Lens driving device, automatic focusing camera and mobile terminal device

Abstract

The present invention provides a lens driving device, an autofocus camera and a mobile terminal device. In a simple structure, the movement of the lens carrier in the direction of the optical axis and the anti-shake correction movement are feasible. Among them, the first magnet 17 is on the inner circumference of the ring mouth 3 Several places in the circumferential direction of the side are arranged at equal intervals and are provided opposite the first loop coil 19 . The second magnet 18 is provided between the first magnets 17 and 17 and is arranged inside each ring of the second loop coils 16a to 16d. When the lens carrier 5 moves in the optical axis direction, current will be passed to the first loop coil 19. When moving in the X-Y direction, a designated current flows through the designated second loop coils 16a to 16d. The outer peripheral wall 3 a of the ring mouth 3 has a planar polygonal shape when viewed from the front side in the optical axis direction, and the second magnet 18 and the second annular coils 16 a to 16 d are arranged at the corner portion 3 b of the ring mouth 3 .

Description

technical field [0001] The present invention relates to a lens driving device, an autofocus camera, and a mobile terminal device with a camera function. Background technique [0002] Patent Document 1 (Japanese Patent Laid-Open No. 2002-373435 ), in a driving device for capturing light, discloses a first annular coil and a second annular coil arranged at 90-degree intervals in the circumferential direction of the outer peripheral surface of the lens carrier. 2 toroidal coils, and a magnet opposite to each annular coil is arranged on the radial outer side of the lens carrier, and the lens carrier is moved to the optical axis direction (focusing direction) and the track direction (X direction) after energizing the annular coil. . [0003] On the other hand, in a small camera, the lens carrier is only moved in the direction of the optical axis. If the lens carrier is moved in the X-Y direction in order to prevent shaking, it is necessary to drive the entire lens driving device...

AI Technical Summary

Problems solved by technology

[0004] To put it simply, in the lens driving device for small cameras, the movement to the optical axis direction (Z direction) of the lens carrier and the movement to the X-Y direction (anti-shake correction) only need to move the lens carrier. Such a function has not yet been provided.

[0005] In addition, the movement in the direction of the optical axis of the lens carrier can be achieved by using the technology of Patent Document 1, but in the technology of Patent Document 1, it is only possible to move in the X direction, to the anti-shake correction (X-Y direction) optical axis intersecting surface cannot move

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