Stage apparatus and camera shake correction apparatus using the stage apparatus

• US 20050185057A1
• Filed: 02/23/2005
• Published: 08/25/2005
• Est. Priority Date: 02/24/2004
• Status: Active Grant

• Current Assignee: Pentax Corporation (Hoya Corporation)
• Original Assignee: Pentax Corporation (Hoya Corporation)
• Inventors: Seo, Shuzo
• Granted Patent: US 7,379,092 B2
• Time in Patent Office: Days
• US Class Current: 348/208.400
• CPC Class Codes: G02B 27/646 compensating for small deviations, e.g. due to vibration or shake movement of one or more optical elements for control of motion blur in cameras, projectors or printers G03B2205/0007; image stabilisation in cameras peculiar to the presence or use of an electronic image sensor H04N23/68
• CPC Class Codes: H04N 23/68 for stable pick-up of the scene, e.g. compensating for camera body vibrations
• CPC Class Codes: H04N 23/687 by shifting the lens or sensor position

Abstract

A stage apparatus includes a stationary support plate; an X-direction moving member supported on the stationary support plate by an X-direction guide device; and a Y-direction moving member supported on the X-direction moving member by a Y-direction guide device. The X-direction guide device has an X-direction elongated hole extending in the X-direction and formed in one of the X-direction moving member and the stationary support plate, and an X-direction engagement projection provided on the other of the X-direction moving member and the stationary support plate and is engaged in the X-direction elongated hole. The Y-direction guide device has a Y-direction elongated hole extending in the Y-direction and formed in one of the X-direction and Y-direction moving members, and a Y-direction engagement projection which is provided on the other of the X-direction and Y-direction moving members and is engaged in the Y-direction elongated hole.

Claims

1. A stage apparatus comprising:

a stationary support plate;

an X-direction moving member which is supported on the stationary support plate by an X-direction guide device so as to be move only in a specific X-direction; and

a Y-direction moving member which is supported on the X-direction moving member by a Y-direction guide device so as to be movable only in a Y-direction perpendicular to the X-direction and parallel with the support plate,

wherein said X-direction guide device is provided with an X-direction elongated hole which extends in the X-direction and which is formed in one of said X-direction moving member and said stationary support plate, and an X-direction engagement projection which is provided on the other of said X-direction moving member and said stationary support plate and is engaged in said X-direction elongated hole so as to be movable only in the X-direction, and wherein said Y-direction guide device is provided with a Y-direction elongated hole which extends in the Y-direction and which is formed in one of said X-direction moving member and said Y-direction moving member, and a Y-direction engagement projection which is provided on the other of said X-direction moving member said Y-direction moving member and is engaged in said Y-direction elongated hole so as to be movable only in the Y-direction.

2. The stage apparatus according to claim 1, wherein a plurality of said X-direction elongated holes and a plurality of said X-direction engagement projections are aligned along a straight line parallel with said X-direction, so that said X-direction engagement projections are respectively engaged in corresponding said X-direction elongated holes.

3. The stage apparatus according to claim 1, wherein a plurality of said Y-direction elongated holes and a plurality of said Y-direction engagement projections are aligned along a straight line parallel with the Y-direction, so that said Y-direction engagement projections are respectively engaged in corresponding said Y-direction elongated holes.

4. The stage apparatus according to claim 1, further comprising an X-direction actuator which moves said Y-direction moving member in said X-direction relative to said stationary support plate, and a Y-direction actuator which moves said Y-direction moving member in said Y-direction.

5. The stage apparatus according to claim 1, further comprising an X-direction actuator which moves said X-direction moving member in said X-direction relative to said stationary support plate, and a Y-direction actuator which moves said Y-direction moving member in said Y-direction relative to said X-direction moving member.

6. The camera shake correction apparatus using a stage apparatus according to claim 5, comprising:

a camera including said stage apparatus;

an image pickup device secured to a front surface of said Y-direction moving member and having an image pickup surface positioned at an image forming surface of an optical system of said camera;

a shake detection sensor which detects a camera shake; and

a control device for driving said X-direction actuator and said Y-direction actuator, based on shake information detected by said shake detection sensor, so as to correct the camera shake.

7. The camera shake correction apparatus using a stage apparatus according to claim 5, comprising:

a camera including said stage apparatus;

a correction lens secured to said Y-direction moving member in front of a focal plane of an optical system of said camera, said correction lens provided perpendicular to an optical axis of said optical system;

a shake detection sensor which detects a camera shake; and

a control device for driving said X-direction actuator and said Y-direction actuator, based on shake information detected by said shake detection sensor, so as to correct the camera shake.