Lens module and electronic device

Abstract

The present application discloses a lens module and an electronic device, belonging to the field of communication devices. The lens module includes a base, a lens, a photosensitive chip, a mounting seat, and a driving mechanism. The lens is mounted on the base, the photosensitive chip is fixed to the mounting seat, and the photosensitive chip is disposed on the light-emitting side of the lens. The mounting seat is movably disposed relative to the base. The driving mechanism includes a first straight wire segment, a second straight wire segment, and a magnet. The first straight wire segment extends along a first direction perpendicular to the optical axis of the lens, the second straight wire segment extends along a second direction perpendicular to the first direction, the magnet is located on the same side of the first straight wire segment and the second straight wire segment, and both the first straight wire segment and the second straight wire segment are located in the magnetic field of the magnet. The driving mechanism is used to drive the mounting seat to move relative to the base along the first direction and / or the second direction.

Description

Technical Field

[0001] This application belongs to the technical field of communication devices, and particularly relates to a lens module and an electronic device. Background Art

[0002] With the development of technology, the imaging ability of electronic devices has gradually become a major function for enhancing the user experience. Anti-shake is an important ability of the imaging part in electronic devices. Currently, a focusing motor and other mechanical components are usually connected to the photosensitive chip in the lens module. During the shaking of the electronic device, the focusing motor is used to translate the photosensitive chip in the opposite direction to achieve the purpose of anti-shake. However, in this anti-shake structure, the focusing motor is prone to damage, has a relatively short service life, and due to the limitation of its own working principle, the anti-shake accuracy of the focusing motor is relatively low. Summary of the Invention

[0003] The purpose of the embodiments of this application is to provide a lens module and an electronic device to solve the problems that the focusing motor used for anti-shake in current electronic devices has a relatively short service life and relatively low anti-shake accuracy.

[0004] In a first aspect, the embodiments of this application disclose a lens module, which includes a base, a lens, a photosensitive chip, a mounting seat, and a driving mechanism. Among them,

[0005] The lens is mounted on the base, the photosensitive chip is fixed to the mounting seat, and the photosensitive chip is disposed on the light-emitting side of the lens. The mounting seat is movably disposed relative to the base;

[0006] The driving mechanism includes a first straight wire segment, a second straight wire segment, and a magnet. The first straight wire segment extends along a first direction perpendicular to the optical axis of the lens, the second straight wire segment extends along a second direction perpendicular to the first direction, the magnet is located on the same side of the first straight wire segment and the second straight wire segment, and both the first straight wire segment and the second straight wire segment are located in the magnetic field of the magnet. The driving mechanism is used to drive the mounting seat to move relative to the base along the first direction and / or the second direction.

[0007] In a second aspect, the embodiments of this application disclose an electronic device, which includes the above lens module.

[0008] An embodiment of the present application discloses a lens module, in which a lens is mounted on a base, and a photosensitive chip is mounted on a mounting seat. The mounting seat is movably arranged relative to the base, and the mounting seat can move relative to the base through a driving mechanism. In the driving mechanism, a first straight wire segment and a second straight wire segment are perpendicularly arranged, and both are perpendicular to the optical axis direction of the lens. The first straight wire segment and the second straight wire segment are both located in the magnetic field of a magnet. Therefore, when the first straight wire segment and / or the second straight wire segment is energized, the mounting seat can be driven to move relative to the base along the extension direction of the first straight wire segment (i.e., the first direction) and / or the extension direction of the second straight wire segment (i.e., the second direction), so that the lens module has an anti-shake function. Moreover, in the above lens module, the devices for enhancing the anti-shake effect are the wire and the magnet. The service lives of both are relatively long, and there is basically no contact relationship between them, which can prevent the friction between the devices from affecting the anti-shake accuracy and ensure that the lens module has a high anti-shake accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The schematic embodiments and descriptions thereof of the present application are used to explain the present application, and do not constitute an improper limitation to the present application. In the drawings:

[0010] Figure 1 is a schematic structural diagram of the lens module disclosed in the embodiment of the present application;

[0011] Figure 2 and 3 is a schematic diagram of a partial structure in the lens module disclosed in the embodiment of the present application;

[0012] Figure 4 is a schematic structural diagram of the driving mechanism in the lens module disclosed in the embodiment of the present application.

[0013] DESCRIPTION OF THE REFERENCE NUMERALS:

[0014] 110 - housing, 120 - base, 130 - bottom plate,

[0015] 310 - lens, 320 - photosensitive chip, 330 - mounting seat, 340 - connector, 350 - multi-curved prism, 360 - infrared filter,

[0016] 500 - driving mechanism, 510 - first coil, 511 - first straight wire segment, 512 - fourth straight wire segment, 520 - second coil, 521 - second straight wire segment, 522 - fifth straight wire segment, 530 - third coil, 531 - third straight wire segment, 532 - sixth straight wire segment, 540 - magnet,

[0017] 700 - Flexible circuit board, 710 - Limiting part, 711 - First connection section, 712 - Deformation section, 712a - Through long hole, 713 - Second connection section, 720 - Connection part. Detailed implementation mode

[0018] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application.

[0019] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are usually of the same type, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means an "or" relationship between the associated objects before and after.

[0020] Next, in conjunction with the accompanying drawings, the electronic device provided by the embodiments of the present application will be described in detail through specific embodiments and their application scenarios.

