公开(公告)号：US20180224612A1

公开(公告)日：2018-08-09

申请号：US15946125

申请日：2018-04-05

申请人： NALUX CO., LTD.

发明人： Soshi TSURUTA ,  Hironori HORIKIRI ,  Hisashi MAKI ,  Takahiro FUJIOKA ,  Katsumoto IKEDA

IPC分类号： G02B6/42

CPC分类号： G02B6/4214 ,  G02B6/42 ,  G02B6/4221

摘要： An optical element to be interposed between an optical transmission line and a light-emitting element or a light-receiving element such that an optical path from one side to the other passes through the optical element is provided. At least one surface of the optical element is provided with a first light-collecting area and a second light-collecting area. A surface of the first light-collecting area is configured such that light from the one side is received by the other side. A surface of the second light-collecting area is an annular surface or a part of the annular surface and is configured such that light that has passed through the second light-collecting area forms an image in the shape of a ring or a part of the ring at a position between the optical element and the other side.