Prism driving mechanism, lens driving device and camera module

Abstract

The utility model relates to a prism driving mechanism, a lens driving device and a camera module. The prism driving mechanism further comprises a first driving assembly which drives the movable frame to rotate relative to the base. The second driving assembly is used for driving the carrier to rotate around a carrier rotating shaft perpendicular to the rotating axis of the movable frame relative to the movable frame; the carrier is arranged in the movable frame, two opposite sides of the carrier are respectively connected with two opposite sides of the movable frame through rotating shaft groups, the rotating shaft groups form rotating shafts of the carrier, one rotating shaft group is a sphere, and the other rotating shaft group is a shaft body. The focusing device has the advantages that the problem of large friction between the movable frame and the carrier in the prior art is solved by utilizing the rotating shaft group, meanwhile, the positions and postures of the movable frame and the carrier are ensured to be accurate, and the influence on the focusing precision during relative movement is avoided.

Description

Technical Field

[0001] The present application belongs to the field of electronic equipment camera, and in particular to a prism driving mechanism, a lens driving device and a camera module. Background Art

[0002] Optical image stabilization in mobile photography is a technology for a stabilizing platform that aims to reduce the impact of camera shake and vibration on image stability. When taking photos with a mobile phone, the image may be blurry or distorted due to factors such as hand shaking and object movement. This is when the optical image stabilization technology can play an important role.

[0003] The camera's optical image stabilization technology uses a mechanical stabilizer to achieve adaptive adjustment of the camera as the external environment changes through the control unit's electronic system and motion sensor. That is, the shaking and vibration trajectory of the phone is determined based on external factors, and the shaking and vibration forces are balanced by controlling the position of the lens or the components of the camera sensor. This ensures the clarity and stability of the picture when shooting still photos or continuous dynamic videos.

[0004] Optical image stabilization uses a purely optical method for correction. Compared with digital image stabilization, it is more reliable and still has advantages in low light conditions. It can also focus quickly, the picture is more stable, and the captured images are clearer and more natural.

[0005] Patent CN113655611A discloses an anti-shake periscope module, including: a base, a rotating bracket relatively movable with the base, a prism bracket relatively movable with the rotating bracket, a prism embedded in the prism bracket, a frame embedded with the base, and a shell wrapped around the fixed base and the outer periphery of the frame; a first ball assembly, the first ball assembly includes a cylindrical base with a flat end and a first magnetic plate seat fixed on the plane of the cylindrical base, the first magnetic plate seat is provided with an embedding groove, a first magnetic plate is embedded in the embedding groove, and a first magnet embedding groove is provided on the end surface of the inclined base away from the prism. According to the present invention, the structure is simple, the motor performance and stable motor performance are improved, and the displacement control of the periscope motor is accurate, the power consumption is lower, and the reduced volume achieves a better anti-shake effect.

[0006] In the above patent, the rotation of the carrier is achieved by adding balls to the shaft, but this method has the following defects: the axial direction of the cylindrical base will move relative to the first base groove, causing motion interference, which seriously affects the anti-shake accuracy. Utility Model Content

[0007] The purpose of the present utility model is to provide a prism driving mechanism, a lens driving device and a camera module that can solve the above technical problems.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A prism drive mechanism, including a base;

[0010] The prism driving mechanism further comprises:

[0011] A first driving component for driving the movable frame to rotate relative to the base; and a second driving component for driving the carrier to rotate relative to the movable frame around a carrier rotation axis perpendicular to the rotation axis of the movable frame;

[0012] The carrier is placed in the moving frame, and the opposite sides of the carrier and the opposite sides of the moving frame are connected by rotation axis groups respectively, and the rotation axis groups form the carrier rotation axis, and one of the rotation axis groups is a sphere, and the other rotation axis group is a shaft.

[0013] Furthermore, the prism driving mechanism further comprises an articulation group, wherein the articulation group is used to make the base and the moving frame have at least two connection points and at least one of the connection points is used as a fixed-point rotation center;

[0014] The connection points are distributed on the emergent optical axis or the incident optical axis; the hinge group includes at least two connection points distributed on the emergent optical axis and both of which are used as fixed-point rotations.

