Lens driving device, auto-focusing camera, and mobile terminal device with camera

Abstract

The invention provides a simple-structured lens driving device, an auto-focusing camera, and a mobile terminal device with a camera capable of moving the lens support body towards the optical axis direction and correcting the shaking by the moving. A first coil 19 is winded on the outer periphery of the lens support body 5, the plane of the first coil is in the shape of four corners, viewed from the optical axis side. The second coils 16a -16d are disposed on the outer periphery at the interval of 90degrees. When the first coil forms the four-corner shape, viewed from the radial direction of the lens support body 5, the second coils are in the annular shape. A first magnet 17 is disposed oppositely to each side of the first coil 19, and the inner peripheral plane can be configured to have the same pole, at the same time, the first coil is opposite to the positions of the second coils 16a-16d. When the lens support body moves towards the optical shaft, the first coil 19 is powered on, when towards the X-Y direction, the second coils 16a-16b are provided with a certain quantity of current.

Description

technical field [0001] The present invention relates to a lens driving device, an auto-focus camera, and a mobile terminal device with a camera. Background technique [0002] Patent Document 1 (patent published in JP2002-373435 publication) discloses an actuator related to daylighting, in which annular coils are arranged at intervals of 90 degrees in the circumferential direction of the outer peripheral surface of the lens support. Magnets facing the coils are disposed on the outside of the lens support in the radial direction, and the lens support is moved in the optical axis direction (focus direction) and travel direction (X direction) by energizing the coils. [0003] On the other hand, in a compact camera, the lens support moves only in the direction of the optical axis, and when it is moved in the X-Y direction in order to correct shake, the whole lens driving device is driven by a motor driven in the X direction and a motor driven in the Y direction. move. [0004] ...

AI Technical Summary

Problems solved by technology

[0005] In addition, even though the movement in the direction of the optical axis of the lens support can be realized using the technology of Patent Document 1, the technology of Patent Document 1 can only provide movement in the X direction and shake correction (X-Y direction, that is, the movement of the plane perpendicular to the optical axis) can not be achieved

Images