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Electrowetting-driven variable-focus microlens on flexible surfaces
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DOI：10.1063/1.4726038.png)
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Abstract
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We demonstrate a flexible, electrowetting-driven, variable-focus liquid microlens. The microlens is fabricated using a soft polymer polydimethylsiloxane. The lens can be smoothly wrapped onto a curved surface. A low-temperature fabrication process was developed to reduce the stress on and to avoid any damage to the polymer. The focal length of the microlens varies between -15.0mm to +28.0 mm, depending on the applied voltage. The resolving power of the microlens is 25.39 line pairs per mm using a 1951 United States Air Force resolution chart. The typical response time of the lens is around 50 ms. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4726038]
Keywords:
LIQUID LENS
VOLTAGE
SYSTEM
ARRAY
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