[0015] Furthermore, the hinge group includes a plurality of first protrusions (40) distributed on the output optical axis, and a plurality of first grooves corresponding to the first protrusions one by one, the arcuate convex surface of the first protrusion and the first groove are in tangential contact with each other and form at least two connection points for fixed-point rotation, any one of the first protrusion and the first groove is arranged on the base, and the remaining one is arranged on the movable frame.

[0016] Furthermore, the hinge group includes a connection point distributed on the incident light axis as a fixed-point rotation center and at least two connection points that move in arc trajectories, and at least two connection points that move in arc trajectories move on concentric spherical surfaces with the connection point of fixed-point rotation as the rotation center.

[0017] Furthermore, the hinge group includes a plurality of second protrusions distributed on the incident light axis, and second grooves corresponding one to one to the second protrusions, one of the plurality of second protrusions is in tangential contact with a second groove to form a connection point serving as a fixed-point rotation center, and the remaining second protrusions are in tangential contact with the remaining second grooves to form at least two connection points that move in an arc trajectory.

[0018] Furthermore, the first driving component and the second driving component are both electromagnetic driving components; the first driving component is distributed in a plane perpendicular to the incident light axis; the second driving component is distributed in the plane or in a vertical plane perpendicular to the plane.

[0019] Further, the rotating shaft group of the sphere matches the spherical recess, any one of the rotating shaft group of the sphere and the spherical recess is fixed to the moving frame, and the remaining one is fixed to the carrier;

[0020] The rotating shaft group of the shaft body cooperates with the shaft body positioning groove, and any one of the rotating shaft group of the shaft body and the shaft body positioning groove is fixed to the moving frame, and the remaining one is fixed to the carrier.

[0021] Furthermore, bosses are respectively provided on two opposite sides of the movable frame, one of the bosses is provided with the rotating shaft group which is a sphere, and the other boss is provided with the rotating shaft group which is a shaft;

[0022] The shaft body positioning groove is a V-shaped groove, and the rotating shaft group of the shaft body is in contact with two inclined surfaces of the V-shaped groove.

[0023] The application also provides a lens driving device, which includes the prism driving mechanism.

[0024] The present application also provides a camera module, which includes the lens driving device.

[0025] Compared with the existing technology, the advantages of the present application are: by utilizing the rotating axis group, the sphere can prevent axial movement of the axis, and the combination of the axis and the sphere can ensure the rotation accuracy and rotation smoothness, ensuring that the position and posture of the two are accurate, and avoiding the impact on the focusing accuracy during relative movement.

[0026] The shrapnel-free design can completely eliminate the risk of tilting around the X-axis.

[0027] At least two connection points are distributed on the X-axis or the Z-axis so that the carrier can rotate around the X-axis. Combined with the design of the rotating axis group, the magnetic interference problem of electromagnetic drive can be completely solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a finished assembly diagram of the main components of the prism drive mechanism of Example 1 of the utility model;

[0029] Figure 2 for Figure 1 An exploded left front view of the main components of the prism drive mechanism;

[0030] Figure 3 for Figure 1 An exploded right front view of the main components of the prism drive mechanism;

[0031] Figure 4 for Figure 1 An exploded left rear view of the main components of the prism drive mechanism;

[0032] Figure 5 This is a left front view of a moving frame component of a prism drive mechanism according to a first embodiment of the utility model;

[0033] Figure 6 This is a right front view of a moving frame component of a prism drive mechanism according to a first embodiment of the utility model;

[0034] Figure 7 This is a left rear view of the moving frame component of the prism drive mechanism of the first embodiment of the utility model;

[0035] Figure 8 This is a detailed view of the base and upper components of the base according to the first embodiment of the present utility model;

[0036] Fig. 9 This is a detailed diagram of a carrier and components on the carrier according to Embodiment 1 of the present utility model;

