CN115580769A

CN115580769A - Lens module and electronic equipment

Info

Publication number: CN115580769A
Application number: CN202211178070.7A
Authority: CN
Inventors: 杨泽; 李光云
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2022-09-23
Filing date: 2022-09-23
Publication date: 2023-01-06
Also published as: WO2024061301A1

Abstract

The application discloses a lens module and electronic equipment, which belong to the field of communication equipment, wherein the lens module comprises 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 on the mounting seat, the photosensitive chip is arranged on the light emitting side of the lens, and the mounting seat is movably arranged relative to the base; the driving mechanism comprises a first straight line segment, a second straight line segment and a magnet, the first straight line segment extends along a first direction perpendicular to an optical axis of the lens, the second straight line segment extends along a second direction perpendicular to the first direction, the magnet is located on the same side of the first straight line segment and the second straight line segment, the first straight line segment and the second straight line segment are located in a magnetic field of the magnet, and the driving mechanism is used for driving the mounting base to move relative to the base along the first direction and/or the second direction.

Description

Lens module and electronic equipment

Technical Field

The application belongs to the technical field of communication equipment, and particularly relates to a lens module and electronic equipment.

Background

With the development of technology, the image capability of electronic devices has become a function mainly used to enhance user experience. The anti-shake function is an important capability of an image part in electronic equipment, at present, a focusing motor and other mechanical devices are generally used for being connected with a photosensitive chip in a lens module, and in the process of shaking of the electronic equipment, the focusing motor is used for reversely translating the photosensitive chip, so that the anti-shake purpose is realized. However, in such an anti-shake structure, the focusing motor is easily damaged, the service life is relatively short, and the anti-shake precision of the focusing motor is relatively low due to the limitation of the working principle of the focusing motor.

Disclosure of Invention

An object of the embodiments of the present application is to provide a lens module and an electronic device, so as to solve the problems that the service life of a focusing motor for providing an anti-shake function in the existing electronic device is relatively short, and the anti-shake precision is relatively low.

In a first aspect, an embodiment of the present application discloses a lens module, which includes a base, a lens, a photo sensor chip, a mounting seat, and a driving mechanism,

the lens is arranged on the base, the photosensitive chip is fixed on the mounting seat, the photosensitive chip is arranged on the light emitting side of the lens, and the mounting seat is movably arranged relative to the base;

the driving mechanism comprises a first straight line segment, a second straight line segment and a magnet, the first straight line segment extends along a first direction perpendicular to an optical axis of the lens, the second straight line segment extends along a second direction perpendicular to the first direction, the magnet is located on the same side of the first straight line segment and the second straight line segment, the first straight line segment and the second straight line segment are located in a magnetic field of the magnet, and the driving mechanism is used for driving the mounting base to move relative to the base along the first direction and/or the second direction.

In a second aspect, an embodiment of the present application discloses an electronic device, which includes the lens module.

The embodiment of the application discloses a lens module, its lens are installed in the base, and sensitization chip installs in the mount pad, and the relative base activity of mount pad sets up, and the mount pad passes through actuating mechanism and can relative base motion. Among the actuating mechanism, first straight wire section and the perpendicular setting of the straight wire section of second, and the optical axis direction of equal perpendicular to lens, first straight wire section and the straight wire section of second all are located the magnetic field of magnet, and then under the circumstances of the straight wire section of first straight wire section and/or the straight wire section circular telegram of second, can drive the relative base of mount pad along the extending direction (being the first direction) of first straight wire section and/or the extending direction (being the second direction) motion of the straight wire section of second, make the camera lens module possess the anti-shake function. Moreover, in the lens module, the devices for improving the anti-shake effect are the conducting wires and the magnets, the service lives of the conducting wires and the magnets are relatively long, and the conducting wires and the magnets are basically not in mutual contact with each other, so that the friction effect between the devices can be prevented from influencing the anti-shake precision, and the lens module is ensured to have higher anti-shake precision.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic structural diagram of a lens module disclosed in an embodiment of the present application;

fig. 2 and 3 are schematic diagrams illustrating a partial structure of a lens module disclosed in an embodiment of the present application;

fig. 4 is a schematic structural diagram of a driving mechanism in a lens module disclosed in the embodiment of the present application.

Description of reference numerals:

110-shell, 120-base, 130-bottom plate,

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

500-drive 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 conductor segment, 530-third coil, 531-third straight conductor segment, 532-sixth straight conductor segment, 540-magnet,

700-flexible circuit board, 710-limiting part, 711-first connecting section, 712-deformation section, 712 a-penetrating long hole, 713-second connecting section and 720-connecting part.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

The electronic device provided by the embodiment of the present application is described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.

As shown in fig. 1 to 4, 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.

