公开(公告)号：US20220221621A1

公开(公告)日：2022-07-14

申请号：US17610196

申请日：2020-06-03

Applicant: SONY INTERACTIVE ENTERTAINMENT INC.

Inventor： Fumihiko SATO ,  Manabu ISHIOKA ,  Hiroyuki TATSUBORI ,  Rei MIYAZAKI ,  Shotaro TADA

IPC: G02B3/08

Abstract: There is provided a Fresnel lens capable of restraining flare from occurring. Each of a plurality of prisms (11) of a Fresnel lens (10) has an effective surface (Es) and a noneffective surface (Ns). In each of the prisms (11), the noneffective surface (Ns) has a first noneffective surface (Ns1) and a second noneffective surface (Ns2) that is closer to a crest (11c) of the prism (11) than the first noneffective surface (Ns1). The first noneffective surface is inclined to an optical axis (Z1).