Title:
OPTICAL UNIT AND ENDOSCOPE
Document Type and Number:
WIPO Patent Application WO/2023/084656
Kind Code:
A1
Abstract:
An optical unit according to the present invention comprises: a cylindrical fixed part; a cylindrical movable part that is provided so as to be movable inside the fixed part and that holds a lens; a first sliding member that is interposed between the fixed part and the movable part and that slides along with the movement of the movable part; a second sliding member that is interposed at a position different from that of the first sliding member between the fixed part and the movable part and that slides along with the movement of the movable part; a driving part that has a coil fixed to the fixed part and a magnet provided to the movable part and that moves the movable part with respect to the fixed part in the optical axis direction of the lens; and a biasing member that is provided outside the movable part and that generates a biasing force for drawing the movable part to the fixed part side by generating a biasing force in the magnet.
Inventors:
HARADA JUNYA (JP)
Application Number:
PCT/JP2021/041420
Publication Date:
May 19, 2023
Filing Date:
November 10, 2021
Export Citation:
Assignee:
OLYMPUS MEDICAL SYSTEMS CORP (JP)
International Classes:
G02B7/04; A61B1/00; G02B23/24
Foreign References:
| JP2006227062A | 2006-08-31 | |||
| JP2013210420A | 2013-10-10 | |||
| JP2014197067A | 2014-10-16 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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