The base 120 is a device for providing a basic mounting function in the lens module, and may be formed of a hard material such as metal or plastic, so as to provide a stable mounting function for other devices. The specific shape, size, and other parameters of the base 120 may be determined according to actual conditions, considering that the lens 310 is generally a circular structure and the photosensitive chip 320 is generally a rectangular structure, in order to facilitate the installation of other devices in the lens module on the base 120, the base 120 may be generally a rectangular structure, and in order to ensure that the base 120 does not obstruct the photosensitive chip 320 from performing photosensitive operation, the base 120 may be a through structure, so that light incident from one side of the base 120 can be incident into the photosensitive chip 320.

The lens 310 is used for providing a light distribution effect, the lens 310 may be formed by a material such as glass or resin, and the size of the lens 310 may be selected according to the photosensitive area of the photosensitive chip 320. The number of the lens 310 may be one, in order to improve the imaging effect of the lens module, the number of the lens 310 may be multiple, the multiple lenses 310 are distributed along a straight line, optical axes of the multiple lenses 310 are located on the same straight line, the multiple lenses 310 may include at least one convex lens and at least one concave lens, and of course, the multiple lenses 310 may further include other types of optical devices, which is not limited herein. In the process of assembling the lens module, the lens 310 is mounted on the base 120, and specifically, the lens 310 and the base 120 may be fixedly connected, or the lens 310 may also be moved relative to the base 120 by using a zoom device such as a voice coil motor, so as to provide a zooming effect and improve the application range of the lens module.

The photosensitive chip 320 is used for providing an imaging function, and can convert an optical image into an electrical signal, convert the electrical signal into a digital signal through analog-to-digital conversion, process the digital signal by using a digital signal processing technology, and convert the processed digital signal into an image capable of being displayed on a display screen of an electronic device after being processed by a processor of the electronic device.

The mounting base 330 is a device for providing a mounting base for the photosensitive chip 320, and can be used as a medium for other devices to form a connection relationship with the photosensitive chip 320, so as to prevent other devices from being directly connected to the photosensitive chip 320, which may adversely affect the performance and the service life of the photosensitive chip 320. For this reason, the mounting seat 330 may be made of a hard material such as plastic or metal, and the mounting seat 330 may have a mounting plane, so that the photosensitive chip 320 can be more reliably fixed on the mounting plane of the mounting seat 330. Specifically, the photosensitive chip 320 may be fixedly connected to the base 120 by means of bonding or the like. 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 into the photosensitive chip 320 for imaging.

In addition, the lens module may further include a circuit board and other devices, where the circuit board is used to supply power to the photosensitive chip 320 and other components, and may be used as a supporting device for the photosensitive chip 320 and the mounting base 330. Specifically, the circuit board can be flexible circuit board 700, both sides that carry on the back through making mount pad 330 all are equipped with flexible circuit board 700, and make flexible circuit board 700 all extend to the direction at lens 310 place, under the circumstances that each flexible circuit board 700 and base 120 and mount pad 330 all are connected, utilize flexible circuit board 700 to possess anti buckling effect on self length direction, provide supporting role for mount pad 330 and sensitization chip 320 that weight is less relatively, make sensitization chip 320 "unsettled" setting, and then guarantee that sensitization chip 320 and mount pad 330 all set up with base 120 activity, and then can be through changing the relative position between sensitization chip 320 and the lens 310, reach anti-shake effect. Accordingly, the photosensitive chip 320 can be electrically connected to the flexible circuit board 700, so that the flexible circuit board 700 can provide power for 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 may also form a connection relationship through an elastic connection member, and the relative movement between the photosensitive chip 320 and the base 120 is not limited while providing a supporting function for the photosensitive chip 320.

As shown in fig. 4, the driving mechanism 500 includes a first straight wire segment 511, a second straight wire segment 521 and a magnet 540, wherein the first straight wire segment 511 extends along a first direction perpendicular to the optical axis of the lens 310, the second straight wire segment 521 extends along 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 form a plane perpendicular to the optical axis of the lens 310. Meanwhile, the magnet 540 may provide a magnetic field, and the magnet 540 is located on the same side of the first straight conductor segment 511 and the second straight conductor segment 521, so that the first straight conductor segment 511 and the second straight conductor segment 521 are both located in the magnetic field of the magnet 540, and thus, when the first straight conductor segment 511 and the second straight conductor segment 521 are energized, the first straight conductor segment 511 and the second straight conductor segment 521 can move in the magnetic field, and a driving force is provided, so that the driving mechanism 500 can drive the mounting base 330 to move in the first direction and/or the second direction relative to the base 120.

Specifically, in the driving mechanism 500, the magnet 540 is used to provide a magnetic field, and the first straight conducting wire segment 511 and the second straight conducting wire segment 521 can be supplied with current, so that the first straight conducting wire segment 511 and the second straight conducting wire segment 521 are in an interaction relationship with the magnet 540, and further, in the process of assembling the lens module, the first straight conducting wire segment 511 and the second straight conducting wire segment 521 can be made as a whole and form a relatively fixed relationship with one of the mount 330 and the base 120, and at the same time, the magnet 540 and the other of the mount 330 and the base 120 form a relatively fixed relationship, so that it is ensured that at least one of the first straight conducting wire segment 511 and the second straight conducting wire segment 521 can move in the magnetic field generated by the magnet 540 under the condition that at least one of the first straight conducting wire segment 511 and the second straight conducting wire segment 521 is electrified, and the mount 330 is driven to move relative to the base 120.