[0021] As Figures 1 to 4 shown, an embodiment of the present application discloses a lens module, which can be applied in an electronic device to provide an imaging function for the electronic device. The lens module includes a base 120, a lens 310, a photosensitive chip 320, a mounting seat 330, and a driving mechanism 500.

[0022] Among them, the base 120 is a device in the lens module that provides an installation basis function. It can be formed of hard materials such as metal or plastic to provide a stable installation function for other devices. The specific shape, size and other parameters of the base 120 can be determined according to the actual situation. Considering that the lens 310 is usually a circular structure and the photosensitive chip 320 is usually a rectangular structure, in order to facilitate the installation of other devices in the lens module to the base 120, the base 120 can be a rectangular structure as a whole. And in order to ensure that the base 120 does not interfere with the photosensitive work of the photosensitive chip 320, the base 120 can be a through structure, so that the light incident from one side of the base 120 can enter the photosensitive chip 320.

[0023] The lens 310 is used to provide light distribution. The lens 310 can generally be formed of materials such as glass or resin. The size of the lens 310 can be selected corresponding to the photosensitive area of the photosensitive chip 320. The number of the lenses 310 can be one. In order to improve the imaging effect of the lens module, the number of the lenses 310 can be multiple. The multiple lenses 310 are distributed in a straight line, and the optical axes of the multiple lenses 310 are on the same straight line. The multiple lenses 310 can include at least one convex lens and at least one concave lens. Of course, the multiple lenses 310 can also include other types of optical devices, which are not limited herein. During the assembly of the lens module, the lens 310 is mounted on the base 120. Specifically, the lens 310 can be fixedly connected to the base 120, or alternatively, a zoom device such as a voice coil motor can be used to enable the lens 310 to move relative to the base 120 to provide a zoom function and improve the applicable range of the lens module.

[0024] The photosensitive chip 320 is used to provide imaging. It can convert an optical image into an electrical signal, and after analog-to-digital conversion, convert the electrical signal into a digital signal. After being processed by digital signal processing technology and then processed by the processor of the electronic device, it can be converted into an image that can be displayed on the display screen of the electronic device.

[0025] The mounting seat 330 is a device used to provide a mounting basis for the photosensitive chip 320, and can also be a medium for other devices to form a connection relationship with the photosensitive chip 320, preventing other devices from being directly connected to the photosensitive chip 320, which may have an adverse impact on the performance and service life of the photosensitive chip 320. For this reason, the mounting seat 330 can be a structure made of a hard material such as plastic or metal, and the mounting seat 330 can have a mounting plane, and enable the photosensitive chip 320 to be relatively reliably fixed on the mounting plane of the mounting seat 330. Specifically, the photosensitive chip 320 can be fixedly connected to the base 120 by means of bonding or the like. And, the photosensitive chip 320 is located on the light-emitting side of the lens 310, so that the light emitted from the lens 310 can be incident on the photosensitive chip 320 for imaging.

[0026] In addition, the lens module may further include components such as a circuit board. The circuit board is used to supply power to components such as the photosensitive chip 320, and can also serve as a support component for the photosensitive chip 320 and the mounting base 330. Specifically, the circuit board may be a flexible circuit board 700. By providing flexible circuit boards 700 on both opposite sides of the mounting base 330 and extending the flexible circuit boards 700 in the direction of the lens 310, when each flexible circuit board 700 is connected to both the base 120 and the mounting base 330, the flexible circuit board 700 has an anti-bending effect in its own length direction, providing a support function for the relatively light-weight mounting base 330 and photosensitive chip 320, so that the photosensitive chip 320 is "suspended", thereby ensuring that both the photosensitive chip 320 and the mounting base 330 are movably arranged relative to the base 120. Furthermore, by changing the relative position between the photosensitive chip 320 and the lens 310, an anti-shake effect can be achieved. Correspondingly, the photosensitive chip 320 can be electrically connected to the flexible circuit board 700, and the flexible circuit board 700 can supply power to the photosensitive chip 320. Of course, in order to further improve the mounting stability of the photosensitive chip 320, in another embodiment of the present application, the photosensitive chip 320 and the base 120 can also be connected by an elastic connection member, providing a support function for the photosensitive chip 320 while not restricting the relative movement between the photosensitive chip 320 and the base 120.

[0027] As <( Figure 4 shown, the driving mechanism 500 includes a first straight wire segment 511, a second straight wire segment 521, and a magnet 540. The first straight wire segment 511 extends in a first direction perpendicular to the optical axis of the lens 310, the second straight wire segment 521 extends in a second direction, and the first direction and the second direction are perpendicular to each other, that is, the first straight wire segment 511 and the second straight wire segment 521 are perpendicular to each other, and the plane formed by the two is perpendicular to the optical axis of the lens 310. At the same time, the magnet 540 can provide a magnetic field, and the magnet 540 is located on the same side of the first straight wire segment 511 and the second straight wire segment 521, so that both the first straight wire segment 511 and the second straight wire segment 521 are located in the magnetic field of the magnet 540. Thus, when the first straight wire segment 511 and the second straight wire segment 521 are energized, the first straight wire segment 511 and the second straight wire segment 521 can move in the magnetic field to provide a driving force, so that the driving mechanism 500 can drive the mounting base 330 to move relative to the base 120 in the first direction and / or the second direction.

