Very good #article and #video on how *not* to #build your own #ar https://hackaday.com/2021/08/19/why-you-.. I would personally like to see a " #vr " setup with a #camera that does the #passthrough to the #display - this would ultimately solve the #optics problem. For AR to 'interact' with the real world anyway, you're going to want a camera to do processing.