Camera apparatus with movably supported lens barrel

• US 4,731,669 A
• Filed: 06/05/1986
• Issued: 03/15/1988
• Est. Priority Date: 06/18/1985
• Status: Expired due to Term

• Current Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Hayashi, Takayuki, Kajino, Jirou
• Primary Examiner(s): Ng, Jin F.
• Assistant Examiner(s): Brinich, Stephen
• Application Number:
  US06/870,963
• Time in Patent Office: 649 Days
• Field of Search: 358/229, 358/909, 354/288 R, 352/242, 352/243
• US Class Current: 348/208.7
• CPC Class Codes: G03B 2205/0007 Movement of one or more optical elements for control of motion blur imaging systems in general using optical elements for stabilisation of the position of the image G02B27/64
• CPC Class Codes: G03B 2205/0069 using electromagnetic actuators, e.g. voice coils
• 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 23/6815 by distinguishing pan or tilt from motion
• CPC Class Codes: H04N 23/687 by shifting the lens or sensor position

Abstract

A camera apparatus having a image fluctuation suppressing function has a fixed body and a lens barrel. The lens barrel is supported rotatably in at least one of panning and tilting directions by a supporting frame. The lens barrel is rotated by a panning or tilting actuator for suppressing an image fluctuation due to a fluctuation of the fixed body. The apparatus has a lock mechanism for locking the lens barrel so as not to rotate. The apparatus preferably has a mechanism for compensating for a movement of center of gravity of the lens barrel due to focusing or zooming operation.

Claims

1. A camera apparatus comprising:

a lens system for receiving the optical image of an object;

a photoelectric conversion means for converting the optical image of said object which has passed through said lens system into electric signals;

holding means for holding said lens system and said photoelectric conversion means;

a cabinet for encasing therein said holding means, a front part of said holding means being exposed out of said cabinet so that said lens system can receive the optical image of the object;

supporting means encased in said cabinet for rotatably supporting said holding means in at least one of panning and tilting directions with respect to said cabinet;

drive means for driving said holding means to move said holding means in at least one of said panning and tilting directions;

control means for controlling said drive means; and

lock means operable independently of said drive means for locking said holding means so as to prevent movement of said holding means relative to said cabinet.

2. The apparatus according to claim 1, further comprising lock drive means for driving said lock means for locking and unlocking, and lock control means for controlling said lock drive means.

3. The apparatus according to claim 2, wherein said lock control means includes a power failure detecting means for controlling said lock drive means to drive said lock means so as to lock said holding means when said power failure detecting means detects a power failure.

4. The apparatus according to claim 2, wherein said lock control means includes an operation switch for changing a mode of a recording apparatus connected with said camera apparatus into a recording mode or a pause mode, and for controlling said lock drive means to drive said lock means so as to lock said holding means when said operation switch changes said mode of said recording apparatus into said pause mode.

5. The apparatus according to claim 2, further comprising lock detecting means for detecting when said holding means is locked, and wherein said lock control means is responsive to a lock detection signal from said lock detecting means for stopping power supply to said lock drive means.

6. The apparatus according to claim 2, further comprising lock detecting means for detecting when said holding means is locked, wherein said control means for controlling said drive means for driving said holding means is responsive to a lock detection signal from said lock detecting means for stopping power supply to said drive means so that said drive means does not drive said holding means.

7. The apparatus according to claim 1, wherein said supporting means supports said holding means generally at the center of gravity of said holding means.

8. The apparatus according to claim 1, further comprising means for compensating for movement of the center of gravity of said holding means when a lens in said lens system is moved along an optical axis.

9. The apparatus according to claim 8, wherein said compensating means comprises a weight, and guide means for guiding said weight to move in a direction for compensating for the movement of said center of gravity due to the movement of said lens.

10. The apparatus according to claim 8, wherein said compensating means comprises a first weight movable in a direction opposite to the moving direction of a focus lens in said lens system, a second weight movable in a direction opposite to the moving direction of a zoom lens in said lens system, and guide means for guiding said first and second weights so as to compensate for the movement of said center of gravity.

11. The apparatus according to claim 1, further comprising at least one of focusing means for moving a focus lens in said lens system and zooming means for moving a zoom lens in said lens system, said at least one of focusing means and zooming means being exposed out of said cabinet.

12. The apparatus according to claim 1, wherein said holding means has a projecting member having a spherical surface and said cabinet has a complementary spherical surface provided opposite said spherical surface and defining a gap between said holding means and said cabinet which is invisible from the outside of said cabinet.

13. The apparatus according to claim 1, further comprising a cover for covering the exposed part of said holding means.

14. The apparatus according to claim 1, further comprising detecting means for detecting a movement of said holding means due to a positional deviation of said cabinet, and wherein said control means is responsive to a detection signal from said detecting means for controlling said drive means for driving said drive means for driving said holding means to move in a direction opposite to said movement due to said positional deviation of said cabinet, whereby image fluctuation of said optical image due to said deviation of said cabinet is suppressed.