Lens driving module, camera module and method for installing driving module

Abstract

The present invention relates to a lens driving module, an imaging module, and a driving module installation method. The lens driving module includes: a base; a lens carrier movably disposed on the base and carrying an optical lens; a driving component configured to drive the lens carrier to move relative to the base in a first direction; a guide rod having an axis disposed along the first direction and located between the lens carrier and the base to guide the lens carrier to move relative to the base in the first direction; one of the base and the lens carrier is provided with a surface treatment layer, the roughness of the surface treatment layer is greater than that of other positions of the two, the guide rod is adhesively fixed to the surface treatment layer in the radial direction and is slidably connected to the other in the first direction; by providing a surface treatment layer on one of the base or the lens carrier, the roughness of the surface treatment layer is higher than the surface of other positions, and by adhesively fixing the guide rod to the surface treatment layer, the adhesive can cover a larger contact area, thereby increasing the adhesion force between the two.

Description

Technical Field

[0001] The present invention relates to the technical field of optical lenses, and particularly to a lens driving module, an imaging module, and a method for installing a driving module. Background Art

[0002] With the popularization of mobile electronic devices, the related technologies of imaging modules used in mobile electronic devices to help users obtain images have developed rapidly. Currently in the market, consumers have an increasing demand for the shooting performance of imaging modules configured in mobile electronic devices.

[0003] Currently, the optical lens of the imaging module is usually arranged in the lens carrier of the lens driving module, and the driving component of the lens driving module is used to drive the movement of the lens carrier to achieve the functions of optical focusing or optical zooming. Further, guiding members such as balls, rollers, or guide rods are usually arranged on the lens carrier to guide the focusing movement of the lens carrier. Among them, since the guide rod can be pre-fixed in one of the mover or the stator during installation and then the installation between the mover and the stator is completed, the assembly difficulty is lower than that of balls and rollers.

[0004] However, since the fixing between the guide rod and the mover / stator mostly uses adhesive fixing, as the usage time of the imaging module increases, the bonding position of the guide rod may become de-bonded due to insufficient adhesive force, and even the guide rod may fall off, thus affecting the normal use of the imaging module and having relatively poor reliability. Summary of the Invention

[0005] Based on this, in view of the problem that the adhesive position of the guide rod is prone to de-bonding or even falling off after long-term use of the current lens driving module, it is necessary to provide a lens driving module, an imaging module, and a method for installing a driving module that can improve the adhesive reliability of the guide rod.

[0006] The present application first provides a lens driving module, including: a base; a lens carrier movably arranged on the base and carrying an optical lens; a driving component configured to drive the lens carrier to move relative to the base along a first direction; a guide rod having an axis along the first direction and located between the lens carrier and the base to guide the lens carrier to move relative to the base along the first direction; one of the base and the lens carrier is provided with a surface treatment layer, the roughness of the surface treatment layer is greater than that of other positions of the two, and the guide rod is adhesively fixed to the surface treatment layer in the radial direction and is slidably connected to the other along the first direction.

[0007] In one embodiment, the base has an internal space, and the lens carrier is arranged in the internal space, wherein the base is provided with a surface treatment layer.

[0008] In one embodiment, the base is provided with a first guide rod groove, the lens carrier is provided with a second guide rod groove, the first guide rod groove and the second guide rod groove are oppositely arranged, the inner wall of the first guide rod groove is provided with the surface treatment layer, and the guide rod is arranged between the first guide rod groove and the second guide rod groove and is slidably connected to the inner wall of the second guide rod groove along a first direction.

[0009] In one embodiment, the contact area between the inner wall of the first guide rod groove and the guide rod is larger than the contact area between the inner wall of the second guide rod groove and the guide rod.

[0010] In one embodiment, the projections of the first guide rod groove and the second guide rod groove along the first direction are both trapezoidal, and the long bottom side of the trapezoid is the opening side, and the guide rod contacts the three inner walls of the first guide rod groove and contacts one or two inner walls of the second guide rod groove.

[0011] In one embodiment, the length of the first guide rod groove along the first direction is greater than or equal to the length of the guide rod along the first direction.

