Optical: systems and elements – Lens – With support
Patent
1998-06-06
2000-06-20
Mack, Ricky
Optical: systems and elements
Lens
With support
G02B 702
Patent
active
060784407
ABSTRACT:
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.
REFERENCES:
patent: 5050157 (1991-09-01), Miura et al.
"Seimitsu Kogaku Kaisha"; Precision Engineering Periodical; vol. 62; No. 4; pp. 599-603; 1996 (and English translation thereof).
Keisuke SASAE et al, "Development of a Small Actuator with Three Degrees of Rotational Freedom (3rd Report)--Design and Experiment of a Spherical Actuator", Seimitsu Kogaku Kaishi (Precision Engineering Periodical), vol. 62, No. 4, 1996, pp. 599-603.
Mack Ricky
Minolta Co. , Ltd.
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