More specifically, magnet 540 may provide a magnetic field force to first and second

straight wire segments

511 and 521 in a direction along which the optical axis of lens 310 is located. In addition, the first straight wire segment 511 and the second straight wire segment 521 are independent from each other in order to ensure the diversification of the offset direction of the photosensitive chip 320. That is, when the photosensitive chip 320 needs to move relative to the base 120, the current may be separately applied to the first straight wire segment 511, the current may be separately applied to the second straight wire segment 521, or the current may be simultaneously applied to the first straight wire segment 511 and the second straight wire segment 521. Meanwhile, the magnitude and direction of the current flowing into the first straight conductor segment 511 and the second straight conductor segment 521 can be correspondingly controlled according to the magnitude and direction of the displacement required to be generated by the photosensitive chip 320, so that the anti-shake precision of the lens module is ensured.

As described above, the first straight conductor segment 511 extends in the first direction, and the second straight conductor segment 521 extends in the second direction, for which reason, when only the first straight conductor segment 511 is energized, the first straight conductor segment 511 can move the mount 330 in the second direction with respect to the base 120 under the magnetic field of the magnet 540; in the case where only the second straight wire segment 521 is energized, the second straight wire segment 521 can move the mounting seat 330 in a first direction relative to the base 120 under the magnetic field of the magnet 540; under the condition that the first straight conducting wire segment 511 and the second straight conducting wire segment 521 are both electrified, the mounting base 330 can move along the combined direction of the first direction and the second direction relative to the base 120 under the action of the magnetic field of the magnet 540, and the specific situation of the moving direction can be correspondingly determined by combining vector synthesis according to the magnitude and the direction of the current electrified in the first straight conducting wire segment 511 and the second straight guiding segment, which is not explained in detail herein.

The embodiment of the present application discloses a lens module, wherein a lens 310 is mounted on a base 120, a photosensitive chip 320 is mounted on a mounting base 330, the mounting base 330 is movably disposed 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, the first straight wire segment 511 and the second straight wire segment 521 are vertically disposed and are both 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 the magnet 540, and further, under the condition that the first straight wire segment 511 and/or the second straight wire segment 521 are energized, the mounting base 330 can be driven to move along the extending direction (i.e., the first direction) of the first straight wire segment 511 and/or the extending direction (i.e., the second direction) of the second straight wire segment 521 relative to the base 120, so that the lens module has an anti-shake function. Moreover, in the lens module, the devices for improving the anti-shake effect are the lead and the magnet 540, the service lives of the lead and the magnet are relatively long, and the two are not in mutual contact basically, so that the friction effect between the devices can be prevented from influencing the anti-shake precision, and the lens module is ensured to have higher anti-shake precision.

In addition, can also be equipped with infrared filter in the camera lens module, infrared filter is used for providing the filtering effect to promote the imaging of camera lens module, and infrared filter can also provide dustproof effect, and then for sensitization chip 320 provides the guard action, prevent that impurity such as dust from producing harmful effects to infrared filter's imaging precision. Specifically, the infrared filter is located between the lens 310 and the photosensitive chip 320, and optionally, the infrared filter may also be mounted on the mounting base 330, and the infrared filter and the photosensitive chip 320 are relatively fixed.

As described above, the mount 330 can be moved in the first direction and/or the second direction relative to the base 120 by the first straight wire segment 511 and the second straight wire segment 521, and in short, the first straight wire segment 511 and the second straight wire segment 521 act on the mount 330 to drive the mount 330 to displace in a certain straight direction relative to the base 120. However, during the operation of the electronic device or the lens module, there may be a torsional vibration, and for this reason, in the lens module disclosed in the embodiment of the present application, the driving mechanism 500 may further include a third straight wire segment 531, and the third straight wire segment 531 is disposed parallel to the first straight wire segment 511, that is, the third straight wire segment 531 also extends along the first direction. Furthermore, the third straight wire segment 531 and the first straight wire segment 511 are distributed along the first direction, and the third straight wire segment 531 is also located in the magnetic field of the magnet 540, so that the third straight wire segment 531 and the first straight wire segment 511 have driving acting forces applied in opposite directions to the mounting base 330, and thus the mounting base 330 can rotate relative to the lens 310 along the direction 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, so that the lens module has a rotation anti-shake function, and the anti-shake performance of the lens module is improved.

More specifically, the first straight conductor segment 511 and the third straight conductor segment 531 may be located in the same magnetic field, and specifically, both the first straight conductor segment 511 and the third straight conductor segment 531 may be located in the same magnetic field generated by the magnet 540, so as to ensure that the directions of actions of the magnetic fields applied to the first straight conductor segment 511 and the third straight conductor segment 531 are the same; or, the first straight wire segment 511 and the third straight wire segment 531 may be respectively provided with at least one magnet 540, and by making the magnetic poles of the magnets 540 corresponding to the first straight wire segment 511 and the third straight wire segment 531 the same, the directions of the magnetic field acting forces on the first straight wire segment 511 and the third straight wire segment may also be ensured to be the same.