[0028] Specifically, in the driving mechanism 500, the magnet 540 is used to provide a magnetic field, and currents can be passed through both the first straight wire segment 511 and the second straight wire segment 521. Therefore, there is an interaction relationship between the first straight wire segment 511 and the second straight wire segment 521 and the magnet 540. Furthermore, during the assembly of the lens module, the first straight wire segment 511 and the second straight wire segment 521 can be regarded as a whole, and one of them can be made to form a relatively fixed relationship with the mounting base 330 or the base 120. At the same time, the magnet 540 can be made to form a relatively fixed relationship with the other of the mounting base 330 and the base 120, ensuring that at least one of the first straight wire segment 511 and the second straight wire segment 521 can move in the magnetic field generated by the magnet 540 when energized, and drive the mounting base 330 to move relative to the base 120.

[0029] More specifically, the magnet 540 can provide a magnetic field acting force on the first straight wire segment 511 and the second straight wire segment 521 along the direction of the optical axis of the lens 310. And, in order to ensure the diversification of the offset direction of the photosensitive chip 320, the first straight wire segment 511 and the second straight wire segment 521 are independent of each other. That is, when it is necessary to move the photosensitive chip 320 relative to the base 120, a current can be passed through the first straight wire segment 511 alone, or a current can be passed through the second straight wire segment 521 alone, or a current can be passed through both the first straight wire segment 511 and the second straight wire segment 521 at the same time. At the same time, the magnitude and direction of the current passed through the first straight wire segment 511 and the second straight wire segment 521 can be correspondingly controlled according to the magnitude and direction of the displacement required by the photosensitive chip 320, ensuring the anti-shake accuracy of the lens module.

[0030] As described above, the first straight wire segment 511 extends along the first direction, and the second straight wire segment 521 extends along the second direction. Therefore, when only the first straight wire segment 511 is energized, under the magnetic field action of the magnet 540, the first straight wire segment 511 can make the mounting base 330 move relative to the base 120 along the second direction; when only the second straight wire segment 521 is energized, under the magnetic field action of the magnet 540, the second straight wire segment 521 can make the mounting base 330 move relative to the base 120 along the first direction; when both the first straight wire segment 511 and the second straight wire segment 521 are energized, under the magnetic field action of the magnet 540, the mounting base 330 can be made to move relative to the base 120 along the combined direction of the first direction and the second direction, and the specific situation of the movement direction can be determined corresponding to the combination of vector synthesis according to the magnitude and direction of the current passed through the first straight wire segment 511 and the second straight wire segment, which will not be elaborated here.

[0031] An embodiment of the present application discloses a lens module, in which a lens 310 is installed on a base 120, and an image sensor chip 320 is installed on a mounting base 330. The mounting base 330 is movably arranged relative to the base 120, and the mounting base 330 can move relative to the base 120 through a driving mechanism 500. In the driving mechanism 500, a first straight wire segment 511 and a second straight wire segment 521 are perpendicularly arranged, and both are perpendicular to the optical axis direction of the lens 310. The first straight wire segment 511 and the second straight wire segment 521 are both located in the magnetic field of a magnet 540. Thus, when the first straight wire segment 511 and / or the second straight wire segment 521 is energized, the mounting base 330 can be driven to move relative to the base 120 along the extension direction of the first straight wire segment 511 (i.e., the first direction) and / or the extension direction of the second straight wire segment 521 (i.e., the second direction), enabling the lens module to have an anti-shake function. Moreover, in the above lens module, the components for enhancing the anti-shake effect are the wire and the magnet 540. The service lives of both are relatively long, and there is basically no contact relationship between them, which can prevent the friction between the components from affecting the anti-shake accuracy and ensure that the lens module has a high anti-shake accuracy.

[0032] In addition, an infrared filter can be provided in the lens module. The infrared filter is used to provide a filtering effect to improve the imaging effect of the lens module. The infrared filter can also provide a dust-proof function, thereby providing a protective effect for the image sensor chip 320 and preventing impurities such as dust from having an adverse effect on the imaging accuracy of the infrared filter. Specifically, the infrared filter is located between the lens 310 and the image sensor chip 320. Optionally, the infrared filter can also be installed on the mounting base 330 and be relatively fixed to the image sensor chip 320.

[0033] As described above, under the action of the first straight wire segment 511 and the second straight wire segment 521, the mounting base 330 can move relative to the base 120 in the first direction and / or the second direction. Simply put, the action of the first straight wire segment 511 and the second straight wire segment 521 on the mounting base 330 is to drive the mounting base 330 to displace relative to the base 120 along a certain straight line direction. However, during the operation of the electronic device or the lens module, there may also be torsional jitter. Therefore, in the lens module disclosed in the embodiments of the present application, the driving mechanism 500 may further include a third straight wire segment 531. The third straight wire segment 531 is arranged parallel to the first straight wire segment 511, that is, the third straight wire segment 531 also extends along the first direction. Moreover, the third straight wire segment 531 and the first straight wire segment 511 are distributed in the first direction, and the third straight wire segment 531 is also located in the magnetic field of the magnet 540. This enables the third straight wire segment 531 and the first straight wire segment 511 to apply driving forces with opposite directions to the mounting base 330, so that the mounting base 330 can rotate relative to the lens 310 around the optical axis of the lens 310 with a certain position between the first straight wire segment 511 and the third straight wire segment 531 as the center, thereby enabling the lens module to have the function of rotational anti-shake and improving the anti-shake performance of the lens module.

