I suppose people making the decisions (i.e. with the money to invest into such things) are not doing the welding.
This makes me pissed off, it reminds me of my time where "stake holders" would not let me work on simplifying the systems I was charged with maintaining mostly out of fear of something going wrong, but really because it was cheaper for them to pay me to suffer through that shoddy system and all I could really do about it was quit, which I did eventually. where is that startup now? acquired by a bigger one.
But there are real, and pratical use cases out there done by smaller companies in specialized fields. The issue lies in creating something with mainstream appeal, which I do agree with you, that's a whole other story.
It wasn't totally clear, but it looks like Mount Sinai might be using Microsoft hololens.
It does seem like John Hopkins has something interesting.
I am not saying it is impossible, but I certainly would not say I was "surprised" Miller welding has not developed full AR glasses for welding. AR is hard and this is early days.
That being said, I'd imagine the active circuitry required to capture and process the images in realtime (or 30fps, in this case) is expensive and bulkier than what's currently used. Processing stereoscopic 2048x2048 HDR streams is no easy task, you'd basically be looking at a VR helmet once you consider where to put battery and compute unit.
It's a cool invention, but probably one of those "analog computer" ideas that's harder to scale/apply than the cheaper alternatives.
And any processing bulk could be belt worn or even sitting on the ground connected by a cable: you're already tethered to the welder and buffer gas tank after all!
Steve Mann created a prototype yeeaarrss ago that looks incredible, but no one has taken it to the commercial stage yet: http://wearcam.org/mannventions-password-stefanosmannaz13/ma...