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Mass-producible micro-optical elements by injection compression molding and focused ion beam structured titanium molding tools.
Optics Letters ( IF 3.6 ) Pub Date : 2020-03-01 , DOI: 10.1364/ol.385599
Simon Ristok , Marcel Roeder , Simon Thiele , Mario Hentschel , Thomas Guenther , André Zimmermann , Alois M. Herkommer , Harald Giessen

We demonstrate mass production compatible fabrication of polymer-based micro Fresnel lenses by injection compression molding. The extremely robust titanium-molding tool is structured with high precision by focused ion beam milling. In order to achieve optimal shape accuracy in the titanium we use an iterative design optimization. The inverse Fresnel lens structured into the titanium is transferred to polymers by injection compression molding, enabling rapid mass replication. We show that the optical performance of the molded diffractive Fresnel lenses is in good agreement with simulations, rendering our approach suitable for applications that require compact and high-quality optical elements in large numbers.

中文翻译:

通过注塑成型和聚焦离子束结构化钛成型工具可大量生产微光学元件。

我们演示了通过注射压缩成型的聚合物基微菲涅尔透镜的量产兼容制造。通过聚焦离子束铣削,极其坚固的钛模压模具具有高精度的结构。为了在钛中实现最佳形状精度,我们使用了迭代设计优化。钛结构的菲涅尔反透镜通过注塑成型法转移到聚合物中,从而可以快速进行质量复制。我们表明,模制衍射菲涅耳透镜的光学性能与仿真非常吻合,这使我们的方法适合于需要大量紧凑和高质量光学元件的应用。
更新日期:2020-02-28
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