Title:
ENDOSCOPE AND IMAGING UNIT
Document Type and Number:
WIPO Patent Application WO/2022/259550
Kind Code:
A1
Abstract:
An imaging unit 30 is provided with: an observation optical system 33 comprising a rear group lens L2 and a mobile lens L3; a rear group lens frame 57 that holds the rear group lens L2; a mobile lens frame 65 that holds the mobile lens L3 and can move forward and rearward inside the rear group lens frame 57 along the optical axis O of the observation optical system 33; an actuator 49 that comprises a guide pipe 70 and a head member 72, and transmits power to the mobile lens frame 65 by means of forward/rearward movement of the head member 72 relative to the guide pipe 70; and a second stopper member 58 that is positioned and fixed to the rear group lens frame 57, and defines a withdrawal position of the mobile lens frame 65 in the optical axis O direction. The second stopper member 58 also functions as a holding member for holding the distal end side of the guide pipe 70.
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Inventors:
WATAYA YUICHI (JP)
Application Number:
PCT/JP2021/022397
Publication Date:
December 15, 2022
Filing Date:
June 11, 2021
Export Citation:
Assignee:
OLYMPUS CORP (JP)
International Classes:
A61B1/00; G02B7/02; G02B7/04; G02B23/24
Domestic Patent References:
| WO2018207442A1 | 2018-11-15 |
Foreign References:
| JP2017196171A | 2017-11-02 | |||
| JP2018081270A | 2018-05-24 | |||
| JP2000210249A | 2000-08-02 |
Attorney, Agent or Firm:
ITOH-SHIN PATENT OFFICE (JP)
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