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Polymer-microstructures - are they applicable as optical components?

机译：聚合物微结构-它们是否可用作光学组件？

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摘要

We present a new method to manufacture arrays of microlenses with varying diameter and/or varying focal length on the same substrate material. The method combines direct laser machining with a casting method and is based on the exposure of poly-methylmethacrylate (PMMA) to an UV Excimer Laser (248 nm). A following thermal treatment of the PMMA results in spherical caps in the PMMA which subsequently serves as a mould to replicate inverse structures in poly-dimethylsiloxane (PDMS) by casting. Lenses with a focal length of 300 μm to 4,000 μm have been realized hi a PDMS replicate from the PMMA, however, this method is not limited to these materials if the soft embossing technology is applied where an elastomer such as PDMS serves as the mould.
机译：我们提出了一种在相同的基板材料上制造具有不同直径和/或不同焦距的微透镜阵列的新方法。该方法将直接激光加工与铸造方法结合在一起，并且基于聚甲基丙烯酸甲酯（PMMA）在紫外线准分子激光（248 nm）下的曝光。对PMMA进行以下热处理后，会在PMMA中形成球形盖，随后将其用作铸模，通过浇铸复制聚二甲基硅氧烷（PDMS）中的逆结构。在从PMMA复制PDMS的过程中，已经实现了焦距为300μm至4,000μm的透镜，但是，如果在诸如PDMS的弹性体作为模具的情况下应用了软压花技术，则该方法不限于这些材料。

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