Anti-magnetic-interference optical anti-vibration voice coil motor and manufacturing method therefor

Abstract

The invention is suitable for the technical field of optical anti-vibration devices, and provides an anti-magnetic-interference optical anti-vibration voice coil motor and a manufacturing method therefor. The voice coil motor comprises a housing, at least three groups of magnets, a lens carrier, one power-on spring, and at least three coils. The magnets are fixed on an inner wall of the housing, and the coils are disposed on an outer wall of the lens carrier, wherein the coils are opposite to the magnets. The power-on spring is in fixed and mechanical connection with the bottom of the lens carrier and the housing, and is provided with at least three conductive loops, wherein each conductive loop is corresponding to one coil and provided with an input end and a common end, wherein the input end and the common end are isolated from each other and adjacent to each other. The first and second line ends of each coil are respectively in electrical connection with the corresponding input end and the corresponding common end. The voice coil motor is simple in manufacture, is high in production efficiency, improves the focusing linearity, and improves the accuracy and speed of automatic focusing. The magnets are located in a static structure, and the voice coil motor is not liable to be affected by an external magnetic field during working.

Description

technical field [0001] The invention belongs to the technical field of optical anti-shake devices, in particular to an anti-magnetic interference optical anti-shake voice coil motor and a manufacturing method thereof. Background technique [0002] Today's miniature optical image stabilization voice coil motor technology has been widely used in high-end mobile phones, which can effectively reduce the chance of blurry photos taken in low-light environments, and reduce the disturbing shake in videos. However, compared with general auto-focus motors, anti-shake voice coil motors are more complex in design, lower in production yield and efficiency, and higher in cost. Therefore, described technology has not yet been popularized to mid-end and low-end mobile phones, and most mobile phone users still fail to enjoy the benefits brought by this technology. [0003] At present, miniature optical anti-shake voice coil motors can be divided into three categories, and their names and an...

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Problems solved by technology

[0013] The technical problem to be solved by the present invention is to provide an anti-magnetic interference optical anti-vibration voice coil motor and its manufacturing method which is beneficial to improve production efficiency, has good linear characteristics and is not easily affected by external magnetic fields

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