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首页> 外文期刊>Applied optics >Design of a large aperture tunable refractive Fresnel liquid crystal lens
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Design of a large aperture tunable refractive Fresnel liquid crystal lens

机译：设计大型孔径可调折射菲涅耳液晶透镜

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A large aperture tunable lens based on liquid crystals, which is considered for near-to-eye applications, is designed, built, and characterized. Large liquid crystal lenses with high quality are limited by very slow switching speeds due to the large optical path difference (OPD) required. To reduce the switching time of the lens, the thickness is controlled through the application of several phase resets, similar to the design of a Fresnel lens. A main point of the paper is the design of the Fresnel structure to have a minimal effect on the image quality. Our modeling and experimental results demonstrate that minimal image degradation due to the phase resets is observable when the segment spacing is chosen by taking into account human eye resolution. Such lenses have applications related to presbyopia and, in virtual reality systems, to solve the well-known issue of accommodation-convergence mismatch. (C) 2017 Optical Society of America.
机译：基于液晶的大型光圈可调透镜，被认为是近乎眼应用的，设计，构建和表征。 由于所需的大光路径（OPD），具有高质量的大型液晶透镜受到非常慢的开关速度的限制。 为了减小镜头的切换时间，通过应用多个相复位来控制厚度，类似于菲涅耳透镜的设计。 纸张的主要观点是菲涅耳结构的设计对图像质量有最小的影响。 Our modeling and experimental results demonstrate that minimal image degradation due to the phase resets is observable when the segment spacing is chosen by taking into account human eye resolution. 这样的镜片具有与老花眼和虚拟现实系统相关的应用，以解决众所周知的住宿收敛不匹配问题。 （c）2017年美国光学学会。

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