Driving device, camera module and electronic equipment

Abstract

The invention relates to a driving device, a camera module and electronic equipment, the driving device comprises a first bearing part, a second bearing part, a first adjusting assembly and a second adjusting assembly, the first bearing part is used for bearing a first lens; the second bearing part and the first bearing part are arranged along the axial direction of the first lens, and the second bearing part is used for bearing a second lens; the first adjusting assembly is used for adjusting the position of the first bearing part so as to adjust the optical axis position of the first lens; the second adjusting assembly is used for adjusting the position of the second bearing part so as to adjust the optical axis position of the second lens. Thus, the optical axis positions of the first lens and the second lens are adjusted through the first adjusting assembly and the second adjusting assembly respectively, the response speed of adjusting the positions of the two optical axes can be effectively improved, the anti-shake effect is effectively improved, the image quality of the electronic equipment is improved, and then the use experience of a user is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of electronic devices, and particularly to a driving device, a camera module and an electronic device. Background Art

[0002] With the continuous progress of technology, electronic devices such as mobile phones have functions such as autofocus, anti-shake, and zoom. However, in related technologies, the anti-shake method has the problem of poor anti-shake effect, thus affecting the image quality. Summary of the Invention

[0003] To overcome the problems existing in related technologies, the present disclosure provides a driving device, a camera module and an electronic device.

[0004] According to a first aspect of the present disclosure, a driving device is provided. The driving device includes a first bearing part for bearing a first lens; a second bearing part arranged axially along the first lens with the first bearing part, the second bearing part being used for bearing a second lens; a first adjusting component for adjusting the position of the first bearing part to adjust the optical axis position of the first lens; and a second adjusting component for adjusting the position of the second bearing part to adjust the optical axis position of the second lens.

[0005] In some embodiments of the present disclosure, the driving device further includes: a first supporting part, the second bearing part is arranged in the first supporting part, and a focusing component is arranged between the second bearing part and the first supporting part, the focusing component being used for adjusting the position of the second bearing part in the optical axis direction of the second lens; the first bearing part is arranged at a first end of the first supporting part, and the first adjusting component is arranged between the first supporting part and the first bearing part.

[0006] In some embodiments of the present disclosure, the first adjusting component includes a first magnet and a first coil, one of the first magnet and the first coil is arranged on the first supporting part, and the other of the first magnet and the first coil is arranged on the first bearing part.

[0007] In some embodiments of the present disclosure, the driving device further includes: a first rolling connection part arranged between the first bearing part and the first supporting part, the first rolling connection part being used for movably connecting the first bearing part to the first supporting part.

[0008] In some embodiments of the present disclosure, the first bearing portion includes opposite first and second surfaces. A first through hole penetrating the first and second surfaces is provided on the first bearing portion, and the first lens is mounted in the first through hole. A first groove is provided on the second surface of the first bearing portion. A second groove opposite to the first groove is provided on the end surface of the first end of the first support portion. The first rolling connection portion includes a first ball. Two sides of the first ball are respectively embedded in the first groove and the second groove and can roll in the first groove and the second groove. The bottom of the first groove and the bottom of the second groove are both perpendicular to the axis of the first through hole.

[0009] In some embodiments of the present disclosure, the first support portion is in a frame shape, and a plurality of the first adjustment components are provided along the circumference of the frame shape.

[0010] In some embodiments of the present disclosure, the first support portion includes four side frames connected in sequence, and each side frame is correspondingly provided with one first adjustment component. Along the extending direction of the side frame, first balls are provided at both ends of the first adjustment component.

[0011] In some embodiments of the present disclosure, the driving device further includes: a base, the base is movably connected to the second end of the first support portion, and a second through hole for the second lens to expose is provided on the base; the second adjustment component is provided between the base and the first support portion.

[0012] In some embodiments of the present disclosure, the second adjustment component includes a second magnet and a second coil. One of the second magnet and the second coil is provided on the first support portion, and the other of the second magnet and the second coil is provided on the base.

[0013] In some embodiments of the present disclosure, the driving device further includes: a second rolling connection portion, provided between the first support portion and the base, and the second rolling connection portion is used to movably connect the first support portion to the base.

[0014] In some embodiments of the present disclosure, the base includes opposite third and fourth surfaces. The second through hole penetrates the third and fourth surfaces; a third groove is provided on the third surface of the base. A fourth groove opposite to the third groove is provided on the end surface of the second end of the first support portion. The second rolling connection portion includes a second ball. Two sides of the second ball are respectively embedded in the third groove and the fourth groove and can roll in the third groove and the fourth groove. The bottom of the third groove and the bottom of the fourth groove are both perpendicular to the axis of the second through hole.

[0015] In some embodiments of the present disclosure, the second magnet is disposed on the first support portion, and the second coil is disposed on the base; the focusing assembly includes a third coil disposed on the second bearing portion, and the third coil cooperates with the second magnet to implement position adjustment of the second bearing portion in the optical axis direction of the second lens.

[0016] In some embodiments of the present disclosure, the driving device further includes: a housing, the housing includes a top wall opposite to the first bearing portion and a side wall disposed around the top wall, a limiting post is disposed on the inner surface of the top wall, a limiting groove is disposed on the first surface of the first bearing portion opposite to the top wall, the limiting post abuts against the bottom surface of the limiting groove, a preset gap is provided between the limiting post and the side surface of the limiting groove, and the side wall is fixedly connected to the base.

[0017] In some embodiments of the present disclosure, both ends of the second bearing portion are respectively connected to the first support portion through elastic connecting members.

[0018] In some embodiments of the present disclosure, the elastic connecting member includes a first riveting portion riveted to the second bearing portion, a second riveting portion riveted to the first support portion, and an elastic connecting portion connecting the first riveting portion and the second riveting portion, and the elastic connecting portion has a meandering strip structure.

[0019] According to a second aspect of the present disclosure, a camera module is provided, the camera module includes the driving device as described in the first aspect of the present disclosure, the camera module further includes a first lens and a second lens, the first lens is mounted on the first bearing portion of the driving device, and the second lens is mounted on the second bearing portion of the driving device.

