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US 2006/0066282 A1Published application
Motor apparatus and optical scanning apparatus, each with feedback control of drive load
AssigneeCanon Kabushiki Kaisha
InventorYasuhiro Soeda
Life of this patent
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Abstract
A motor apparatus has a motor which is rotatable by electromagnetic force, a load mounted to an output shaft of the motor, and an angular detecting unit for detecting a rotational angle of the output shaft of the motor or the load. In the motor apparatus, the angular detecting unit has a magnetic sensor and a magnet, and one of the magnetic sensor and the magnet is fixed to the output shaft of the motor or to the rotational axis portion of the load on a side opposite to a side of the motor with the load interposed therebetween.
Claims5
A motor apparatus comprising:
- a motor with an output shaft, the motor being rotatable by electromagnetic force;
- a load with a rotational axis portion, the load being mounted to the output shaft of the motor;
- and
- angular detecting means for detecting a rotational angle of the output shaft or the load,
- wherein the angular detecting means includes a magnetic sensor and a magnet, and one of the magnetic sensor and the magnet is fixed to the output shaft or to the rotational axis portion of the load on a side opposite to a side of the motor with the load interposed therebetween.
2 more elements
An optical scanning apparatus comprising:
- a motor with an output shaft, the motor being rotatable by electromagnetic force;
- an optical reflective mirror with a rotational axis portion, the optical reflective mirror being mounted to the output shaft of the motor;
- and
- angular detecting means for detecting a rotational angle of the output shaft or the optical reflective mirror,
- wherein the angular detecting means includes a magnetic sensor and a magnet, and one of the magnetic sensor and the magnet is fixed to the output shaft or to the rotational axis portion of the optical reflective mirror on a side opposite to a side of the motor with the optical reflective mirror interposed therebetween,
- wherein light from a light source is scanned by the optical reflective mirror.
3 more elements
Dependencies are inferred from the claim text.