[0012] In one embodiment, the length of the guide rod along the first direction is greater than the length of the second guide rod groove along the first direction.

[0013] In one embodiment, gaskets are embedded in the inner walls of the first guide rod groove and the second guide rod groove.

[0014] In one embodiment, the first guide rod groove penetrates the base along the first direction or forms a bottom wall in the base along the first direction; the second guide rod groove penetrates the lens carrier along the first direction.

[0015] In one embodiment, the surface treatment layer is a laser engraving treatment layer.

[0016] The second aspect of the present application provides an imaging module, including a base, a photosensitive module, an anti-shake driving module, the above-mentioned lens driving module, an optical lens, and a housing;

[0017] The optical lens is arranged on the lens carrier and is used for receiving light and emitting light along a first direction;

[0018] The anti-shake driving module is arranged between the base and the lens driving module and is configured to drive the base to move relative to the base along a second direction and / or a third direction;

[0019] The photosensitive module is arranged on the base and is used for receiving the light emitted by the optical lens for imaging:

[0020] The housing covers the base.

[0021] The third aspect of the present application provides a method for installing a driving module, which is applicable to the above-mentioned lens driving module, and includes the following steps:

[0022] a. Perform surface treatment on one of the base or the lens carrier to form a surface treatment layer;

[0023] b. Apply pre-dotting glue to the guide rod and adhesively fix the guide rod to the surface treatment layer;

[0024] c. Expose the glue to cure the glue;

[0025] d. Apply oil to the surface of the guide rod, and slidably connect the other one of the base or the lens carrier to the guide rod to complete the installation.

[0026] For the above-mentioned lens driving module, by providing a surface treatment layer on one of the base or the lens carrier, the roughness of the surface treatment layer is higher than that of other positions. It should be understood that a rough surface has a larger true contact area compared to a smooth surface. Therefore, by adhesively fixing the guide rod to the surface treatment layer, the adhesive can cover a larger contact area, thereby increasing the adhesion force between the two, increasing the bonding reliability, and effectively reducing the possibility of situations such as the guide rod coming off or falling off. Description of the Drawings

[0027] Figure 1 is a perspective view of the camera module of the present application;

[0028] Figure 2 is a perspective view of the lens driving module of the present application;

[0029] Figure 3 is Figure 2 an exploded view of;

[0030] Figure 4 is Figure 2 an enlarged view of the second guide rod groove at A in at another angle;

[0031] Figure 5 is Figure 2 an enlarged view of the first guide rod groove at B in;

[0032] Figure 6 is Figure 2 an enlarged view of the second guide rod groove at C in at another angle;

[0033] Figure 7 is Figure 2 a perspective view of the lens carrier and the driving assembly in at another angle;

[0034] Figure 8 is Figure 1 a perspective view after hiding the optical lens in;

[0035] Figure 9 For Figure 8 Exploded view after hiding the photosensitive module;

[0036] Figure 10 It is a schematic diagram of the overall process of the installation method of the drive module of the present application.

[0037] Reference numerals: 100, base; 200, photosensitive module; 300, anti-shake drive module; 310, first anti-shake component; 310a, first anti-shake magnet; 310b, first anti-shake coil; 320, second anti-shake component; 320a, second anti-shake magnet; 320b, second anti-shake coil; 330, support; 330a, first ball; 330b, second ball; 330c, third ball; 400, optical lens; 500, housing;

[0038] 10, base; 11, first guide rod groove; 12, drive circuit board groove; 20, lens carrier; 21, second guide rod groove; 211, limit groove; 212, limit protrusion; 22, drive magnet groove; 30, drive component; 31, drive magnet; 32, drive coil; 33, drive sensing element; 34, drive circuit board; 40, guide rod. Detailed implementation manners

[0039] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation manners of the present invention will be given with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0041] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0042] In the present invention, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0044] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it may be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0045] Please refer to Figure 1 、 Figure 2 and Figure 3As shown, the present application first provides a lens driving module, including: a base 10; a lens carrier 20 movably disposed on the base 10 and carrying an optical lens 400, the optical lens 400 having an optical axis; a driving component 30 configured to drive the lens carrier 20 to move relative to the base 10 in a first direction parallel to the optical axis of the optical lens 400; a guide rod 40 having an axis disposed along the first direction and located between the lens carrier 20 and the base 10 to guide the lens carrier 20 to move relative to the base 10 in the first direction; one of the base 10 and the lens carrier 20 is provided with a surface treatment layer, the roughness of the surface treatment layer is greater than that of other positions of the two, the guide rod 40 is adhesively fixed to the surface treatment layer in the radial direction and is slidably connected to the other in the first direction.

