公开(公告)号：US20240393541A1

公开(公告)日：2024-11-28

申请号：US18695365

申请日：2022-08-01

Applicant: Otsuka Electronics Co., Ltd.

Inventor： Masayoshi MINEGISHI ,  Shiro KAWAGUCHI

IPC: G02B6/36 ,  G02B6/40

Abstract: Provided is a rotary joint including a body-side fiber holding portion in which one end of the faces of light reception fibers are disposed in a first circular area and one end of the faces of light projection fibers are disposed in a first annular area outside of the first circular area, a probe-side fiber holding portion in which one end of the faces of light reception fibers are disposed in a second circular area and a light projection fiber is disposed in a second annular area outside of the second circular area, a rotation support portion that relatively and rotatably supports the body-side fiber holding portion and the probe-side fiber holding portion, and a light separating tube that is provided between the body-side fiber holding portion and the probe-side fiber holding portion.