Image stabilizing device in a camera

• US 5,153,633 A
• Filed: 08/28/1991
• Issued: 10/06/1992
• Est. Priority Date: 08/31/1990
• Status: Expired due to Term

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Otani, Tadasu
• Primary Examiner(s): Adams, Russell E.
• Assistant Examiner(s): NOH, JAE
• Application Number:
  US07/751,294
• Time in Patent Office: 405 Days
• Field of Search: 354/70, 354/430, 358/229
• US Class Current: 396/55
• 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: G03B 2205/0015 by displacing one or more optical elements normal to the optical axis
• CPC Class Codes: G03B 2205/0069 using electromagnetic actuators, e.g. voice coils
• CPC Class Codes: G03B 2217/005 Blur detection
• CPC Class Codes: G03B 5/00 Adjustment of optical system relative to image or object surface other than for focusing
• CPC Class Codes: G03B 7/0807 Control circuits G03B7/10 takes precedence
• CPC Class Codes: G03B 7/081 Analogue circuits
• CPC Class Codes: H04N 23/68 for stable pick-up of the scene, e.g. compensating for camera body vibrations
• CPC Class Codes: H04N 23/6812 based on additional sensors, e.g. acceleration sensors
• CPC Class Codes: H04N 23/687 by shifting the lens or sensor position

Abstract

An image stabilizing device in a camera has image stabilizing means for preventing the image vibration of the camera, lock means for locking the image stabilizing means in a predetermined state, and control means responsive to the operation of a shutter release member to operate or release the lock means.

Claims

1. An image stabilizing device in a camera including:

(A) image stabilizing means for preventing the image blur of the camera;

(B) lock means for locking said image stabilizing means in a predetermined state; and

(C) control means responsive to the operation of a shutter release member to operate or release said lock means.

2. An image stabilizing device according to claim 1, wherein said image stabilizing means includes an optical system displaceable to prevent the image vibration.

3. An image stabilizing device according to claim 2, wherein said lock means includes means for locking said optical system in a predetermined position.

4. An image stabilizing device according to claim 3, wherein said lock means includes means for mechanically locking said optical system.

5. An image stabilizing device according to claim 1, wherein said lock means includes means for mechanically locking said image stabilizing means.

6. An image stabilizing device according to claim 5, wherein said control means includes means for electrically effecting the control of said lock means.

7. An image stabilizing device according to claim 5, wherein said control means includes means for electrically starting the operation or release of said lock means.

8. An image stabilizing device according to claim 1, wherein said control means includes means responsive to the photographing preparation operation of said shutter release member to release said lock means.

9. An image stabilizing device according to claim 1, wherein said control means includes means responsive to the first stroke of the depression of said shutter release member to release said lock means.

10. An image stabilizing device according to claim 1, wherein said control means includes means responsive to the photographing starting operation of said shutter release member to operate said lock means.

11. An image stabilizing device according to claim 1, wherein said control means includes means responsive to the second stroke of the depression of said shutter release member to operate said lock means.

12. An image stabilizing device according to claim 3, wherein said control means includes biasing means for biasing said optical system to said predetermined position before said lock means is operated or released.

13. An image stabilizing device according to claim 12, wherein said biasing means includes means for electrically acting.

14. An image stabilizing device according to claim 12, wherein said predetermined position includes the substantial movable center of said optical system.

15. An image stabilizing device according to claim 3, wherein said predetermined position includes the substantial movable center of said optical system.

16. A camera provided with an image stabilizing device, including:

(A) image stabilizing means for preventing the image blur of the camera;

(B) lock means for locking said image stabilizing means in a predetermined state; and

(C) control means responsive to the operation of a shutter release member to operate or release said lock means.

17. A camera according to claim 16, wherein said image stabilizing means includes an optical system displaceable to prevent the image vibration.

18. A camera according to claim 17, wherein said lock means includes means for locking said optical system in a predetermined position.

19. A camera according to claim 18, wherein said lock means includes means for mechanically looking said optical system.

20. A camera according to claim 16, wherein said lock means includes means for mechanically locking said image stabilizing means.

21. A camera according to claim 20, wherein said control means includes means for electrically effecting the control of said lock means.

22. A camera according to claim 20, wherein said control means includes means for electrically starting the operation or release of said lock means.

23. A camera according to claim 16, wherein said control means includes means responsive to the photographing preparation operation of said shutter release member to release said lock means.

24. A camera according to claim 16, wherein said control means includes means responsive to the first stroke of the depression of said shutter release member to release said lock means.

25. A camera according to claim 16, wherein said control means includes means responsive to the photographing starting operation of said shutter release member to operate said lock means.

26. A camera according to claim 16, wherein said control means includes means responsive to the second stroke of the depression of said shutter release member to operate said lock means.

27. A camera according to claim 18, wherein said control means includes biasing means for biasing said optical system to said predetermined position before said lock means is operated or released.

28. A camera according to claim 27, wherein said biasing means includes means for electrically acting.

29. A camera according to claim 27, wherein said predetermined position includes the substantial movable center of said optical system.

30. A camera according to claim 18, wherein said predetermined position includes the substantial movable center of said optical system.