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Lens driving device and imaging device using the same

A lens driving device and driving source technology, applied in installation, optics, instruments, etc., can solve the problems of insufficient shortening of length and inability to achieve miniaturization, and achieve the effect of realizing miniaturization and reducing space

Inactive Publication Date: 2008-03-26
TAMRON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in this lens driving device, the length in the direction parallel to the optical axis cannot be sufficiently shortened.
Therefore, any existing lens driving device cannot realize miniaturization

Method used

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  • Lens driving device and imaging device using the same
  • Lens driving device and imaging device using the same
  • Lens driving device and imaging device using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0058] Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic diagram showing the appearance of a mobile phone 101 according to an embodiment of the present invention. The mobile phone 101 is a mobile phone with a camera function. Furthermore, the mobile phone 101 has a camera unit 102 having a box-shaped housing 110, a lens unit and a camera element (CCD) disposed in the housing 110. In addition, the camera module 102 is configured to image reflected light of an object through an imaging element according to a user's operation, convert it into an electrical signal, and output the electrical signal to an A / D converter or the like.

[0059] FIG. 2 is a perspective view of the lens unit 1 . The lens unit 1 has a first guide rod 2 , a second guide rod 3 , a first lens group holding member 4 , a second lens group holding member 5 , and a lens driving device 6 .

[0060] The guide rods 2 and 3 are guide members for guid...

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Abstract

There is provided a lens driving device which can be miniaturized and an imaging device using the same. In the lens driving device of a cellular phone, a first lead screw and three gears forming a first driving mechanism are arranged along the optical-axis orthogonal reference-plane. A second lead screw and three gears forming a second driving mechanism are arranged along the optical-axis orthogonal reference-plane. A first motor is arranged along the optical-axis orthogonal reference-plane on one side of the first driving mechanism. A second motor is arranged along the optical-axis orthogonal reference-plane on one side of the second driving mechanism and opposes to the first motor with the optical-axis orthogonal reference-line interposed therebetween.

Description

technical field [0001] The present invention relates to a compact and light-weight lens driving device, and more particularly, to a lens driving device independently driving two lens groups and an imaging device using the lens driving device. Background technique [0002] Conventionally, for zoom optical systems of digital cameras and the like, a method of moving two lens groups (first lens group and second lens group) along the optical axis direction has been often used. The two lens groups are respectively held by the first lens group holding frame and the second lens group holding frame. In addition, the first lens group holding frame and the second lens group holding frame are configured to be movable along the optical axis by a guide member provided on the frame body. [0003] In addition, a driving device is used to independently drive the first lens group holding frame and the second lens group holding frame. Specifically, the lens driving device is composed of a fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B7/04
CPCG02B7/102
Inventor 角田良夫
Owner TAMRON
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