| 摘要 |
PROBLEM TO BE SOLVED: To provide a variable focus liquid lens with reduced driving voltage. SOLUTION: In the variable focus liquid lens using electrowetting, comprising a conductive first liquid and an insulating second liquid, at least one of the first liquid composed of electrolyte and the second liquid composed of insulating liquid comprises at least a surfactant for reducing interfacial energy between the first and the second liquids, and an interfacial layer as an intermediate layer is gathered between the first and the second liquids by the surfactant. The variable focus liquid lens in the present invention has about 50% lower driving voltage required for changing focus than a conventional variable focus liquid lens, ensuring stability of the two fluids. COPYRIGHT: (C)2006,JPO&NCIPI
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