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Journal of Micro/Nanolithography, MEMS, and MOEMS

Microlight-emitting diode with integrated Fresnel zone plate for contact lens embedded display
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Paper Abstract

We report the fabrication and testing of 30-μm radii circular InGaN blue light-emitting didode (LEDs) grown on sapphire wafers, with cointegrated Fresnel zone plates (FZP) with outermost ring radii of 99.6 μm on the backside of the sapphire substrates to provide a collimated output. After being embedded on a contact lens platform such LEDs with integrated lenses can aid in producing in-focus images on the human retina. We measured an image width of 50 μm created by a FZP f/3 subsidiary focal point at 230 μm from the surface. We also demonstrate the construction and wireless operation of a contact lens with predetermined embedded text.

Paper Details

Date Published: 21 September 2012
PDF: 7 pages
J. Micro/Nanolith. 11(3) 033010 doi: 10.1117/1.JMM.11.3.033010
Published in: Journal of Micro/Nanolithography, MEMS, and MOEMS Volume 11, Issue 3
Show Author Affiliations
Ramin Mirjalili, Univ. of Washington (United States)
Babak Parviz, Univ. of Washington (United States)


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