Title:
LENS BARREL AND IMAGING DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/138573
Kind Code:
A1
Abstract:
In order to increase the movement amount of a lens moved by a voice coil motor, this lens barrel comprises: first and second yokes having lengths in the optical axis direction; a third yoke that has a length in the optical axis direction and is disposed between the first yoke and the second yoke; a first magnet disposed in the first yoke; a second magnet disposed in the second yoke; a coil that penetrates the third yoke and is movable in the optical axis direction through electromagnetic interaction between the first magnet and the second magnet; and a lens-holding frame that holds the lens and is movable in the optical axis direction integrally with the coil. The third yoke has a groove along the optical axis direction.
Inventors:
MUTO AZUSA (JP)
USUI KAZUTOSHI (JP)
USUI KAZUTOSHI (JP)
Application Number:
PCT/JP2021/047060
Publication Date:
June 30, 2022
Filing Date:
December 20, 2021
Export Citation:
Assignee:
NIKON CORP (JP)
International Classes:
G02B7/04
Foreign References:
| JP2006146133A | 2006-06-08 | |||
| JPH0534562A | 1993-02-12 | |||
| JP2008281820A | 2008-11-20 | |||
| JP2020064284A | 2020-04-23 |
Attorney, Agent or Firm:
KATAYAMA, Shuhei (JP)
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