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Lens driving device

A lens driving device, lens body technology, applied in electromechanical devices, installation, optics, etc., can solve problems such as deformation of leaf springs, and achieve the effect of preventing deformation

Active Publication Date: 2010-09-22
ALPS ALPINE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the above-mentioned lens driving device, a dedicated jig for restricting the rotation of the lens holder relative to the housing is required.
In addition, after the lens body is assembled on the lens holder, since the lens holder is supported on the frame only by the ring-shaped spring member, when an impact is applied to the device due to dropping or the like, Risk of leaf spring deformation

Method used

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Examples

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Embodiment Construction

[0064] An embodiment of the present invention will be specifically described below with reference to the drawings. figure 1 It is an exploded perspective view of a lens driving device according to an embodiment of the present invention. Such as figure 1 As shown, the lens driving device 1 of this embodiment includes: a base member 2 constituting the bottom portion of the device; a lens holder 3 as a lens holder for holding a lens body not shown in the figure; The magnets 4a-4d, the coil 5, and the yoke 6 of the movement mechanism for moving the lens holder 3; the plate springs ( Bottom-side leaf spring 7, top-side leaf spring 8); cover member 10 that fixes top-side leaf spring 8 to yoke 6 with adjustment plate 9 interposed therebetween.

[0065] The base member 2 is formed of, for example, an insulating resin material, and is provided in a rectangular shape. As will be described later about the specific structure, the metal plate 11 described later is insert-molded on the b...

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PUM

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Abstract

The present invention provides a lens driving device which does not require a special clamp and can prevent the deformation of a spring component that supports a lens holding member after assembling. The lens driving device of the invention is characterized by comprising the following components: a lens holding member (3) which holds the lens body and is provided with projections (33a-33d) that project from the outer periphery outside; a bottom spring component (7) and a top spring component (8) which are equipped on the frame body of the device body and support the lens holding member (3); and a rotation limiting mechanism which is provided on the frame and is jointed with the projections (33a-33d) for limiting the rotation of the lens holding member (3).

Description

technical field [0001] The present invention relates to a lens driving device, and more particularly, the present invention relates to a lens driving device suitable for an autofocus mechanism of a digital camera or the like. Background technique [0002] It has been known in the past that in the lens drive device used in the autofocus mechanism of a digital camera, etc., when the lens body is assembled on the lens holder, the annular spring member that prevents the lens holder from being connected to the frame The deformation of (for example, refer to Patent Document 1). In this lens driving device, after the lens body and the spring member are assembled on the frame, the pin of the jig is fitted into the insertion part provided on the lens support body and the spring member, and the lens support body is restricted relative to the frame body. In this state, assemble the lens body to the lens holder. [0003] Patent Document 1: JP Unexamined Publication No. 2006-284652 ...

Claims

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Application Information

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IPC IPC(8): G02B7/04H02K33/18
Inventor 石黑克之藤谷宜宪
Owner ALPS ALPINE CO LTD