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Micromachines 2014, 5(2), 373-384; doi:10.3390/mi5020373

Bio-Inspired Wide-Angle Broad-Spectrum Cylindrical Lens Based on Reflections from Micro-Mirror Array on a Cylindrical Elastomeric Membrane

1
Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA
2
McPherson Eye Research Institute, University of Wisconsin-Madison, Madison, WI 53706 USA
3
Materials Science Program, University of Wisconsin-Madison, Madison, WI 53706, USA
4
Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA
*
Author to whom correspondence should be addressed.
Received: 11 May 2014 / Revised: 10 June 2014 / Accepted: 10 June 2014 / Published: 20 June 2014
(This article belongs to the Special Issue Microlenses)
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Abstract

We present a wide-angle, broad-spectrum cylindrical lens based on reflections from an array of three-dimensional, high-aspect-ratio micro-mirrors fabricated on a cylindrical elastomeric substrate, functionally inspired by natural reflecting superposition compound eyes. Our device can perform one-dimensional focusing and beam-shaping comparable to conventional refraction-based cylindrical lenses, while avoiding chromatic aberration. The focal length of our cylindrical lens is 1.035 mm, suitable for micro-optical systems. Moreover, it demonstrates a wide field of view of 152° without distortion, as well as modest spherical aberrations. Our work could be applied to diverse applications including laser diode collimation, barcode scanning, holography, digital projection display, microlens arrays, and optical microscopy. View Full-Text
Keywords: large field of view; broad spectrum; minimum chromatic aberration; cylindrical lens; bio-inspiration large field of view; broad spectrum; minimum chromatic aberration; cylindrical lens; bio-inspiration
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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Huang, C.-C.; Jiang, H. Bio-Inspired Wide-Angle Broad-Spectrum Cylindrical Lens Based on Reflections from Micro-Mirror Array on a Cylindrical Elastomeric Membrane. Micromachines 2014, 5, 373-384.

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