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Voice coil motor positioning apparatus

A technology of positioning device and voice coil motor, applied in installation, optics, instruments, etc., can solve the problems of restricting the development of miniaturization, large volume of imaging modules, and increased cost.

Inactive Publication Date: 2009-01-28
WAH HONG INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can effectively achieve the purpose of positioning, it requires the cooperation of several components to achieve it, resulting in the overall bulk of the imaging module being too large, which limits the development of miniaturization
In addition, when using this light-shielding positioning technology, the detection result is not a voltage signal, so it is necessary to add a conversion component to convert the detection result into a voltage signal, and the additional conversion component will also increase the cost

Method used

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  • Voice coil motor positioning apparatus
  • Voice coil motor positioning apparatus
  • Voice coil motor positioning apparatus

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Embodiment Construction

[0038] Please refer to figure 1 , figure 1 It is a schematic structural diagram of the voice coil motor positioning device according to the first embodiment of the present invention. The voice coil motor positioning device 1 of the present invention includes: a fixed part 10, a moving part 12 and a connecting part 14. Wherein, the moving part 12 is movably arranged on the fixed part 10. The moving part 12 has a lens assembly 120 and a coil assembly 122. The lens assembly 120 is provided with a lens (not shown) for capturing images, and the fixed The piece 10 includes a magnet assembly 102. The electromagnetic field generated by the conductive coil assembly 122 interacts with the magnetic field lines emitted by the magnet assembly 102 to generate an electromagnetic thrust to actuate the moving element 12.

[0039] Refer again figure 1 The coil assembly 122 is an air-core coil, and the magnet assembly 102 includes a first magnet 1022 and a magnetic conductive disk 1024. The first...

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Abstract

The invention provides a voice coil motor positioning device, comprising a fixed part, a movable part and a connecting part, wherein, the movable part is movably arranged on the fixed part; the connecting part is provided with a dielectric part; one end of the connecting part is connected with the fixed part and the other end thereof is connected with the movable part, wherein, the dielectric part can generate the deformation with the movement of the movable part, thus generating a movable part displacement signal further; by judging the movable part displacement signal generated when the dielectric part moves with the movement of the movable part, precise positioning of the voice coil motor can be realized.

Description

Technical field [0001] The invention relates to a voice coil motor positioning device, in particular to a voice coil motor positioning device which can be applied to the lens drive of a miniature imaging module. Background technique [0002] In recent years, it has become more and more common for handheld devices to be equipped with imaging modules. With the market demand for handheld devices with better performance and smaller size, imaging modules are facing the dual requirements of higher image quality and miniaturization. In view of the improvement of image quality, one aspect is to increase pixels. The market trend of handheld device image capturing modules has gradually increased from 300,000 pixels of VGA level to megapixels, 2 million, 3 million pixels, and even higher. The level of development of 4 million, 5 million pixels. In addition to the improvement of pixels, more attention has been paid to the clarity of image capture. Correspondingly, the image capture module of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B7/04G03B30/00
Inventor 郭利德赖美玲陈科君
Owner WAH HONG INDAL CORP
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