Voltage-controlled IPMC actuators for accommodating intra-ocular lens systems
Voltage-controlled IPMC actuators for accommodating intra-ocular lens systems
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DOI：
10.1088/1361-665x/aa61e8
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发表时间：
2017-04-01
影响因子：
4.1
通讯作者：
Asaka, Kinji
中科院分区：
文献类型：
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作者：
Horiuchi, Tetsuya;Mihashi, Toshifumi;Asaka, Kinji
一种离子聚合物-金属复合材料(IPMC)致动器具有独特的性能特性，在本研究中应用于眼睛内。白内障是一种常见的眼病，会导致晶状体混浊。为了治疗白内障，外科医生用人工晶状体(IOL)取代了混浊的晶状体。然而，接受这种治疗的患者在执行需要近距离观察的任务时仍必须佩戴老花镜。我们建议一种新的压控调节型人工晶状体，由IPMC致动器组成，以改变晶状体的焦点。我们通过体外实验研究了IPMC致动器的位移性能与人工晶状体的调节范围之间的关系。在+/-1.2V的外加电压下，该系统的调节范围约为1.15D。通过拉格朗日插值法，我们估计在IPMC驱动器位移为0.14 mm的情况下，我们可以获得4D的屈光度，相当于一个40岁的人的调节范围。
An ion polymer-metal composite (IPMC) actuator has unique performance characteristics that were applied in this study for use within the eye. Cataracts are a common eye disease causing clouding of the lens. To treat cataracts, surgeons replace clouded lenses with intraocular lenses (IOLs). However, patients who receive this treatment must still wear reading glasses for tasks requiring close-up vision. We suggest a new voltage-controlled accommodating IOL consisting of an IPMC actuator to change the lens' focus. We examined the relationship between the displacement performance of an IPMC actuator and the accommodating range of the IOL using in vitro experiments. We show that this system has an accommodating range of approximately 1.15 D under an applied voltage of +/- 1.2 V. By Lagrange interpolation, we estimate that with an IPMC actuator displacement of 0.14 mm, we can achieve a refractive power of 4 D, which is equivalent to the accommodating range of a 40 year old person.