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Proceedings Paper

Biomimetic accommodating lens with implementation in MEMS
Author(s): Alexander L. Hogan; Brian Baker; Charles Fisher; Stephen Naylor; Doug Fettig; Ian R. Harvey
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Paper Abstract

We describe an accommodating lens patterned after the crystalline lens of the eye. Our biomimetic MEMS design calls to mind the zonules of zinn which pull radially to stretch the crystalline lens of the eye to modify the optical path. We present initial characterization of the prototype macro-scale device constructed through traditional machining techniques and using a PDMS polymer lens. Testing of the macro-scale lens indicated a 22% change in focal length through the range of radial stretching, with degradation of the spherical lens shape but no hysteresis after low-cycle testing. We also demonstrate a MEMS implementation of the lens actuator constructed using the Sandia SUMMiT-V ™ surface micromachining process. The optical path of this system is approximately 300 microns in diameter, providing a platform to potential applications improving mobile camera optics and medical imaging.

Paper Details

Date Published: 15 February 2012
PDF: 8 pages
Proc. SPIE 8253, MEMS Adaptive Optics VI, 82530P (15 February 2012);
Show Author Affiliations
Alexander L. Hogan, The Univ. of Utah (United States)
Brian Baker, The Univ. of Utah (United States)
Charles Fisher, The Univ. of Utah (United States)
Stephen Naylor, The Univ. of Utah (United States)
Doug Fettig, Aptina Imaging Corp. (United States)
Ian R. Harvey, The Univ. of Utah (United States)

Published in SPIE Proceedings Vol. 8253:
MEMS Adaptive Optics VI
Scot S. Olivier; Thomas G. Bifano; Joel Kubby, Editor(s)

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