Stretchable Binary Fresnel Lens for Focus Tuning

Xueming Li; Lei Wei; Rene Poelma; Sten Vollebregt; Jia Wei; Paul Urbach; Lina Sarro; Guo Qi Zhang

doi:10.1038/srep25348

Stretchable Binary Fresnel Lens for Focus Tuning

Xueming Li, Lei Wei, Rene Poelma, Sten Vollebregt, Jia Wei, Paul Urbach, Lina Sarro, Guo Qi Zhang

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Abstract

This paper presents a tuneable binary amplitude Fresnel lens produced by wafer-level microfabrication. The Fresnel lens is fabricated by encapsulating lithographically defined vertically aligned carbon nanotube (CNT) bundles inside a polydimethyl-siloxane (PDMS) layer. The composite lens material combines the excellent optical absorption properties of the CNT with the transparency and stretchability of the PDMS. By stretching the elastomeric composite in radial direction, the lens focal length is tuned. Good focusing response is demonstrated and a large focus change (≥24%) was achieved by stretching lenses up to 11.4%.

Original language	English
Article number	25348
Number of pages	8
Journal	Scientific Reports
Volume	6
DOIs	https://doi.org/10.1038/srep25348
Publication status	Published - 3 May 2016

Keywords

Adaptive optics
Carbon nanotubes and fullerenes
Micro-optics
Polymers
OA-Fund TU Delft

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title = "Stretchable Binary Fresnel Lens for Focus Tuning",

abstract = "This paper presents a tuneable binary amplitude Fresnel lens produced by wafer-level microfabrication. The Fresnel lens is fabricated by encapsulating lithographically defined vertically aligned carbon nanotube (CNT) bundles inside a polydimethyl-siloxane (PDMS) layer. The composite lens material combines the excellent optical absorption properties of the CNT with the transparency and stretchability of the PDMS. By stretching the elastomeric composite in radial direction, the lens focal length is tuned. Good focusing response is demonstrated and a large focus change (≥24%) was achieved by stretching lenses up to 11.4%.",

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AU - Li, Xueming

AU - Wei, Lei

AU - Poelma, Rene

AU - Vollebregt, Sten

AU - Wei, Jia

AU - Urbach, Paul

AU - Sarro, Lina

AU - Zhang, Guo Qi

PY - 2016/5/3

Y1 - 2016/5/3

N2 - This paper presents a tuneable binary amplitude Fresnel lens produced by wafer-level microfabrication. The Fresnel lens is fabricated by encapsulating lithographically defined vertically aligned carbon nanotube (CNT) bundles inside a polydimethyl-siloxane (PDMS) layer. The composite lens material combines the excellent optical absorption properties of the CNT with the transparency and stretchability of the PDMS. By stretching the elastomeric composite in radial direction, the lens focal length is tuned. Good focusing response is demonstrated and a large focus change (≥24%) was achieved by stretching lenses up to 11.4%.

AB - This paper presents a tuneable binary amplitude Fresnel lens produced by wafer-level microfabrication. The Fresnel lens is fabricated by encapsulating lithographically defined vertically aligned carbon nanotube (CNT) bundles inside a polydimethyl-siloxane (PDMS) layer. The composite lens material combines the excellent optical absorption properties of the CNT with the transparency and stretchability of the PDMS. By stretching the elastomeric composite in radial direction, the lens focal length is tuned. Good focusing response is demonstrated and a large focus change (≥24%) was achieved by stretching lenses up to 11.4%.

KW - Adaptive optics

KW - Carbon nanotubes and fullerenes

KW - Micro-optics

KW - Polymers

KW - OA-Fund TU Delft

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JO - Scientific Reports

JF - Scientific Reports

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Stretchable Binary Fresnel Lens for Focus Tuning

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