Lens driving device, automatic focusing camera and mobile terminal device

Abstract

The present invention provides a lens driving device, an automatic focusing camera and a mobile terminal device, wherein optical axis, pickup current and displacement value can be adjusted and the yield rate can be increased after the lens driving device is assembled. According to power-on current of an annular coil (15) wound on a lens supporting body (5), and the electromagnetic force acted on the annular coil (15) by a magnetic filed of a magnet (13), the lens supporting body (5) will be moved toward the optical axis direction of the lens. The lens supporting body (5) is characterized in that an annular opening (3) is provided with a radial extending wall (3c) extending from the peripheral side wall (3a) to the radius inner side, the magnet (13) is fixed on the inner circumference side surface of the peripheral side wall (3a), and holes (21) for adjusting the magnet are formed on various positions corresponding with the magnet (13). After the lens driving device (1) is assembled, jigs (36) are inserted into the magnet adjusting holes (21) to be contacted with the magnet (13), thus the position of the magnet (13) can be adjusted through magnet displacement.

Description

technical field [0001] The invention relates to a lens driving device, an automatic focus camera and a mobile terminal device with a camera function. Background technique [0002] In Patent Document 1 (Patent Publication No. JP2009-210897), it is disclosed that: on the inner peripheral side of the annular ring mouth, the lens support body is arranged to move freely, and the loop coil coiled around the periphery of the lens support body is energized. , the lens support moves toward the optical axis according to the electromagnetic force generated by the loop coil. [0003] In the lens driving device described in Patent Document 1, the ring opening has an annular outer peripheral wall and a radially extending wall extending radially inward from the outer peripheral side wall. A magnet is arranged on the inner peripheral side of the outer peripheral side wall of the ring mouth. [0004] On the one hand, although there is no description in Patent Document 1, in general, in the...

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