Camera module, electronic device, focusing method, and optical axis correction method

Abstract

The application discloses a camera module, an electronic device, a focusing method and an optical axis correction method. The camera module comprises at least two lenses and an adjusting module. The at least two lenses are arranged at intervals along the optical axis direction of the camera module. The adjusting module is suitable for driving at least one of the at least two lenses to translate and / or swing relative to at least one of the other lenses to correct the coaxiality and / or parallelism of the optical axis direction of the at least two lenses. The parallelism or coaxiality of the optical axes of different lenses of the camera module of the application can be adjusted, the production yield of the camera module is improved, and the shooting effect is ensured.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of camera technology, in particular, to a camera module, an electronic device applying the camera module, a focusing method based on the camera module and an optical axis correction method based on the camera module. BACKGROUND

[0002] In order to meet the needs of shooting at any time, electronic devices such as mobile phones and tablets are usually equipped with cameras. However, in the related art, the production yield of the camera is low and the shooting effect is poor. SUMMARY

[0003] The present disclosure is based on the discovery and realization of the inventors of the following facts and problems:

[0004] In order to realize the focusing function, the camera in the related art is usually provided with two groups of lenses, which need to be arranged in parallel or coaxially. When focusing adjustment is needed, the two groups of lenses can be moved relative to each other along the optical axis direction. However, due to the limitations of machining precision, assembly error and other factors, the parallelism or coaxiality of the optical axes of the two groups of lenses will deviate, resulting in low production yield and poor shooting effect of the camera.

[0005] The present disclosure aims to at least partially solve one of the technical problems in the related art.

[0006] To this end, the present disclosure provides a camera module, the parallelism or coaxiality of the optical axes of different lenses of the camera module is adjustable, which improves the production yield of the camera module and ensures the shooting effect.

[0007] The present disclosure also provides an electronic device applying the camera module.

[0008] The present disclosure also provides a focusing method based on the camera module.

[0009] The present disclosure also provides an optical axis correction method based on the camera module.

[0010] The camera module of the present disclosure comprises:

[0011] at least two lenses, the at least two lenses are arranged in parallel along the optical axis direction of the camera module;

[0012] an adjustment module, the adjustment module is adapted to drive at least one of the at least two lenses to translate and / or oscillate relative to at least one of the other lenses to correct the coaxiality and / or parallelism of the optical axis direction of the at least two lenses.

[0013] The parallelism or coaxiality of the optical axes of different lenses of the camera module can be adjusted, thereby improving the production yield of the camera module and ensuring the shooting effect.

[0014] In some embodiments, the adjustment module comprises a first module and a second module, and a magnetic force can be generated between the first module and the second module to drive at least one lens to translate and / or oscillate relative to at least another lens.

[0015] In some embodiments, one of the first module and the second module comprises a plurality of adjustment coils, and the other one comprises a plurality of magnets, and the plurality of magnets are arranged opposite to the plurality of adjustment coils one by one.

[0016] In some embodiments, an inner carrier is included, at least one lens is arranged in the inner carrier, a plurality of bosses are arranged on the outer periphery of the inner carrier, and the plurality of bosses are arranged at intervals along the circumference of the inner carrier, and each adjustment coil is sleeved on the outer periphery of each boss.

[0017] In some embodiments, each adjustment coil is rotationally fitted on the outer periphery of each boss.

[0018] In some embodiments, the camera module comprises a frame body, at least two lenses comprise a first lens and a second lens, the first lens is arranged on the frame body, the second lens is arranged in the inner carrier, the inner carrier is fitted in the frame body, the plurality of magnets are connected to the frame body, and the second lens and the inner carrier can translate and / or oscillate relative to the first lens and the frame body.

[0019] In some embodiments, the camera module comprises a first elastic member, the first elastic member is connected between the inner carrier and the frame body, and the first elastic member can be elastically deformed to enable the second lens and the inner carrier to translate and / or oscillate relative to the first lens and the frame body.

[0020] In some embodiments, the frame body comprises an outer carrier and a support frame, the outer carrier is provided with a plurality of assembly grooves, each magnet is fitted in each assembly groove, and the support frame is connected to the outer carrier, and the first lens is arranged on the support frame.

[0021] In some embodiments, the camera module comprises a housing, at least part of the frame body is arranged in the housing, and the frame body is movable relative to the housing, the housing is provided with an opening, and at least part of the first lens protrudes from the opening of the housing.

