Electromagnetic interference preventing mechanism for micro-lens

Abstract

The invention provides a mechanism for preventing electromagnetic interference of micro-lens, comprising a frame, around which four magnetism modules are arranged; a bearing seat which is used for bearing a micro-lens and externally covered with a coil pack; at least one elastic component, an external fixed part and an internal movable part of which mutually connects four groups of strings with ninety degrees, the external fixed part is connected with the frame, and the internal movable part is connected with the bearing seat, thus forming an elastic movable supporting bearing seat which is suspended at the center of the frame; an upper cover and a lower cover which are respectively arranged above and below the frame and fixedly connects the elastic component on the frame; a metal outer cover which covers the external parts of the upper cover, the elastic component, the bearing seat, the frame and the lower cover, and the bottom of the metal outer cover is provided with at least one conductive contact pin which is electrically connected to the ground, electromagnetic effect generated to the outside is insulated by the grounding mode, and the external electromagnetic interference and the electrostatic protection are also insulated.

Description

technical field [0001] The present invention is a micro-lens electromagnetic interference prevention mechanism, in particular to a micro-focus lens that uses electromagnetic drive to drive the lens to move to achieve the focusing function, and a mechanism for preventing electromagnetic interference (EMI, EMC and ESD). Background technique [0002] Due to the advancement of technology, the volume of digital cameras has shrunk quite small, and the current mobile phones are also equipped with digital camera functions, which are due to the modularization and miniaturization of camera lenses, and there are many Types of autofocus drive structures, currently the most commonly used is the voice coil motor (VCM), because of the advantages of small size, less power consumption, accurate actuation displacement and low price, it is suitable for short-range autofocus in micro lenses drive. [0003] like figure 1 Shown is an existing lens focusing device 200, which mainly includes a ...

AI Technical Summary

Problems solved by technology

[0005]However, in the existing focus mechanism design, most of the moving lens groups adopt "manual mode", which is inconvenient to use. If the focus mode of the lens is changed from manual Changing to electromagnetic drive allows the lens to focus automatically and simplifies the mechanism design, but it will cause problems with Electro Magnetic Interference (EMI), which is necessary for current technology products such as mobile phones, notebook computers, PDAs, etc. Conforms to electromagnetic interference (EMI), electromagnetic compatibility (Electro Magnetic Compatibility, EMC) and electrostatic protection (Electro Static Discharge, ESD) and other specifications. Therefore, if electromagnetic drive is used for focusing, it must meet EMI, EMC and ESD specifications The problem

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