OPTICAL ELEMENT, OPTICAL APPARATUS, AND METHOD FOR MANUFACTURING OPTICAL ELEMENT

An optical element includes an uneven structure having a plurality of convex portions on at least part of an optical surface, including a first convex portion and a second convex portion arranged closer to an optical surface center than the first convex portion. A first convex portion shape as viewed from a first convex portion normal direction has a length r1 in a first direction from the optical surface center toward an optical surface end and a length r2 in a second direction intersecting the first direction. A second convex portion shape as viewed from a second convex portion normal direction has a length r3 in a third direction from the optical surface center toward the optical surface end and a length r4 in a fourth direction intersecting the third direction. The following relationships are satisfied: r1>r2, r3≥r4, r1>r3, and r2