In another embodiment of the present application, the first straight conductor segment 511 and the third straight conductor segment 531 may be located in different magnetic fields, specifically, at least one magnet 540 is correspondingly disposed on the first straight conductor segment 511 and the third straight conductor segment 531, and the magnetic poles of the magnets 540 corresponding to the first straight conductor segment 511 and the third straight conductor segment 531 are opposite to each other, so that the directions of the magnetic field acting forces borne by the first straight conductor segment 511 and the third straight conductor segment 531 are opposite to each other.

The magnitude of the magnetic field acting force applied to the first straight wire segment 511 and the third straight wire segment 531 is not limited here. In order to facilitate the control of the movement of the mounting seat 330, the magnitudes of the magnetic field acting forces applied to the first straight wire segment 511 and the third straight wire segment 531 may be equal.

Based on the above embodiment, under the condition that the directions of the magnetic fields received by the first straight wire segment 511 and the third straight wire segment 531 are the same, by controlling the currents in the two straight wire segments in opposite directions, the first straight wire segment 511 and the third straight wire segment 531 can respectively provide acting forces in opposite directions for the mount 330, and under the action of the acting forces in opposite directions, the mount 330 can rotate relative to the lens 310 along the direction around the optical axis of the lens 310. Accordingly, the current flowing through the first straight wire segment 511 and the third straight wire segment 531 can be correspondingly controlled based on the actual factors such as the strength of the magnetic field applied to the two segments, so as to control the rotation angle of the mounting base 330 relative to the lens 310.

Under the condition that the directions of the magnetic fields applied to the first straight wire segment 511 and the third straight wire segment 531 are opposite, by controlling the currents applied to the first straight wire segment 511 and the third straight wire segment 531 in the same direction, the first straight wire segment 511 and the third straight wire segment 531 can provide acting forces in opposite directions for the mount 330, and under the action of the acting forces in opposite directions, the mount 330 can rotate relative to the lens 310 along the direction around the optical axis of the lens 310. Accordingly, the current flowing through the first straight wire segment 511 and the third straight wire segment 531 can be correspondingly controlled based on the actual factors such as the strength of the magnetic field applied to the two segments, so as to control the rotation angle of the mounting base 330 relative to the lens 310. In this embodiment, if other conditions allow, the first straight conductor segment 511 and the second straight conductor 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 may be independent from each other, that is, they are independently powered, so that the rotation precision of the mount 330 can be improved in the process of controlling the mount 330 to rotate relative to the base 120, and the anti-shake precision of the lens module can be further improved.

In the case that the lens module includes the third straight conductive line segment 531, the second straight conductive line segment 521 may be located on a side of the first straight conductive line segment 511 facing away from the third straight conductive line segment 531. In another embodiment of the present application, along the first direction, the second straight conducting wire segment 521 may be located between the first straight conducting wire segment 511 and the third straight conducting wire segment 531, in which case, the first straight conducting wire segment 511 and the third straight conducting wire segment 531 are located on opposite sides of the second straight conducting wire segment 521, so that when the driving mount 330 rotates relative to the base 120 and when the driving mount 330 translates relative to the base 120, the uniformity of the stress on the mount 330 may be relatively better, and the stability of the motion of the mount 330 may be improved.

More specifically, the first straight wire segment 511 and the third straight wire segment 531 may be symmetrically disposed with the second straight wire segment 521 as a symmetry axis, and under the condition that 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 may be disposed centrally with respect to the lens 310 (and the photosensitive chip 320), which may further improve the stress uniformity of the photosensitive chip 320 (and the mounting base 330), and may improve the motion accuracy of the photosensitive chip 320, thereby improving the anti-shake performance of the lens module.

As described above, the first straight wire segment 511 and the second straight wire segment 521 are both located in the magnetic field of the magnet 540, and for this reason, the number of the magnet 540 may be one, and the size of the magnet 540 may be relatively large, so that the magnet 540 may cover the area 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 compactness of the driving mechanism 500 in the electronic device and reduce the space occupied by the driving mechanism 500, optionally, the number of the magnets 540 is multiple, and at least one magnet 540 is provided for each of the first straight conductor segment 511 and the second straight conductor segment 521.

That is, since the magnets 540 are independently disposed on the first and second

straight wire segments

511 and 521, the magnets 540 can be appropriately fitted according to the size and position of the first and second

straight wire segments

511 and 521, and the space occupied by the first and second

straight wire segments

511 and 521 can be made to correspond to the space occupied by the magnets 540, thereby minimizing the space occupied by the magnets 540. Moreover, under the condition of adopting the above technical scheme, the first straight conductor segment 511 and the second straight conductor segment 521 can be selectively matched with the magnets 540 with different parameters according to actual requirements, so that the convenience of the lens module is enhanced.

