Invention Grant
- Patent Title: Camera blade drive device
- Patent Title (中): 相机刀片驱动装置
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Application No.: US13240292Application Date: 2011-09-22
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Publication No.: US08475064B2Publication Date: 2013-07-02
- Inventor: Longji Bai , Masatoshi Uemura
- Applicant: Longji Bai , Masatoshi Uemura
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- Priority: JP2010-217727 20100928
- Main IPC: G03B9/08
- IPC: G03B9/08

Abstract:
A camera blade drive device includes a base plate 10 that has an aperture 10a forming an optical path, a blade member 20 that is supported by the base plate 10 and opens or closes the aperture 10a, and a driving ring 30 provided to rotate relative to the base plate 10. The camera blade drive is configured to operate the blade member 20 that is linked to the rotating driving ring 30. A permanent magnet 31 is provided on the driving ring 30 and a coil 11 rotates the driving ring 30 by magnetic force generated when the coil 11 is conducting. A magnetic member 12 holds the driving ring 30 in a predetermined position by magnetic attraction with the permanent magnet 31 when the coil 11 is non-conducting.
Public/Granted literature
- US20120076486A1 CAMERA BLADE DRIVE DEVICE Public/Granted day:2012-03-29
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