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On Metalenses with Arbitrarily Wide Field of View
ACS Photonics ( IF 6.5 ) Pub Date : 2020-06-30 , DOI: 10.1021/acsphotonics.0c00479 Augusto Martins 1 , Kezheng Li 2 , Juntao Li 3 , Haowen Liang 3 , Donato Conteduca 2 , Ben-Hur V. Borges 1 , Thomas F. Krauss 2 , Emiliano R. Martins 1
ACS Photonics ( IF 6.5 ) Pub Date : 2020-06-30 , DOI: 10.1021/acsphotonics.0c00479 Augusto Martins 1 , Kezheng Li 2 , Juntao Li 3 , Haowen Liang 3 , Donato Conteduca 2 , Ben-Hur V. Borges 1 , Thomas F. Krauss 2 , Emiliano R. Martins 1
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Metalenses are nanostructured surfaces that mimic the functionality of optical elements. Many exciting demonstrations have already been made, for example, focusing into diffraction-limited spots or achromatic operation over a wide wavelength range. The key functionality that is yet missing, however, and that is most important for applications such as smartphones or virtual reality, is the ability to perform the imaging function with a single element over a wide field of view. Here, by relaxing the constraint on diffraction-limited resolution, we demonstrate the ability of single-layer metalenses to perform wide field of view (WFOV) imaging while maintaining high resolution suitable for most applications. We also discuss the WFOV physical properties and, in particular, we show that such a WFOV metalens mimics a spherical lens in the limit of infinite radius and infinite refractive index. Finally, we use Fourier analysis to explain the dependence of the FOV on the numerical aperture.
中文翻译：
论具有广泛视野的金属感
Metalenses是模仿光学元件功能的纳米结构表面。已经进行了许多令人兴奋的演示，例如，聚焦在宽波长范围内的衍射极限点或消色差操作上。但是，对于智能手机或虚拟现实之类的应用程序而言，最重要的功能仍然缺少，那就是能够在广阔的视野范围内用单个元素执行成像功能。在这里，通过放宽对衍射极限分辨率的限制，我们证明了单层金属镜能够执行宽视场（WFOV）成像，同时保持适合大多数应用的高分辨率的能力。我们还将讨论WFOV的物理特性，尤其是 我们表明，这种WFOV金属元素在无限半径和无限折射率的限制下模仿了球形透镜。最后，我们使用傅立叶分析来解释FOV对数值孔径的依赖性。
更新日期：2020-08-19
中文翻译：
论具有广泛视野的金属感
Metalenses是模仿光学元件功能的纳米结构表面。已经进行了许多令人兴奋的演示，例如，聚焦在宽波长范围内的衍射极限点或消色差操作上。但是，对于智能手机或虚拟现实之类的应用程序而言，最重要的功能仍然缺少，那就是能够在广阔的视野范围内用单个元素执行成像功能。在这里，通过放宽对衍射极限分辨率的限制，我们证明了单层金属镜能够执行宽视场（WFOV）成像，同时保持适合大多数应用的高分辨率的能力。我们还将讨论WFOV的物理特性，尤其是 我们表明，这种WFOV金属元素在无限半径和无限折射率的限制下模仿了球形透镜。最后，我们使用傅立叶分析来解释FOV对数值孔径的依赖性。
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