5 working principles of waveguide display

Waveguide displays use ​​total internal reflection​​ (TIR at ​​>41° critical angle​​) to guide light through ​​high-index glass (n=1.8–2.0)​​. ​​Diffractive gratings​​ (300–500nm pitch) couple RGB light into the waveguide with ​​<5% efficiency loss​​. ​​Pancake optics​​ fold the optical path, enabling ​​60° FoV in 5mm-thick guides​​, while ​​nanostructured metasurfaces​​ enhance brightness by ​​200cd/m²​​. ​​Eye tracking​​ (90Hz update) […]

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