Title:
BLADE DRIVE DEVICE AND OPTICAL INSTRUMENT
Document Type and Number:
Japanese Patent JP2016177048
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a blade drive device that can suppress malfunctions due to a leakage magnetic flux.SOLUTION: A blade drive device 1 is the blade drive device 1 to be mounted, by being overlapped in an axial direction of an optical axis P of a lens, to a camera module including the lens, and a lens drive device 60 in which a plurality of permanent magnets 61 is annularly arrayed with a gap around the optical axis P, and the blade drive device comprises: a bottom plate 2 that has an aperture 4 formed so as to set the optical axis P as a center; a blade 20 that regulates the aperture 4; and each of actuators 10A and 10B that is arranged in the bottom plate 2, and actuates the blade 20. Each of the actuators 10A and 10B is arranged at a position corresponding to the gap between a pair of adjacent permanent magnets 61 when viewed from the axial direction.SELECTED DRAWING: Figure 4
Inventors:
YAMAMOTO MASAMI
MASUZAWA KOICHI
MASUZAWA KOICHI
Application Number:
JP2015056088A
Publication Date:
October 06, 2016
Filing Date:
March 19, 2015
Export Citation:
Assignee:
SEIKO PRECISION KK
International Classes:
G03B9/02; G03B9/36
Domestic Patent References:
| JP2010204509A | 2010-09-16 | |||
| JP2008134300A | 2008-06-12 | |||
| JP2009288327A | 2009-12-10 | |||
| JP2011102824A | 2011-05-26 | |||
| JP2007316477A | 2007-12-06 | |||
| JPS5499424A | 1979-08-06 |
Foreign References:
| WO2012107966A1 | 2012-08-16 | |||
| US20070154198A1 | 2007-07-05 |
Attorney, Agent or Firm:
Masatake Shiga
Shingo Suzuki
Nishizawa Kazumi
Field Saki Satoshi
Shingo Suzuki
Nishizawa Kazumi
Field Saki Satoshi