Anti-shake apparatus
First Claim
1. An anti-shake apparatus of a photographing apparatus, comprising:
- a movable unit that has one of an imaging device and a hand-shake correcting lens, and that has a position-detecting coil, and that can be moved in first and second directions, said first direction being perpendicular to an optical axis of a camera lens of said photographing apparatus, and said second direction being perpendicular to said optical axis and said first direction; and
a fixed unit that slidably supports said movable unit in both said first and second directions, and that has a magnetic-field change-detecting unit;
said magnetic-field change-detecting unit having a horizontal magnetic-field change-detecting element which is used for detecting a position of said movable unit in said first direction, as a first location, and a vertical magnetic-field change-detecting element which is used for detecting a position of said movable unit in said second direction, as a second location;
said position-detecting coil being a magnetic-field generating apparatus which is used for detecting said first and second locations, and having first and second position-detecting areas;
said first position-detecting area having first and second horizontal position-detecting segments;
said second position-detecting area having first and second vertical position-detecting segments;
said first and second horizontal position-detecting segments being parts of said position-detecting coil, and facing said horizontal magnetic-field change-detecting element, and being parallel to said second direction;
a direction of the current through said first horizontal position-detecting segment being opposite to a direction of the current through said second horizontal position-detecting segment;
said first and second vertical position-detecting segments being parts of said position-detecting coil, and facing said vertical magnetic-field change-detecting element, and being parallel to said first direction; and
a direction of the current through said first vertical position-detecting segment being opposite to a direction of the current through said second vertical position-detecting segment.
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Accused Products
Abstract
An anti-shake apparatus of a photographing-apparatus comprises a movable-unit and a fixed-unit. The movable-unit has an imaging device and a position-detecting coil, and is movable on a plane which is perpendicular to an optical axis of a camera lens of the photographing-apparatus. The fixed-unit supports the movable-unit so as to be movable on said plane, and has a hall element for detecting a position of the movable-unit on the plane. The position-detecting coil is a magnetic-field generating apparatus which is used for detecting the position, and has first and second position-detecting segments. The first and second position-detecting segments are parts of the position-detecting coil, and face the hall element, and are perpendicular to a movement direction of the movable-unit and to the optical axis. The direction of the current through the first position-detecting segment is opposite to a direction of the current through the second position-detecting segment.
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Citations
9 Claims
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1. An anti-shake apparatus of a photographing apparatus, comprising:
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a movable unit that has one of an imaging device and a hand-shake correcting lens, and that has a position-detecting coil, and that can be moved in first and second directions, said first direction being perpendicular to an optical axis of a camera lens of said photographing apparatus, and said second direction being perpendicular to said optical axis and said first direction; and
a fixed unit that slidably supports said movable unit in both said first and second directions, and that has a magnetic-field change-detecting unit;
said magnetic-field change-detecting unit having a horizontal magnetic-field change-detecting element which is used for detecting a position of said movable unit in said first direction, as a first location, and a vertical magnetic-field change-detecting element which is used for detecting a position of said movable unit in said second direction, as a second location;
said position-detecting coil being a magnetic-field generating apparatus which is used for detecting said first and second locations, and having first and second position-detecting areas;
said first position-detecting area having first and second horizontal position-detecting segments;
said second position-detecting area having first and second vertical position-detecting segments;
said first and second horizontal position-detecting segments being parts of said position-detecting coil, and facing said horizontal magnetic-field change-detecting element, and being parallel to said second direction;
a direction of the current through said first horizontal position-detecting segment being opposite to a direction of the current through said second horizontal position-detecting segment;
said first and second vertical position-detecting segments being parts of said position-detecting coil, and facing said vertical magnetic-field change-detecting element, and being parallel to said first direction; and
a direction of the current through said first vertical position-detecting segment being opposite to a direction of the current through said second vertical position-detecting segment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An anti-shake apparatus of a photographing apparatus, comprising:
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a movable unit that has one of an imaging device and a hand-shake correcting lens, and that has a position-detecting coil, and that can be moved on a plane which is perpendicular to an optical axis of a camera lens of said photographing apparatus; and
a fixed unit that supports said movable unit so as to be movable on said plane, and that has a magnetic-field change-detecting unit for detecting a position of said movable unit on said plane;
said position-detecting coil being a magnetic-field generating apparatus which is used for detecting said position, and having first and second position-detecting segments;
said first and second position-detecting segments being parts of said position-detecting coil, and facing said magnetic-field change-detecting unit, and being perpendicular to a movement direction of said movable unit and to said optical axis; and
a direction of the current through said first position-detecting segment being opposite to a direction of the current through said second position-detecting segment.
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Specification