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Optical performance of a PDMS tunable lens with automatically controlled applied stress

机译：具有自动控制的施加应力的PDMS可调透镜的光学性能

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The advances in the field of adaptive optics and in the fabrication of tunable optical components capable to automatically modify their physical features are of great interest in areas like machine vision, imaging systems, ophthalmology, etc. Such components like tunable lenses are used to reduce the overall size of optical setups like in small camera systems and even to imitate some biological functions made by the human eye. In this direction, in the last years we have been working in the development and fabrication of PDMS-made tunable lenses and in the design of special mechanical mounting systems to manipulate them. A PDMS-made tunable lens was previously designed by us, following the scheme reported by Navarro et al. in 1985, in order to mimic the accommodation process made by the crystalline lens of the human eye. The design included a simulation of the application of radial stress onto the lens and it was shown that the effective focal length was indeed changed. In this work we show the fabrication process of this particular tunable lens and an optimized mechanism that is able to automatically change the curvature of both surfaces of the lens by the application of controlled stress. We also show results of a study and analysis of aberrations performed to the Solid Elastic Lens (SEL).
机译：在诸如机器视觉，成像系统，眼科等领域中，自适应光学领域以及能够自动改变其物理特征的可调谐光学组件的制造方面的进展令人瞩目。光学装置的整体尺寸，例如在小型相机系统中，甚至模仿人眼产生的某些生物学功能。在这个方向上，最近几年我们一直在开发和制造PDMS制成的可调透镜，并设计用于操纵它们的特殊机械安装系统。我们先前按照Navarro等人报告的方案设计了PDMS制的可调透镜。 1985年，为了模仿人眼晶状体的调节过程。该设计包括对径向应力施加到透镜上的模拟，结果表明有效焦距确实发生了变化。在这项工作中，我们展示了这种特殊的可调透镜的制造过程以及一种优化的机构，该机构能够通过施加受控应力来自动更改透镜两个表面的曲率。我们还显示了对固态弹性透镜（SEL）进行的像差研究和分析的结果。

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