[0037] Fig.10 This is an assembly diagram of a hinge group according to the first embodiment of the utility model;

[0038] Fig.11 This is an assembly diagram of another hinge assembly of the first embodiment of the present utility model;

[0039] Fig.12 It is an assembly diagram of the main structure of the prism driving mechanism in the second embodiment;

[0040] Fig.13 It is an exploded rear view of the main structure of the prism driving mechanism in the second embodiment;

[0041] Fig.14 It is an exploded front view of the main structure of the prism driving mechanism in the second embodiment;

[0042] Fig.15 It is an exploded upper left front view of the main structure of the prism driving mechanism in the second embodiment;

[0043] Fig.16 It is an exploded upper right front view of the main structure of the prism driving mechanism in the second embodiment;

[0044] Fig.17 It is an exploded lower left front view of the main structure of the prism driving mechanism in the second embodiment;

[0045] Fig.18 It is an exploded lower right front view of the main structure of the prism driving mechanism in the second embodiment;

[0046] Fig.19 This is a schematic diagram of an electronic device in the fourth embodiment.

[0047] In the figure, the base 1, the coil circuit board 10, the first magnetic adsorption component 11, the moving frame 2, the first driving component 20, the first driving coil 200, the first driving magnet 201, the avoidance position 21, the boss 22, the carrier 3, the second driving component 30, the second driving coil 300, the second driving magnet 301, the magnet mounting part 302, the hinge group 4, the first protrusion 40, the second protrusion B40, the first groove 41, the second groove B41, the magnetic adsorption component 5, the metal part 50, the magnetic part 51, the rotating axis group 6, the shaft positioning groove 60, the output light axis X, the carrier rotation axis Y, the incident light axis Z, the plane xY, and the vertical surface yZ. DETAILED DESCRIPTION

[0048] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0049] Embodiment 1

[0050] like Figure 1-Figure 4 As shown, the prism driving mechanism of this embodiment includes a base 1, a first driving assembly 20, a second driving assembly 30 and a hinge group 4;

[0051] A first driving assembly 20 for driving the movable frame 2 to rotate relative to the base 1 around the output optical axis X; and

[0052] A second driving assembly 30 for driving the carrier 3 to rotate relative to the movable frame 2 around the carrier rotation axis Y;

[0053] The carrier 3 is placed in the moving frame 2, and the two opposite outer sides of the carrier 3 and the two opposite sides of the moving frame 2 are connected by a rotating shaft group 6, respectively. The rotating shaft group 6 forms the carrier rotation axis Y, and one of the rotating shaft groups 6 is a sphere, and the other rotating shaft group 6 is a shaft. The central axis of the shaft is parallel to the carrier rotation axis Y, and the central axis of the shaft passes through the center of the sphere. The rotational movement of the carrier 3 in the moving frame 2, through the connection between the sphere and the shaft, can enable the carrier 3 to rotate around the carrier rotation axis Y relative to the moving frame 2, realizing a specific nodding movement mode. The design of the connection between the sphere and the shaft can provide good support and rotational freedom, so that the carrier 3 can rotate stably on the carrier rotation axis Y without hindrance.

[0054] To ensure that the carrier 3 is built into the moving frame 2 and does not move in the axial direction of the carrier rotation axis Y, the spherical rotation axis group 6 is matched with the spherical recess, and any one of the spherical rotation axis group 6 and the spherical recess is fixed to the moving frame 2, and the remaining one is fixed to the carrier 3;

[0055] The rotating shaft group 6 of the shaft body cooperates with the shaft body positioning groove 60. The cooperation between the rotating shaft group 6 and the shaft body positioning groove 60 can reduce the friction force when the shaft body rotates. Any one of the rotating shaft group 6 of the shaft body and the shaft body positioning groove is fixed to the moving frame 2, and the remaining one is fixed to the carrier 3. In other embodiments, the shaft body and the sphere can be fixed on the carrier 3, and the corresponding spherical recess and the shaft body positioning groove 60 are set on the moving frame 2. In other embodiments, the shaft body and the sphere can also be set separately from the carrier 3 and the moving frame 2.