[0046] In the present application, by providing a surface treatment layer on one of the base 10 or the lens carrier 20, the roughness of the surface treatment layer is higher than that of the surfaces of other positions. It should be understood that a rough surface has a larger true contact area compared to a smooth surface. Therefore, by adhesively fixing the guide rod 40 to the surface treatment layer, the adhesive can cover a larger contact area, thereby increasing the adhesion force between the two, increasing the bonding reliability, and effectively reducing the possibility of situations such as the guide rod 40 coming off or falling off.

[0047] Specifically, the surface treatment layer can be obtained by mechanically, chemically or other means treating the surface of the base 10 or the lens carrier 20. Among them, mechanical treatment methods include but are not limited to sandblasting, grinding, wire drawing, knurling, etc., chemical treatment methods include but are not limited to acid-base etching, anodizing, chemical shot peening, etc., and other treatment methods include but are not limited to plasma treatment, laser etching, etc., as long as the bonding reliability to the guide rod 40 can be improved by increasing the surface roughness.

[0048] Preferably, the surface treatment layer is a laser-engraved treatment layer obtained by laser-engraving the surface of the base 10 or the lens carrier 20, and has advantages such as high precision and high controllability.

[0049] In some other embodiments, the surface treatment layer can also be an independent part, the roughness of the surface treatment layer is greater than that of the base 10 and the lens carrier 20, and it is fixed to the base 10 and the lens carrier 20 by welding or other common fixing methods.

[0050] Please refer to Figure 2 and Figure 3 As shown, in some embodiments, the base 10 has an internal space, and the lens carrier 20 is disposed in the internal space. It should be understood that disposing the lens carrier 20 in the internal space of the base 10 can make the volume and weight of the lens carrier 20 smaller than those of the base 10, thereby reducing the weight that the driving component 30 needs to drive and reducing the focusing power consumption.

[0051] Specifically, there is only one degree of freedom of movement in the first direction between the lens carrier 20 and the base 10. That is to say, the lens carrier 20 is relatively fixed to the base 10 in other directions.

[0052] More specifically, when the camera module operates functions such as focusing and zooming, the driving component 30 drives the lens carrier 20 to move relative to the base 10 in the first direction, thereby driving the optical lens 400 to move in the first direction. That is to say, during the focusing movement, the lens carrier 20 moves within the base 10; when the camera module operates the anti-shake function, the anti-shake driving module 300 drives the base 10 to rotate in the second direction or the third direction, and the base 10 drives the lens carrier 20 and the optical lens 400 to rotate in the second direction or the third direction. That is to say, during the anti-shake movement, the base 10 carries the lens carrier 20 to move. Wherein, the second direction and the third direction are both perpendicular to the first direction, and the second direction and the third direction are perpendicular to each other.

[0053] In some other embodiments, the lens carrier 20 may also have an internal space, and the base 10 is disposed within the internal space of the lens carrier 20. In this embodiment, during the focusing movement, the lens carrier 20 carries the base 10 to move, and during the anti-shake movement, the base 10 moves within the lens carrier 20.

[0054] In some embodiments, the base 10 is provided with a surface treatment layer. That is to say, the guide rod 40 is fixed to the surface treatment layer of the base 10. It should be understood that by fixing the guide rod 40 to the base 10, when the lens carrier 20 moves relative to the base 10 in the first direction, the lens carrier 20 does not need to carry the guide rod 40, thereby being able to further reduce the weight that the driving component 30 needs to drive, achieving the effect of reducing the focusing power consumption.

