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lens driver

A technology for a lens driving device and a lens body, which is applied to projection devices, printing devices, televisions, etc., can solve the problems of weakening the function of correcting hand shake, and difficulty in miniaturizing the lens driving device.

Active Publication Date: 2016-09-28
ALPS ALPINE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the case of thinning the permanent magnet, the function of correcting hand shake by the hand shake correction device is weakened
Therefore, there is a problem that there is a limit to the reduction in thickness of the permanent magnet, and it is difficult to reduce the size of the lens driving device in the direction perpendicular to the optical axis direction.

Method used

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Embodiment Construction

[0090] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. figure 1 It is an exploded perspective view of the lens driving device according to the embodiment of the present invention. Such as figure 1 As shown, the lens driving device 1 includes the following parts: an autofocus actuator 2 for autofocus function, which adjusts the focus of the camera; The device 2 is slightly moved in response to hand shake to keep the photographing optical axis fixed. In the lens driving device 1 , an autofocus actuator 2 as a first holder and a suspension mechanism unit 3 as a second holder are accommodated in an outer case 4 .

[0091] The actuator 2 for autofocus includes: a lens holder 21 holding an unillustrated lens body; a first coil 22, a magnet 23, an inner yoke 24, and an outer side yoke 24 constituting a movement mechanism for moving the lens holder 21 along the optical axis direction; The yoke 25 and the leaf spring hold...

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Abstract

PROBLEM TO BE SOLVED: To provide a lens driving device capable of miniaturizing a device main body in a direction which is orthogonal to an optical axis direction while securing sufficient camera shake correction effects.SOLUTION: A lens driving device (1) includes: a first holding body (2) having a lens holder (21) capable of holding a lens body, an annular first coil (22) disposed around the lens holder (21) and a magnet (23); and a second holding body (3) for holding the first holding body (2) freely movably in a first direction (X-axial direction) and a second direction (Y-axial direction) which are orthogonal to an optical axis direction, and orthogonal to each other. The first coil (22) and a second coil (312) disposed in the second holding body (3) are oppositely disposed in a state that they are separated from each other in the optical axis direction via the magnet (23).

Description

technical field [0001] The present invention relates to a lens driving device, and more particularly, to a lens driving device suitable for correcting camera shake mounted in a relatively small camera such as a mobile phone. Background technique [0002] In recent years, lens driving devices installed in camera-equipped mobile phones and the like have demanded not only an autofocus function but also a hand-shake correction function in response to demands for higher performance and higher functionality of cameras. As a lens driving device having a hand-shake correction function, for example, a structure in which hand-shake correction is corrected by a hand-shake correction device having a suspension wire (suspension wire) and a hand-shake correction coil, the suspension wire will have The focusing coil and the autofocus lens driving device of the permanent magnet arranged outside the focusing coil are supported in a swingable manner as a whole, and the hand shake correction c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B5/06H04N5/232
Inventor 木原孝长谷川和昭
Owner ALPS ALPINE CO LTD
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