More specifically, one magnetic body 540 may be correspondingly disposed for each of the first straight conductor segment 511 and the second straight conductor segment 521 according to the respective lengths of the first straight conductor segment 511 and the second straight conductor segment 521, so as to ensure that the corresponding magnetic body 540 can provide a relatively uniform magnetic field effect for each of the first straight conductor segment 511 and the second straight conductor segment 521, and improve the uniformity of the stress of the first straight conductor segment 511 and the second straight conductor segment 521.

In addition, under the condition of adopting the above technical scheme, if the lens module further comprises the third straight wire section 531, the formation process of the magnetic field of the third straight wire section 531 is further facilitated. Specifically, the first straight wire segment 511, the second straight wire segment 521 and the third straight wire segment 531 may be respectively and independently provided with at least one magnet 540, in which case, the space occupied by the plurality of magnets 540 is relatively small, so as to improve the space utilization rate in the lens module.

As described above, the driving mechanism 500 includes the first straight conductor segment 511, and according to the displacement of the mounting seat 330, the first straight conductor segment 511 is enabled to move in the magnetic field by passing a current with a preset magnitude and direction into the first straight conductor segment 511, so that the mounting seat 330 generates a corresponding displacement relative to the base 120. In the process of connecting the first straight conductive line segment 511 with electricity, the first straight conductive line segment 511 may be electrically connected to a battery or a circuit board of an electronic device by a conductive line, so that the first straight conductive line segment 511 does not carry current of a predetermined magnitude and direction.

As shown in fig. 4, in another embodiment of the present application, the driving mechanism 500 includes a first coil 510, the first coil 510 includes a fourth straight conducting wire segment 512 and the first straight conducting wire segment 511 that are parallel to each other and are conducted with each other, the fourth straight conducting wire segment 512 and the first straight conducting wire segment 511 are both provided with a magnet 540, and by designing the magnetic poles of the magnet 540 provided on the first straight conducting wire segment 511 and the fourth straight conducting wire segment 512, the direction of the magnetic field received by the fourth straight conducting wire segment 512 is opposite to the direction of the magnetic field received by the first straight conducting wire segment 511, so that the first straight conducting wire segment 511 and the fourth straight conducting wire segment 512 connected end to end can provide the mounting seat 330 with a driving action in the same direction under the action of the corresponding magnetic fields. In the case of this embodiment, the magnitude of the force applied to the mounting seat 330 can be increased, and by providing the first straight wire segment 511 and the fourth straight wire segment 512 with the magnets 540 respectively and making the magnetic poles of the magnets 540 provided thereon face opposite to the magnetic poles of the mounting seat 330, the regularity of the magnetic field generated by the magnets 540 corresponding to the first coil 510 can be increased, thereby preventing the magnetic field disturbance from adversely affecting the motion accuracy of the first coil 510.

Further, the first coil section may include a plurality of first straight conductor sections 511 and a plurality of fourth straight conductor sections 512, and the plurality of first straight conductor sections 511 and the plurality of fourth straight conductor sections 512 are alternately connected end to further improve the driving effect and stability provided by the first coil 510 for the mounting seat 330.

Moreover, based on the above embodiment, the driving mechanism 500 further includes the second coil 520, the second coil 520 includes the fifth straight conductor segment 522 and the second straight conductor segment 521, the second straight conductor segment 521 is connected with the fifth straight conductor segment 522 end to end, and the second straight conductor segment 521 and the fifth straight conductor segment 522 are respectively provided with the magnets 540, so that the direction of the magnetic field applied to the second straight conductor segment 521 is opposite to the direction of the magnetic field applied to the fifth straight conductor segment 522, and further, when a current is applied to the second coil 520, the second straight conductor segment 521 and the fifth straight conductor segment 522 can provide driving acting forces in the same direction for the mounting seat 330. Similarly, the second coil 520 may also include a plurality of second straight conductive segments 521 and a plurality of fifth straight conductive segments 522, and the plurality of second straight conductive segments 521 and the plurality of fifth straight conductive segments 522 are alternately connected end to end, so as to further improve the driving effect and stability provided by the second coil 520 for the mounting base 330.

In addition, based on the above embodiment, the driving mechanism 500 further includes the third coil 530, the third coil 530 includes the sixth straight conducting wire segment 532 and the third straight conducting wire segment 531, the third straight conducting wire segment 531 and the sixth straight conducting wire segment 532 are connected end to end, and the third straight conducting wire segment 531 and the sixth straight conducting wire segment 532 are respectively provided with the magnets 540, so that the acting direction of the magnetic field applied to the third straight conducting wire segment 531 is opposite to the acting direction of the magnetic field applied to the sixth straight conducting wire segment 532, and further, when a current is applied to the third coil 530, the third straight conducting wire segment 531 and the sixth straight conducting wire segment 532 can provide driving acting forces in the same direction for the mounting seat 330. Similarly, the third coil 530 may also include a plurality of third straight conductor segments 531 and a plurality of sixth straight conductor segments 532, and the plurality of third straight conductor segments 531 and the plurality of sixth straight conductor segments 532 are alternately connected end-to-end to further improve the driving effect and stability provided by the third coil 530 to the mounting base 330.