[0022] In some embodiments, the camera module comprises a second elastic member connected between the housing and the frame body, the second elastic member being elastically deformable to adjust the relative position of the frame body and the housing.

[0023] In some embodiments, the camera module comprises an anti-shake module acting between the housing and the frame body, and the anti-shake module is adapted to drive the frame body to move relative to the housing in a direction orthogonal to the optical axis direction.

[0024] In some embodiments, the housing comprises a shell and a base, the shell being connected to the base, the base being provided with an electric guide member therein, the electric guide member being electrically connected to the second elastic member, and the anti-shake module being arranged in the base.

[0025] In some embodiments, at least one of the lenses is relatively movable along the optical axis direction relative to at least one other lens.

[0026] The electronic device of the embodiments of the present disclosure comprises a camera module, which is the camera module of any of the above embodiments.

[0027] The focusing method of the embodiments of the present disclosure comprises the following steps: passing the same direction and same size current into each adjusting coil.

[0028] The optical axis correction method of the embodiments of the present disclosure comprises the following steps: passing the different direction and / or different size current into each adjusting coil. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a cross-sectional view of the camera module of the embodiments of the present disclosure.

[0030] Figure 2 is Figure 1 is an exploded view of the first lens and the frame body in

[0031] Figure 3 is Figure 1 is an exploded view of the second lens and the inner carrier in

[0032] Figure 4 is Figure 1 is an exploded view of the housing in

[0033] REFERENCE SIGNS:

[0034] the first lens 1;

[0035] the second lens 2;

[0036] the frame body 3; the support frame 31; the outer carrier 32;

[0037] the inner carrier 4; the boss 41;

[0038] Adjustment module 5; First module 51; Magnet 511; Second module 52; Adjustment coil 521;

[0039] First elastic element 6; First element 61; Second element 62;

[0040] 7. Housing 7; 71. Outer shell 7; 72. Base 7;

[0041] Second elastic element 8;

[0042] Image stabilization module 9. Detailed Implementation

[0043] Embodiments of this disclosure are described in detail below, with examples of these embodiments illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this disclosure, and should not be construed as limiting it.

[0044] like Figures 1 to 4 As shown, the camera module of this embodiment includes at least two lenses and an adjustment module 5.

[0045] At least two lenses are arranged at intervals along the optical axis of the camera module. For example... Figure 1 As shown, the optical axis of the camera module can be vertical, and there can be two lenses, which can be arranged at intervals in the vertical direction.

[0046] In some other embodiments, there may be three, four, five, etc., lenses. In this case, the multiple lenses can be divided into two groups, each group can have more than one lens, and the two groups of lenses can be arranged at intervals in the vertical direction.

[0047] The adjustment module 5 is adapted to drive at least one of the at least two lenses to translate and / or oscillate relative to at least another lens to correct the coaxiality and / or parallelism of the optical axis directions of the at least two lenses.

[0048] For example, when there are two lenses, the upper lens can remain stationary, while the adjustment module 5 can drive the lower lens to move horizontally (left and right, front and back, etc.) relative to the upper lens, thereby achieving the coaxiality correction of the optical axis direction of the two lenses.

[0049] It should be noted that in some other embodiments, the adjustment module 5 can also drive the lower lens to swing. For example, when the optical axis of the lower lens forms an angle with the vertical direction, the optical axis can be corrected to align with the vertical direction by driving the lower lens to swing, thereby adjusting the parallelism of the optical axis directions of different lenses. After the parallelism of the optical axis directions of different lenses is corrected, coaxiality adjustment can also be performed.

[0050] The camera module of the embodiments of the present disclosure can correct the optical axes of different lenses by using the adjusting module 5 after the camera module is assembled, so that the optical axes of different lenses can have better parallelism and coaxiality, thereby on the one hand, avoiding the problem of reducing the production yield due to poor parallelism and coaxiality of the optical axes caused by factors such as assembly accuracy and machining accuracy, and on the other hand, due to the correctability of the parallelism and coaxiality of the optical axes, the shooting effect and imaging quality can be improved, and the use needs of users for high-quality video shooting can be met.

