Biomimetic accommodating lens with implementation in MEMS

Alexander L. Hogan; Brian Baker; Charles Fisher; Stephen Naylor; Doug Fettig; Ian R. Harvey

doi:10.1117/12.915680

15 February 2012 Biomimetic accommodating lens with implementation in MEMS

Alexander L. Hogan, Brian Baker, Charles Fisher, Stephen Naylor, Doug Fettig, Ian R. Harvey

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Proceedings Volume 8253, MEMS Adaptive Optics VI; 82530P (2012) https://doi.org/10.1117/12.915680
Event: SPIE MOEMS-MEMS, 2012, San Francisco, California, United States

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.

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Alexander L. Hogan, Brian Baker, Charles Fisher, Stephen Naylor, Doug Fettig, and Ian R. Harvey "Biomimetic accommodating lens with implementation in MEMS", Proc. SPIE 8253, MEMS Adaptive Optics VI, 82530P (15 February 2012); https://doi.org/10.1117/12.915680

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KEYWORDS

Microelectromechanical systems

Actuators

Biomimetics

Eye

Computer aided design

Crystals

Cameras

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