| 摘要 |
An optical apparatus includes a movable lens unit, a rotatable lead screw moving the movable lens unit, and a motor driving the rotatable lead screw. In the optical apparatus, the center of the motor and the center of the lead screw are disposed so as to be approximately aligned on the same circumference of a circle that is centered on an optical axis of a lens in the movable lens unit. In another aspect of the invention, a holding member positions both the lead screw and the motor, so as to dispose the lead screw and the motor in a direction parallel to an optical axis of the movable lens unit.
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