eliminated. Because of the employed dual-frequency liquid crystal, the microlens array has fast response times. © 2005 IEEE.

Publication Date

9-1-2005

Publication Title

IEEE/OSA Journal of Display Technology

Volume

1

Issue

1

Number of Pages

151-155

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/JDT.2005.853268

Socpus ID

27744598145 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/27744598145

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