Title:
ROTARY JOINT AND OPTICAL MEASUREMENT DEVICE USING SAME
Document Type and Number:
Japanese Patent JP2023053561
Kind Code:
A
Abstract:
To suppress optical crosstalk between a light-emitting channel and a light-receiving channel and to suppress light pulsation during rotating operation.SOLUTION: A rotary joint 40 includes: a body-side fiber holding section 25 in which end faces of respective light-receiving fibers are disposed in a first circular region and end faces of respective light-emitting fibers are disposed in a first annular region further to the outside; a probe-side fiber holding section 33 in which end faces of respective light-receiving fibers are disposed in a second circular region and light-emitting fibers are disposed in a second annular region further to the outside; a rotation support section 41 that supports the body-side fiber holding section 25 and the probe-side fiber holding section 33 so as to be rotatable relative to each other; and a light-separation tube 42 provided between the body-side fiber holding section 25 and the probe-side fiber holding section 33.SELECTED DRAWING: Figure 1
Inventors:
MINEGISHI MASAYOSHI
KAWAGUCHI SHIRO
KAWAGUCHI SHIRO
Application Number:
JP2021162667A
Publication Date:
April 13, 2023
Filing Date:
October 01, 2021
Export Citation:
Assignee:
OTSUKA DENSHI CO LTD
International Classes:
G02B6/26; G02B6/04; G02B6/40
Attorney, Agent or Firm:
Patent Attorney Corporation Haruka International Patent Office
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