[0055] Please refer to Figure 3 、 Figure 4 and Figure 5 As shown, in some embodiments, the base 10 is provided with a first guide rod groove 11, and the lens carrier 20 is provided with a second guide rod groove 21. The first guide rod groove 11 and the second guide rod groove 21 are disposed opposite to each other. The inner wall of the first guide rod groove 11 is provided with a surface treatment layer. The guide rod 40 is disposed between the first guide rod groove 11 and the second guide rod groove 21 and is slidably connected to the inner wall of the second guide rod groove 21 in the first direction; the guide rod 40 is restricted to the position between the base 10 and the lens carrier 20 through the inner walls of the first guide rod groove 11 and the second guide rod groove 21.

[0056] In some embodiments, the lens driving module includes at least two guide rods 40. A plurality of first guide rod grooves 11 corresponding to the guide rods 40 one by one are formed on the base 10, and a plurality of second guide rod grooves 21 corresponding to the guide rods 40 one by one are formed on the lens carrier 20, so as to ensure that the lens carrier 20 will not shift or deflect to one side relative to the guide rods 40, thereby increasing the guiding stability of the guide rods 40 to the lens carrier 20.

[0057] Specifically, the lens driving module includes two guide rods 40. The inner contour of the inner space of the base 10 and the outer contour of the lens carrier 20 are both square in projection along the first direction. Two first guide rod grooves 11 are formed at both ends of one inner wall side of the base 10, and two corresponding second guide rod grooves 21 are formed on the lens carrier 20.

[0058] In some embodiments, the contact area between the inner wall of the first guide rod groove 11 and the guide rod 40 is larger than the contact area between the inner wall of the second guide rod groove 21 and the guide rod 40. It should be understood that since the surface area of the guide rod 40 is limited, by restricting the contact area between it and the inner wall of the first guide rod groove 11 to be larger than the contact area with the inner wall of the second guide rod groove 21, the contact area between the guide rod 40 and the inner wall of the first guide rod groove 11 can be increased, and the contact area between the guide rod 40 and the inner wall of the second guide rod groove 21 can be reduced. Among them, increasing the contact area between the inner wall (i.e., the surface treatment layer) of the first guide rod groove 11 and the guide rod 40 can further improve the adhesion between the guide rod 40 and the base 10 and improve the bonding reliability; while reducing the contact area between the guide rod 40 and the inner wall of the second guide rod groove 21 can reduce the friction between the two, reduce the focusing power consumption of the driving assembly 30, and improve the sliding smoothness of the lens carrier 20 relative to the base 10.

[0059] Further, please refer to Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, the projections of the first guide rod groove 11 and the second guide rod groove 21 along the first direction are both trapezoidal, and the long bottom side of the trapezoid is the open side. The guide rod 40 contacts the three inner walls of the first guide rod groove 11 and contacts one or two inner walls of the second guide rod groove 21.

[0060] Specifically, referring to Figure 3 and Figure 4 , the three inner walls of the first guide rod groove 11 contact the guide rod 40, and the two inclined surfaces corresponding to the second guide rod groove 21 contact the guide rod 40, and the guide rod 40 is fully limited through a total of five contact surfaces; referring to Figure 3 and Figure 6 , the three sides of the first guide rod groove 11 contact the guide rod 40, and the short bottom surface corresponding to the second guide rod groove 21 contacts the guide rod 40, and the guide rod 40 is fully limited through a total of three contact surfaces.

[0061] Of course, in some other embodiments, the projections of the first guide rod groove 11 and the second guide rod groove 21 in the first direction may also have other shapes. It should be understood that when the guide rod 40 contacts at least three inner walls of the first guide rod groove 11 and the second guide rod groove 21 in total, sufficient limitation of the guide rod 40 can be achieved. Among them, the more contact surfaces between the first guide rod groove 11 and the guide rod 40, the stronger the bonding reliability, and the fewer contact surfaces between the second guide rod groove 21 and the guide rod 40, the smaller the sliding friction. That is to say, it is only necessary to ensure that the two contact at least three sides of the guide rod 40, and the contact surface between the first guide rod groove 11 and the guide rod 40 is as large as possible, and the contact surface between the second guide rod groove 21 and the guide rod 40 is as small as possible.