[0020] According to a third aspect of the present disclosure, an electronic device is provided, the electronic device includes the camera module as described in the second aspect of the present disclosure.

[0021] The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects:

[0022] In the driving device provided by the present disclosure, the first bearing portion for carrying the first lens and the second bearing portion for carrying the second lens are arranged along the axis of the first lens. The position of the first bearing portion is adjusted by the first adjustment component to adjust the optical axis position of the first lens, and the position of the second bearing portion is adjusted by the second adjustment component to adjust the optical axis position of the second lens. In this way, by respectively adjusting the optical axis positions of the first lens and the second lens through the first adjustment component and the second adjustment component, the response speed of adjusting the two optical axis positions can be effectively improved, thereby effectively improving the anti-shake effect, enhancing the image quality of the electronic device, and further enhancing the user experience.

[0023] It should be understood that the above general description and the following detailed description are merely exemplary and explanatory, and do not limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings herein are incorporated into and constitute a part of this specification, showing embodiments consistent with the present disclosure, and together with the specification are used to explain the principles of the present disclosure.

[0025] Figure 1 is a schematic structural diagram of a driving device shown according to an exemplary embodiment;

[0026] Figure 2 is Figure 1 a cross-sectional view taken along line A-A in

[0027] Figure 3 is Figure 1 a cross-sectional view taken along line B-B in

[0028] Figure 4 is Figure 1 a cross-sectional view taken along line C-C in

[0029] Figure 5 is an exploded schematic diagram of a driving device shown according to an exemplary embodiment;

[0030] Figure 6 is a schematic structural diagram of a driving device with some structures hidden shown according to an exemplary embodiment;

[0031] Figure 7 is a schematic structural diagram of a driving device with some structures hidden shown according to another exemplary embodiment;

[0032] Figure 8 is a schematic structural diagram of a camera module shown according to an exemplary embodiment;

[0033] Figure 9 is Figure 8 a cross-sectional view taken along line D-D in

[0034] Figure 10 is an exploded schematic diagram of a camera module shown according to an exemplary embodiment.

[0035] In the figures:

[0036] 1 - Driving device; 10 - Housing; 101 - Top wall; 102 - Side wall; 103 - Limit post; 11 - First bearing part; 111 - First surface; 112 - Second surface; 113 - First through hole; 114 - First groove; 115 - Limit groove; 12 - Second bearing part; 121 - Elastic connecting piece; 1211 - First riveting part; 1212 - Second riveting part; 1213 - Elastic connecting part; 13 - First supporting part; 131 - Second groove; 132 - Frame; 133 - Side plate; 134 - Fourth groove; 14 - First adjusting component; 141 - First magnet; 142 - First coil; 15 - Second adjusting component; 151 - Second magnet; 152 - Second coil; 16 - First ball; 17 - Second ball; 18 - Base; 181 - Third surface; 182 - Fourth surface; 183 - Second through hole; 184 - Third groove; 185 - Cover plate; 19 - Third coil;

[0037] 2 - Camera module; 21 - First lens; 22 - Second lens; 23 - Adjusting adhesive layer; 24 - Filter; 25 - Second supporting part; 26 - Circuit board; 27 - First adhesive layer; 28 - Second adhesive layer. Detailed implementation mode

[0038] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0039] With the continuous progress of technology, electronic devices such as mobile phones have functions such as autofocus, anti - shake, and zoom. Generally, the zoom function is mainly achieved in two ways. One is to use a periscope module, which requires a relatively large space and high cost, resulting in an increase in the stacking difficulty and production cost of electronic devices. The other is to achieve zoom by cropping and compensating the captured image through an algorithm. However, the pixels of the images captured by this method are relatively poor.

[0040] Based on this, in the related art, zooming is achieved by setting a driving device, and the driving device can be, for example, a motor. Exemplarily, the driving device includes a supporting portion, a first bearing portion and a second bearing portion provided on the supporting portion. The first bearing portion is used to mount a first lens, and the second bearing portion is used to mount a second lens. The first lens and the second lens are located on the same axis. A focusing component is provided between the second bearing portion and the supporting portion to adjust the relative distance between the second lens and the first lens, thereby achieving optical zoom. At the same time, an adjusting component is also provided on the supporting portion. When the electronic device shakes, the adjusting component adjusts the position of the supporting portion to adjust the optical axis position of the first lens and the second lens, thereby achieving an anti-shake effect.

[0041] However, in the driving device described in the related art, when achieving the anti-shake effect, the supporting portion drives the two lenses to move synchronously, which will result in a poor effect of adjusting the optical axis position, reducing the anti-shake effect of the electronic device and thus affecting the image quality. In addition, the driving device in the related art needs to rely on optical focusing for assembly when assembling with the first lens and the second lens, that is, during assembly, it is necessary to image the first lens and the second lens on the chip, and then assemble the first lens and the second lens when the imaging reaches the preset position. The operation is complex, resulting in a reduction in assembly efficiency.

[0042] To solve the above technical problems, the present disclosure provides a driving device in which a first bearing portion for carrying a first lens and a second bearing portion for carrying a second lens are arranged along the axial direction of the first lens. The position of the first bearing portion is adjusted by a first adjusting component to adjust the optical axis position of the first lens, and the position of the second bearing portion is adjusted by a second adjusting component to adjust the optical axis position of the second lens. In this way, by respectively adjusting the optical axis positions of the first lens and the second lens through the first adjusting component and the second adjusting component, the response speed of adjusting the two optical axis positions can be effectively improved, thereby effectively improving the anti-shake effect, enhancing the image quality of the electronic device, and further enhancing the user experience.

[0043] An exemplary embodiment of the present disclosure provides a driving device, and the driving device can be, for example, a voice coil motor (VCM), a flexible motor or a linear motor, etc. For example Figure 1 in the case where the driving device 1 shown is a VCM, specific limitations are not made in this embodiment, as long as the focusing function and the optical anti-shake function of the camera module can be achieved.

