Focusing the entire visible spectrum and white light - combination of all the colors of the spectrum—is so challenging because each wavelength moves through materials at different speeds. This creates image distortions known as chromatic aberrations. Cameras and optical instruments use multiple curved lenses of different thicknesses and materials to correct these aberrations, which, of course, adds to the bulk of the device. “Metalenses are thin, easy to fabricate and cost effective.”
I read about this and the like over the past several years. I wonder how long this eventually, hopefully will happen. Changes in camera gear of that sort don’t happen overnight due to economies of scale; natural disasters; production challenges; company resources and attitudes; fiduciary duties to shareholders and sharks, currencies, etc., etc.
But yeah, it would be wonderful tech to have for a low low price of ____.