[0056] The movable frame 2 is provided with bosses 22 on opposite sides, one of the bosses 22 is provided with a spherical rotating shaft group 6, and the other boss 22 is provided with a shaft rotating shaft group 6. The shaft positioning groove 60 is a V-shaped groove, and the shaft rotating shaft group 6 contacts the two inclined surfaces of the V-shaped groove. The design of the spherical rotating shaft group 6 and the V-shaped groove can reduce the friction when the shaft rotates, and the stable support structure can reduce vibration and noise.

[0057] A magnetic attraction component with a magnetic attraction effect is arranged on the carrier 3 and the moving frame 2, a part of the magnetic attraction component is arranged in the carrier 3, and another part is arranged on the moving frame 2. In this embodiment, another part of the magnetic attraction component on the moving frame 2 is a sphere and a shaft, and the sphere and the shaft are made of magnetic materials, and a part of the magnetic attraction component on the carrier 3 is a metal part or a magnetic part embedded in the carrier 3. The magnetic attraction direction of the carrier 3 and the moving frame 2 is also along the incident light axis Z direction.

[0058] The hinge group 4 is used to make the base 1 and the movable frame 2 have at least two connection points and at least one connection point is used as a fixed-point rotation center. Specifically, the hinge group 4 includes at least two connection points distributed on the output optical axis X and both used as fixed-point rotations, that is, all the connection points are distributed along the axial direction of the output optical axis X.

[0059] At least part of the hinge assembly 4 is disposed on the base 1 , and the remaining part of the hinge assembly 4 is disposed on the moving frame 2 ;

[0060] The first driving assembly 20 is distributed on a plane xY perpendicular to the incident optical axis Z; the second driving assembly 30 is distributed on a vertical plane yZ perpendicular to the plane xY.

[0061] The base 1 and the moving frame 2 are connected by a hinge group 4, which can effectively maintain the stability of the prism driving mechanism and reduce the impact caused by vibration or external force. Through the distribution position of the first driving component 20 and the second driving component 30, the rotation direction and angle of the prism driving mechanism can be flexibly controlled to meet different usage requirements. The design of the hinge group 4 can reduce the friction and wear of the mechanism, extend the service life of the mechanism, and reduce maintenance and servicing costs, while ensuring that there is no posture difference after the moving frame 2 is installed.

[0062] The articulated group 4 and the first driving assembly 20 are distributed in the plane xY.

[0063] In this embodiment, by arranging the articulated group 4 and the first drive assembly 20 on the plane xY, the interaction between the components can be made more stable, the posture difference during the assembly process can be reduced, the difficulty of assembly can be reduced, and workers can be more easily positioned and adjusted during the assembly process, thereby improving assembly efficiency and saving time and cost. At the same time, the reasonable layout of the positions of the articulated group 4 and the first drive assembly 20 on the plane xY can optimize the mechanism structure and improve transmission efficiency and operation stability.

[0064] The hinge group 4 is any one of a spherical hinge group, a cylindrical hinge group, and a hinge group of a combination of a sphere and a cylinder.

[0065] These different types of hinge groups 4 can provide various different mechanism movement modes. A reasonably designed hinge group 4 can increase the stability of the structure and reduce vibration and noise. In the present embodiment, the hinge group 4 is a spherical hinge group. The spherical hinge group provides a full range of freedom of movement and can adapt to various working environments and requirements. The spherical hinge group can evenly transfer external loads to various parts of the structure, thereby reducing the pressure on the load-bearing components.

[0066] like Figure 10-11 As shown, the hinge group 4 includes a plurality of first protrusions 40 distributed in the axial direction of the output optical axis X, and a plurality of first grooves 41 corresponding to the first protrusions 40 one by one. The arcuate convex surface of the first protrusion 40 and the first groove 41 are in tangential contact with each other and form at least two fixed-point rotating connection points. Any one of the first protrusion 40 and the first groove 41 is arranged on the base 1, and the remaining one is arranged on the movable frame 2.