[0062] Please refer to Figure 4 As shown, in some embodiments, a limiting groove 211 is formed in the inner wall of the second guide rod groove 21. The length of the limiting groove 211 in the first direction is less than that of the second guide rod groove 21. On the premise of ensuring that the guide rod 40 can contact the inner wall of the second guide rod groove 21 and play a role in limiting and guiding, the contact area between the guide rod 40 and the second guide rod groove 21 is reduced to reduce the sliding friction.

[0063] Please refer to Figure 6 As shown, in some embodiments, a limiting protrusion 212 is provided on the inner wall of the second guide rod groove 21. The length of the limiting protrusion 212 in the first direction is less than that of the second guide rod groove 21. The guide rod 40 contacts the limiting protrusion 212 and is slidably connected in the first direction to further reduce the contact area between the guide rod 40 and the second guide rod groove 21 and reduce the sliding friction.

[0064] In some embodiments, the length of the first guide rod groove 11 in the first direction is greater than or equal to the length of the guide rod 40 in the first direction. It should be understood that if the length of the first guide rod groove 11 is less than that of the guide rod 40, part of the guide rod 40 will protrude from the first guide rod groove 11 in the first direction, and the protruding part of the guide rod 40 cannot be bonded to the first guide rod groove 11. By restricting the length of the first guide rod groove 11 to be greater than or equal to that of the guide rod 40, it can be ensured that the guide rod 40 is completely located in the first guide rod groove 11 along the length direction, thereby increasing the contact area between the guide rod 40 and the inner wall of the first guide rod groove without changing the length of the guide rod 40, and further improving the bonding reliability.

[0065] Further, in some embodiments, the length of the guide rod 40 in the first direction is greater than the length of the second guide rod groove 21 in the first direction. Since the guide rod 40 is fixed to the base 10, the movement of the lens carrier 20 relative to the base 10 can be regarded as the movement of the inner wall of the second guide rod groove 21 relative to the guide rod 40. It should be understood that the length difference between the second guide rod groove 21 and the guide rod 40 in the first direction is the movement stroke of the lens carrier 20. By restricting the length of the guide rod 40 to be greater than that of the second guide rod groove 21, compared with the case where the length of the second guide rod groove 21 is greater than that of the guide rod 40, the length of the second guide rod groove 21 is shorter and the thickness of the lens carrier 20 is smaller under the premise of the same movement stroke. That is to say, by restricting the length of the guide rod 40 in the first direction to be greater than the length of the second guide rod groove 21 in the first direction, the thickness and weight of the lens carrier 20 can be reduced, thereby reducing the focusing power consumption of the driving assembly 30.

[0066] In some embodiments, gaskets are embedded in the inner walls of the first guide rod groove 11 and the second guide rod groove 21. The gaskets are made of metal or other materials with higher strength to increase the structural strength of the bottom of the first guide rod groove 11 and the second guide rod groove 21, and to avoid deformation of the bottom due to excessive pressure from the guide rod 40 during the use of the lens driving module. Preferably, the base 10 and the lens carrier 20 are made of plastic, the gasket is made of metal, and the gasket is integrally formed with the base 10 or the lens carrier 20 through an insert molding process.

[0067] In some embodiments, please refer to Figure 5 As shown, the first guide rod groove 11 forms a bottom wall in the base 10 in the first direction. Surface treatment layers are provided on the inner side wall and the bottom wall of the first guide rod groove 11. The guide rod 40 is adhesively fixed to the inner side wall and the bottom wall of the first guide rod groove 11. The bottom wall can increase the limit of the guide rod 40 in the first direction, facilitate the positioning of the guide rod 40, and at the same time have a larger bonding area and higher bonding reliability.

[0068] In some other embodiments, the first guide rod groove 11 penetrates the base 10 in the first direction. A surface treatment layer is provided on the inner side wall of the first guide rod groove 11. The guide rod 40 is adhesively fixed to the inner side wall of the first guide rod groove 11, and the thickness requirement for the base 10 is lower.

