TW200935113A - Electromagnetic interference prevention mechanism of micro lens - Google Patents

Abstract

An electromagnetic interference prevention mechanism of a micro lens comprises: a frame having four magnetic components disposed at four corners; a support seat that supports a micro lens and is wrapped by a coil component; at least one elastic component having four sets of 90-degree chord formed by the interconnection of an external fixing part and an internal movable part, wherein the external fixing part connects to the frame rack, and the internal movable part connects to the support seat so as to form an elastic and movable support seat that suspends in the middle of the frame rack; a top cover and a bottom cover installed on the top and bottom of the frame rack respectively for fixing and connecting the elastic component on the frame rack; a metallic shell covering the top cover, the elastic component, the support seat, the frame rack, and the bottom cover, the bottom of the metallic shell having at least one conductive piece electrically connected to ground for insulating the external electromagnetic effect by grounding and insulating external electromagnetic interference and electro static discharge.

Description

200935113 IX. INSTRUCTIONS: [Technical Field] The present invention relates to a micro lens electromagnetic interference prevention mechanism, and more particularly to a micro focus lens that uses an electromagnetic drive to drive a lens to achieve a focusing function to prevent electromagnetic interference (10) , EMC and ESD) institutions. [Prior Art] 0 Press 'Because of advances in technology, the size of digital cameras has been reduced considerably' and the current mobile phones have built digital cameras, thanks to the modularization and miniature of camera lenses. There are many types of autofocus drive structures in miniature lenses. The most commonly used is the voice coil motor (VCM), which is small in size, low in power consumption, accurate in actuator displacement, and low in 4 Berg. Advantages 'suitable as a short-range drive for autofocus in miniature lenses. As shown in FIG. 1 , the lens focusing device is not included in the prior art, and mainly comprises a lens group 201 and a light sensing component 202, which can image the reflected image light of the object to the light. On the sensing element 2〇2; if the distance between the lens group 201 and the light sensing element 2() 2 is fixed (ie, a fixed focus lens), it can only clearly show a distance of 2-3 meters (Hyper • focal distance); if you want to have a close-up function, you must use an additional lens focusing device to drive the mirror group 2〇1 displacement to change the distance between the lens group and the light sensing element. The purpose of (f_s). * When the lens group 201 has the optical zoom (Z〇〇m) function, the multiple zoom groups inside the lens group must also match the zoom magnification to generate the displacement corresponding to 200935113. The displacement also requires the focusing device to be designed in the lens module. However, the conventional focusing mechanism design, the moving lens group mostly adopts the "manual mode", which is inconvenient to use. If the lens focusing mode is changed from manual to electromagnetic driving, the lens can be automatically focused, and the mechanism e is simplified. Another 50" will cause electromagnetic interference (EMI) problems, and for current technology products such as mobile phones, notebook computers, PDAs, etc., must comply with electromagnetic interference (EMI), electromagnetic compatibility (mectr〇

Magnetic Compatibility, EMC) and Electrostatic Protection (Electro Static

Specifications such as Discharge, ESD, etc. Therefore, if the electromagnetic drive method is used for focusing, it is necessary to solve the problems of compliance with EMI, EMC, and ESD specifications. The job is 'the creator of this case is to solve the above-mentioned use of electromagnetically driven focusing lens' and meets the requirements of EMI, EMC and ESD specifications, and is devoted to research, and proposes a miniature lens electromagnetic interference prevention mechanism' with simplified mechanism design and reduced production cost. And the improved assembly process, the micro-focus structure can be used on camera modules of mobile phones, notebook computers, PDAs, etc. SUMMARY OF THE INVENTION The main object of the present invention is to provide a micro lens electromagnetic interference prevention mechanism. The electromagnetic driving method drives the carrier and the micro lens to achieve a focus function, and has good driving performance, good assembly precision, and electric power. Effect control and other advantages. In order to achieve the above object, the main technical features of the microlens focusing structure of the present invention are as follows: a frame, four magnetic components are accommodated around the same; a bearing 200935113: a 'bearing-micro lens, externally wrapped with a coil component; at least one bomb 70^ & - the outer fixed part and the inner part of the __ are connected to each other by four sets of ninety degree joint frames, the inner movable part is connected to the carrier, and the elastic movable support carrier is suspended in the center of the frame; the upper cover and the lower cover , the sub-frame is set, the upper and lower parts are fixedly connected to the elastic member on the frame; the outer metal cover is covered with the cover, the elastic element, the carrier, the outer part of the frame and the lower cover, and the bottom is provided with less f - the conductive tab is electrically connected to the ground End, the electricity generated will be externally generated

