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Re:A Camera Lens Made from an Iceberg by baybal2 on Thursday February 28, 2019 @02:33PM (#19274320)
My favourites are the liquid crystal lenses. Essentially they are micron scale Fresnel lenses controlled by electric field. No moving parts, very thin, ideal for something like a camera module.

I'm surprised that nobody managed to commercialise it in that niche yet.

Re:A Camera Lens Made from an Iceberg by zeristor on Thursday February 28, 2019 @04:50PM (#19275577)
Do you have a link for that? They have used holographic optical elements to make shorter SLR lenses, although I don't think the image quality was excellent, but if they went to the trouble it must have been fairly good.
Re:A Camera Lens Made from an Iceberg by dekhn on Thursday February 28, 2019 @05:20PM (#19275846)
doesn't really seem commercial grade yet: https://www.imaging-resource.com/news/2015/10/05/this-smartp...