[0067] The first method: two spheres;

[0068] The second method: a sphere and a hemisphere;

[0069] The third method: a sphere and a cylinder distributed along the axial direction of the output light axis, the cross section of the cylinder is circular or semicircular, etc.;

[0070] The fourth method: a hemisphere and a cylinder distributed along the axial direction of the output light axis, the transverse cross section of the cylinder is circular or semicircular, etc.;

[0071] The fifth method: two cylinders are distributed along the axial direction of the output light axis, and the transverse cross-section of the cylinder is circular or semicircular, etc.;

[0072] The first protrusion and the base are connected as one body or as separate bodies.

[0073] For example, the groove wall of the first groove 41 has at least three inclined surfaces, and the arcuate convex surface is in tangential and movable contact with the three inclined surfaces.

[0074] The first protrusion 40 is in the shape of a sphere, a hemisphere or other shapes with an arc-shaped convex surface.

[0075] A magnetic adsorption component 5 is provided between the base 1 and the movable frame 2 to enable the hinge group 4 to be movably contacted and connected. At least part of the magnetic adsorption component 5 is provided on the base 1 , and the remaining part of the magnetic adsorption component 5 is provided on the movable frame 2 .

[0076] The magnetic adsorption component 5 provides a convenient connection method, so that the hinge group 4 can be easily disassembled and assembled. The magnetic adsorption component 5 can provide a stable connection to ensure that the hinge group 4 between the base 1 and the moving frame 2 can move safely and is not prone to loosening or falling off. Compared with the traditional friction connection method, the magnetic connection can reduce the friction of the contact surface.

[0077] The magnetic adsorption assembly 5 includes a metal member 50 having a first groove 41 and a magnetic member 51 magnetically attracted to the metal member 50 .

[0078] The first groove 41 on the metal part 50 can better fix the magnetic part 51, ensuring that the magnetic adsorption component 5 is stably connected during the movement and is not easy to fall off or shift. The magnetic part 51 and the metal part 50 are magnetically attracted to each other, which can provide a strong adsorption force, strong anti-interference ability, and not easily affected by external vibration or environmental influences. The moving frame 2 is molded by injection molding and the metal part 50 is embedded.

[0079] The first drive assembly 20 and the second drive assembly 30 are both electromagnetic drive assemblies;

[0080] The first driving assembly 20 includes a first driving coil 200 fixed on the base 1, and a first driving magnet 201 is provided on one side of the moving frame 2 close to the first driving coil 200 and spaced apart from the first driving coil 200;

[0081] The second driving assembly 30 includes a second driving coil 300 fixed on the base 1 , and a second driving magnet 301 spaced apart from the second driving coil 300 is provided on one side of the carrier 3 close to the second driving coil 300 .

[0082] In this embodiment, there are two groups of first driving coils 201 and they are symmetrically distributed around the emission optical axis X.

[0083] The electromagnetic drive assembly can provide efficient driving force, thereby achieving stable movement of the moving frame 2 and the carrier 3, and improving the performance and efficiency of the overall device. By controlling the current of the first drive coil 200 and the second drive coil 300, the magnetic field excitation of the first drive magnet 201 and the second drive magnet 301 can be achieved, and the position and movement trajectory of the moving frame 2 and the carrier 3 can be accurately controlled.

[0084] like Figure 5-Figure 7 As shown, an avoidance position 21 is provided on the moving frame 2 , and a magnet mounting portion 302 of a second driving magnet 301 is provided on the carrier 3 and extends into the avoidance position 21 .

[0085] The setting of the avoidance position 21 allows the magnet mounting part 302 of the second driving magnet 301 to be fully extended therein, thereby avoiding direct contact between the carrier 3 and the magnetic part 51 on the moving frame 2, reducing wear and friction. By setting the avoidance position 21, the stable installation of the second driving magnet mounting part 302 is ensured, and the magnet mounting part 302 is avoided from falling off or shifting due to external interference, thereby extending the service life of the magnetic part.

