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US 7,460,776 B2Granted
Stage apparatus and camera shake correction apparatus using the stage apparatus
AssigneeHoya Corporation
InventorsKen Hirunuma, Shigeo Enomoto
Life of this patent
Estimating the term…
Abstract
A stage apparatus includes a stationary support member, a movable stage plate supported by the stationary support member to be movable in a plane relative to the stationary support member, at least one magnetic force generator which is provided integral with the stationary support member, and at least one coil which is mounted on the movable stage plate and receives a magnetic force generated by the magnetic force generator to produce a driving force for driving the movable stage plate in the plane. At least one hole in which the coil is fixedly fitted is formed on the movable stage plate.
Claims19
A stage apparatus comprising:
- a stationary support member;
- a movable stage plate supported by said stationary support member to be movable in a plane relative to said stationary support member;
- at least one magnetic force generator which is provided integral with said stationary support member;
- and
- at least one coil which is mounted on said movable stage plate and receives a magnetic force generated by said magnetic force generator to produce a driving force for driving said movable stage plate in said plane,
- wherein at least one hole in which said coil is fixedly fitted is formed on said movable stage plate.
3 more elements
A camera shake correction apparatus having a stage apparatus comprising:
- a stationary support member;
- a movable stage plate supported by said stationary support member to be movable in a plane relative to said stationary support member;
- an X-axis direction magnetic force generator and a Y-axis direction magnetic force generator which are provided integral with said stationary support member;
- an X-axis direction drive coil for generating a driving force in a specific X-axis direction in said plane and receives a magnetic force generated by said X-axis direction magnetic force generator to produce a driving force for driving said movable stage plate in said X-axis direction in said plane;
- a Y-axis direction drive coil for generating a driving force in a Y-axis direction, which is perpendicular to said X-axis direction, in said plane and receives a magnetic force generated by said Y-axis direction magnetic force generator to produce a driving force for driving said movable stage plate in said Y-axis direction in said plane;
- an X-direction-coil hole in which said X-axis direction drive coil is fixedly fitted;
- a Y-direction-coil hole in which said Y-axis direction drive coil is fixedly fitted;
- an X-direction-sensor hole formed on said movable stage plate having an X-axis direction position sensor fixedly fitted therein for detecting a position of said movable stage plate in said X-axis direction in said plane;
- a Y-direction-sensor hole formed on said movable stage plate having a Y-axis direction position sensor fixedly fitted therein for detecting a position of said movable stage plate in and Y-axis direction in said plane;
- wherein said camera shake correction apparatus comprises:
- a camera which incorporates said stage apparatus;
- an image pickup device positioned behind a photographing optical system of said camera, having an imaging surface located on an image plane of said photographing optical system, said image pick device being movable together with said movable stage plate;
- a camera shake detection sensor which detects camera shake of said camera;
- and
- a controller which applies a voltage to at least one of said X-axis direction drive coil and said Y-axis direction drive coil to reduce a difference between the amount of said camera shake detected by said camera shake detection sensor and the amount of movement of said movable stage plate which is detected using said X-axis direction position sensor and said Y-axis direction position sensor.
12 more elements
A camera shake correction apparatus having a stage apparatus comprising:
- a stationary support member;
- a movable stage plate supported by said stationary support member to be movable in a plane relative to said stationary support member;
- an X-axis direction magnetic force generator and a Y-axis direction magnetic force generator which are provided integral with said stationary support member;
- an X-axis direction drive coil for generating a driving force in a specific X-axis direction in said plane and receives a magnetic force generated by said X-axis direction magnetic force generator to produce a driving force for driving said movable stage plate in said X-axis direction in said plane;
- a Y-axis direction drive coil for generating a driving force in a Y-axis direction, which is perpendicular to said X-axis direction, in said plane and receives a magnetic force generated by said Y-axis direction magnetic force generator to produce a driving force for driving said movable stage plate in said Y-axis direction in said plane;
- an X-direction-coil hole in which said X-axis direction drive coil is fixedly fitted;
- a Y-direction-coil hole in which said Y-axis direction drive coil is fixedly fitted;
- an X-direction-sensor hole formed on said movable stage plate having an X-axis direction position sensor fixedly fitted therein for detecting a position of said movable stage plate in said X-axis direction in said plane;
- a Y-direction-sensor hole formed on said movable stage plate having a Y-axis direction position sensor fixedly fitted therein for detecting a position of said movable stage plate in and Y-axis direction in said plane;
- wherein said camera shake correction apparatus comprises:
- a camera which incorporates said stage apparatus;
- a correction lens located in front of an image plane of a photographing optical system of said camera, positioned so that an optical axis of said correction lens coincides with an optical axis of said photographing optical system, and being movable together with said movable stage plate;
- a camera shake detection sensor which detects camera shake of said camera;
- and
- a controller which applies a voltage to at least one of said X-axis direction drive coil and said Y-axis direction drive coil to reduce a difference between the amount of said camera shake detected by said camera shake detection sensor and the amount of movement of said movable stage plate which is detected using said X-axis direction position sensor and said Y-axis direction position sensor.
12 more elements
Dependencies are inferred from the claim text.