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Proceedings Paper

Realization of integral 3-dimensional image using fabricated tunable liquid lens array
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Paper Abstract

Electrowetting has been widely studied for various optical applications such as optical switch, sensor, prism, and display. In this study, vari-focal liquid lens array is developed using electrowetting principle to construct integral 3-dimensional imaging. The electrowetting principle that changes the surface tension by applying voltage has several advantages to realize active optical device such as fast response time, low electrical consumption, and no mechanical moving parts. Two immiscible liquids that are water and oil are used for forming lens. By applying a voltage to the water, the focal length of the lens could be tuned as changing contact angle of water. The fabricated electrowetting vari-focal liquid lens array has 1mm diameter spherical lens shape that has 1.6mm distance between each lens. The number of lenses on the panel is 23x23 and the focal length of the lens array is simultaneously tuned from -125 to 110 diopters depending on the applied voltage. The fabricated lens array is implemented to integral 3-dimensional imaging. A 3D object is reconstructed by fabricated liquid lens array with 23x23 elemental images that are generated by 3D max tools. When liquid lens array is tuned as convex state. From vari-focal liquid lens array implemented integral imaging system, we expect that depth enhanced integral imaging can be realized in the near future.

Paper Details

Date Published: 5 March 2015
PDF: 7 pages
Proc. SPIE 9320, Microfluidics, BioMEMS, and Medical Microsystems XIII, 932011 (5 March 2015); doi: 10.1117/12.2078296
Show Author Affiliations
Muyoung Lee, KAIST (Korea, Republic of)
Junoh Kim, KAIST (Korea, Republic of)
Cheol Joong Kim, KAIST (Korea, Republic of)
Jin Su Lee, KAIST (Korea, Republic of)
Yong Hyub Won, KAIST (Korea, Republic of)

Published in SPIE Proceedings Vol. 9320:
Microfluidics, BioMEMS, and Medical Microsystems XIII
Bonnie L. Gray; Holger Becker, Editor(s)

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