[0051] In some embodiments, as shown in Figure 1 The adjusting module 5 can include two independent parts, which are a first module 51 and a second module 52, and a magnetic force can be generated between the first module 51 and the second module 52 to drive at least one lens to translate and / or oscillate relative to at least another lens.

[0052] The adjusting mode of the magnetic force is simple to operate, which can be achieved by passing current, and the adjusting mode is flexible and variable, which can be achieved by introducing currents of different sizes or different directions, thereby fully meeting the correction needs of the optical axis direction.

[0053] In some embodiments, one of the first module 51 and the second module 52 includes a plurality of adjusting coils 521, and the other includes a plurality of magnets 511, and the plurality of magnets 511 are arranged one by one opposite to the plurality of adjusting coils 521.

[0054] As shown in Figure 1 and Figure 3 The adjusting coil 521 can be provided with four adjusting coils 521, and the four adjusting coils 521 can be arranged in a circumferential direction of the lower lens. In use, different currents (different in direction and size) can be introduced into each adjusting coil 521, so that different adjusting coils 521 generate different forces. The combined force of the forces of the adjusting coils 521 can adjust the position of the lower lens, thereby meeting the needs of optical axis correction and adjustment.

[0055] It can be understood that in other embodiments, the adjusting coil 521 can also be provided with two, three, five, six, etc. The plurality of adjusting coils 521 can be arranged in a circumferential direction of the second lens 2.

[0056] As shown in Figures 1 to 3 The magnet 511 can be a permanent magnet 511, for example, a magnet. The number of magnets 511 can be the same as the number of adjusting coils 521, and the plurality of magnets 511 can be arranged on the outer circumferential side of the plurality of adjusting coils 521. In the inner-outer direction, the plurality of magnets 511 can be arranged one by one opposite to the plurality of adjusting coils 521.

[0057] During assembly, each magnet 511 can correspond to one adjusting coil 521 along the radial direction of the lower lens, and the N and S poles of the magnet 511 can be arranged in sequence along the up-down direction, wherein the N pole of the magnet 511 can correspond to the upper half of the corresponding adjusting coil 521, and the S pole of the magnet 511 can correspond to the lower half of the corresponding adjusting coil 521. During use, by passing current into each adjusting coil 521, the adjusting coil 521 can generate magnetic force with the magnet 511 opposite to it under the action of the magnetic field of the magnet 511, so as to drive the movement adjustment of the lower lens relative to the upper lens.

[0058] The arrangement of the plurality of magnets 511 and the plurality of adjusting coils 521 can on the one hand enable each magnet 511 and the corresponding adjusting coil 521 to generate magnetic force independently, thereby improving the flexibility of operation, and on the other hand can ensure the stability of adjustment, that is, when an individual magnet 511 or adjusting coil 521 is damaged, the remaining magnets 511 and adjusting coils 521 can still achieve magnetic force adjustment.

[0059] In some embodiments, the camera module includes an inner carrier 4, at least one lens is arranged in the inner carrier 4, and the outer circumferential side of the inner carrier 4 is provided with a plurality of bosses 41, the plurality of bosses 41 are arranged at intervals along the circumferential direction of the inner carrier 4, and each adjusting coil 521 is sleeved on the outer circumferential side of each boss 41.

[0060] As shown in Figure 1 and Figure 3 , the inner carrier 4 can have a ring structure, and the lower lens can be fixed in the inner carrier 4, for example, the lower lens can be connected to the inner carrier 4 by threaded connection, fastener fixation, etc. During use, the inner carrier 4 and the lower lens can be considered as a whole and can move synchronously.

[0061] The outer circumferential side of the inner carrier 4 can be provided with a plurality of bosses 41, and the number of bosses 41 can be the same as the number of adjusting coils 521, and the adjusting coil 521 can be sleeved on the outer circumferential side of the corresponding boss 41.

[0062] Optionally, each adjusting coil 521 is rotationally fitted on the outer circumferential side of each boss 41, for example, as shown in Figure 3 , a long hole can be arranged in the adjusting coil 521, and the boss 41 can extend along the circumferential direction of the inner carrier 4, and when the adjusting coil 521 is sleeved on the boss 41, the rotation of the adjusting coil 521 can be achieved by the blocking cooperation of the hole wall of the long hole and the side wall of the boss 41.