[0086] like Figure 8 As shown, a coil circuit board 10 is provided on the base 1, at least part of the coil circuit board 10 is distributed on the plane xY, and at least part of the remaining coil circuit board 10 is distributed on the vertical plane yZ, the first drive coil 200 is fixed on the part of the coil circuit board 10 distributed on the plane xY, and the second drive coil 300 is fixed on the part of the coil circuit board 10 distributed on the vertical plane yZ.

[0087] The different parts of the coil circuit board 10 are arranged on the plane and the elevation respectively, and the space of the base 1 is effectively utilized, so that the layout of the coil circuit board 10 is more reasonable and compact, which helps to reduce the overall size of the equipment, improve the integration of the equipment, facilitate wiring design and electrical connection, reduce line crossing and interference, and improve the stability and reliability of the system.

[0088] The sphere can prevent the axial movement of the shaft, and the combination of the shaft and the sphere can ensure the rotation accuracy and rotation smoothness, ensure the accuracy of the position and posture of the two, and avoid the influence on the focusing accuracy during relative movement. In this embodiment, the rotation axis group 6 is a mixed group of the sphere rotation axis and the shaft rotation axis. The advantage of this design is that the mixed sphere and shaft can ensure the smooth relative rotation between the carrier 3 and the moving frame 2, while preventing the relative movement between the two in the Y direction of the carrier rotation axis, thereby improving the operation accuracy of the system.

[0089] Embodiment 2

[0090] The working principle and structure of this embodiment are basically the same as those of the first embodiment, except that:

[0091] The hinge group 4 includes a connection point distributed on the incident optical axis Z as a fixed-point rotation center and at least two connection points that move in arcuate trajectories. The at least two connection points that move in arcuate trajectories move on concentric spherical surfaces with the fixed-point rotation connection point as the rotation center.

[0092] The hinge group 4 includes a plurality of second protrusions B40 distributed on the incident optical axis Z, and second grooves B41 corresponding one to the second protrusions B40. One second protrusion B40 among the plurality of second protrusions B40 is in tangential contact with a second groove B41 to form a connection point serving as a fixed-point rotation center, and the remaining second protrusions B40 are in tangential contact with the remaining second grooves B41 to form at least two connection points that move in an arc trajectory.

[0093] Specifically, one connection point serving as a fixed-point rotation center is a rotating ball group, and the remaining connection points moving in an arc trajectory are a revolving ball group. The moving frame 2 is used to drive the prism to perform a micro-rotation on a plane yZ perpendicular to the emergent optical axis X, so as to achieve the effect of the prism shaking its head. In this embodiment, the second protrusion B40 is arranged between the moving frame 2 and the base 1, and in a space perpendicular to the emergent optical axis X.

[0094] In this embodiment, the second protrusion B40 is arranged on the same plane yZ. When the movable frame 2 rotates, the second protrusion B40 is a fixed ball and its position does not change. The second protrusion B40 is a moving ball and the center of its moving arc is located at the position of the second protrusion B40.

[0095] Part of the second protrusion B40 moves or rolls in an arc trajectory relative to the base 1 and / or the movable frame 2 on a plane yZ perpendicular to the emergent optical axis X.

[0096] The second protrusion B40 is any one of a complete spherical structure and an incomplete spherical structure. The incomplete spherical structure is, for example, a hemisphere. In this case, the hemisphere is fixed to the base 1 or the moving frame 2, and the hemispherical surface of the hemisphere moves in an arc trajectory relative to the base 1 or the moving frame 2.

[0097] When the complete spherical structure is selected, the revolving sphere can roll in an arc trajectory relative to the base 1 and the moving frame 2 at the same time.

[0098] The second protrusion B40 can achieve smoother and more stable revolution motion, reduce friction and wear, increase the service life of components, and also improve the accuracy and efficiency of the equipment. Through the second protrusion B40, more accurate positioning and motion control can be achieved.

