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학술지 Electrically Tunable Binary Phase Fresnel Lens Based on a Dielectric Elastomer Actuator
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저자
박선택, 박봉제, 남세광, 윤성률, 박승구, 문성철, 임정묵, 류영화, 송석호, 경기욱
발행일
201710
출처
Optics Express, v.25 no.20, pp.23801-23808
ISSN
1094-4087
출판사
Optical Society of America(OSA)
DOI
https://dx.doi.org/10.1364/OE.25.023801
협약과제
17JS1200, 능동 가변 렌즈 어레이용 광학계 연구, 박선택
초록
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.
KSP 제안 키워드
All-solid-state, Dielectric elastomer(DE), Dielectric elastomer actuator(DEA), Focal length, Fresnel Zone Plate, In-plane deformation, Numerical simulations, Silver nanowire(AgNW), compliant electrodes, electric potential, electrically tunable