[0044] As Figure 1 、 Figure 2 and Figure 9As shown in the figure, the driving device 1 includes a first bearing part 11, a second bearing part 12, a first adjusting component 14, and a second adjusting component 15. The first bearing part 11 is used for bearing the first lens 21. The second bearing part 12 is arranged along the axial direction of the first lens 21 with the first bearing part 11, and the second bearing part 12 is used for bearing the second lens 22. The first adjusting component 14 can adjust the position of the first bearing part 11. For example, it can adjust the position of the first bearing part 11 in the first direction (such as the x direction shown in Figure 2 ), and the second direction (such as the y direction shown in Figure 2 ). The first bearing part 11 drives the first lens 21 it bears to move, so as to realize the adjustment of the optical axis position of the first lens 21. The second adjusting component 15 is used for adjusting the position of the second bearing part 12. For example, it can adjust the position of the second bearing part 12 in the first direction (such as the x direction shown in Figure 2 ), and the second direction (such as the y direction shown in Figure 2 ). The second bearing part 12 drives the second lens 22 it bears to move, so as to realize the adjustment of the optical axis position of the second lens 22.

[0045] By adjusting the optical axis positions of the first lens 21 and the second lens 22 respectively through the first adjusting component 14 and the second adjusting component 15, when the electronic device shakes, the optical axis positions of at least one of the first lens 21 and the second lens 22 can be adjusted simultaneously. For example, only the optical axis position of the first lens 21 can be adjusted, or only the optical axis position of the second lens 22 can be adjusted. It is also possible to adjust the optical axis positions of the first lens 21 and the second lens 22 respectively at the same time. In this way, the adjustment speed of the two optical axis positions is effectively improved, that is, the response speed of the driving device 1 for adjusting the optical axis position is improved, thereby effectively improving the optical image stabilization effect, enhancing the image quality of the electronic device, and further enhancing the user experience.

[0046] In addition, when the driving device 1 in this embodiment is assembled with the first lens 21 and the second lens 22, only the physical centers of the first lens 21 and the second lens 22 need to be aligned. Then, during the use of the driving device 1, the adjustment and optimization of the optical effect are realized through the first adjusting component 14 and the second adjusting component 15. There is no need for the first lens 21 and the second lens 22 to image on the chip to assist in the assembly, saving the assembly process, and thus effectively improving the assembly efficiency of the camera module 2.

[0047] As shown in Figure 2 and Figure 5As shown, in one embodiment, the driving device 1 further includes a first support portion 13, and the second bearing portion 12 is disposed inside the first support portion 13. A focusing component is disposed between the second bearing portion 12 and the first support portion 13. The focusing component is used to adjust the position of the second bearing portion 12 in the optical axis direction of the second lens 22, so as to adjust the relative distance between the first lens 21 and the second lens 22, thereby realizing the zoom function. The first bearing portion 11 is disposed at the first end of the first support portion 13, and the first adjusting component 14 is disposed between the first support portion 13 and the first bearing portion 11. With such a setting form, while making the structure of the driving device 1 simple and easy to assemble, it also makes the structure of the driving device 1 more compact, reduces the volume of the driving device 1, and thus is beneficial to the miniaturized design of the electronic device.

[0048] Continue to refer to Figure 2 and Figure 5 In one embodiment, the first adjusting component 14 includes a first magnet 141 and a first coil 142. One of the first magnet 141 and the first coil 142 is disposed on the first support portion 13, and the other of the first magnet 141 and the first coil 142 is disposed on the first bearing portion 11. Exemplarily, the first magnet 141 can be disposed on the first support portion 13 and the first coil 142 can be disposed on the first bearing portion 11; alternatively, the first coil 142 can be disposed on the first support portion 13 and the first magnet 141 can be disposed on the first bearing portion 11.

[0049] When the first coil 142 is energized, it can cooperate with the magnetic field of the first magnet 141, and the generated Lorentz force can push the first bearing portion 11 to move in the first direction or the second direction, thereby realizing the adjustment of the optical axis position of the first lens 21. Exemplarily, the first adjusting component 14 can adjust the moving distance of the first bearing portion 11 by changing the magnitude of the current input to the first coil 142, and adjust the moving direction of the first bearing portion 11 by changing the direction of the current, thereby realizing the optical image stabilization function. With such a design, while making the structure of the first adjusting component 14 simple, it can effectively improve the accuracy of adjusting the optical axis position of the first lens 21, thereby further improving the anti-shake effect and enhancing the image quality.

[0050] As Figure 3 and Figure 5As shown, in one embodiment, the driving device 1 further includes a first rolling connection portion disposed between the first bearing portion 11 and the first support portion 13. The first rolling connection portion is used to movably connect the first bearing portion 11 to the first support portion 13. When the first adjustment assembly 14 adjusts the position of the first bearing portion 11, the first rolling connection portion can roll between the first bearing portion 11 and the first support portion 13. With such a setting form, the smoothness of the movement of the first bearing portion 11 relative to the first support portion 13 is effectively improved, thereby further improving the response speed of the driving device 1 for adjusting the position of the optical axis.

[0051] As Figure 2 and Figure 3 shown, in one embodiment, the first bearing portion 11 includes opposite first surface 111 and second surface 112. A first through hole 113 penetrating the first surface 111 and the second surface 112 is provided on the first bearing portion 11, and the first lens 21 is mounted in the first through hole 113. Exemplarily, the first lens 21 can be mounted in the first through hole 113 by means such as gluing. The first through hole 113 is used for the first lens 21 to collect images. A first groove 114 is provided on the second surface 112 of the first bearing portion 11, and a second groove 131 opposite to the first groove 114 is provided on the end surface of the first end of the first support portion 13. The first rolling connection portion includes a first ball 16. Both sides of the first ball 16 are respectively embedded in the first groove 114 and the second groove 131 and can roll in the first groove 114 and the second groove 131. Designed in this way, on the one hand, the structure is simple and convenient for processing. On the other hand, the first groove 114 and the second groove 131 play a role in limiting the first ball 16 to prevent the first ball 16 from falling off and affecting the movement of the first bearing portion 11. At the same time, after the first ball 16 is embedded in the first groove 114 and the second groove 131, it can play a role in limiting the movement of the first bearing portion 11, avoiding the movement range of the first bearing portion 11 being too large and affecting the normal adjustment of the first adjustment assembly 14, thereby effectively improving the reliability of the driving device 1.

