Tubular astigmatism-tunable fluidic lens
Tubular astigmatism-tunable fluidic lens
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DOI：
10.1364/ol.41.002735
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发表时间：
2016-06-15
期刊：
影响因子：
3.6
通讯作者：
Zappe, Hans
中科院分区：
文献类型：
--
作者：
Kopp, Daniel;Zappe, Hans
我们展示了一种新的方法来制造三维液体透镜，可以调整焦距和散光。使用通过电润湿的致动，可以独立地调谐任意方向上的像散，在正交取向之间几乎没有串扰。该透镜基于在平面聚酰亚胺箔上结构化并随后被轧制的电极，使得能够沿着透镜的方位角和径向方向对复杂电极进行高分辨率图案化。基于通过流体和光学模拟建立的设计，通过使用Shack-Hartmann波前传感器测量的相应Zernike系数的变化来实验验证像散调谐。可以看出，通过施加50 V-rms范围内的电压，后焦距可以调节5 mm，0度和45度像散可以调节3 μ m。据观察，串扰与其他像差是非常低的，这表明一种新的手段，用于像散控制成像系统。(C)2016美国光学学会
We demonstrate a new means to fabricate three-dimensional liquid lenses which may be tuned in focal length and astigmatism. Using actuation by electrowetting-on-dielectrics, astigmatism in arbitrary directions may be tuned independently, with almost no cross talk between orthogonal orientations. The lens is based on electrodes structured on planar polyimide foils and subsequently rolled, enabling high-resolution patterning of complex electrodes along the azimuthal and radial directions of the lens. Based on a design established through fluidic and optical simulations, the astigmatism tuning is experimentally verified by a change of the corresponding Zernike coefficients measured using a Shack-Hartmann wavefront sensor. It was seen that the back focal length can be tuned by 5 mm and 0 degrees and 45 degrees astigmatism by 3 mu m through application of voltages in the range of 50 V-rms. It was observed that the cross talk with other aberrations is very low, suggesting a novel means for astigmatism control in imaging systems. (C) 2016 Optical Society of America