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Improvement of Varioptic's liquid lens based on electrowetting: how to obtain a short response time and its application in the design of a high resolution iris biometric system

机译:基于电润湿的Varioptic液体透镜的改进:如何获得较短的响应时间及其在高分辨率虹膜生物识别系统设计中的应用

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摘要

This communication presents the results obtained for decreasing the response time of electrowetting-based real time focus correctors (liquid lenses). In order to provide a compact iris biometric system demonstrator, we have achieved a response time at 90% of 7.5 ms for a change in focalization from 0 diopter to 10 diopter with a liquid lens having an aperture of 1.9 mm. We have used a hydrodynamic fluid reorganization model to predict the features of these fast liquid lenses and evaluated the sensivity of the response time to the different conception parameters.
机译:该通讯介绍了为减少基于电润湿的实时焦点校正器(液体透镜)的响应时间而获得的结果。为了提供紧凑的虹膜生物识别系统演示器,对于孔径为1.9 mm的液体透镜,从0屈光度到10屈光度的聚焦变化,我们获得了7.5毫秒的90%响应时间。我们已经使用了流体动力流体重组模型来预测这些快速液体透镜的功能,并评估了响应时间对不同概念参数的敏感性。

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