[0052] The bottom of the first groove 114 and the bottom of the second groove 131 are both perpendicular to the axis of the first through hole 113. In this way, it is ensured that the first bearing portion 11 can always move in the first direction and the second direction perpendicular to the optical axis direction of the first lens 21 (for example Figure 2 the z direction shown in the figure), thereby improving the focusing effect of the first lens 21.

[0053] As Figure 6As shown, in one embodiment, the first support portion 13 is in a frame shape, and a plurality of first adjustment components 14 are arranged along the circumference of the frame shape. With such a setting form, while improving the support effect of the first support portion 13 on the first bearing portion 11 and thus enhancing the reliability of the driving device 1, the positions of the first bearing portion 11 are adjusted jointly by the plurality of first adjustment components 14, improving the force uniformity of the first bearing portion 11, thereby effectively improving the smoothness when the first bearing portion 11 moves, and further being able to enhance the anti-shake effect and ensuring the quality of the image.

[0054] Continue to refer to Figure 6 , in one embodiment, the first support portion 13 includes four side frames 132 connected in sequence, and each side frame 132 is correspondingly provided with a first adjustment component 14. Along the extending direction of the side frame 132, first balls 16 are arranged at both ends of the first adjustment component 14 on each side frame 132. Exemplarily, the diameters of the first balls 16 can be the same, so that the first bearing portion 11 can always move along a first direction and a second direction perpendicular to the optical axis direction of the first lens 21 (such as the z direction shown in Figure 2 ), thereby improving the focusing effect of the first lens 21. The diameters of the first balls 16 can also be different. In this case, each first ball 16 should be adapted to the depth of the first groove 114 and the depth of the second groove 131 where it is located. For example, when the diameter of the first ball 16 is larger, the depth of the first groove 114 and / or the second groove 131 also deepens; when the diameter of the first ball 16 is smaller, the depth of the first groove 114 and / or the second groove 131 also decreases, so that when the plurality of first balls 16 roll, it can be ensured that the first bearing portion 11 always moves along a first direction and a second direction perpendicular to the optical axis direction of the first lens 21 (such as the z direction shown in Figure 2 ), thereby improving the focusing effect of the first lens 21. With such a design, the smoothness and fluency when the first bearing portion 11 moves are further improved, thereby effectively improving the response speed of the driving device 1 for adjusting the optical axis position.

[0055] Such as Figure 2 and Figure 5As shown, in one embodiment, the driving device 1 further includes a base 18. The base 18 is movably connected to the second end of the first support portion 13. A second through hole 183 for the second lens 22 to expose is provided on the base 18. The second adjustment assembly 15 is disposed between the base 18 and the first support portion 13. The second adjustment assembly 15 adjusts the position of the first support portion 13 in the first direction and the second direction. The first support portion 13 drives the second carrier portion 12 and the second lens 22 carried thereon to move, so as to realize the adjustment of the optical axis position of the second lens 22. At this time, since the first end of the first support portion 13 is movably connected to the first carrier portion 11, when the optical axis position of the second lens 22 is adjusted by the second adjustment assembly 15, the first carrier portion 11 can remain relatively stationary. With such a design, the structure of the driving device 1 is simple and convenient for assembly. At the same time, the structure of the driving device 1 is more compact, reducing the volume of the driving device 1, which is beneficial to the miniaturized design of the electronic device.

[0056] Continue to refer to Figure 2 and Figure 5 , in one embodiment, the second adjustment assembly 15 includes a second magnet 151 and a second coil 152. One of the second magnet 151 and the second coil 152 is disposed on the first support portion 13, and the other of the second magnet 151 and the second coil 152 is disposed on the base 18. Exemplarily, the second magnet 151 can be disposed on the first support portion 13 and the second coil 152 can be disposed on the base 18; or the second coil 152 can be disposed on the first support portion 13 and the second magnet 151 can be disposed on the base 18.

[0057] When the second coil 152 is energized, it can cooperate with the magnetic field of the second magnet 151, and the generated Lorentz force can push the first support portion 13 to move in the first direction or the second direction, so as to drive the second carrier portion 12 to move to realize the adjustment of the optical axis position of the second lens 22. Exemplarily, the second adjustment assembly 15 can adjust the moving distance of the first support portion 13 by changing the magnitude of the current input to the second coil 152, and adjust the moving direction of the first support portion 13 by changing the direction of the current, so as to realize the optical image stabilization function. With such a design, while the structure of the second adjustment assembly 15 is simple, it can effectively improve the accuracy of adjusting the optical axis position of the second lens 22, further improving the anti-shake effect and enhancing the quality of the image.

[0058] As Figure 3 and Figure 5As shown, in one embodiment, the driving device 1 further includes a second rolling connection portion disposed between the first support portion 13 and the base 18. The second rolling connection portion is used to movably connect the first support portion 13 to the base 18. When the second adjustment assembly 15 adjusts the position of the first support portion 13, the second rolling connection portion can roll between the first support portion 13 and the base 18. With such a setting form, the smoothness of the movement of the first support portion 13 relative to the base 18 is effectively improved, thereby further improving the response speed of the driving device 1 for adjusting the position of the optical axis.

[0059] As Figure 2 and Figure 3 shown, in one embodiment, the base 18 includes opposite third surface 181 and fourth surface 182, and the second through hole 183 penetrates through the third surface 181 and the fourth surface 182. A third groove 184 is provided on the third surface 181 of the base 18, and a fourth groove 134 opposite to the third groove 184 is provided on the end surface of the second end of the first support portion 13. The second rolling connection portion includes a second ball 17. Two sides of the second ball 17 are respectively embedded in the third groove 184 and the fourth groove 134 and can roll in the third groove 184 and the fourth groove 134. Designed in this way, on the one hand, the structure is simple and easy to process. On the other hand, the third groove 184 and the fourth groove 134 play a role in limiting the second ball 17 to prevent the second ball 17 from falling off and affecting the movement of the first support portion 13. At the same time, after the second ball 17 is embedded in the third groove 184 and the fourth groove 134, it can play a role in limiting the movement of the first support portion 13 to prevent the movement range of the first support portion 13 from being too large and affecting the normal adjustment of the second adjustment assembly 15, thereby effectively improving the reliability of the driving device 1.