[0034] More specifically, the first straight wire segment 511 and the third straight wire segment 531 can be located in the same magnetic field. Specifically, the first straight wire segment 511 and the third straight wire segment 531 can both be located in the magnetic field generated by the same magnet 540 to ensure that the acting directions of the magnetic field forces they receive are the same; or, at least one magnet 540 can be respectively provided for the first straight wire segment 511 and the third straight wire segment 531. By making the magnetic poles of the corresponding magnets 540 of the two the same, it is also possible to ensure that the acting directions of the magnetic field forces they receive are the same.

[0035] In another embodiment of the present application, the first straight wire segment 511 and the third straight wire segment 531 can be located in different magnetic fields. Specifically, by respectively providing at least one magnet 540 for the first straight wire segment 511 and the third straight wire segment 531 and making the magnetic poles of the corresponding magnets 540 of the two opposite, the acting directions of the magnetic field forces received by the first straight wire segment 511 and the third straight wire segment 531 can be made opposite.

[0036] In addition, regarding the magnitudes of the magnetic field forces received by the first straight wire segment 511 and the third straight wire segment 531, there is no limitation here. For the convenience of controlling the movement of the mounting base 330, the magnitudes of the magnetic field forces received by the first straight wire segment 511 and the third straight wire segment 531 can be made equal.

[0037] Based on the above embodiments, when the magnetic field directions received by the first straight wire segment 511 and the third straight wire segment 531 are the same, by controlling the currents flowing in opposite directions in the two, the first straight wire segment 511 and the third straight wire segment 531 can respectively provide opposite-direction acting forces for the mounting base 330. Under the action of the two opposite-direction acting forces, the mounting base 330 can be rotated relative to the lens 310 along the direction around the optical axis of the lens 310. Correspondingly, based on actual factors such as the magnetic field acting intensity received by the first straight wire segment 511 and the third straight wire segment 531, the magnitudes of the currents flowing in the two can be correspondingly controlled to achieve the purpose of controlling the rotation angle of the mounting base 330 relative to the lens 310.

[0038] When the magnetic field directions received by the first straight wire segment 511 and the third straight wire segment 531 are opposite, by controlling the currents flowing in the same direction in the two, the first straight wire segment 511 and the third straight wire segment 531 can also provide opposite-direction acting forces for the mounting base 330. Under the action of the two opposite-direction acting forces, the mounting base 330 is rotated relative to the lens 310 along the direction around the optical axis of the lens 310. Correspondingly, based on actual factors such as the magnetic field acting intensity received by the first straight wire segment 511 and the third straight wire segment 531, the magnitudes of the currents flowing in the two can be correspondingly controlled to achieve the purpose of controlling the rotation angle of the mounting base 330 relative to the lens 310. In this embodiment, if other conditions permit, the first straight wire segment 511 and the second straight wire segment 521 can be connected in series to reduce the difficulty of power connection. Or, the first straight wire segment 511 and the third straight wire segment 531 can also be independent of each other, that is, they are independently powered, so that during the process of controlling the rotation of the mounting base 330 relative to the base 120, the rotation accuracy of the mounting base 330 can be improved, and further the anti-shake accuracy of the lens module can be improved.

[0039] When the lens module includes the third straight wire segment 531, the second straight wire segment 521 can be located on the side of the first straight wire segment 511 away from the third straight wire segment 531. In another embodiment of the present application, along the first direction, the second straight wire segment 521 can be located between the first straight wire segment 511 and the third straight wire segment 531. In this case, the first straight wire segment 511 and the third straight wire segment 531 are located on opposite sides of the second straight wire segment 521, so that when driving the mounting base 330 to rotate relative to the base 120 and when driving the mounting base 330 to translate relative to the base 120, the force uniformity of the mounting base 330 can be relatively better, and the movement stability of the mounting base 330 can be improved.

[0040] More specifically, the first straight wire segment 511 and the third straight wire segment 531 can be symmetrically arranged with respect to the second straight wire segment 521 as the axis of symmetry. And when the center of the mounting base 330 (or the photosensitive chip 320) is located on the optical axis of the lens 310, the second straight wire segment 521 can be centered with respect to the lens 310 (and the photosensitive chip 320). This can further improve the uniform stress on the photosensitive chip 320 (and the mounting base 330), and can improve the movement accuracy of the photosensitive chip 320, thereby improving the anti-shake performance of the lens module.

[0041] As described above, both the first straight wire segment 511 and the second straight wire segment 521 are located in the magnetic field of the magnet 540. Therefore, the number of magnets 540 can be one, and the size of this magnet 540 is relatively large, so that the magnet 540 can cover the areas where the first straight wire segment 511 and the second straight wire segment 521 are located, thereby providing a magnetic field effect for the first straight wire segment 511 and the second straight wire segment 521. In order to improve the structural compactness of the driving mechanism 500 in the electronic device and reduce the space occupied by the driving mechanism 500, optionally, the number of magnets 540 is multiple, and at least one magnet 540 is provided for both the first straight wire segment 511 and the second straight wire segment 521.

