Title

An Adaptive Liquid Lens With Radial Interdigitated Electrode

Keywords

adaptive lens; dielectrophoretic force; imaging; tunable focus

Abstract

A newly patterned electrode is designed for a dielectric liquid lens. The electrode has a radial interdigitated structure which can provide a symmetrical-nonuniform fringing field. This electric field can effectively deform the shape of a dielectric liquid droplet in radial direction, causing the focal length of the liquid droplet to change. For a lens using glycerol as the droplet and optical oil (SL-5267) as the surrounding medium, its focal length (f) can be tuned in the range of ∼ -8.28 蠆 f 蠆 ∼ -4.4 mm, when the applied voltage is changed from 0 to 120 Vrms. In contrast to previous approaches, the liquid lens with radial interdigitated electrode has the advantages of scalable aperture size, wide variability of focal length, and good optical characteristics. Moreover, the driving voltage is insensitive to the size of the droplet.

Publication Date

10-1-2014

Publication Title

Journal of Optics (United Kingdom)

Volume

16

Issue

10

Number of Pages

-

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1088/2040-8978/16/10/105601

Socpus ID

84907790441 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84907790441

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