5 ms·
It’s not. The mechanism by which it acts is quite different. The lens is a metasurface lens, which has small structures that cause the phases of light to constr
by LolWolf 6y ago
It’s not. The mechanism by which it acts is quite different. The lens is a metasurface lens, which has small structures that cause the phases of light to constructively or destructively interfere. The result is caused by the fact that, by carefully picking how light interferes, one can form an image on the other side of the lens. This differs from a Fresnel lens (or other classical lenses), which essentially form images by having rays of light which emerge from one spot, on one side of the lens, converge to another spot on the other side.
(In particular, wave theory is not needed to predict the behavior of classical lenses.)
- LolWolf 6y ago> [...] which has small structures that cause the phases of light to constructively or destructively interfere This is slightly unclear. I meant more specifically: [...] which has small structures that change the phase of the light, which, in turn, causes it to constructively or destructively interfere [...]