| 摘要 |
A control device for optical apparatus, particularly an image stabilizer for a hand-held camera, comprises a control mechanism such as a gyroscope rotor or inertial mass mechanically coupled to a mirror which receives light from a scene viewed and reflects this light into a prism from which the light is further reflected to the apparatus. The gyroscope rotor or mass tends to maintain its position during vibration and tremor of the device and this relative movement is transmitted to the mirror to maintain steady the image seen by the apparatus. The material of the prism produces refractive effects which enable the mirror to be small enough to allow mechanical coupling thereof of the control mechanism, i.e. without servo-motors, while still accommodating the wide field of view normally accepted by a camera. The invention may also be applied to a device which steers the line of sight of the apparatus.
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