Nearly dispersionless multicolor metasurface beam deflector for near eye display designed by a physics-driven deep neural network

Chen Wen-Qing; Zhang Da-Sen; Long Shang-Yu; Liu Zhen-Zhen; Xiao Jun-Jun

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Nearly dispersionless multicolor metasurface beam deflector for near eye display designed by a physics-driven deep neural network

机译：几乎无分散的多色元表面束偏转器，用于近乎眼显示器，由物理驱动的深神经网络设计

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Dispersion is one of the most important issues in see-through near eye displays with waveguide technology. In particular, the nanophotonics design is challenging but demanding. In this paper, we propose a design method for a multilayer achromatic metasurface structure for near eye display application by a physics-driven generative neural network. Two in-coupling metagratings under different projector illuminations are presented and numerically verified with the absolute diffraction efficiency over 89%. A beam splitter, which provides a balance between compactness and visual comfort in a single-projector-binocular display, is also designed. Finally, we apply this method to an out-coupling metasurface with the capability of enlarging the visible region by threefold. (C) 2021 Optical Society of America.

机译：色散是波导透明近眼显示器中最重要的问题之一。特别是，纳米光子学设计具有挑战性，但要求很高。本文提出了一种基于物理驱动生成神经网络的近眼显示多层消色差亚表面结构的设计方法。提出了两种不同投影照明下的耦合型亚光栅，并进行了数值验证，其绝对衍射效率超过89%。还设计了一种分束器，它在单投影仪双目显示器的紧凑性和视觉舒适性之间提供了平衡。最后，我们将此方法应用于一个具有将可见区域扩大三倍能力的外耦合超表面。（2021）美国光学学会。

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《Applied optics》 |2021年第13期|共7页
作者
Chen Wen-Qing; Zhang Da-Sen; Long Shang-Yu; Liu Zhen-Zhen; Xiao Jun-Jun;
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Harbin Inst Technol Shenzhen Coll Elect &

Informat Engn Shenzhen Engn Lab Aerosp Detect &

Imaging Shenzhen 518055 Peoples R China;

Harbin Inst Technol Shenzhen Coll Elect &

Informat Engn Shenzhen Engn Lab Aerosp Detect &

Imaging Shenzhen 518055 Peoples R China;

Harbin Inst Technol Shenzhen Coll Elect &

Informat Engn Shenzhen Engn Lab Aerosp Detect &

Imaging Shenzhen 518055 Peoples R China;

Harbin Inst Technol Shenzhen Coll Elect &

Informat Engn Shenzhen Engn Lab Aerosp Detect &

Imaging Shenzhen 518055 Peoples R China;

Harbin Inst Technol Shenzhen Coll Elect &

Informat Engn Shenzhen Engn Lab Aerosp Detect &

Imaging Shenzhen 518055 Peoples R China;

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Nearly dispersionless multicolor metasurface beam deflector for near eye display designed by a physics-driven deep neural network

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