Certainly, in the case of adopting the technical solution disclosed in the above embodiment, the magnetic field generated by the magnet 540 respectively cooperating with the second coil 520 and the third coil 530 inevitably generates a magnetic field action on the first coil 510, and therefore, in the design process of the lens module, the magnetic field actions respectively received by the first coil 510, the second coil 520 and the third coil 530 can be tested and controlled, so as to ensure that the magnitudes and directions of the magnetic field strengths received by the corresponding parts of the first coil 510, the second coil 520 and the third coil 530 are substantially the same, thereby ensuring that the precision is high when the driving mechanism 500 is used to move the mounting base 330 relative to the base 120.

As mentioned above, the lens 310 may be mounted on the base 120, and optionally, the lens module further includes the bottom plate 130, and the bottom plate 130 may provide a bearing function for the lens 310, the mounting seat 330, and the like, and facilitate the lens module to form an integral structural member. The base plate 130 may be made of a hard material such as metal or plastic, and the base 120 may be supported on the base plate 130, and the base 120 and the base plate 130 may be fixedly connected by adhesion or the like. In addition, the lens module may further include a housing 110, the housing 110 covers the base 120 and the lens 310, and the mounting seat 330, the photosensitive chip 320, the driving mechanism 500, and the like may also be disposed in the housing 110, so as to provide a protection function for the aforementioned devices by using the housing 110; moreover, by fixedly connecting the housing 110 and the base plate 130, other devices in the lens module can be enclosed in the space enclosed by the housing 110 and the base plate 130. Of course, in order to ensure that the external light can be incident into the lens 310 and be captured by the light sensing chip 320, a light through hole needs to be formed in the housing 110, and meanwhile, in order to prevent impurities such as external dust from entering the housing 110 from the light through hole of the housing 110, the light through hole may be provided with an infrared filter 360.

Moreover, in the above embodiment, the photosensitive chip 320 may be electrically connected to a power supply device such as a battery of the electronic device through the flexible circuit board 700, and more specifically, the lens module may further include a connector 340, the photosensitive chip 320 may be electrically connected to the connector 340 through the flexible circuit board 700, and the connector 340 may be connected to a main board of the electronic device, so that the battery of the electronic device may supply power to the photosensitive chip 320 through the main board and adapt to a connection rule in the electronic device.

As described above, the opposite sides of the photo sensor chip 320 may be provided with the flexible circuit boards 700, and the photo sensor chip 320 can be arranged in a "suspended" manner under the action of the flexible circuit boards 700 on the two sides. More specifically, two flexible circuit boards 700 are disposed on one side of the bottom plate 130 where the lens 310 is located, the two flexible circuit boards 700 are disposed on two opposite sides of the lens 310, and each flexible circuit board 700 is connected to the photosensitive chip 320 and the base 120, so as to provide a supporting function for the photosensitive chip 320 in a direction perpendicular to the bottom plate 130, so that the photosensitive chip 320 and the bottom plate 130 are spaced from each other, thereby ensuring that the photosensitive chip 320 has a capability of moving relative to the bottom plate 130, so that the lens module can perform anti-shake operation.

In order to improve the deformation capability of the flexible circuit board 700 to accommodate the relative movement 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, wherein the connecting portion 720 is located between the lens 310 and the base plate 130, and the connecting portion 720 may be connected to both the photosensitive chip 320 and the connector 340 to serve as a transmission medium for electrical signals, control signals and the like between the photosensitive chip 320 and the connector 340. The two opposite sides of the lens 310 are respectively provided with a limiting portion 710, and each limiting portion 710 is arranged at an interval with the bottom plate 130, so that the photosensitive chip 320 can be mutually spaced from the bottom plate 130 through the limiting portions 710, and the photosensitive chip 320 is ensured to have the capability of moving relative to the base 120 (and the bottom plate 130), and the limiting portions 710 are further used for providing a supporting function for the photosensitive chip 320 in the direction perpendicular to the bottom plate 130, and under the combined action of the two limiting portions 710, the photosensitive chip 320 can be ensured to be arranged on one side of the bottom plate 130 where the lens 310 is located in a suspension manner.

Each limiting portion 710 includes a first connecting section 711, a deforming section 712, and a second connecting section 713 that are sequentially connected along the optical axis direction of the lens 310, each first connecting section 711 is fixedly connected with the mounting base 330, and each second connecting section 713 is fixedly connected with the base 120, so that the limiting portion 710 can provide an installation function for the connection relationship between the photosensitive chip 320 and the base 120, and it is ensured that the photosensitive chip 320 and the installation function can be disposed at one side of the bottom plate 130 at intervals. Specifically, the first connection section 711 and the mounting seat 330, and the second connection end and the base 120 may be fixedly connected by adhesion or the like.

