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Magnetic device and lens drive device

A technology of lens driving device and magnetic device, which is applied in the directions of installation, electromagnet, movable winding electromagnet, etc., can solve the problems of unsatisfactory, increase in outer diameter, etc., so as to increase the number of winding layers and realize miniaturization. Effect

Active Publication Date: 2013-01-16
SANKYO SEIKI MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Not only does the connecting wire not help at all in generating thrust, but it also increases the outer diameter size, so it is not ideal

Method used

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  • Magnetic device and lens drive device
  • Magnetic device and lens drive device
  • Magnetic device and lens drive device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0048] Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings. The lens driving device described below can be mounted on various electronic devices in addition to a mobile phone with a camera. For example, it can be used in thin digital cameras, PHS, PDA, barcode readers, surveillance cameras, cameras for checking the back of cars, doors with optical authentication functions, and the like.

[0049] (Overall structure of lens driving device)

[0050] figure 1 (a) and (b) are an external view and an exploded perspective view of the lens driving device to which the present invention is applied, viewed obliquely from above, respectively. figure 2 is to apply the lens driving device of the present invention to figure 1 An exploded perspective view of the state shown in (b) in more detail. image 3 It is an explanatory diagram schematically showing the operation to which the present invention is applied. image 3 , th...

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PUM

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Abstract

A magnetic device may include a coil wound body having a first coil winding face and a second coil winding face in an axial direction, a coil wound around the first coil winding face and the second coil winding face, and a coil winding start part and a coil winding end part arranged on an opposite side to the second coil winding face with respect to the first coil winding face. The coil is wound around the first coil winding face by an odd number of layer(s) from the winding start part and then the coil is wound around the second coil winding face by an even number of layers in a reverse direction to the first coil winding face, and then the coil is wound around the first coil winding face by an odd number of layer(s) in a reverse direction to the second coil winding face. The magnetic device may be used in a lens drive device in which the coil wound body is a movable body having a lens.

Description

technical field [0001] The present invention relates to a magnetic device and a lens driving device using the magnetic device as a driving mechanism. The coil wound body of the coil. Background technique [0002] The lens driving device mounted on a mobile phone with a camera, a digital camera, etc. has: a support body, a moving body including a lens, a drive mechanism for magnetically driving the moving body in the direction of the optical axis of the lens, and a The spring component between the body and the moving body, and the thrust of the driving mechanism and the force of the spring component drive the moving body in the direction of the optical axis. Here, the drive mechanism is configured as a magnetic drive mechanism (magnetic device) including a coil wound on the moving body side and a magnet held on the support body side. [0003] For the magnetic drive mechanism thus constituted, a structure has been proposed in which a first coil winding surface and a second c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F7/20G02B7/08
CPCG02B7/08H01F5/00H01F7/066
Inventor 樋口大辅
Owner SANKYO SEIKI MFG CO LTD