[0069] Please refer to Figure 4 As shown, in some embodiments, the second guide rod groove 21 penetrates the lens carrier 20 in the first direction, which is convenient for inserting the lens carrier 20 into the base 10 fixed with the guide rod 40 later, and further reduces the installation difficulty.

[0070] Please combine Figure 2 、 Figure 3 and Figure 7As shown, in some embodiments, the driving assembly 30 includes a driving magnet 31 and a driving coil 32 which are oppositely arranged, and is used to drive the lens carrier 20 to move relative to the base 10 along a first direction. Specifically, a driving magnet groove 22 is formed on the side surface of the lens carrier 20, the driving magnet 31 is arranged in the driving magnet groove 22, and the driving coil 32 is fixed relative to the base 10 along the first direction, that is to say, there is no relative movement between the driving coil 32 and the base 10 along the first direction.

[0071] More specifically, both of the two guide rods 40 and the driving magnet 31 are located on the same side of the lens carrier 20, and the driving magnet 31 is located between the two guide rods 40. It should be understood that since the driving magnet 31 is not located at the center of the lens carrier 20, the lens carrier 20 is bound to have a tilting tendency under the action of magnetic force. The fulcrum of this tilting tendency is the contact position between the guide rod 40 and the inner wall of the second guide rod groove 21. By arranging the two guide rods 40 and the driving magnet 31 on the same side, the distance between the magnetic force acting point and the fulcrum of the force can be reduced, thereby reducing the possibility of the lens carrier 20 tilting; further, by arranging the driving magnet 31 between the two guide rods 40, the force conditions of the two fulcrums of the force can also be balanced, thereby improving the sliding stability of the lens carrier 20.

[0072] In some embodiments, the driving assembly 30 further includes a driving sensing element 33 arranged relative to the driving magnet 31. The driving sensing element 33 is fixed relative to the base 10 along the first direction and can acquire the magnetic field information of the driving magnet 31, so as to sense the moving stroke of the lens carrier 20 along the first direction.

[0073] Please refer to Figure 1 、 Figure 8 and Figure 9 As shown, a second aspect of the present application provides an imaging module, including a base 100, a photosensitive module 200, an anti-shake driving module 300, the above-mentioned lens driving module, an optical lens 400, and a housing 500; the optical lens 400 is arranged on the lens carrier 20 and is used to receive and emit light along the first direction; the anti-shake driving module 300 is arranged between the base 100 and the lens driving module and is configured to drive the base 10 to move relative to the base 100 along a second direction and / or a third direction; the photosensitive module 200 is arranged on the base 100 and is used to receive the light emitted by the optical lens 400 for imaging to obtain an image of the object to be photographed: the housing 500 covers the base 100.

[0074] Among them, the optical lens 400 is held on the photosensitive path of the photosensitive module 200. The optical lens 400 includes a lens barrel and at least one optical lens installed in the lens barrel. The optical lens has an optical axis O parallel to the first direction (refer to Figure 1), the optical axis of the optical lens is also the optical axis of at least one optical lens installed in the lens barrel. At least one optical lens is disposed in the lens barrel along the optical axis, and the photosensitive module 200 is disposed opposite to the optical lens 400 along the optical axis direction.

[0075] The photosensitive module 200 includes a photosensitive chip and an imaging circuit board. The photosensitive chip is used to receive the light reflected by the object collected by the optical lens 400 for imaging, and is electrically connected to other electronic devices through the imaging circuit board. The electronic component can be one or more of passive electronic devices such as resistors and capacitors, or can be one or more of active electronic devices such as drive chips and memory chips.

[0076] The imaging circuit board has a hole in the middle, and the photosensitive chip can be installed on the imaging circuit board in a sunken manner. Further, the photosensitive chip is installed on the imaging circuit board by flip-chip, and the photosensitive area of the photosensitive chip can be exposed through the opening area of the imaging circuit board.

[0077] The base 100 is formed on the imaging circuit board, and the middle of the base 100 has a hole to expose the photosensitive chip.