[0042] That is to say, both the first straight wire segment 511 and the second straight wire segment 521 are independently provided with a magnet 540, so that the magnets 540 can be correspondingly matched according to the respective sizes and positions of the first straight wire segment 511 and the second straight wire segment 521, making the space occupied by the first straight wire segment 511 and the second straight wire segment 521 correspond to the space occupied by the magnets 540, and minimizing the space occupied by the magnets 540. And in the case of adopting the above technical solution, different magnets 540 with different parameters can be selectively matched for the first straight wire segment 511 and the second straight wire segment 521 according to actual needs, enhancing the convenience of the lens module.

[0043] More specifically, according to the respective lengths of the first straight wire segment 511 and the second straight wire segment 521, a magnet 540 can be correspondingly provided for both the first straight wire segment 511 and the second straight wire segment 521, ensuring that the corresponding magnet 540 can provide a relatively uniform magnetic field effect for each part on the first straight wire segment 511 and the second straight wire segment 521, and improving the uniform stress on the first straight wire segment 511 and the second straight wire segment 521.

[0044] In addition, in the case of adopting the above technical solution, if the lens module further includes a third straight wire segment 531, it is also convenient for the formation process of the magnetic field of the third straight wire segment 531. Specifically, at least one magnet 540 can be independently arranged on the first straight wire segment 511, the second straight wire segment 521, and the third straight wire segment 531 respectively. In this case, the space occupied by the multiple magnets 540 is relatively small, which is convenient for improving the space utilization rate within the lens module.

[0045] As described above, the driving mechanism 500 includes a first straight wire segment 511, and according to the displacement of the mounting seat 330, by passing a current with a preset magnitude and direction into the first straight wire segment 511, the first straight wire segment 511 can move within the magnetic field, and the mounting seat 330 can generate a corresponding displacement relative to the base 120. During the process of energizing the first straight wire segment 511, specifically, a wire can be used to electrically connect the first straight wire segment 511 to the battery or circuit board of the electronic device to supply a current with a preset magnitude and direction to the first straight wire segment 511.

[0046] As Figure 4 shown, in another embodiment of the present application, the driving mechanism 500 includes a first coil 510. The first coil 510 includes a fourth straight wire segment 512 and the above-mentioned first straight wire segment 511 that are parallel to each other and electrically connected. Both the fourth straight wire segment 512 and the first straight wire segment 511 are provided with magnets 540. By designing the magnetic poles of the magnets 540 arranged on the first straight wire segment 511 and the fourth straight wire segment 512, the magnetic field direction received by the fourth straight wire segment 512 can be made opposite to the magnetic field direction received by the first straight wire segment 511. Thus, the first straight wire segment 511 and the fourth straight wire segment 512 connected end to end can provide a driving effect in the same direction for the mounting seat 330 under the action of the corresponding magnetic field. In the case of adopting the embodiment of the present application, the magnitude of the force received by the mounting seat 330 can be increased. Moreover, by respectively arranging magnets 540 on the first straight wire segment 511 and the fourth straight wire segment 512 and making the magnetic poles of the magnets 540 arranged on the two facing the mounting seat 330 opposite, the regularity of the magnetic field generated by the magnets 540 corresponding to the first coil 510 can also be improved, preventing the magnetic field disorder from having an adverse impact on the action accuracy of the first coil 510.

[0047] Furthermore, the first line segment can include multiple first straight wire segments 511 and multiple fourth straight wire segments 512, and the multiple first straight wire segments 511 and the multiple fourth straight wire segments 512 are alternately connected end to end to further increase the magnitude and stability of the driving effect provided by the first coil 510 for the mounting seat 330.

[0048] Moreover, based on the above embodiments, the driving mechanism 500 further includes a second coil 520. The second coil 520 includes a fifth straight wire segment 522 and the above-mentioned second straight wire segment 521. The second straight wire segment 521 and the fifth straight wire segment 522 are connected end to end, and magnets 540 are respectively arranged on both of them, so that the direction of the magnetic field acting on the second straight wire segment 521 is opposite to the direction of the magnetic field acting on the fifth straight wire segment 522. Thus, when a current is passed through the second coil 520, the second straight wire segment 521 and the fifth straight wire segment 522 can provide driving forces in the same direction for the mounting base 330. Similarly, the second coil 520 may also include a plurality of second straight wire segments 521 and a plurality of fifth straight wire segments 522, and the plurality of second straight wire segments 521 and the plurality of fifth straight wire segments 522 are alternately connected end to end to further enhance the magnitude and stability of the driving action provided by the second coil 520 for the mounting base 330.

[0049] In addition, based on the above embodiments, the driving mechanism 500 further includes a third coil 530. The third coil 530 includes a sixth straight wire segment 532 and the above-mentioned third straight wire segment 531. The third straight wire segment 531 and the sixth straight wire segment 532 are connected end to end, and magnets 540 are respectively arranged on both of them, so that the direction of the magnetic field acting on the third straight wire segment 531 is opposite to the direction of the magnetic field acting on the sixth straight wire segment 532. Thus, when a current is passed through the third coil 530, the third straight wire segment 531 and the sixth straight wire segment 532 can provide driving forces in the same direction for the mounting base 330. Similarly, the third coil 530 may also include a plurality of third straight wire segments 531 and a plurality of sixth straight wire segments 532, and the plurality of third straight wire segments 531 and the plurality of sixth straight wire segments 532 are alternately connected end to end to further enhance the magnitude and stability of the driving action provided by the third coil 530 for the mounting base 330.

