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

[+] Author Affiliations
Ramin Mirjalili

University of Washington, Department of Electrical Engineering, 185 Stevens Way, Paul Allen Center, Campus Box 352500, Seattle, Washington 98195-2500

Babak A. Parviz

University of Washington, Department of Electrical Engineering, 185 Stevens Way, Paul Allen Center, Campus Box 352500, Seattle, Washington 98195-2500

J. Micro/Nanolith. MEMS MOEMS. 11(3), 033010 (Sep 21, 2012). doi:10.1117/1.JMM.11.3.033010
History: Received February 13, 2012; Revised July 21, 2012; Accepted July 31, 2012
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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.

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© 2012 Society of Photo-Optical Instrumentation Engineers

Citation

Ramin Mirjalili and Babak A. Parviz
"Microlight-emitting diode with integrated Fresnel zone plate for contact lens embedded display", J. Micro/Nanolith. MEMS MOEMS. 11(3), 033010 (Sep 21, 2012). ; http://dx.doi.org/10.1117/1.JMM.11.3.033010


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