[0063] Therefore, on one hand, the installation and fixing of the adjusting coil 521 are facilitated, and the maintenance and replacement of the adjusting coil 521 are facilitated; on the other hand, the limiting action can be formed between the boss 41 and the adjusting coil 521, so that the installation precision of the adjusting coil 521 and the structural stability in use can be ensured.

[0064] In some embodiments, the camera module comprises a frame body 3, the at least two lenses comprise a first lens 1 and a second lens 2, the first lens 1 and the second lens 2 are arranged in the frame body 3, the first lens 1 is arranged in the frame body 3, the second lens 2 is arranged in an inner carrier 4, the inner carrier 4 is fitted in the frame body 3, a plurality of magnets 511 are connected with the frame body 3, and the second lens 2 and the inner carrier 4 are translatable and / or swingable relative to the first lens 1 and the frame body 3.

[0065] As shown in Figure 1 , the frame body 3 can be hollow, for example, the frame body 3 can be a tubular structure, the axis of the frame body 3 can be arranged along the up-down direction, the first lens 1 can be fixed at the top end of the frame body 3, the second lens 2 can be assembled in the frame body 3 and located below the first lens 1, and the second lens 2 can be connected with the frame body 3 by using a spring piece or other components with certain elastic deformation performance, so as to meet the displacement requirement of the second lens 2. The adjustment module 5 can act between the frame body 3 and the second lens 2, and the driving adjustment of the second lens 2 can be realized by the adjustment module 5.

[0066] The arrangement of the frame body 3 facilitates the connection and arrangement of the first lens 1 and the second lens 2, and the integration and integration of the design of the first lens 1 and the second lens 2 can be realized, which facilitates subsequent installation and disassembly.

[0067] In some embodiments, the camera module comprises a first elastic member 6, the first elastic member 6 is connected between the inner carrier 4 and the frame body 3, and the first elastic member 6 is elastically deformable to enable the second lens 2 and the inner carrier 4 to be translatable and / or swingable relative to the first lens 1 and the frame body 3.

[0068] As shown in Figure 1 and Figure 3 , the first elastic member 6 can comprise two parts, the two parts being a first piece 61 and a second piece 62, the first piece 61 and the second piece 62 can both be annular structures, and the first piece 61 and the second piece 62 can both be integrations of spring pieces and spring wires. The spring piece can be a metal spring piece, and the spring wire can be a reciprocatingly coiled metal wire.

[0069] In the installation, the first piece 61 can be arranged on the upper side of the inner carrier 4, the inner side of the first piece 61 can be connected and fixed with the upper surface of the inner carrier 4 through the corresponding elastic sheet, and the outer side of the first piece 61 can be connected and fixed with the frame body 3 through the corresponding elastic sheet. The second piece 62 can be arranged on the lower side of the inner carrier 4, the inner side of the second piece 62 can be connected and fixed with the inner carrier 4 through the corresponding elastic sheet, and the outer side of the second piece 62 can be connected and fixed with the frame body 3 through the corresponding elastic sheet. The arrangement of the first piece 61 and the second piece 62 can enhance the stability of the connection between the inner carrier 4 and the frame body 3 and the compactness of the assembly.

[0070] In use, the displacement adjustment can be achieved by the change of the elastic wire of the first piece 61 and the elastic wire of the second piece 62, so as to meet the needs of the diagonal adjustment and the optical axis correction between the first lens 1 and the second lens 2.

[0071] In some embodiments, as shown in Figure 1 and Figure 2 The frame body 3 includes an outer carrier 32, which can be generally annular, and the outer carrier 32 is provided with a plurality of assembly grooves arranged on the inner circumferential wall of the outer carrier 32, and each magnet 511 is fitted in each assembly groove. For example, the slot of the assembly groove can face downward, and the magnet 511 can be inserted into the assembly groove from the lower side of the outer carrier 32. Thus, the installation and disassembly of the magnet 511 are facilitated.

[0072] Optionally, the assembly groove has an opening facing the inner side of the outer carrier 32, the magnet 511 is inserted into the assembly groove, and part of the magnet 511 can be exposed from the opening of the assembly groove, so as to avoid the isolation of the magnetic field of the magnet 511 by the outer carrier 32 and ensure the magnetic field strength.

