Metalenses are a relatively fringe optical technology — at least, they were. Until now, it has been largely pursued by startups and scientists but that is changing as Canon has jumped into the fray and not only makes them but also produces the equipment necessary to manufacture them.
And have a bigger sweet spot.
Same for VR headset optics.
Is this currently limited by lens diameter? It seems it would be - so huge glasses would be more forgiving in this sense?
Mainly it’s number of lenses.
High quality camera lenses have like 10-20 lenses, while glasses have … 1
Sir, that’s called a monocle.