[0060] The bottom of the third groove 184 and the bottom of the fourth groove 134 are both perpendicular to the axis of the second through hole 183. In this way, it is ensured that the first support portion 13 can always move in a first direction and a second direction perpendicular to the optical axis direction of the second lens 22 (for example Figure 2 the z direction shown in), thereby improving the focusing effect of the second lens 22.

[0061] As Figure 5 shown, in one embodiment, the base 18 is in a frame shape adapted to the first support portion 13, and a second ball 17 is provided at each of the four inner corners of the end surface of the base 18 facing the first support portion 13. Exemplarily, the diameters of the second balls 17 can be the same, and further, the first support portion 13 can always move in a first direction and a second direction perpendicular to the optical axis direction of the second lens 22 (for example Figure 2The first direction and the second direction perpendicular to the z-direction (shown in []) move, thereby improving the focusing effect of the second lens 22. The diameters of the second balls 17 may also be different. In this case, each second ball 16 should be adapted to the depth of the third groove 184 and the depth of the fourth groove 134 where it is located. For example, when the diameter of the second ball 17 is larger, the depth of the third groove 184 and / or the fourth groove 134 also deepens; when the diameter of the second ball 17 is smaller, the depth of the third groove 184 and / or the fourth groove 134 also decreases, so that when the plurality of second balls 17 roll, it can be ensured that the first support portion 13 always moves in the first direction and the second direction perpendicular to the optical axis direction of the second lens 22 (such as the z-direction shown in []) Figure 2 The first direction and the second direction perpendicular to the z-direction (shown in []) move, thereby improving the focusing effect of the second lens 22.

[0062] The first support portion 13 includes four side plates 133 connected in sequence. Each side plate 133 is located between adjacent inner corners. One of the second magnets 151 and the second coils 152 is correspondingly arranged on each side plate 133, and the other of the second magnets 151 and the second coils 152 is correspondingly arranged in the area of the base 18 opposite to each side plate 133. Designed in this way, on the one hand, while improving the support effect on the first support portion 13 and thus improving the reliability of the driving device 1, the position of the first support portion 13 is adjusted by a plurality of second adjustment components 15 together, improving the force uniformity of the first support portion 13, thereby effectively improving the smoothness when the first support portion 13 moves, and further improving the anti-shake effect and ensuring the image quality. On the other hand, by providing a plurality of second balls 17, the smoothness and fluency when the first support portion 13 moves are further improved, thereby effectively improving the response speed of the driving device 1 for adjusting the optical axis position.

[0063] Continue to refer to Figure 5 , in one embodiment, the driving device 1 further includes a cover plate 185. The cover plate 185 is covered on the base 18 and is provided with a third through hole adapted to the second through hole 183. When the second coil 152 is arranged on the base 18, the third coil 19 is embedded in the cover plate 185. Designed in this way, the convenience of assembling the driving device 1 can be effectively improved.

[0064] As Figure 2 and Figure 5As shown, in one embodiment, the second magnet 151 is disposed on the first support portion 13, and the second coil 152 is disposed on the base 18. The focusing assembly includes a third coil 19 disposed on the second bearing portion 12. The third coil 19 cooperates with the second magnet 151 to achieve position adjustment of the second bearing portion 12 in the optical axis direction of the second lens 22. When the third coil 19 is energized, it can cooperate with the magnetic field of the second magnet 151, and the generated Lorentz force can then push the second bearing portion 12 to move in the third direction (e.g., Figure 2 the z direction shown in

[0065] ), that is, the optical axis direction of the second lens 22, to adjust the relative distance between the second lens 22 and the second lens 22, thereby achieving the zoom function. Exemplarily, the moving distance of the second bearing portion 12 can be adjusted by changing the magnitude of the current input to the third coil 19, and the moving direction of the second bearing portion 12 can be adjusted by changing the direction of the current, so as to achieve the zoom of the camera module 2. By making the third coil 19 cooperate with the second magnet 151 of the second adjustment assembly 15, the use of magnets is saved, which not only enables the structure of the driving device 1 to be more compact, thus facilitating the miniaturization design of the electronic device, but also effectively reduces the weight of the driving device 1, thus facilitating the lightweight design of the electronic device. Figure 2 and Figure 5 , in one embodiment, the third coil 19 surrounds the outside of the second bearing portion 12. In this way, the cooperation between one third coil 19 and a plurality of second magnets 151 on the first support portion 13 can be achieved, facilitating the setting of the third coil 19, and thus effectively improving the assembly efficiency of the driving device 1.

[0066] As Figure 4 shown, in one embodiment, the driving device 1 further includes a housing 10. The housing 10 includes a top wall 101 opposite to the first bearing portion 11 and a side wall 102 disposed around the top wall 101. A fourth through hole for the first lens 21 to expose is provided on the top wall 101 to facilitate the first lens 21 to capture an image. A limiting post 103 is provided on the inner surface of the top wall 101, and a limiting groove 115 is provided on the first surface 111 of the first bearing portion 11 opposite to the top wall 101. The limiting post 103 abuts against the bottom surface of the limiting groove 115, and the side wall 102 is fixedly connected to the base 18. While fixing the housing 10, the movement of the first bearing portion 11 in the third direction is restricted, avoiding the movement of the first bearing portion 11 in the third direction when adjusting the movement of the second bearing portion 12 from affecting the focusing effect, thereby effectively improving the accuracy and efficiency of focusing. A preset gap is provided between the side surface of the limiting post 103 and the limiting groove 115, and the preset gap is adapted to the movement range of the first bearing portion 11. With such a design, it is avoided that the cooperation between the limiting post 103 and the limiting groove 115 restricts the position adjustment of the first bearing portion 11 in the first and second directions, thereby further improving the anti-shake effect.

