光学
镜头(地质)
飞秒
平面的
材料科学
数值孔径
堆积
景深
波长
衍射
激光器
微透镜
光圈(计算机存储器)
光电子学
物理
计算机科学
计算机图形学(图像)
核磁共振
声学
作者
Simon Thiele,Christof Pruß,Alois Herkommer,Harald Gießen
出处
期刊:Optics Express
[The Optical Society]
日期:2019-11-20
卷期号:27 (24): 35621-35621
被引量:38
摘要
Planar lenses such as metalenses and diffractive lenses exhibit severe field-dependent aberrations when imaging extended objects with high numerical aperture. This problem can be overcome by stacking at least two of such devices on top of each other. In this work, we present such stacked imaging systems, namely doublets and triplets of diffractive optical elements. They are fabricated by femtosecond direct laser writing in one single step without the need for alignment in sizes of below 200 µm in diameter and 100 µm in height. The lenses allow for efficient sub µm resolution imaging at visible wavelengths combined with a full field-of-view of up to 60°. As additional benefit, our approach dramatically reduces the writing times of 3D printed lens systems to below 15 minutes.
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