| 摘要 |
In an image pickup apparatus for automatically chasing a moving object, an image pickup optical lens system and an image pickup device are contained in a ball shaped unit. A convex spherical surface of the unit is spherically pivoted by a concave spherical surface of an inner space of a housing via ball bearings. A driving mechanism, which alternatively includes two sets of one dimensional piezoelectric actuator and friction member or one set of two-dimensional piezoelectric actuator and a friction member, moves the friction member(s) for trailing an elliptical orbits in two ways. The unit is revolved around an optional axis passing the center of a sphere constituting the convex spherical surface.
|