[0050] Of course, when the technical solutions disclosed in the above embodiments are adopted, the magnetic fields generated by the magnets 540 respectively cooperating with the second coil 520 and the third coil 530 will inevitably have a magnetic field effect on the first coil 510. Therefore, during the design process of the lens module, the magnetic field effects on the first coil 510, the second coil 520, and the third coil 530 can be tested and regulated to ensure that the magnitudes and directions of the magnetic field intensities on the corresponding parts of the first coil 510, the second coil 520, and the third coil 530 are basically the same, so as to ensure a relatively high precision when the driving mechanism 500 is used to move the mounting base 330 relative to the base 120.

[0051] As described above, the lens 310 can be mounted on the base 120. Optionally, the lens module further includes a base plate 130, which can provide a bearing function for devices such as the lens 310 and the mounting seat 330, and facilitates the lens module to form an integral structural member. The base plate 130 can be formed of a hard material such as metal or plastic, and the base 120 can be supported on the base plate 130, and a fixed connection relationship can be formed between the base 120 and the base plate 130 by means of bonding or the like. In addition, the lens module can further include a housing 110, which covers the base 120 and the lens 310. Structures such as the mounting seat 330, the photosensitive chip 320, and the driving mechanism 500 can also be disposed within the housing 110 to provide a protective function for the foregoing devices by means of the housing 110. Moreover, by fixedly connecting the housing 110 and the base plate 130, other devices within the lens module can be encapsulated within the space enclosed by the housing 110 and the base plate 130. Of course, in order to ensure that external light can enter the lens 310 and be acquired by the photosensitive chip 320, a light passing hole needs to be provided on the housing 110. At the same time, in order to prevent external dust and other impurities from entering the housing 110 through the light passing hole of the housing 110, an infrared filter 360 can be provided at the light passing hole.

[0052] Moreover, in the above embodiment, the photosensitive chip 320 can be electrically connected to a power supply device such as a battery of an electronic device through a flexible circuit board 700. More specifically, the lens module can further include a connector 340. The photosensitive chip 320 can be electrically connected to the connector 340 through the flexible circuit board 700, and the connector 340 can be interconnected with devices such as the main board of the electronic device, so that the battery of the electronic device can supply power to the photosensitive chip 320 through the main board and adapt to the connection rules within the electronic device.

[0053] As described above, flexible circuit boards 700 can be provided on both opposite sides of the photosensitive chip 320, and under the action of the flexible circuit boards 700 on both sides, the photosensitive chip 320 can be "suspended" and disposed. More specifically, two flexible circuit boards 700 are provided on the side of the base plate 130 where the lens 310 is located. The two flexible circuit boards 700 are respectively disposed on opposite sides of the lens 310, and each flexible circuit board 700 is connected to the photosensitive chip 320 and the base 120 to provide a supporting function for the photosensitive chip 320 in a direction perpendicular to the base plate 130, so that the photosensitive chip 320 is spaced apart from the base plate 130, thereby ensuring that the photosensitive chip 320 has the ability to move relative to the base plate 130, so that the lens module can perform anti-shake work.

[0054] To improve the deformation ability of the flexible circuit board 700 to adapt to the relative movement form between the mounting base 330 and the base 120, optionally, the flexible circuit board 700 may include a limiting portion 710 and a connecting portion 720. Among them, the connecting portion 720 is located between the lens 310 and the bottom plate 130. The connecting portion 720 can be connected to both the photosensitive chip 320 and the connector 340 to serve as a transmission medium for electrical signals and control signals between the photosensitive chip 320 and the connector 340. Limiting portions 710 are provided on both opposite sides of the lens 310, and each limiting portion 710 is spaced from the bottom plate 130, so that the photosensitive chip 320 can be spaced from the bottom plate 130 through the limiting portion 710, ensuring that the photosensitive chip 320 has the ability to move relative to the base 120 (and the bottom plate 130). Moreover, the limiting portion 710 also provides a supporting effect for the photosensitive chip 320 in the direction perpendicular to the bottom plate 130. Under the combined action of the two limiting portions 710, it can be ensured that the photosensitive chip 320 can be "suspended" on the side of the bottom plate 130 where the lens 310 is located.

[0055] Furthermore, each limiting portion 710 includes a first connecting segment 711, a deformation segment 712, and a second connecting segment 713 that are sequentially connected along the optical axis direction of the lens 310. Each first connecting segment 711 is fixedly connected to the mounting base 330, and each second connecting segment 713 is fixedly connected to the base 120. Thus, the limiting portion 710 can provide an installation function for the connection relationship between the photosensitive chip 320 and the base 120, ensuring that the photosensitive chip 320 and the mounting base can be spaced apart and arranged on one side of the bottom plate 130. Specifically, a fixed connection relationship can be formed between the first connecting segment 711 and the mounting base 330, and between the second connecting end and the base 120 through bonding or other means.