[0073] In some embodiments, as shown in Figure 1 and Figure 2 The frame body 3 includes a support frame 31 connected with the outer carrier 32, for example, the support frame 31 can be fixed on the upper side of the outer carrier 32, and the support frame 31 can be detachably connected with the outer carrier 32 through buckling or the like. The first lens 1 is arranged in the support frame 31, for example, the first lens 1 can be buckled or screwed with the support frame 31. The split arrangement of the frame body 3 facilitates the assembly of the second lens 2 in the frame body 3 and the processing of the frame body 3.

[0074] In some embodiments, the camera module includes a housing 7, at least part of the frame body 3 is arranged in the housing 7, and the frame body 3 is movable relative to the housing 7, the housing 7 is provided with an opening, and at least part of the first lens 1 protrudes from the opening of the housing 7.

[0075] As shown in Figure 1As shown, the opening of the shell 7 can be arranged at the top side of the shell 7, the outer carrier 32, the inner carrier 4 and the second lens 2 can be assembled in the shell 7, the support frame 31 can extend out of the opening of the shell 7, and the support frame 31 can be in clearance fit with the opening of the shell 7, so as to meet the need that the frame body 3 can move relative to the shell 7 in the horizontal direction, and the first lens 1 as a whole can be located outside the shell 7.

[0076] The shell 7 has a protection effect on the one hand, and on the other hand, the shell 7 can meet the need of electrical connection and signal communication between the camera module and the outside.

[0077] In some embodiments, the camera module comprises a second elastic member 8 connected between the shell 7 and the frame body 3, and the second elastic member 8 can be elastically deformed to adjust the relative position of the frame body 3 and the shell 7.

[0078] As shown in Figure 1 and Figure 2 The second elastic member 8 can be a suspension wire, and a plurality of second elastic members 8 can be arranged, for example, four second elastic members 8 can be arranged, and the plurality of second elastic members 8 can be arranged in a circumferential direction of the inner carrier 4. The second elastic member 8 can be arranged in an up-down direction, the top end of each second elastic member 8 can be connected with the inner carrier 4, and the bottom end of each second elastic member 8 can be connected with the bottom of the shell 7. The plurality of second elastic members 8 can support and fix the inner carrier 4 in the outer carrier 32 on the one hand, and can meet the need that the inner carrier 4 and the second lens 2 move relative to the first lens 1 on the other hand.

[0079] In some embodiments, the camera module comprises an anti-shake module 9 acting between the shell 7 and the frame body 3, and the anti-shake module 9 is adapted to drive the frame body 3 to move relative to the shell 7 in a direction orthogonal to the optical axis direction.

[0080] As shown in Figure 1 and Figure 2 The anti-shake module 9 can be annular, and the anti-shake module 9 can be fixed with the shell 7 and located below the outer carrier 32. The anti-shake module 9 can correspond to a plurality of magnets 511 on the outer carrier 32.

[0081] For example, the anti-shake module 9 can be an FPC coil, a plurality of annular coils can be arranged in the FPC coil, the number of annular coils can be consistent with the number of magnets 511, the FPC coil is arranged parallel to the bottom surface of the magnet 511, and each annular coil can be opposite to the corresponding magnet 511 in the up-down direction.

[0082] When the FPC coil is powered, an acting force perpendicular to the optical axis direction can be generated according to the magnetic field of the magnet 511, and the at least two annular coils arranged in the orthogonal direction can drive the magnet 511 to drive the first lens 1, the second lens 2, the frame body 3 and other components to move in any direction in the plane perpendicular to the optical axis direction, that is, the optical anti-shake function of the camera module can be realized.

[0083] In some embodiments, the shell 7 includes a housing 71 and a base 72, the housing 71 is connected with the base 72, the base 72 is provided with an electric guide connected with the second elastic member 8 in an electrical manner, and the anti-shake module 9 is arranged in the base 72.

[0084] As shown in Figure 1 and Figure 4 , the shell 7 can be provided in a split manner, the base 72 can be annular, and the base 72 can be fixed to the bottom of the housing 71 in a snap-fit manner, thereby facilitating the installation and disassembly of the components such as the frame body 3 and the second lens 2 located in the shell 7.

[0085] The electric guide can be a metal sheet, a plurality of electric guides can be pre-buried in the base 72, a plurality of metal terminals can be arranged on the bottom of the base 72, the electric guides can be electrically connected with the metal terminals, and the electric guides can meet the communication needs. For example, the adjustment coil 521, the FPC coil, the first elastic member 6, the second elastic member 8 and the electric guide can be electrically connected by welding, thereby meeting the communication needs of the camera module.