[0078] Please refer to Figure 9 As shown, the anti-shake drive module 300 includes a first anti-shake component 310, a second anti-shake component 320, and a support 330. The first anti-shake component 310 includes a first anti-shake magnet 310a disposed in the base 10 and a first anti-shake coil 310b disposed opposite to the base 100 along the first direction, and is used to drive the base 10 to rotate relative to the base 100 around the second direction; the second anti-shake component 320 includes a second anti-shake magnet 320a disposed in the base 10 and a second anti-shake coil 320b disposed opposite to the base 100 along the first direction, and is used to drive the base 10 to rotate relative to the base 100 around the third direction; the support 330 is disposed between the base 10 and the base 100 along the first direction, and forms a fulcrum on the opposite surfaces of the two to support the rotation of the base 10 around the fulcrum.

[0079] Specifically, the second anti-shake component 320 and the drive component 30 are disposed on opposite sides of the base 100, and the first anti-shake component 310 is disposed between the second anti-shake component 320 and the drive component 30 and on one side of the base 100 to make full use of the space of the base 100.

[0080] Further, the support 330 includes a first ball 330a, a second ball 330b, and a third ball 330c. The first ball 330a is located between the drive component 30 and the first anti-shake component 310, the second ball 330b is located between the first anti-shake component 310 and the second anti-shake component 320, and the third ball 330c is located on the side of the second anti-shake component 320 away from the second ball 330b. The three balls are all located at the vertex positions of the base 100.

[0081] Among them, an imaginary line along the third direction passes through the first ball 330a and the second ball 330b. The first ball 330a and the second ball 330b are arranged on both sides of the first anti-shake component 310 along the imaginary line in the third direction to support the movement of the base 10 along the third direction under the drive of the second anti-shake component 320; an imaginary line along the second direction passes through the second ball 330b and the third ball 330c. The second ball 330b and the third ball 330c are arranged on both sides of the second anti-shake component 320 along the imaginary line in the second direction to support the movement of the base 10 along the second direction under the drive of the first anti-shake component 310.

[0082] Furthermore, the base 10 is provided with first ball grooves corresponding to each ball one by one, and the base 100 is provided with second ball grooves opposite to the first ball grooves along the first direction. Each ball is movably clamped between the first ball groove and the second ball groove.

[0083] In some embodiments, the first anti-shake component 310 further includes a first anti-shake sensing element, and the first anti-shake sensing element can acquire the magnetic field information of the first anti-shake magnet 310a to sense the rotation stroke of the base 10 around the second direction; the second anti-shake component 320 further includes a second anti-shake sensing element, and the second anti-shake sensing element can acquire the magnetic field information of the second anti-shake magnet 320a to sense the rotation stroke of the base 10 around the third direction.

[0084] In some embodiments, please refer to Figure 9 , a driving circuit board 34 is fixed on the base 100, and the driving coil 32 and the driving sensing element 33 are electrically connected to the driving circuit board 34. Further, a driving circuit board groove 12 corresponding to the driving circuit board 34 is formed through the base 10 to reduce the distance between the driving coil 32 and the driving magnet 31 and improve the driving efficiency.

[0085] Please refer to Figure 10 As shown, a third aspect of the present application provides a method for installing a driving module, which is applicable to the above-mentioned lens driving module, and includes the following steps:

[0086] S100. Perform surface treatment on one of the base or the lens carrier to form a surface treatment layer;

[0087] S200. Pre-apply glue to the guide rod and adhesively fix the guide rod to the surface treatment layer;

[0088] S300. Expose the glue to cure the glue;

[0089] S400. Apply oil to the surface of the guide rod, and slidably connect the other of the base or the lens carrier to the guide rod to complete the installation.

[0090] Specifically, the glue used is UV thermosetting glue. Using UV thermosetting glue for pressure exposure avoids the plastic part deformation caused by baking and pressure holding. UV thermosetting glue combines the advantages of ultraviolet curing and thermal curing. It can be quickly positioned by ultraviolet light and the bonding strength can be further enhanced by thermal curing.

