Fitzpatrick, Cella, Harper & Scinto
Bearing device and deflecting-scanning apparatus using the same
A bearing device is structured to include a stator portion which includes one of a shaft and a sleeve, a rotor portion which includes the other of the shaft and the sleeve which are structured to be capable of relative rotation therebetween, a first permanent magnet mounted on the rotor portion, and a second permanent magnet mounted at a position opposed to the first permanent magnet. The rotor portion is floated up relative to the stator portion by a magnetic force working between the first permanent magnet and the second permanent magnet. The first permanent magnet is mounted on the upper end portion of the rotor portion, the second permanent magnet is mounted on the upper end portion of the stator portion, and the first permanent magnet and the second permanent magnet are provided in opposed relationship with each other in a circumferential direction perpendicular to an axial direction of the bearing device.
Canon Kabushiki Kaisha
G
G02B
inventional
Yasuo Mikio Isshin Akihiro Hideyuki Taku
Suzuki Nakasugi Sato Fukutomi Miyamoto Fukita