[0086] As shown in Figure 2 and Figure 4 , the upper side of the base 72 can be provided with a cross-shaped groove, the anti-shake module 9 can be cross-shaped as a whole, and the anti-shake module 9 can be fitted in the cross-shaped groove to limit the position.

[0087] In some embodiments, at least one lens can be relatively moved along the optical axis direction relative to at least another lens. As shown in Figure 1 , two lenses can be arranged, the upper lens can remain stationary in use, and the adjustment module 5 can drive the lower lens to move along the up-down direction, thereby realizing the adjustment of the focal length (focus adjustment) of the two lenses and facilitating clear imaging.

[0088] It should be noted that in the present embodiment, the adjustment module 5 can meet the needs of focus adjustment, that is, the adjustment module 5 can have the functions of focus and optical axis direction correction of multiple lenses, thereby enriching the functions of the adjustment module 5, realizing multi-purpose use, and also making the overall structure relatively simple.

[0089] The electronic device of the present disclosure will be described below.

[0090] The electronic device of this disclosure includes a camera module, which can be the camera module described in the above embodiments. The electronic device can be a mobile phone, tablet, laptop, etc., or other electronic devices that require a camera module. The camera module of the electronic device of this disclosure has functions such as optical axis correction, autofocus, multi-fold optical zoom, and optical image stabilization, improving the production yield of the camera module and ensuring shooting effects and image quality.

[0091] The diagonal method according to embodiments of this disclosure is described below.

[0092] The focusing method of this disclosure includes the following steps:

[0093] A current of the same direction and magnitude is passed into each adjusting coil 521.

[0094] For example, such as Figure 3 As shown, four adjustment coils 521 can be provided, and the four adjustment coils 521 can be arranged at intervals along the circumferential direction. When it is necessary to adjust the focus of the first lens 1 and the second lens 2, the same current in the same direction and the same magnitude can be passed into each adjustment coil 521. At this time, each adjustment coil 521 can generate four forces of equal magnitude, and the directions of the four forces are all along the optical axis. Thus, the second lens 2 can be driven to move up and down relative to the frame 3 to realize the focus adjustment between the first lens 1 and the second lens 2.

[0095] The optical axis correction method according to embodiments of this disclosure is described below.

[0096] The optical axis correction method of this disclosure includes the following steps:

[0097] A current of different direction and / or different magnitude is passed into each adjusting coil 521.

[0098] For example, such as Figure 3 As shown, there can be four adjustment coils 521, which can be arranged at intervals along the circumferential direction. When there is a deviation between the optical axis of the first lens 1 and the optical axis of the second lens 2, currents of different directions, different magnitudes, or both different directions and magnitudes can be passed into each adjustment coil 521.

[0099] Thus, each adjustment coil 521 can generate forces in four directions, or forces of different magnitudes, or forces of different directions and magnitudes. The resultant force of the four forces can drive the second lens 2 to swing or translate in the horizontal direction, thereby achieving the correction of the optical axis direction of the first lens 1 and the optical axis direction of the second lens 2.

[0100] It should be noted that in some embodiments, the optical axis correction method can further include the following steps: dividing the at least two lenses into a first lens group and a second lens group, monitoring the orientation of the first lens group and / or the second lens group, and if the optical axis directions of the first lens group and the second lens group are different or not parallel, correcting the optical axis directions of the first lens group and the second lens group through the plurality of adjustment coils 521.

[0101] Specifically, the first lens group and the second lens group can each include one or more lenses. During use, orientation monitoring can be performed only on the first lens group or the second lens group. For example, the first lens group can not be adjusted in position after installation, and the second lens group can be adjusted in position. In this case, a coordinate system can be established based on the position of the first lens group, and the optical axis direction of the first lens group can be the Y-axis.

[0102] The established coordinate system can be previously input into the corresponding controller, and then the position of the second lens group can be monitored by means of a sensor (Hall sensor, infrared sensor, etc.). The orientation data monitored can be imported into the coordinate system and the optical axis direction of the second lens group can be analyzed. Then, the optical axis direction of the second lens group can be compared with the Y-axis (optical axis direction of the first lens group).

