Optical element, optical system, lens apparatus, and image pickup apparatus

Abstract

An optical element comprising a plurality of annulus sections concentrically arranged. The plurality of annulus sections include a first annulus section that includes a plurality of first structures each having a first height, and a plurality of second structures each having a second height different from the first height. The plurality of first structures have mutually different widths in a radial direction. The plurality of second structures have mutually different widths in the radial direction.

Dependencies are inferred from the claim text.