Patent ID: 8619371

Claim:
A plastic lens comprising: a first surface and a second surface that each have an optical function, wherein the second surface comprises: an optically functional concave aspect, a recess arranged along an outer perimeter of the concave aspect and formed around an optical axis, a first protruding portion arranged at a boundary of the concave aspect and the recess around the optical axis, a second protruding portion arranged at a boundary of the recess and the peripheral surface and formed around the optical axis, and a gate portion formed on the peripheral surface, at a position where a resin injection outlet is arranged during formation of the plastic lens; a peripheral surface formed at a periphery of the first surface and the second surface; a central portion of a thickness that is thinner than that of a peripheral portion of the plastic lens; a first inclined aspect between an apex of the recess and the first protruding portion; and a second inclined aspect between an apex of the recess and the second protruding portion, wherein the plastic lens is formed by injection of resin, and a conditional expression (1) Î¸ 1 <Î¸ 2 is satisfied, where Î¸ 1 is an angle between a plane orthogonal to the optical axis of the plastic lens and the first inclined aspect, and Î¸ 2 is an angle between the plane orthogonal to the optical axis of the plastic lens and the second inclined aspect.