Invention Grant
- Patent Title: Optical unit and endoscope
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Application No.: US17125153Application Date: 2020-12-17
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Publication No.: US11493747B2Publication Date: 2022-11-08
- Inventor: Takehiko Iguchi
- Applicant: OLYMPUS CORPORATION
- Applicant Address: JP Tokyo
- Assignee: OLYMPUS CORPORATION
- Current Assignee: OLYMPUS CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Scully, Scott, Murphy & Presser, P.C.
- Main IPC: G02B23/24
- IPC: G02B23/24 ; A61B1/00

Abstract:
An optical unit includes a movable section that holds a movable lens group and includes a rotation restricting section, a fixed section that holds a fixed lens group and has specific permeability larger than 1.0, n thinned-down sections being provided in the fixed section, and a voice coil motor including an n magnet sections disposed at every (360/n)° around a center axis of the movable section and a coil section disposed in the fixed section. The n magnet sections are respectively housed in n thinned-down sections in a noncontact manner. The n thinned-down sections are formed in asymmetrical positions different from every (360/n)° around the center axis.
Public/Granted literature
- US20210103136A1 OPTICAL UNIT AND ENDOSCOPE Public/Granted day:2021-04-08
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