BLADE DRIVING DEVICE, IMAGING DEVICE AND ACTUATOR COMPRISING THE BLADE DRIVING DEVICE
First Claim
1. A blade driving device, comprising:
- a base plate comprising an opening for an optical path;
a first blade and a second blade, at different locations on the base plate, and that each rotate to open/close the opening;
a first magnet secured around an axis of rotation of the first blade;
a second magnet secured around an axis of rotation of the second blade;
a yoke secured on the base plate; and
a first coil and a second coil coiled on the yoke, wherein;
the yoke comprises;
a first magnetic pole portion that is adjacent to the first magnet,a second magnetic pole portion that is adjacent to the second magnet, anda connecting portion for connecting the first magnetic pole portion and the second magnetic pole portion; and
wherein the first magnetic pole portion and the second magnetic pole portion each comprise;
an adjacent piece that is adjacent to the corresponding magnet, andan extending portion that is continuous with the adjacent piece and that is provided extending in a direction that is perpendicular to the blade supporting face of the base plate.
1 Assignment
0 Petitions
Accused Products
Abstract
A blade driving device having a base plate with an opening for an optical path; first and second blades, at different locations on the base plate, and each rotate to open/close the opening. A first magnet secured to the first blade; a second magnet secured to the second blade; a yoke secured on the base plate; and a first and second coil coiled on the yoke. The yoke has a first magnetic pole portion adjacent to the first magnet, a second magnetic pole portion adjacent to the second magnet, and connecting portions, connecting the first magnetic pole portion and the second magnetic pole portion. The first magnetic pole portion and the second magnetic pole portion have, respectively, adjacent pieces and adjacent to the corresponding magnets, and extending portions and continuous with the adjacent pieces and provided extending in a direction perpendicular to the blade supporting face of the base plate.
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Citations
8 Claims
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1. A blade driving device, comprising:
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a base plate comprising an opening for an optical path; a first blade and a second blade, at different locations on the base plate, and that each rotate to open/close the opening; a first magnet secured around an axis of rotation of the first blade; a second magnet secured around an axis of rotation of the second blade; a yoke secured on the base plate; and a first coil and a second coil coiled on the yoke, wherein; the yoke comprises; a first magnetic pole portion that is adjacent to the first magnet, a second magnetic pole portion that is adjacent to the second magnet, and a connecting portion for connecting the first magnetic pole portion and the second magnetic pole portion; and wherein the first magnetic pole portion and the second magnetic pole portion each comprise; an adjacent piece that is adjacent to the corresponding magnet, and an extending portion that is continuous with the adjacent piece and that is provided extending in a direction that is perpendicular to the blade supporting face of the base plate. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An actuator comprising:
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a first magnet and a second magnet that are each supported so as to enable rotation, a yoke, and a first coil and a second coil that are wound on the yoke, wherein; the yoke comprises a first magnetic pole portion that corresponds to the first magnet, a second magnetic pole portion that corresponds to the second magnet, and a connecting portion for connecting the first magnetic pole portion and the second magnetic pole portion; and the first magnetic pole portion and the second magnetic pole portion each comprise an adjacent piece that is near to one side, in the radial direction, in respect to the corresponding magnet, and an extending portion that is provided extending in a direction that is perpendicular in respect to this adjacent piece.
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Specification