Blade drive device
AssigneeNidec Copal Corporation
InventorsKazuo Shikama, Shozo Iwato, Kenzo Imai, Longji Bai, Nobuaki Watanabe
Life of this patent
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Abstract
Because a thin blade is disposed in a space that has a thickness in the optical axial direction, which contains a coil and a magnet, when the blade is driven the blade tends to become unstable, making smooth operation of the thin blade difficult. A blade driving device has a driving member; a frame that is provided with a driving frame chamber that contains the driving member; a blade supporting unit that has an opening and that structures a blade chamber that is separate from the driving frame chamber; and a blade member that is contained in the blade chamber, and that is moved by the driving member to advance into the opening.
Claims16
A blade driving device, comprising:
- a driving member;
- a frame equipped with a driving frame chamber that contains the driving member;
- a blade supporting member that has an opening, and that structures a blade chamber that is separate from the driving frame chamber;
- and
- a blade member that is contained in the blade chamber and that is moved by the driving member to advance into the opening,
- wherein the blade supporting member is disposed with a portion thereof protruding to the outside of the frame, with the opening outside of the frame,
- wherein in the frame, a recessed portion is formed in an outer peripheral edge, and the blade supporting member protrudes into the recessed portion,
- wherein a lens frame that has a slit into which the blade supporting member is inserted is contained in the recessed portion,
- wherein the frame includes a first subframe and a second subframe, the first subframe defines a first recess on a first plane perpendicular to the optical axis, the second subframe defines a second recess on a second plane perpendicular to the optical axis, the first recess and the second recess together form the recessed portion,
- wherein the blade supporting member includes a protruding member that extends in a direction parallel to the first plane and the second plane, the protruding member overlaps at least in part with the recessed portion, and the blade supporting member is sandwiched between the two subframes, and
- wherein the opening is formed in the protruding member.
Dependencies are inferred from the claim text.