Meanwhile, each deformation section 712 is provided with a plurality of through long holes 712a, each through long hole 712a extends along the optical axis direction, and the plurality of through long holes 712a on each deformation section 712 are distributed at intervals along the direction perpendicular to the bottom plate 130, so that the deformation section 712 forms a structure similar to a grid, and the thickness of the deformation section 712 is relatively small because the deformation section 712 belongs to a part of the flexible circuit board 700, which enables the deformation section 712 to provide a good supporting function for the photosensitive chip 320 in the direction perpendicular to the bottom plate 130, and also enables the deformation section 712 to ensure that the photosensitive chip 320 can form a smooth movable fit relation with the base 120 under the self-deformation effect, thereby improving the action precision of the photosensitive chip 320.

As described above, in the case where the mount 330 is moved relative to the base 120 by the driving mechanism 500, both the first straight wire segment 511 and the second straight wire segment 521 may be fixed to one of the base 120 and the mount 330, and the magnet 540 may be fixed to the other of the base 120 and the mount 330, ensuring that the first straight wire segment 511 and the second straight wire segment 521 can move the mount 330 relative to the base 120. In an embodiment of the present application, the first straight wire segment 511 and the second straight wire segment 521 may be both fixed to the mounting seat 330, and the magnet 540 and the base 120 are relatively fixed, in which case, since the base 120 may be a component of the lens assembly for forming a fixed connection relationship with a component of an electronic device, such as a housing or a middle frame, for example, the base 120 may be used as a reference system, and 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 magnetic field distribution generated by the magnet 540 in the driving mechanism 500 may not be changed due to the influence of other magnetic elements in the electronic device on the magnet 540 due to the movement of the magnet 540 relative to the component of the electronic device, such as the housing, etc., so that the movement tracks of the first straight wire segment 511 and the second straight wire segment 521 may be more controllable, and the movement precision is relatively higher.

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 correspondingly controlled based on the actual conditions such as the magnitude and direction of the magnetic field strength respectively received by the first straight wire segment 511 and the second straight wire segment 521 in the driving mechanism 500 according to the obtained shake direction and magnitude of the lens module, so that the driving mechanism 500 can make the mount 330 generate the displacement with the same shake magnitude and opposite direction with respect to the base 120 (or the lens 310), and the lens module can achieve the anti-shake purpose.

In order to control the parameter of the relative displacement between the mount 330 and the base 120 more precisely, optionally, the lens module may further include a plurality of hall displacement sensors, and the first straight wire segment 511 and the second straight wire segment 521 are respectively and correspondingly provided with hall position sensors, under the effect of the corresponding hall position sensors, a more precise relative displacement amount and displacement direction between the mount 330 and the base 120 may be obtained, so that the output parameter of the driving mechanism 500 may be controlled in a feedback adjustment manner based on the detection result of the corresponding hall sensor, so as to prevent the driving mechanism 500 from being affected by unknown factors in the action process, which causes a difference between the actual driving result and the preset driving result, and ensure that the driving precision of the driving mechanism 500 is higher.

More specifically, the hall sensors may be disposed on one side of each of the first straight wire segment 511 and the second straight wire segment 521, and in the case that the lens module is provided with the third straight wire segment 531, the hall sensors may be correspondingly disposed on the third straight wire segment 531. In addition, in the above embodiment, the driving mechanism 500 may be provided with the first coil 510, the second coil 520 and the third coil 530 to drive the mount 330 to move relative to the base 120, in which case, a hall position sensor may be provided inside the first coil 510, i.e., between the first straight wire segment 511 and the fourth straight wire segment 512, so that the same hall sensor can acquire the relative position between the first coil 510 and the base 120 through the spaces between the respective detectors and the first straight wire segment 511 and the fourth straight wire segment 512, thereby improving the monitoring accuracy of the position of the first coil 510. Similarly, a hall position sensor may also be correspondingly disposed between the second straight conductor segment 521 and the fifth straight conductor segment 522, so as to detect positions of the second straight conductor segment 521 and the fifth straight conductor segment 522 relative to the base 120 at the same time; a hall position sensor may also be correspondingly disposed between the third straight wire segment 531 and the sixth straight wire segment 532, so as to detect the positions of the third straight wire segment 531 and the sixth straight wire segment 532 relative to the base 120, which can achieve the purpose of high-precision monitoring of the relative position between the mounting base 330 and the base 120 under the condition that the number of the hall position sensors is relatively small.

As described above, light outside the lens module can be incident into the lens 310 to be received by the photo sensor chip 320 located on the light emitting side of the lens 310. In addition, in the above embodiment, the lens module may be provided with the housing 110, and the light outside the housing 110 can be ensured to be incident into the housing 110 by setting the light through hole on the housing 110. Therefore, in the process of assembling 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 is opposite to the light-passing hole, so that the light outside the housing 110 can be incident into the housing 110 from the light-passing hole and incident into the photosensitive chip 320 through the lens 310.

