Two-axial rotational driving apparatus and driven member rotation control system
AssigneeCanon Kabushiki Kaisha
InventorsTakuji Okamoto, Senzo Katagiri
Life of this patent
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Abstract
A two-axial rotational driving apparatus is disclosed which achieves a small size and rotational driving with a well-balanced arrangement and higher accuracy. The two-axial rotational driving apparatus comprises a first actuator which rotationally drives a support member on which a driven member is mounted around a first axis through a first rotation member, a second actuator which rotationally drives a second rotation member, a converting mechanism which converts rotation of the second rotation member into rotation around a second axis to rotate the support member around the second axis.
Claims10
A two-axial rotational driving apparatus comprising:
- a first rotation member and a second rotation member which are rotatable independently of each other around a first axis;
- a support member on which a driven member is mounted;
- a first actuator which rotationally drives the first rotation member to rotate the support member around the first axis;
- a second actuator which rotationally drives the second rotation member;
- a converting mechanism which converts rotation of the second rotation member into rotation around a second axis extending in a direction different from the first axis to rotate the support member around the second axis;
- a first detector which is fixed to the first rotation member and detects a driving amount of the first actuator;
- and
- a second detector which is fixed to the second rotation member and detects a driving amount of the second actuator,
- wherein the first and second detectors, the first and second actuators and a coupling portion of the support member to the first rotation member are arranged on the first axis, and
- wherein the first and second actuators are arranged on both sides of the second axis and provided between the first and second detectors and the coupling portion of the support member.
Dependencies are inferred from the claim text.