[0056] Meanwhile, each deformation segment 712 is provided with a plurality of through holes 712a. Each through hole 712a extends along the optical axis direction, and the plurality of through holes 712a on each deformation segment 712 are spaced apart in the direction perpendicular to the bottom plate 130. Thus, the deformation segment 712 forms a structure similar to a grid. And since the deformation segment 712 is part of the flexible circuit board 700 and its thickness is relatively small itself, this enables the deformation segment 712 to provide a good supporting effect for the photosensitive chip 320 in the direction perpendicular to the bottom plate 130, while also allowing the deformation segment 712, under the action of its own deformation, to ensure that the photosensitive chip 320 can form a smooth movable cooperation relationship with the base 120, improving the movement accuracy of the photosensitive chip 320.

[0057] As described above, when the driving mechanism 500 is used to move the mounting base 330 relative to the base 120, the first straight wire segment 511 and the second straight wire segment 521 can be fixed on one of the base 120 and the mounting base 330, and the magnet 540 is fixed on the other of the base 120 and the mounting base 330, ensuring that the first straight wire segment 511 and the second straight wire segment 521 can move the mounting base 330 relative to the base 120. In a specific embodiment of the present application, the first straight wire segment 511 and the second straight wire segment 521 can be fixed to the mounting base 330, and the magnet 540 can be fixed relative to the base 120. In this case, since the base 120 can be used as a component in the lens assembly to form a fixed connection relationship with components such as the housing or middle frame of the electronic device, the base 120 can be used as a reference system. In this case, the position of the magnet 540 in the driving mechanism 500 is fixed, so that the magnetic field distribution generated by the magnet 540 is unique, and the magnet 540 will not move relative to the housing or other components of the electronic device, which may cause the magnet 540 to be affected by other magnetic elements in the electronic device, causing the magnetic field distribution generated by the magnet 540 in the driving mechanism 500 to change, thereby making the movement trajectory of the first straight wire segment 511 and the second straight wire segment 521 more controllable and the movement accuracy relatively higher.

[0058] In the above embodiment, the magnitude and direction of the current input into the first straight wire segment 511 and / or the second straight wire segment 521 can be controlled accordingly based on the actual conditions such as the magnitude and direction of the magnetic field strength to which the first straight wire segment 511 and the second straight wire segment 521 in the driving mechanism 500 are subjected, according to the acquired shaking direction and magnitude of the lens module, so that the driving mechanism 500 can cause the mounting base 330 to generate a displacement relative to the base 120 (or the lens 310) that is the same magnitude as the aforementioned shaking and in the opposite direction, thereby achieving the anti-shake purpose of the lens module.

[0059] In order to more accurately control the parameters of the relative displacement between the mounting base 330 and the base 120, optionally, the lens module can also include multiple Hall displacement sensors, and the first straight wire segment 511 and the second straight wire segment 521 are respectively provided with Hall position sensors. Under the action of the corresponding Hall position sensors, a more accurate relative displacement amount and displacement direction between the mounting base 330 and the base 120 can be obtained, so that based on the detection results of the corresponding Hall sensors, the output parameters of the driving mechanism 500 can be controlled through feedback adjustment to prevent the driving mechanism 500 from being affected by unknown factors during the operation process, resulting in a difference between the actual driving result and the preset driving result, thereby ensuring that the driving accuracy of the driving mechanism 500 is higher.

[0060] More specifically, Hall sensors can be provided on one side of each of the first straight wire segment 511 and the second straight wire segment 521. In the case where the lens module is provided with a third straight wire segment 531, a Hall sensor can also be correspondingly provided for the third straight wire segment 531. Additionally, in the above embodiments, the drive mechanism 500 can be provided with a first coil 510, a second coil 520, and a third coil 530 to drive the mounting base 330 to move relative to the base 120. In this case, a Hall position sensor can be provided inside the first coil 510, that is, between the first straight wire segment 511 and the fourth straight wire segment 512, so that the same Hall sensor can obtain the relative position between the first coil 510 and the base 120 by separately detecting the distances between the detector and the first straight wire segment 511 and the fourth straight wire segment 512, improving the monitoring accuracy of the position of the first coil 510. Similarly, a Hall position sensor can also be correspondingly provided between the second straight wire segment 521 and the fifth straight wire segment 522 to simultaneously detect the positions of both the second straight wire segment 521 and the fifth straight wire segment 522 relative to the base 120; a Hall position sensor can also be correspondingly provided between the third straight wire segment 531 and the sixth straight wire segment 532 to simultaneously detect the positions of both the third straight wire segment 531 and the sixth straight wire segment 532 relative to the base 120. This can achieve the purpose of high-precision monitoring of the relative position between the mounting base 330 and the base 120 with a relatively small number of Hall position sensors provided.

[0061] As described above, light outside the lens module can enter the lens 310 and be received by the photosensitive chip 320 located on the light-emitting side of the lens 310. And, in the above embodiments, the lens module can be provided with a housing 110, and by providing a light-passing hole on the housing 110, it can be ensured that light outside the housing 110 can enter the housing 110. Based on this, during the assembly of the lens module, the optical axis of the lens 310 can be parallel to the light-passing hole of the housing 110, and the lens 310 can be opposite to the light-passing hole, ensuring that light outside the housing 110 can enter the housing 110 from the light-passing hole and then enter the photosensitive chip 320 through the lens 310.

[0062] In another embodiment of the present application, in order to increase the zoom ratio of the lens module and reduce the size of the lens module in the light-incident direction, optionally, the lens module further includes a multi-curved prism 350. The light-incident side of the multi-curved prism 350 is perpendicular to its light-emitting direction, that is, the multi-curved prism 350 can change the propagation direction of light, so that the optical axis of the lens 310 can be set perpendicular to the light-incident direction of the lens module.

