Title:
LINEAR MOTOR, LENS BARREL AND DRIVING DEVICE
Document Type and Number:
Japanese Patent JP2023096628
Kind Code:
A
Abstract:
To provide a linear motor which can improve power efficiency while suppressing an increase in its external size, and to provide a lens barrel and a driving device.SOLUTION: A linear motor 230 is a VCM with a finite track, having a main magnet and two sub-magnets arranged in a Halbach application array. The two sub-magnets are arranged in a posture in which main magnetization directions are arranged to be tilted at approximately 90° from a side facing a back yoke 233b toward a main axis direction 230c with respect to the main magnetization direction of the main magnet, the main magnet is inclined to an inner side of the main magnet in a side in which a part or the whole of a face substantially adjacent to each of the two sub-magnets faces the back yoke 233b in the main magnetization direction of the main magnet, and the two sub-magnets are inclined to the inner sides of the two sub-magnets in a side in which a part or the whole of a face substantially adjacent to the main magnet faces a center yoke 233a in the main magnetization direction of the main magnet.SELECTED DRAWING: Figure 4
Inventors:
SATO KYOSUKE
Application Number:
JP2021212512A
Publication Date:
July 07, 2023
Filing Date:
December 27, 2021
Export Citation:
Assignee:
CANON KK
International Classes:
G02B7/04; H02K33/18; G02B7/08
Attorney, Agent or Firm:
Betsuyaku Shigehisa