[0099] The base 1 and / or the movable frame 2 is provided with a second groove B41 for at least part of the second protrusion B40 to extend into, and the second protrusion B40 moves or rolls along an arc trajectory relative to the second groove B41.

[0100] The second groove B41 can effectively limit the range of motion of the second protrusion B40, preventing it from deviating from the track or leaving the base 1 and / or the moving frame 2. This design can reduce friction and wear, extend the service life of the second protrusion B40 and the second groove B41, and also improve the stability and precision of the device. Through the design of the second groove B41, a smoother and more efficient revolution motion can be achieved, which is suitable for various mechanical systems and equipment that require precise control and stable support.

[0101] The second protrusion B40 of the rotating ball group rotates relative to the base 1 and / or the moving frame 2.

[0102] The second protrusion B40 of the rotating ball group has a fixed sphere, the purpose of which is to provide a rotating fixed axis for the device.

[0103] The second protrusion B40 also has two situations: a complete spherical structure and an incomplete spherical structure. When the second protrusion B40 adopts a complete spherical structure, the second protrusion B40 can rotate relative to the base 1 and / or the movable frame 2.

[0104] When the second protrusion B40 is a non-complete spherical structure, for example, a hemisphere, the hemisphere is fixed to the base 1, and the arcuate spherical surface of the hemisphere is in tangential rotational contact with the moving frame 2. Of course, the setting position of the hemisphere can also be changed.

[0105] A second groove B41 for at least partially accommodating the second protrusion B40 of the revolving ball group is provided on the base 1, and a second groove B41 for at least partially accommodating the second protrusion B40 of the revolving ball group is provided on the moving frame 2.

[0106] In this embodiment, the second groove B41 is a semicircular groove, and its surface is completely fitted with the second protrusion B40. The second protrusion B40 is partially fixed in the second groove B41. The second groove B41 is a triangular arc groove. The second protrusion B40 is partially arranged in the second groove B41. A slight movement is allowed between the second protrusion B40 and the second groove B41.

[0107] The prism driving mechanism also includes a first magnetic adsorption component 11 distributed axially along the output optical axis X, at least a portion of the first magnetic adsorption component 11 is arranged on the base 1, and the remaining portion of the first magnetic adsorption component 11 is arranged on the moving frame 2, at least the portion arranged on the base 1 and the remaining portion arranged on the moving frame 2 are distributed at intervals in the axial direction of the output optical axis X and are magnetically attracted to each other.

[0108] The function of the first magnetic adsorption component 11 is to make the base 1 and the moving frame 2 attract each other, so as to realize a magnetic adsorption connection method, so that the two can be firmly adsorbed to each other, while ensuring that the second protrusion B40 and the second protrusion B40 can always be fixed between the base 1 and the moving frame 2.

[0109] The first driving assembly 20 is distributed in a plane xY perpendicular to the incident optical axis Z; the second driving assembly 30 is distributed in the plane xY.

[0110] Embodiment 3

[0111] The structure and principle of this embodiment are basically the same as those of the first or second embodiment, and the difference lies in that, with respect to the prism driving mechanism of the first or second embodiment, the lens driving device of this embodiment includes a prism driving mechanism.

[0112] A lens drive is a device used to adjust the position or focal length of a lens, usually by mechanical, electrical or other means. The main function of a lens drive is to adjust the position of the lens to achieve control of the focal length, focus or focusing of the optical system.

[0113] Embodiment 4

[0114] The structure and principle of this embodiment are basically the same as those of the third embodiment, and the different structure is that, with respect to the lens driving device of the third embodiment, the camera module of this embodiment includes a lens driving device.

[0115] like Fig.12 As shown in the figure, the camera module includes a lens driving device. The camera module refers to a modular component that integrates a camera, a lens, a sensor and other related components. The camera module usually includes components such as an image sensor, an image processor, a lens, an optical filter, a focal length adjuster, an autofocus module, etc., and can be directly used in various devices and applications, such as smartphones, tablets, surveillance cameras, car cameras, etc.

