Electrically tunable binary phase Fresnel lens based on a dielectric elastomer actuator

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We propose and demonstrate an all-solid-state tunable binary phase Fresnel lens with electrically controllable focal length. The lens is composed of a binary phase Fresnel zone plate, a circular acrylic frame, and a dielectric elastomer (DE) actuator which is made of a thin DE layer and two compliant electrodes using silver nanowires. Under electric potential, the actuator produces in-plane deformation in a radial direction that can compress the Fresnel zones. The electrically-induced deformation compresses the Fresnel zones to be contracted as high as 9.1% and changes the focal length, getting shorter from 20.0 cm to 14.5 cm. The measured change in the focal length of the fabricated lens is consistent with the result estimated from numerical simulation. (C) 2017 Optical Society of America
Publisher
OPTICAL SOC AMER
Issue Date
2017-10
Language
English
Article Type
Article
Citation

OPTICS EXPRESS, v.25, no.20, pp.23801 - 23808

ISSN
1094-4087
DOI
10.1364/OE.25.023801
URI
http://hdl.handle.net/10203/239952
Appears in Collection
ME-Journal Papers(저널논문)
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