[0063] Moreover, through such means as adhesion or snap connection, the multi-curved prism 350 can be fixed to the base 120. At the same time, the multi-curved prism 350 is disposed on the light incident side of the lens 310, ensuring that the light outside the lens module can be incident into the lens 310 after passing through the multi-curved prism 350 and is finally received by the photosensitive chip 320.

[0064] Based on any of the above embodiments, the present application also discloses an electronic device, which includes the lens module disclosed in any of the above embodiments. Of course, the electronic device may also include other components such as a battery, a display module, and a processor. For the sake of brevity, they are not described one by one here.

[0065] It should be noted that in this document, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising such element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, the features described with reference to certain examples may be combined in other examples.

[0066] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Those of ordinary skill in the art, under the inspiration of the present application and without departing from the spirit and scope protected by the claims of the present application, can still make many forms, all of which fall within the protection scope of the present application.

Claims

1. A lens module, characterized in that, It includes a base (120), a lens (310), a photosensitive chip (320), a mounting base (330) and a driving mechanism (500), wherein, the lens (310) is mounted on the base (120), the photosensitive chip (320) is fixed to the mounting base (330), and the photosensitive chip (320) is disposed on the light-emitting side of the lens (310), and the mounting base (330) is movably disposed relative to the base (120); the driving mechanism (500) includes a first straight wire segment (511), a second straight wire segment (521), a third straight wire segment (531) and a magnet (540). The first straight wire segment (511) and the third straight wire segment (531) both extend along a first direction perpendicular to the optical axis of the lens (310). The second straight wire segment (521) extends along a second direction perpendicular to the first direction. The magnet (540) is located on the same side of the first straight wire segment (511), the third straight wire segment (531) and the second straight wire segment (521), and the first straight wire segment (511), the third straight wire segment (531) and the second straight wire segment (521) are all located in the magnetic field of the magnet (540). Along the first direction, the second straight wire segment (521) is located between the first straight wire segment (511) and the third straight wire segment (531), and the first straight wire segment (511), the second straight wire segment (521) and the third straight wire segment (531) are all located in a plane perpendicular to the optical axis of the lens (310); the driving mechanism (500) is used to drive the mounting base (330) to move relative to the base (120) along the first direction and / or the second direction. When the magnetic field directions received by the first straight wire segment (511) and the third straight wire segment (531) are the same, currents with opposite directions are controlled to be introduced into the two, or when the magnetic field directions received by the first straight wire segment (511) and the third straight wire segment (531) are opposite, the directions of the currents introduced into the two are controlled to be the same, so that the driving mechanism (500) drives the mounting base (330) to rotate relative to the lens (310) along the direction around the optical axis of the lens (310).

2. The lens module according to claim 1, wherein The number of the magnets (540) is multiple, and at least one magnet (540) is disposed on both the first straight wire segment (511) and the second straight wire segment (521).

3. The lens module according to claim 1, wherein The driving mechanism (500) includes a first coil (510). The first coil (510) includes a fourth straight wire segment (512) and the first straight wire segment (511) that are parallel to each other and conductively connected. The fourth straight wire segment (512) and the first straight wire segment (511) are both provided with the magnet (540), and the magnetic field direction received by the fourth straight wire segment (512) is opposite to the magnetic field direction received by the first straight wire segment (511).

4. The lens module according to claim 1, wherein The lens module includes a base plate (130), a connector (340), and a flexible circuit board (700). The base (120) is supported on the base plate (130), and the photosensitive chip (320) is electrically connected to the connector (340) through the flexible circuit board (700). The flexible circuit board (700) includes a limiting portion (710) and a connecting portion (720). The connecting portion is located between the lens (310) and the base plate (130). The connecting portions (720) are provided on both opposite sides of the lens (310), and each of the limiting portions (710) is spaced apart from the base plate (130). Each of the limiting portions (710) includes a first connecting segment (711), a deformation segment (712), and a second connecting segment (713) connected in sequence along the optical axis direction of the lens (310). Each of the first connecting segments (711) is fixedly connected to the mounting seat (330), each of the second connecting segments (713) is fixedly connected to the base (120), and each of the deformation segments (712) is provided with a plurality of through long holes (712a) extending along the optical axis direction. The plurality of through long holes (712a) on any one of the deformation segments (712) are spaced apart in a direction perpendicular to the base plate (130).

5. The lens module according to claim 1, wherein The first straight wire segment (511) and the second straight wire segment (521) are both fixed to the mounting seat (330), and the magnet (540) is relatively fixed to the base (120).

6. The lens module according to claim 1, wherein The lens module further includes a plurality of Hall position sensors, and the Hall position sensors are respectively provided corresponding to the first straight wire segment (511) and the second straight wire segment (521).

7. The lens module according to claim 1, wherein The lens module further includes a multi-curved prism (350). The incident light direction of the multi-curved prism (350) is perpendicular to its outgoing light direction. The multi-curved prism (350) is fixed to the base (120), and the multi-curved prism (350) is arranged on the incident light side of the lens (310).

8. An electronic device, characterized in that, Including the lens module according to any one of claims 1-7.

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