LIQUID LENS DRIVING METHOD
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United States of America Patent
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Issued Date -
Oct 16, 2014
app pub date -
Jul 26, 2013
filing date -
Apr 10, 2013
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A liquid lenses driving method to control the focus of a liquid lens by inputting voltages to specific electrodes. The liquid lens includes a first liquid, a second liquid having a lower refractive index than and immiscible with the first liquid, a plurality of driving electrodes (M), an container, and a transparent cover. M is greater than or equal to 2. The first liquid is positioned above the plurality of electrodes. The electrodes are concentrically configured and annular in shape. The outermost electrode is a first electrode and the innermost electrode is an Mth electrode. Adjacent electrodes have opposite polarities. When a driving voltage is provided throughout the first electrode to the Nth electrode, a base circumference of the first liquid is displaced to an inner circumference of the Nth electrode. N is an integer greater than or equal to 1 and smaller than M.
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