| 摘要 |
A camera shake correcting apparatus comprises a variable angular prism (7), a microcomputer (20) serving as a means for driving the variable angular prism (7), actuators (6) and (15), vertical angle sensors (8) and (16), angular velocity sensors (1) and (10) for detecting an angular velocity caused by a camera shake, and damping coils (26) and (32). The variable angular prism (7) is driven by a signal which results from subtracting detected results of the vertical angle sensors (8), (16) and the angular velocity sensors (1), (10) from detected results of the angular velocity sensors (1), (10). The position signal from the vertical angle sensor is subtracted from the detected signal obtained from the angular velocity sensor when camera shake occurs. The prism is driven by a signal which results from subtracting rotational angular velocity signals detected by a damping coil from the subtracted result. Therefore, a nonlinearity of the prism can be alleviated, i.e., the prism can be driven smoothly. Also, the phase margin of the servo characteristic can be increased. Thus, the camera shake correcting apparatus can be made resistant to the fluctuation of elements in its mass-production and a dependency of temperature characteristics. <IMAGE> |