[0116] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A prism drive mechanism, comprising a base (1); characterized in that: The prism driving mechanism further comprises: A first driving component (20) for driving the movable frame (2) to rotate relative to the base (1); and a second driving component (30) for driving the carrier (3) to rotate relative to the movable frame (2) around a carrier rotation axis (Y) perpendicular to the rotation axis of the movable frame (2); The carrier (3) is placed in the movable frame (2), and the opposite sides of the carrier (3) and the opposite sides of the movable frame (2) are respectively connected by a rotating shaft group (6), and the rotating shaft group (6) forms the carrier rotating axis (Y), and one of the rotating shaft groups (6) is a sphere, and the other rotating shaft group (6) is a shaft.

2. The prism drive mechanism according to claim 1, characterized in that: The prism driving mechanism further comprises an articulation group (4), wherein the articulation group (4) is used to enable the base (1) and the moving frame (2) to have at least two connection points, and at least one of the connection points is used as a fixed-point rotation center; The connection points are distributed on the emergent optical axis (X) or the incident optical axis (Z); the hinge group (4) comprises at least two connection points which are distributed on the emergent optical axis (X) and both serve as fixed-point rotations.

3. The prism drive mechanism according to claim 2, characterized in that: The hinge group (4) comprises a plurality of first protrusions (40) distributed on the output optical axis (X), and a plurality of first grooves (41) corresponding to the first protrusions (40) one by one, the arcuate convex surface of the first protrusion (40) and the first groove (41) being in tangential movable contact and forming at least two connection points for fixed-point rotation, any one of the first protrusion (40) and the first groove (41) being arranged on the base (1), and the remaining one being arranged on the movable frame (2).

4. The prism drive mechanism according to claim 2, characterized in that: The hinge group (4) comprises a connection point distributed on the incident light axis (Z) as a fixed-point rotation center and at least two connection points that move in arcuate trajectories, and at least two connection points that move in arcuate trajectories move on concentric spherical surfaces with the connection point that rotates at the fixed point as a rotation center.

5. The prism driving mechanism according to claim 4, characterized in that: The hinge group (4) comprises a plurality of second protrusions (B40) distributed on the incident optical axis (Z), and second grooves (B41) corresponding one to each of the second protrusions (B40); one of the plurality of second protrusions (B40) and one of the second grooves (B41) are in tangential contact with each other and form a connection point serving as a fixed-point rotation center; the remaining second protrusions (B40) and the remaining second grooves (B41) are in tangential contact with each other and form at least two connection points that move in an arc trajectory.

6. The prism drive mechanism according to claim 1 or 2, characterized in that: The first drive component (20) and the second drive component (30) are both electromagnetic drive components; the first drive component (20) is distributed in a plane (xY) perpendicular to the incident light axis (Z); and the second drive component (30) is distributed in the plane (xY) or in a vertical plane (yZ) perpendicular to the plane (xY).

7. The prism drive mechanism according to claim 1, characterized in that: The rotating shaft group (6) of the sphere matches the spherical recess, any one of the rotating shaft group (6) of the sphere and the spherical recess is fixed to the moving frame (2), and the remaining one is fixed to the carrier (3); The rotating shaft group (6) of the shaft body cooperates with the shaft body positioning groove (60), and any one of the rotating shaft group (6) of the shaft body and the shaft body positioning groove is fixed to the moving frame (2), and the remaining one is fixed to the carrier (3).

8. The prism drive mechanism according to claim 7, characterized in that: The movable frame (2) is provided with bosses (22) on opposite sides, one of the bosses (22) is provided with the rotating shaft group (6) in the form of a sphere, and the other boss (22) is provided with the rotating shaft group (6) in the form of a shaft; The shaft body positioning groove (60) is a V-shaped groove, and the rotating shaft group (6) of the shaft body is in contact with two inclined surfaces of the V-shaped groove.

9. A lens driving device, characterized in that: The lens driving device comprises the prism driving mechanism according to any one of claims 1-8.

10. A camera module, characterized in that: The camera module includes the lens driving device described in claim 9.

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