National Changhua University of Education Institutional Repository : Item 987654321/6431
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题名: Temperature Compensation Analysis of Liquid Lens for Variable-Focus Control
作者: Chen, Shu Jung
Shen, Chih Hsiung
贡献者: 機電系
关键词: Electrowetting
Liquid Lens
Temperature Compensation
日期: 2006
上传时间: 2010-11-29T07:06:13Z
摘要: In this work, a fabrication and temperature compensation analysis and electrowetting for the liquid lenses is proposed. The unique capability of controlling the lens profile during the electrowetting fabrication processes is successfully demonstrated for different ambient temperature environment. For a lens fabricated on a hydrophobic Teflon layer, it is found that when the applied voltage is increased, the focal length increases, and the curvature decreases. One challenge for the liquid lens is operating temperature range. Due to the environment temperature change, the ability of controlling the lens profile is analyzed and measured. The description of change in contact angle corresponding to the variation of ambient temperature is derived. Based on this description, we firstly derive the control of voltage vs. temperature for a fixed dioptric power. The control of lens during a focusing action was studied by observation of the image formed by the light through the transparent bottom of ITO glass. Under several conditions of ambient temperature change, capability of controlling the lens profile for a fixed focus is successfully demonstrated by experiments.
關聯: Proceedings of SPIE - The International Society for Optical Engineering, January 25-26, 2006
显示于类别:[機電工程學系] 會議論文

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