The magnetic effect is isolated by grounding and also isolates external electromagnetic interference and static electricity protection. In order to achieve the above object, the microlens focusing structure described above, wherein the elastic element is made of metal and further has an extension portion, and the extension portion is bent downward by ninety degrees as the positive and negative plates of the component power supply. The electrode plate and the elastic member are integrally formed to achieve a space saving effect. In order to achieve the above object, the second technical feature of the aforementioned micro lens focusing structure is that the carrier is restrained by the downward stress generated by the elastic member when the carrier is not actuated, and the carrier is biased against The top surface of the lower cover allows the initial position of the carrier in any direction to be fixed by the downward stress of the elastic member. In order to achieve the above object, another technique of the aforementioned micro lens focusing structure is characterized in that: at the four corners of the lower edge of the receiving seat, a downwardly extending plate is provided, and the lower cover corresponds to the position of the plate. At least one rotation suppressing hole is provided, so that the baffle can be extended to the (4) suppressing the escutcheon, and the bearing seat is prevented from rotating by an external force. In order to achieve the above object, another technology of the aforementioned micro lens focusing structure is characterized in that: a movable portion protection plate is connected to the inner movable portion of the elastic member, and the outer edge is provided with at least one convex plate; the upper cover is a hollow structure, and the inner edge corresponds to the outer edge contour of the movable part protection plate, and the inner edge is provided with a movable groove corresponding to the convex plate position, so that the convex plate can only move within the movable groove to form a vertical The linear guiding mechanism enables the bearing seat to be vertically linearly displaced only in the upper cover due to the movable portion protection plate and cannot be horizontally rotated. ^ In order to achieve the above object, another technical feature of the aforementioned micro lens focusing structure is that each of the four corners of the upper cover is provided with a positioning post, and the four corners of the elastic element, the frame and the lower cover correspond to the position of the positioning column. The positioning holes are respectively disposed in the positioning holes, and the relative positions of the components are fixed to achieve high assembly precision. In order to achieve the above object, the last technical feature of the micro lens focusing structure is that the bottom of the metal cover is further provided with at least one set of symmetrical hook legs, and the lower cover protrudes with a set of engaging portions corresponding to the position of the hook foot. The hook Φ foot can be tightly coupled with the engaging portion. [Embodiment] In order to enable the reviewing committee to better understand the techniques, means and functions of the present invention for achieving the intended purpose, please refer to the following detailed description of the invention and the accompanying drawings. It is to be understood that the invention is not limited by the scope of the invention. As shown in FIG. 2 , it is a top perspective view of the present invention, and FIG. 3 200935113 is a perspective exploded view of the focusing structure of the present invention. The focusing structure of the present invention includes a carrier 10 , a coil component 20 , and a frame 30 . Four magnetic elements 40, at least one elastic element 50, an upper cover 60, a lower cover 70, a movable portion protection plate 80, a metal outer cover 90 and a micro lens 100. The carrier 10 is used to carry the micro lens 100, and has a two-axis hole structure at the center and is provided with a thread on the inner edge of the shaft hole, so as to be correspondingly locked with the screw of the outer lens of the lens 100, so as to lock the lens 100. It is locked in the hollow shaft hole of the bearing seat 10 。. The carrier 10 is externally covered with the coil element 20. The frame 30 is in the form of a cubic hollow structure, and the four magnetic elements 4, such as magnets, are accommodated in the hollow portion of the vertical surface, and the carrier 1 is received at the center of the hollow structure of the frame 30. The carrier 1〇 can only perform a vertical linear displacement within the frame %. Referring to FIG. 4, it is a three-dimensional schematic view of the elastic member of the present invention. The elastic member 50 has a flat shape, and the center is hollowed out to form a circular hole 51 corresponding to the axial hole of the carrier 10, and the elastic member is externally The fixing portion 52 and an inner/lingual movement 53 are connected to four sets of ninety-degree chords 54 to form a spring with an outer edge fixed and an inner edge elastically movable. Preferably, the elastic member 50 may include an upper flat elastic piece and a lower flat plate. The elastic piece has an outer fixing portion 52 connected to the upper and lower ends of the frame 3〇, and the inner movable portion 53 is respectively connected to the upper and lower ends of the bearing frame 1 , for supporting the carrier 10 to be suspended and fixed thereto. At the center of the frame 3, the movable portion 53 of the elastic member 50 transmits a spring composed of four sets of ninety-degree chords 54 for the load-bearing seat 10 to absorb the average force of the impact, vibration, and falling X, γ, and z directions. Moreover, the elastic member 50 is made of metal, and further has an extending portion 55, which can bend the extension portion 55 of the 200935113 downward by ninety degrees, and is electrically connected to the circuit board (not shown) to supply power to the coil component 20. The positive and negative plates "form the electrode plate and the elastic member 50 to achieve a space saving effect.

