Patent ID: 8964316
Filing Date: 2015-02-24
Classification: G02B,G03B,H02K

Abstract:
1. A lens driver which moves at least one lens in an optical axis direction relative to a supporter, comprising: a holder provided in the supporter relative to hold the lens to be movable in the optical axis direction; a driver configured to apply to the holder a driving force in the optical axis direction relative to the supporter; and a position detector configured to detect a position of the holder in the optical axis direction relative to the supporter, the magnetic circuit is provided such that the magnetic pole surface is parallel to a plane including the optical axis direction and the straight line direction of the electric path, and a pair of side end portions of the magnetic pole surface as seen in its width direction is inclined to the optical axis direction, the position detector includes a magnetism-detecting element provided in the one of the holder and the supporter, and the magnetism-detecting element is provided to face one of the side end portions of the magnetic pole surface as seen in the direction of the magnetic field formed by the magnetic circuit.