I’m still half convinced that Apple's AR wearable won’t need any optical breakthroughs, because it won't use optical compositing. If there’s one thing Apple's

I’m still half convinced that Apple's AR wearable won’t need any optical breakthroughs, because it won't use optical compositing. If there’s one thing Apple's mobile engineering is uniquely good at, it’s building a low-latency pipeline. I think they could get the camera-to-screen latency low enough that they could build an AR wearable that is essentially a VR headset with wide-angle cameras on the front: This would enable the high-fidelity compositing that you already see on iPads and iPhones, basically leapfrogging everything else in the AR space without having to invent novel optical solutions.