NDLI: Fabrication and Characterization of a Repositionable Liquid Micro Lens System

Content Provider	IEEE Xplore Digital Library
Author	Shaik, R.P. Lasinger, L. Krogmann, F. Monch, W. Zappe, H.
Copyright Year	2007
Description	Author affiliation: Univ. of Freiburg, Freiburg (Shaik, R.P.; Lasinger, L.; Krogmann, F.; Monch, W.; Zappe, H.)
Abstract	A novel method to improve both the lateral positioning and focal length tuning accuracy of a liquid lens in a micro lens system, based on the electrowetting on dielectrics (EWOD) principle, is described. This system consists of a device, encapsulated with a packaging technique, fabricated on a transparent substrate featured with an array of electrodes and a structured surface whose periodicity is smaller than the electrode's dimension. With variable applied voltage signals, the liquid lens is actuated precisely in the lateral position and also tuned dynamically irrespective of the lens position on the substrate. The accuracy of lateral positioning is mainly dependent on the structure of the dielectric surface. Measurements of the focal length tuning range and the positioning accuracy are presented. A first design of reconfigurable micro lens system, which has diverse application as adaptive wave-front sensing, optical tweezers and etc, is demonstrated.
Starting Page	139
Ending Page	140
File Size	2563285
Page Count	2
File Format	PDF
ISBN	9781424406418
DOI	10.1109/OMEMS.2007.4373879
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-08-12
Publisher Place	Taiwan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fabrication Lenses Dielectric substrates Optical surface waves Dielectric liquids Packaging Electrodes Voltage Dielectric measurements Length measurement Micro-lens array EWOD Electro-wetting on Dielectrics Optical Microsystems Variablefocal length
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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