Image apparatus and drive motor

Details Image apparatus and drive motor Image apparatus and drive motor

2006-05-30

2006-05-30

Nguyen, Tran (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S0400MM, C310S049030, C310S216006, C310S254100, C396S449000, C396S463000, C396S471000, C396S508000, C359S696000

Reexamination Certificate

active

07053514

ABSTRACT:
A drive motor is proposed, which serves as a drive source for a movement mechanism constituting an iris for an optical path of an imaging system. The drive motor has a shaft serving as a center of rotation, a magnet, two-pole magnetized and rotated around the shaft, a turning arm engaged with movable members and turned integrally with the magnet, for moving the movable members in a direction associated with a turning direction, a stator coil wound in a direction perpendicular to a direction of rotation of the magnet and disposed in such a way to enclose the magnet from outside, a coil bobbin on which the stator coil is wound, a stator yoke disposed outside the coil bobbin and having a cylindrical circumferential surface part penetrated in an axial direction of the shaft, and position detection means for detecting a rotational position of the magnet.

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