The upper cover 60 and the lower cover 70 are disposed above and below the frame 3, and the elastic member 5G can be fixedly connected to the frame. Please refer to FIG. 3 and FIG. 5 together. The cross-sectional view of the Α·Α, when the carrier 1 is not actuated, is limited by the downward stress generated by the elastic member 5〇, so that the carrier 1 〇 is pressed downward against the top surface of the lower cover 70, so that The carrier, whether placed face up, down or horizontally, will be fixed by the elastic element % downward stress so that the initial position of the carrier 1G in any direction does not cause vertical axial sway and Displacement. Each of the four corners of the lower edge of the carrier 10 is provided with a downwardly extending baffle 12, and the lower cover 7 is further provided with at least one rotation suppressing hole 71 at the position corresponding to the plate 12. The rotation suppressing hole 71 is extended to prevent the carrier 10 from being rotated by an external force. The movable part I is further disposed between the upper cover 60 and the bearing base 10: the movable part 53 of the living element is connected to the outer edge of the support plate, and the inner edge corresponds to the hollow structure, and the inner edge corresponds to The movable part protects the outer edge of the protective plate 8 , the brain part is tilted. The convex plate 81, and the inner edge of the upper cover 6 对 corresponds to the convex plate 8 = the opening 6 is hung so that the convex plate 81 can only be in the concave Within the slot 61, the shape f-t linear guiding mechanism enables the carrier _ movable portion protection 7 to be vertically linearly displaced only in the upper cover 6 (four) and cannot be rotated at the corner of the fourth cover 60 of the 200935113 § A positioning post 62 is disposed, and the four corners of the elastic member 50, the frame 30 and the lower cover 70 are respectively provided with positioning holes 56, 31 and 73 at positions of the positioning post 62, and the positioning post 62 can be accommodated therein. Among the positioning holes 56, 31, and 73, the relative positions of the respective members are fixed to achieve high assembly accuracy.

The metal cover 90 is covered on the outside of the carrier, the frame, the elastic member 50, the upper cover 60 and the lower cover 70, and at the bottom is provided with at least one conductive tab 91. The metal cover 90 has an electrical conductive effect, and the conductive connection can be utilized. The chip 91 is electrically connected to the ground end of the circuit board (not shown), and the electromagnetic effect generated by the coil component 2〇 and the magnetic component 40 is isolated by grounding, and the external electromagnetic interference and electrostatic protection can be isolated. A rabbit genus Yuchen yuchen is further provided with at least one set of symmetrical hooks. The lower cover 70 is convexly disposed at a position corresponding to the hook 92. The set of engaging portions 72 can be engaged with the engaging portion 72. Can be closely combined. When the human hair is made of a structure, the electric component is led to the coil element 20', and the element 2 () generates a magnetic field and has a thrust = the linear displacement of the bearing egg in the frame 3G in the straight direction. The carrier H) and the micro lens just (4) are finished at the in-focus position. As described above, the above-mentioned structure of the present invention achieves the focusing function by the electric-weave mode (four), and has the drive _, and the assembly precision is good. Electromagnetic effect _ and other advantages The above-disclosed technology provides a:: the month of the month, the value of the door, and its use before the application is not seen in the publication or •11- 200935113, Cheng has met the requirements of the invention patent, The invention is filed with the invention. The drawings and descriptions disclosed above are only examples of the invention, and those skilled in the art can make other improvements according to the above description, and these changes still belong to the present invention. The spirit of the invention and the scope of the patents defined below.