[0091] More specifically, UV thermosetting glue can quickly complete preliminary curing under ultraviolet light irradiation and achieve complete curing through further thermal curing. This rapid curing characteristic makes it very suitable for automated production lines, which can significantly improve production efficiency. Moreover, after UV thermosetting glue cures, it has high bonding strength, is applicable to a variety of substrates, and can ensure the bonding strength between metal and plastic.

[0092] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0093] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the invention patent should be subject to the appended claims.

Claims

1. A lens driving module, characterized in that Comprising: A base (10); A lens carrier (20), movably arranged on the base (10) and carrying an optical lens (400); A driving component (30), configured to drive the lens carrier (20) to move relative to the base (10) in a first direction parallel to the optical axis of the optical lens (400): A guide rod (40), with its axis arranged in the first direction and located between the lens carrier (20) and the base (10), to guide the lens carrier (20) to move relative to the base (10) in the first direction; The base (10) has an internal space, and the lens carrier (20) is arranged in the internal space. Wherein, the base (10) is provided with a surface treatment layer, and the roughness of the surface treatment layer is greater than that of other positions of the two. One side of the guide rod (40) in the radial direction is adhesively fixed to the surface treatment layer, and the other side is slidably connected to the lens carrier (20) in the first direction; The base (10) is provided with a first guide rod groove (11), and the lens carrier (20) is provided with a second guide rod groove (21). The first guide rod groove (11) and the second guide rod groove (21) are arranged oppositely. The inner wall of the first guide rod groove (11) is provided with the surface treatment layer, and the guide rod (40) is arranged between the first guide rod groove (11) and the second guide rod groove (21) and is slidably connected to the inner wall of the second guide rod groove (21) in the first direction; The contact area between the inner wall of the first guide rod groove (11) and the guide rod (40) is greater than the contact area between the inner wall of the second guide rod groove (21) and the guide rod (40).

2. The lens driving module according to claim 1, wherein The projections of the first guide rod groove (11) and the second guide rod groove (21) in the first direction are both trapezoidal, and the long bottom side of the trapezoid is the open side. The guide rod (40) contacts the three inner walls of the first guide rod groove (11) and contacts one or two inner walls of the second guide rod groove (21).

3. The lens driving module according to claim 1, wherein The length of the first guide rod groove (11) in the first direction is greater than or equal to the length of the guide rod (40) in the first direction.

4. The lens driving module according to claim 3, wherein The length of the guide rod (40) in the first direction is greater than the length of the second guide rod groove (21) in the first direction.

5. The lens driving module according to claim 1, wherein Gaskets are embedded in the inner walls of the first guide rod groove (11) and the second guide rod groove (21).

6. The lens driving module according to claim 1, wherein The first guide rod groove (11) penetrates the base (10) in the first direction or forms a bottom wall in the base (10) in the first direction; The second guide rod groove (21) penetrates the lens carrier (20) in the first direction.

7. The lens driving module according to any one of claims 1 to 6, characterized in that, The surface treatment layer is a laser engraving treatment layer.

8. An imaging module, characterized in that, Including a base (100), a photosensitive module (200), an anti-shake driving module (300), a lens driving module as described in any one of claims 1 to 7, an optical lens (400), and a housing (500); The optical lens (400) is arranged on the lens carrier (20) and is used to receive and emit light in the first direction; The anti-shake driving module (300) is disposed between the base (100) and the lens driving module, and is configured to drive the base (10) to move relative to the base (100) in the second direction and / or the third direction; The photosensitive module (200) is disposed on the base (100) and is used to receive the light emitted by the optical lens (400) for imaging: The housing (500) covers the base (100).

9. A method for installing a driving module, applicable to the lens driving module according to any one of claims 1 to 7, characterized in that, Including the following steps: a. Performing surface treatment on one of the base or the lens carrier to form a surface treatment layer; b. Pre-dispensing glue on the guide rod and adhesively fixing the guide rod to the surface treatment layer; c. Exposing the glue to cure the glue; d. Applying oil to the surface of the guide rod, and slidingly connecting the other of the base or the lens carrier to the guide rod to complete the installation.

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