[0067] Continue to refer to Figure 4 In one embodiment, there is also the above-mentioned preset gap between each side wall 102 of the housing 10 and the first support portion 13 and the first bearing portion 11. With such a design, space is provided for the position adjustment of the first support portion 13 and the first bearing portion 11 in the first direction and the second direction, avoiding the side wall 102 of the housing 10 from restricting the movement of the first bearing portion 11 and the first support portion 13, thereby further improving the anti-shake effect.

[0068] As Figure 5 shown, in one embodiment, both ends of the second bearing portion 12 are respectively connected to the first support portion 13 through elastic connection members 121. With such a design, on the one hand, the stability of the second bearing portion 12 when disposed on the first support portion 13 is effectively improved, thereby improving the reliability of the driving device 1. On the other hand, the second bearing portion 12 is connected to the first support portion 13 through the elastic connection member 121, facilitating the movement of the second bearing portion 12 in the third direction. When the focusing assembly adjusts the movement of the second bearing portion 12, the elastic connection member 121 undergoes elastic deformation to provide space for the focusing assembly to adjust the position of the second bearing portion 12. In this way, the setting of the second bearing portion 12 is simple and convenient for processing and assembly.

[0069] As Figure 7 shown, in one embodiment, the elastic connection member 121 includes a first riveting portion 1211 riveted to the second bearing portion 12, a second riveting portion 1212 riveted to the first support portion 13, and an elastic connection portion 1213 connecting the first riveting portion 1211 and the second riveting portion 1212. The first riveting portion 1211 can be fixed to the second bearing portion 12 by, for example, a thermal riveting process, and the second riveting portion 1212 can also be fixed to the first support portion 13 by, for example, a thermal riveting process. In this way, the second bearing portion 12 is assembled on the first support portion 13, the assembly steps are simple, and the stability of the second bearing portion 12 when disposed on the first support portion 13 can be effectively ensured. The elastic connection portion 1213 has a circuitously bent strip structure. With such a setting form, the degree of elastic deformation of the elastic connection portion 1213 can be effectively improved, thereby providing a larger movement space for the movement of the second bearing portion 12 in the third direction, and further effectively improving the focusing effect.

[0070] In one embodiment, the assembly process of the driving device 1 is as follows:

[0071] The first step: Place the base 18 in a dedicated assembly jig, bond the second coil 152 to the base 18 with glue and connect it through solder ball welding, and bond the cover plate 185 to the base 18 with glue.

[0072] Step 2: Place the second bearing part 12 in a dedicated assembly jig, and fix the two elastic connecting pieces 121 to both ends of the second bearing part 12 respectively through a hot riveting process. Then transfer it to another dedicated assembly jig for assembly to the first support part 13, and complete the assembly between the first support part 13, the second bearing part 12, and the various structures assembled on the second bearing part 12 through hot riveting and welding processes.

[0073] Step 3: Assemble the second ball 17 on the base 18 completed in the first step, and then assemble the structure completed in the second step on the base 18. Assemble the first coil 142 and the first bearing part 11 on the first support part 13.

[0074] Step 4: Assemble the housing 10 on the structure completed in the third step and apply sealant to complete the assembly of the driving device 1.

[0075] An exemplary embodiment of the present disclosure provides a camera module, as Figure 8 shown, the camera module 2 includes the driving device 1 as described above, as Figure 9 and Figure 10 shown, the camera module 2 further includes a first lens 21 and a second lens 22. As Figure 2 and Figure 5 shown, the driving device 1 includes a first bearing part 11, a second bearing part 12, a first adjustment component 14, and a second adjustment component 15. The first lens 21 is installed on the first bearing part 11 of the driving device 1. Exemplarily, the first lens 21 can be installed on the first bearing part 11 through a first adhesive layer 27. The second bearing part 12 and the first bearing part 11 are arranged along the axial direction of the first lens 21, and the second lens 22 is installed on the second bearing part 12 of the driving device 1. Exemplarily, the second lens 22 can be installed on the second bearing part 12 through a second adhesive layer 28.

[0076] The first adjustment component 14 can adjust the position of the first bearing part 11, for example, adjust the position of the first bearing part 11 in the first direction (such as Figure 2 the x - direction shown in Figure 2 ) and the second direction (such as Figure 2 the y - direction shown in Figure 2 ). The first bearing part 11 drives the first lens 21 carried by it to move, so as to adjust the optical axis position of the first lens 21. The second adjustment component 15 is used to adjust the position of the second bearing part 12, for example, adjust the position of the second bearing part 12 in the first direction (such as Figure 2 the x - direction shown in Figure 2 ) and the second direction (such as Figure 2 the x - direction shown in Figure 2 ). The second bearing part 12 drives the second lens 22 carried by it to move, so as to adjust the optical axis position of the second lens 22.

[0077] The optical axis positions of the first lens 21 and the second lens 22 are respectively adjusted by the first adjustment component 14 and the second adjustment component 15. When the electronic device shakes, the optical axis positions of at least one of the first lens 21 and the second lens 22 can be adjusted simultaneously. For example, only the optical axis position of the first lens 21 can be adjusted, or only the optical axis position of the second lens 22 can be adjusted. It is also possible to adjust the optical axis positions of the first lens 21 and the second lens 22 respectively at the same time. In this way, the adjustment speed of the two optical axis positions is effectively improved, that is, the response speed of the driving device 1 for adjusting the optical axis position is improved, thereby effectively improving the anti-shake effect, enhancing the image quality of the electronic device, and further enhancing the user experience.

[0078] In addition, when the driving device 1 is assembled with the first lens 21 and the second lens 22, only the physical centers of the first lens 21 and the second lens 22 need to be aligned. Then, during the use of the driving device 1, the first adjustment component 14 and the second adjustment component 15 are used to achieve the adjustment and optimization of the optical effect, without the need for the first lens 21 and the second lens 22 to image on the chip to assist in the assembly, saving the assembly process, thereby effectively improving the assembly efficiency of the camera module 2.

