> They may use absorbing substrate, or may add a backside coating. Yup, since the optic is planar it can integrate with backend coating processes > Contact im

> They may use absorbing substrate, or may add a backside coating. Yup, since the optic is planar it can integrate with backend coating processes > Contact image sensors ... No clue how this relates to meta-lenses. I'm also not sure how "contact" got into the copy > I suspect it's just a bad diagram. Their barrel design is impossible to manufacture. Yea, the barrels end up looking like more traditional barrels Source: Metalenz CTO