Position-detecting 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 can be moved in first and second directions, said first direction being perpendicular to an optical axis of a photographing 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;
one of said movable unit and said fixed unit having a magnetic-field change-detecting unit which has a horizontal magnetic-field change-detecting element for detecting a first location in said first direction of said movable unit, and a vertical magnetic-field change-detecting element for detecting a second location in said second direction of said movable unit;
another of said movable unit and said fixed unit having a position-detecting magnet unit which is used for detecting said first and second locations, and which faces said magnetic-field change-detecting unit, and which has first and second horizontal position-detecting magnets and first and second vertical position-detecting magnets;
the N pole and S pole of said first horizontal position-detecting magnet being arranged in a third direction which is parallel to said optical axis and is perpendicular to said first and second directions;
the N pole and S pole of said second horizontal position-detecting magnet being arranged in said third direction;
the polarities of said first and second horizontal position-detecting magnets being arranged in opposite directions, in said third direction;
said N pole of said first horizontal position-detecting magnet and said S pole of said second horizontal position-detecting magnet being separated in said first direction by a first distance, and facing said horizontal magnetic-field change-detecting element;
said first and second horizontal position-detecting magnets being used for detecting said first location;
the N pole and S pole of said first vertical position-detecting magnet being arranged in said third direction;
the N pole and S pole of said second vertical position-detecting magnet being arranged in said third direction;
the polarities of said first and second vertical position-detecting magnets being arranged in opposite directions, in said third direction;
said N pole of said first vertical position-detecting magnet and said S pole of said second vertical position-detecting magnet being separated in said second direction by a second distance, and facing said vertical magnetic-field change-detecting element; and
said first and second vertical position-detecting magnets being used for detecting said second location.
3 Assignments
0 Petitions
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 is movable in first and second directions. The fixed-unit slidably supports the movable-unit in both the first and second directions. The movable-unit has a horizontal hall-element for detecting a first location in the first direction of the movable-unit, and a vertical hall-element for detecting a second location in the second direction of the movable-unit. The fixed-unit has a magnet unit which is used for detecting the first and second locations, and which has first and second horizontal magnets and first and second vertical magnets. The polarities of the first and second horizontal magnets are arranged in opposite directions, in the third direction. N-pole of the first horizontal magnet and S-pole of the second horizontal magnet are separated in the first direction by a first distance, and face the horizontal hall-element.
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Citations
15 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 can be moved in first and second directions, said first direction being perpendicular to an optical axis of a photographing 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;
one of said movable unit and said fixed unit having a magnetic-field change-detecting unit which has a horizontal magnetic-field change-detecting element for detecting a first location in said first direction of said movable unit, and a vertical magnetic-field change-detecting element for detecting a second location in said second direction of said movable unit;
another of said movable unit and said fixed unit having a position-detecting magnet unit which is used for detecting said first and second locations, and which faces said magnetic-field change-detecting unit, and which has first and second horizontal position-detecting magnets and first and second vertical position-detecting magnets;
the N pole and S pole of said first horizontal position-detecting magnet being arranged in a third direction which is parallel to said optical axis and is perpendicular to said first and second directions;
the N pole and S pole of said second horizontal position-detecting magnet being arranged in said third direction;
the polarities of said first and second horizontal position-detecting magnets being arranged in opposite directions, in said third direction;
said N pole of said first horizontal position-detecting magnet and said S pole of said second horizontal position-detecting magnet being separated in said first direction by a first distance, and facing said horizontal magnetic-field change-detecting element;
said first and second horizontal position-detecting magnets being used for detecting said first location;
the N pole and S pole of said first vertical position-detecting magnet being arranged in said third direction;
the N pole and S pole of said second vertical position-detecting magnet being arranged in said third direction;
the polarities of said first and second vertical position-detecting magnets being arranged in opposite directions, in said third direction;
said N pole of said first vertical position-detecting magnet and said S pole of said second vertical position-detecting magnet being separated in said second direction by a second distance, and facing said vertical magnetic-field change-detecting element; and
said first and second vertical position-detecting magnets being used for detecting said second location. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A position-detecting apparatus, comprising:
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a movable unit that has can be moved in a first direction; and
a fixed unit that slidably supports said movable unit in said first direction;
one of said movable unit and said fixed unit having a magnetic-field change-detecting unit which has a magnetic-field change-detecting element for detecting a first location in said first direction of said movable unit;
another of said movable unit and said fixed unit having a position-detecting magnet unit which is used for detecting said first location, and which faces said magnetic-field change-detecting unit, and which has first and second position-detecting magnets;
the N pole and S pole of said first position-detecting magnet being arranged in a second direction which is perpendicular to said first direction;
the N pole and S pole of said second position-detecting magnet being arranged in said second direction;
the polarities of said first and second position-detecting magnets being arranged in opposite directions, in said second direction;
said N pole of said first position-detecting magnet and said S pole of said second position-detecting magnet being separated in said first direction by a first distance, and facing said magnetic-field change-detecting element; and
said first and second position-detecting magnets being used for detecting said first location. - View Dependent Claims (13, 14, 15)
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Specification