[0079] As Figure 10 shown, in one embodiment, along the light incident direction of the first lens 21, the camera module 2 further includes an adjustment adhesive layer 23, a filter 24, a second support portion 25, and a circuit board 26 arranged in sequence. The adjustment adhesive layer 23 is disposed on the fourth surface 182 of the base 18. The second support portion 25 is used to mount the filter 24. An installation groove may be provided on the second support portion 25, and the filter 24 is disposed in the installation groove. The side of the second support portion 25 facing away from the driving device 1 is connected to the circuit board 26. The filter 24 is an optical material for filtering out certain wavelength components in the incident light. Exemplarily, the filter 24 is an IR filter 24, which is used to filter out infrared rays in the incident light, thereby improving the imaging quality and clarity of the camera module 2. The circuit board 26 is provided with a photosensitive chip. In the camera module 2, the photosensitive chip is used to convert light into an electrical signal, so that the digital signal processor can analyze and process the optical signal.

[0080] In one embodiment, the assembly process of the camera module 2 is as follows:

[0081] The first step: Invert the driving device 1 into a dedicated assembly jig, and the surfaces of the second support portion 25 and the driving device 1 are attached to the surface of the assembly jig. The image recognition technology is used to find the four marking points and notch positions of the second lens 22 to determine the fixed angle between the second lens 22 and the driving device 1, and the relative position between the second lens 22 and the driving device 1 is determined through a height fixing jig.

[0082] Step 2: Place the driving device 1 and the first lens 21 assembled with the second lens 22 in the first step on a dedicated assembly jig. Fix the second lens 22 at a certain fixed position on the jig. Then, align four laser height sensors with four marked points on the surface of the second lens 22, and adjust through four height values to ensure that the position of the second lens 22 is horizontal. At the same time, grab the outer ring features on the surface of the second lens 22 to determine the center position.

[0083] Grab the outer surface of the first lens 21 with a robotic arm, measure four positioning points on the first lens 21 with four laser height sensors, and adjust it to be horizontal in the same way as the second lens 22. Then, grab the center and the position of the notch of the first lens 21 through image recognition, and adjust the rotation angle of the first lens 21 through the position of the notch to ensure that the first lens 21 and the second lens 22 are always at the same angle after assembly.

[0084] Among them, before assembling the first lens 21, the computer program determines the installation position of the first lens 21 through the four height points of the second lens 22 measured, and ensures the center consistency of the first lens 21 and the second lens 22 through the grabbed center positions of the first lens 21 and the second lens 22. After determining the positions of the first lens 21 and the second lens 22, assemble the first lens 21 by gluing and cure it. Subsequently, perform laser height measurement on the first lens 21 to check whether the assembled position meets the specifications.

[0085] Step 3: Adjust the assembled first lens 21, second lens 22, and driving device 1 on an automated assembly machine platform. There are significant differences in the adjustment between the camera module 2 of the present disclosure and the conventional module. The height deviation of the fixed height position of the conventional module is x millimeters, and the thickness of the adjustment adhesive layer 23 is also x millimeters accordingly. However, for the camera module 2 of the present disclosure, the entire optical system is realized by moving the lenses. Due to optical factors, a distance deviation of x millimeters between the first lens 21 and the second lens 22 will cause the influence on the thickness of the adjustment adhesive layer 23 to be magnified by n times (assuming the camera module 2 is an n - fold zoom). Therefore, a special compensation method is adopted in the assembly process of this embodiment. The mechanical structure of the driving device 1 may cause its focusing accuracy to deviate too much. According to the special optical properties of the camera module 2 of the present disclosure embodiment, it is necessary to compensate for the focusing tolerance of the driving device 1 on the automated assembly base platform. Therefore, after focusing is completed on the automated assembly machine platform, the position of the second lens 22 is adjusted again. This measure compensates for the optical field curvature and also optimizes the thickness of the adjustment adhesive layer 23.

[0086] Step 4: Bake and cure the assembled camera module 2 at high temperature, and then perform soldering on the pins of the driving device 1 and back - end testing.

[0087] An exemplary embodiment of the present disclosure provides an electronic device, which can be, for example, a mobile device such as a mobile phone, a tablet computer, a laptop computer, a handheld computer, a vehicle-mounted electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA), or can also be a non-mobile device such as a personal computer (PC), a television (TV), a teller machine, or a self-service machine, etc.

[0088] The electronic device includes the camera module 2 as described above. As Figure 9 and Figure 10 shown, the camera module 2 includes the driving device 1, the first lens 21, and the second lens 22 as described above. As Figure 2 and Figure 5 shown, the driving device 1 includes a first carrier part 11, a second carrier part 12, a first adjustment component 14, and a second adjustment component 15. The first lens 21 is mounted on the first carrier part 11 of the driving device 1. The second carrier part 12 and the first carrier part 11 are arranged along the axial direction of the first lens 21. The second lens 22 is mounted on the second carrier part 12 of the driving device 1. The first adjustment component 14 can adjust the position of the first carrier part 11, for example, adjust the position of the first carrier part 11 in the first direction (such as the x direction shown in Figure 2 ) and the second direction (such as the y direction shown in Figure 2 ). The first carrier part 11 drives the first lens 21 carried by it to move, so as to realize the adjustment of the optical axis position of the first lens 21. The second adjustment component 15 is used to adjust the position of the second carrier part 12, for example, adjust the position of the second carrier part 12 in the first direction (such as the x direction shown in Figure 2 ) and the second direction (such as the y direction shown in Figure 2 ). The second carrier part 12 drives the second lens 22 carried by it to move, so as to realize the adjustment of the optical axis position of the second lens 22.