In another embodiment of the present application, in order to increase the zoom factor 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 direction of the multi-curved prism 350 is perpendicular to the light emergent direction thereof, that is, the multi-curved prism 350 can change the propagation direction of the light, so that the optical axis of the lens 310 can be set perpendicular to the light incident direction of the lens module.

Moreover, the multi-curved prism 350 can be fixed to the base 120 by the bonding or clamping, and the multi-curved prism 350 is disposed on the light incident side of the lens 310, so that the light outside the lens module can be incident into the lens 310 after exiting through the multi-curved prism 350, and finally received by the photo sensor chip 320.

Based on any of the above embodiments, the present application further discloses an electronic device, which includes the lens module disclosed in any of the above embodiments, and certainly, the electronic device may further include other devices such as a battery, a display module, and a processor, and the text is not described one by one in consideration of brevity.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A lens module comprises a base (120), a lens (310), a photosensitive chip (320), a mounting seat (330) and a driving mechanism (500),

the lens (310) is mounted on the base (120), the photosensitive chip (320) is fixed on the mounting seat (330), the photosensitive chip (320) is arranged on the light emitting side of the lens (310), and the mounting seat (330) is movably arranged relative to the base (120);

the driving mechanism (500) comprises a first straight wire section (511), a second straight wire section (521) and a magnet (540), wherein the first straight wire section (511) extends along a first direction perpendicular to an optical axis of the lens (310), the second straight wire section (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 section (511) and the second straight wire section (521), the first straight wire section (511) and the second straight wire section (521) are both located in a magnetic field of the magnet (540), and the driving mechanism (500) is used for driving the mounting base (330) to move relative to the base (120) along the first direction and/or the second direction.

2. The lens module as claimed in claim 1, wherein the driving mechanism (500) further comprises a third straight wire segment (531), the third straight wire segment (531) being disposed parallel to the first straight wire segment (511) and distributed along the first direction, the third straight wire segment (531) being located in the magnetic field of the magnet (540);

under the condition that the directions of magnetic fields borne by the first straight wire section (511) and the third straight wire section (531) are the same, controlling currents with opposite directions to be introduced into the first straight wire section (511) and the third straight wire section (531), or under the condition that the directions of the magnetic fields borne by the first straight wire section (511) and the third straight wire section (531) are opposite, controlling the directions of the currents introduced into the first straight wire section and the third straight wire section to be the same, so that the driving mechanism (500) drives the mounting seat (330) to rotate relative to the lens (310) along the direction around the optical axis of the lens (310).

3. The lens module according to claim 2, wherein the second straight conductor segment (521) is located between the first straight conductor segment (511) and the third straight conductor segment (531) along the first direction.

4. The lens module as claimed in claim 1, wherein the number of the magnets (540) is plural, and at least one magnet (540) is provided to each of the first straight wire segment (511) and the second straight wire segment (521).

5. The lens module as claimed in claim 1, wherein the driving mechanism (500) comprises a first coil (510), the first coil (510) comprises a fourth straight line segment (512) and the first straight line segment (511), the fourth straight line segment (512) and the first straight line segment (511) are parallel to each other and are in conduction with each other, the magnets (540) are disposed on the fourth straight line segment (512) and the first straight line segment (511), and a direction of a magnetic field applied to the fourth straight line segment (512) is opposite to a direction of a magnetic field applied to the first straight line segment (511).

6. The lens module as claimed in claim 1, wherein the lens module comprises 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) comprises a limiting part (710) and a connecting part (720), the connecting part is located between the lens (310) and the bottom plate (130), the connecting part (720) is arranged on two opposite sides of the lens (310), and the limiting parts (710) and the bottom plate (130) are arranged at intervals;

each limiting portion (710) comprises a first connecting section (711), a deformation section (712) and a second connecting section (713), wherein the first connecting section (711), the deformation section (712) and the second connecting section (713) are sequentially connected in the optical axis direction of the lens (310), each first connecting section (711) is fixedly connected with the mounting seat (330), each second connecting section (713) is fixedly connected with the base (120), each deformation section (712) is provided with a plurality of through long holes (712 a) extending in the optical axis direction, and the through long holes (712 a) in any deformation section (712) are distributed at intervals in the direction perpendicular to the bottom plate (130).

7. The lens module according to claim 1, wherein the first straight wire section (511) and the second straight wire section (521) are fixed to the mount (330), and the magnet (540) is fixed to the base (120).

8. The lens module according to claim 1, further comprising a plurality of Hall position sensors, wherein the Hall position sensors are respectively disposed on the first straight wire section (511) and the second straight wire section (521).

9. The lens module as claimed in claim 1, further comprising a multi-curved prism (350), wherein the light incident direction of the multi-curved prism (350) is perpendicular to the light emergent direction thereof, the multi-curved prism (350) is fixed to the base (120), and the multi-curved prism (350) is disposed on the light incident side of the lens (310).

10. An electronic device, comprising the lens module of any one of claims 1-9.