-12- 200935113 [Simple description of the diagram] Figure 1 is a conventional lens autofocus device. 2 is a perspective view of the micro lens focusing structure of the present invention. Figure 3 is a perspective exploded view of Figure 2. Figure 4 is a perspective view of the elastic member of the present invention. Figure 5 is a schematic view of the A-A section of Figure 2. ^ [Main component symbol description] 201 Lens group 202 Light sensing element 10 Carrier 12 Baffle 20 Coil element 30 Frame 31 Positioning hole 40 Magnetic element 50 Elastic element 51 Round hole 52 External fixing part 53 Internal movable part 54 Nine Degree string 55 Extension part 56 Positioning hole 60 Upper cover 〇-13- 200935113 61 Removable groove 62 Positioning post 70 Lower cover 71 Rotation suppression hole 72 Engagement part 73 Positioning hole 80 Movable portion protection plate 81 Convex plate 90 Metal cover 91 Conductive connection Piece 92 hook foot 100 micro lens

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Claims (1)

200935113 X. Patent application scope: 1. A miniature lens focusing structure, comprising: a frame, which has a cubic hollow structure, and a four-dimensional magnetic element is accommodated in a hollow portion of a vertical surface; a bearing seat has a hollow shaft hole structure and a shaft hole The inside of the micro-lens is externally covered with a coil component; at least the elastic component is in the form of a flat plate, and the center is hollowed out to form a circular hole corresponding to the axial hole of the cymbal bearing seat, and the external fixing portion and the inner movable portion are connected to each other. a ten-degree string, the outer fixing portion is connected to the frame, and the inner movable portion is connected to the carrier, and the elastic movable support is used to support the carrier to hang in the center of the frame; the upper cover and the lower cover are respectively disposed above and below the frame, and the elastic member is fixedly connected to the frame. a metal cover covering the upper cover, the elastic member, the carrier, and the frame; the outer portion of the cover, at the bottom, at least the conductive tab is electrically connected to the ground end, and the external electromagnetic effect is isolated by grounding, Isolation of electromagnetic interference and electrostatic protection of H. 2. The microlens focusing structure as described in the Chinese Patent Application No. 4, wherein the 13-component element may include an upper flat elastic piece and a lower flat elastic piece, wherein: ^ part of the knot is connected to the upper and lower ends of the miscellaneous frame, and The inner turn portion is connected to the upper and lower ends of the carrier. 3. The micro-lens focusing structure as described in U.S. (4), the fifth component is made of metal, and further has an extension portion, and the extension portion is bent downward by ten degrees, as the positive and negative poles for supplying power to the coil component. board. 4. As claimed in the patent _ 丨 之 之 微型 微型 ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四At least one rotation suppressing hole is further provided at the position of the plate, and the baffle can just protrude into the rotation suppressing hole. 5. The microlens focusing structure of claim 1, further comprising: a movable portion protection plate disposed between the upper cover and the carrier, connected to the movable portion of the elastic member, and having an outer edge At least one convex plate; the upper cover is a hollow structure, and the inner edge corresponds to the outer edge contour of the movable portion protection plate, and the inner edge is provided with a movable groove corresponding to the convex plate position, so that the convex plate can only be in the concave shape The movement within the slot forms a vertical linear guide. 6. The micro lens focusing structure according to claim 1, wherein each of the four corners of the upper cover is provided with a positioning post, and the four corners of the elastic element, the frame and the lower cover are respectively disposed at the position of the positioning column. There are positioning holes 'the positioning post can be accommodated in the positioning holes to fix the relative positions of the components. 7. The microlens focusing structure according to claim 1, wherein the metal cover has at least one set of symmetrical hooks at the bottom and the lower cover has a set of engaging portions corresponding to the hook position. The hook foot can be tightly coupled with the engaging portion. XI. Schema: -16-