[0089] The optical axis positions of the first lens 21 and the second lens 22 are respectively adjusted by the first adjustment component 14 and the second adjustment component 15. When the electronic device shakes, the optical axis positions of at least one of the first lens 21 and the second lens 22 can be adjusted simultaneously. For example, only the optical axis position of the first lens 21 can be adjusted, or only the optical axis position of the second lens 22 can be adjusted. It is also possible to adjust the optical axis positions of the first lens 21 and the second lens 22 respectively at the same time. In this way, the adjustment speed of the two optical axis positions is effectively improved, that is, the response speed of the driving device 1 for adjusting the optical axis position is improved, thereby effectively improving the anti-shake effect, enhancing the image quality of the electronic device, and further enhancing the user experience.

[0090] In addition, when the driving device 1 is assembled with the first lens 21 and the second lens 22, only the physical centers of the first lens 21 and the second lens 22 need to be aligned. Then, during the use of the driving device 1, the adjustment and optimization of the optical effect are achieved through the first adjustment component 14 and the second adjustment component 15, without the need for the first lens 21 and the second lens 22 to image on the chip to assist in the assembly, saving the assembly process, thereby effectively improving the assembly efficiency of the camera module 2.

[0091] Those skilled in the art will readily think of other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application aims to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common general knowledge or conventional technical means in the technical field not disclosed in the present disclosure. The specification and embodiments are only regarded as exemplary, and the true scope and spirit of the present disclosure are pointed out by the following claims.

[0092] It should be understood that the present disclosure is not limited to the exact structures already described and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. A driving device, characterized in that, comprising: a first bearing part for bearing a first lens; a second bearing part arranged axially along the first lens with the first bearing part, the second bearing part for bearing a second lens; a first adjusting component for adjusting the position of the first bearing part to adjust the optical axis position of the first lens; a second adjusting component for adjusting the position of the second bearing part to adjust the optical axis position of the second lens.

2. The driving device according to claim 1, characterized in that, the driving device further comprises: a first supporting part, the second bearing part is arranged in the first supporting part, and a focusing component is arranged between the second bearing part and the first supporting part, the focusing component for adjusting the position of the second bearing part in the optical axis direction of the second lens; the first bearing part is arranged at the first end of the first supporting part, and the first adjusting component is arranged between the first supporting part and the first bearing part.

3. The driving device according to claim 2, characterized in that, the first adjusting component includes a first magnet and a first coil, one of the first magnet and the first coil is arranged on the first supporting part, and the other of the first magnet and the first coil is arranged on the first bearing part.

4. The driving device according to claim 2, characterized in that, the driving device further comprises: a first rolling connection part arranged between the first bearing part and the first supporting part, the first rolling connection part for movably connecting the first bearing part to the first supporting part.

5. The driving device according to claim 4, characterized in that, the first bearing part includes an opposite first surface and a second surface, a first through hole penetrating the first surface and the second surface is arranged on the first bearing part, and the first lens is installed in the first through hole; a first groove is arranged on the second surface of the first bearing part, a second groove opposite to the first groove is arranged on the end surface of the first end of the first supporting part, the first rolling connection part includes a first ball, and both sides of the first ball are respectively embedded in the first groove and the second groove and can roll in the first groove and the second groove; the bottom of the first groove and the bottom of the second groove are both perpendicular to the axis of the first through hole.

6. The driving device according to claim 4, characterized in that, the first supporting part is in a frame shape, and a plurality of the first adjusting components are arranged along the circumference of the frame shape.

7. The driving device according to claim 6, characterized in that, the first supporting part includes four side frames connected in sequence, and each side frame is correspondingly provided with a first adjusting component. Along the extending direction of the side frame, first balls are arranged at both ends of the first adjusting component.

8. The driving device according to claim 2, characterized in that, the driving device further comprises: A base, the base is movably connected to the second end of the first support portion, and a second through hole for exposing the second lens is provided on the base; The second adjustment component is disposed between the base and the first support portion.

9. The driving device according to claim 8, Characterized in that The second adjustment component includes a second magnet and a second coil, one of the second magnet and the second coil is disposed on the first support portion, and the other of the second magnet and the second coil is disposed on the base.

10. The driving device according to claim 8, Characterized in that The driving device further includes: A second rolling connection portion is disposed between the first support portion and the base, and the second rolling connection portion is used to movably connect the first support portion to the base.

11. The driving device according to claim 10, Characterized in that The base includes an opposite third surface and a fourth surface, and the second through hole penetrates through the third surface and the fourth surface; A third groove is provided on the third surface of the base, and a fourth groove opposite to the third groove is provided on the end surface of the second end of the first support portion. The second rolling connection portion includes a second ball, and both sides of the second ball are respectively embedded in the third groove and the fourth groove and can roll in the third groove and the fourth groove; The bottom of the third groove and the bottom of the fourth groove are both perpendicular to the axis of the second through hole.

12. The driving device according to claim 9, Characterized in that The second magnet is disposed on the first support portion, and the second coil is disposed on the base; The focusing component includes a third coil disposed on the second bearing portion, and the third coil cooperates with the second magnet to realize the position adjustment of the second bearing portion in the optical axis direction of the second lens.

13. The driving device according to claim 8, Characterized in that The driving device further includes: A housing, the housing includes a top wall opposite to the first bearing portion and a side wall surrounding the top wall. A limiting post is provided on the inner surface of the top wall, and a limiting groove is provided on the first surface of the first bearing portion opposite to the top wall. The limiting post abuts against the bottom surface of the limiting groove, and a preset gap is provided between the limiting post and the side surface of the limiting groove. The side wall is fixedly connected to the base.

14. The driving device according to claim 2, Characterized in that Both ends of the second bearing portion are respectively connected to the first support portion through elastic connecting members.

15. The driving device according to claim 14, Characterized in that The elastic connecting member includes a first riveting portion riveted to the second bearing portion, a second riveting portion riveted to the first support portion, and an elastic connecting portion connecting the first riveting portion and the second riveting portion. The elastic connecting portion has a circuitously bent strip structure.

16. A camera module, Characterized in that The camera module includes the driving device according to any one of claims 1 to 15. The camera module further includes a first lens and a second lens. The first lens is mounted on a first bearing portion of the driving device, and the second lens is mounted on a second bearing portion of the driving device.

17. An electronic device, characterized in that, the electronic device includes the camera module according to claim 16.

Images