[0103] If the optical axis direction of the second lens group is not parallel or coaxial with the Y-axis, the translation distance or rotation angle required to correct the optical axis direction of the second lens group to be parallel or coaxial with the Y-axis can be calculated using an algorithm. Then, the direction and / or magnitude of the current required to be passed into each adjustment coil 521 can be calculated and guided using the calculated translation distance or rotation angle. Finally, the calculated current can be passed into each adjustment coil 521 to achieve optical axis correction.

[0104] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present disclosure and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present disclosure.

[0105] In addition, the terms "first", "second", "third", etc. are used herein only to describe different instances, and do not imply or suggest relative importance or a number of the technical features indicated. Thus, the features defined with "first", "second", etc. can include at least one of the features explicitly or implicitly. In the description of the present disclosure, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified and limited.

[0106] In the present disclosure, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection or communication with each other; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0107] In the present disclosure, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0108] In the present disclosure, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the present specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present specification and the features of different embodiments or examples, without contradiction.

[0109] Although the above embodiments have been shown and described, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present disclosure, and the changes, modifications, replacements and variations of the above embodiments made by those skilled in the art are within the protection scope of the present disclosure.

Claims

1. A camera module, comprising: The application relates to a camera module. The camera module comprises at least two lenses, and the at least two lenses are arranged along the direction of an optical axis of the camera module. An adjusting module is adapted to drive at least one of the at least two lenses to translate and / or swing relative to at least one of the other lenses to correct the coaxiality and / or parallelism of the optical axis of the at least two lenses. The adjusting module comprises a first module and a second module, and a magnetic force is generated between the first module and the second module to drive the at least one lens to translate and / or swing relative to the at least one of the other lenses.

2. The camera module of claim 1, wherein, One of the first module and the second module comprises a plurality of adjusting coils, and the other one comprises a plurality of magnets.

3. The camera module of claim 2, wherein, The plurality of magnets are arranged opposite to the plurality of adjusting coils.

4. The camera module of claim 3, wherein, An inner carrier is arranged inside the at least one lens, and a plurality of bosses are arranged on the outer periphery of the inner carrier.

5. The camera module of claim 3, wherein, Each adjusting coil is rotationally fitted on the outer periphery of each boss.

6. The camera module of claim 3, wherein, The camera module comprises a frame body, and the at least two lenses comprise a first lens and a second lens.

7. The camera module of claim 6, wherein, The first lens is arranged on the frame body, and the second lens is arranged inside the inner carrier.

8. The camera module of claim 7, wherein, The inner carrier is fitted in the frame body, and the plurality of magnets are connected to the frame body.

9. The camera module of claim 8, wherein, The second lens and the inner carrier can translate and / or swing relative to the first lens and the frame body.

10. The camera module of any one of claims 1-9, wherein, The camera module comprises a first elastic member connected between the inner carrier and the frame body.

11. An electronic device, comprising: The first elastic member can be elastically deformed to enable the second lens and the inner carrier to translate and / or swing relative to the first lens and the frame body.

12. A focusing method based on the camera module of any of the preceding claims 1-9, characterized in that, The frame body comprises an outer carrier and a support frame. The outer carrier is provided with a plurality of assembly grooves, and each magnet is fitted in each assembly groove.

13. An optical axis correction method based on the camera module according to any one of claims 1 to 9, characterized by, The support frame is connected to the outer carrier, and the first lens is arranged on the support frame. The camera module comprises a shell, and at least part of the frame body is arranged inside the shell. The frame body can move relative to the shell, and the shell is provided with an opening. At least part of the first lens extends out of the opening of the shell. The camera module comprises a second elastic member connected between the shell and the frame body. The second elastic member can be elastically deformed to adjust the relative position of the frame body and the shell. The camera module comprises an anti-shake module acting between the shell and the frame body. The anti-shake module is adapted to drive the frame body to move relative to the shell in a direction perpendicular to the direction of the optical axis. The shell comprises a housing and a base. The base is provided with an electric guide connected to the second elastic member. The anti-shake module is arranged on the base. At least one of the lenses can move relative to at least one of the other lenses along the direction of the optical axis. The camera module is according to any one of claims 1-10. The camera module comprises the following steps: The same direction and the same size of current are input into each adjusting coil. The camera module comprises the following steps: Different currents in different directions and / or of different magnitudes are fed into each of the adjustment coils.

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