Lens driving mechanism

Abstract

The invention discloses a lens driving mechanism which comprises a base, a cross shaft, a prism carrier and a lens carrier, the cross shaft comprises a first shaft and a second shaft which are connected with each other, the first shaft extends in the first direction and is connected with the base, and the second shaft extends in the vertical direction. The prism carrier is supported on the first shaft and the second shaft and can rotate around the axis of the first shaft and the axis of the second shaft, and the prism carrier is used for installing a prism. The lens carrier is connected with the base, the lens carrier and the prism carrier are arranged in the second direction, and the lens carrier is located in front of the prism carrier and used for installing a lens. The second direction is the optical axis direction of the lens, and the second direction, the first direction and the vertical direction are perpendicular to each other.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical element driving, in particular to a lens driving mechanism. BACKGROUND

[0002] With the development of technology, many electronic devices (such as smart phones or digital cameras) nowadays have the function of taking pictures or recording videos. These electronic devices are becoming more and more popular and are developing towards the direction of convenience and thinness, providing users with more choices.

[0003] Among them, the lens driving device is used in light design because it can greatly reduce the thickness and weight of the whole device. The lens driving device structure usually includes two parts, the lens part and the prism part, wherein the prism part is arranged at the front end, and the imaging chip is arranged at the rear end of the lens part. The light is converted to the lens part through the prism part reflection, and the light is zoomed through the lens part to the imaging chip.

[0004] Specifically, the prism part can usually nod and shake on the base to change the angle of the light, and these actions need the prism magnet and the prism coil to realize. The existing prism part installs the rotating shaft, the magnet or the coil, so that the height of the whole prism part is increased, which is not conducive to the lightweight design, so it needs to be improved. SUMMARY

[0005] The purpose of the present application is to provide a lens driving mechanism to solve the problems of the prior art.

[0006] To solve the above technical problems, the embodiment of the present application provides a lens driving mechanism, comprising:

[0007] a base;

[0008] a cross shaft, the cross shaft comprising a first shaft and a second shaft connected to each other, the first shaft extending along a first direction and being connected to the base, the second shaft extending along a vertical direction;

[0009] a prism carrier supported on the first shaft and the second shaft and rotatable around the axis of the first shaft and the axis of the second shaft, the prism carrier being used for mounting a prism;

[0010] a lens carrier connected to the base and arranged along a second direction with the prism carrier, the lens carrier being located in front of the prism carrier and being used for mounting a lens;

[0011] The second direction is the optical axis direction of the lens, and the second direction, the first direction and the vertical direction are perpendicular to each other.

[0012] In one embodiment, the base comprises:

[0013] a bottom plate;

[0014] two support tables, the two support tables arranged along the first direction, bottom ends of the two support tables connected to the bottom plate, top ends used for supporting two ends of the first shaft.

[0015] In one embodiment, the prism carrier is provided with a first groove and a second groove on a rear side thereof along the second direction, the first groove extending along the first direction, the second groove extending along a vertical direction;

[0016] the first shaft located in the first groove;

[0017] the second shaft located in the second groove.

[0018] In one embodiment, the prism carrier is provided with two avoiding grooves on a bottom surface thereof, the two avoiding grooves in communication with two ends of the first groove;

[0019] the base comprises:

[0020] a bottom plate;

[0021] two support tables, the two support tables arranged along the first direction, the two support tables respectively located in the two avoiding grooves and connected to the bottom plate at bottom ends, top ends used for supporting two ends of the first shaft.

[0022] In one embodiment, the first groove is located in a middle part of the prism carrier along a vertical direction.

[0023] In one embodiment, the lens driving mechanism further comprises a first coil set and a first magnet set, one of the first coil set and the first magnet set mounted on a bottom surface of the prism carrier, the other connected to the bottom plate, the first magnet set cooperating with the first coil set to drive the prism carrier to rotate around an axis of the first shaft.

[0024] In one embodiment, the prism carrier is provided with a first magnet groove on a bottom surface thereof, the bottom plate is provided with a first coil groove on a top surface thereof;

[0025] the lens driving mechanism further comprises a first coil set and a first magnet set, the first coil set located in the first coil groove, the first magnet set located in the first magnet groove, the first magnet set cooperating with the first coil set to drive the prism carrier to rotate around an axis of the first shaft.

[0026] In one embodiment, an inner wall of the first groove or the second groove is provided with a mounting groove, a first suction member mounted in the mounting groove;

[0027] At least a portion of the cross shaft is a second adsorption element that is attracted to the first adsorption element, and the second adsorption element is arranged opposite to the first adsorption element.

[0028] In one embodiment, the base further includes a side plate, which is connected to the bottom plate;

[0029] The lens driving mechanism further includes a second coil group and a second magnet group, one of which is installed on both sides of the prism carrier along the first direction, and the other is connected to the side plate.

[0030] The second magnet group, in conjunction with the second coil group, can drive the prism carrier to rotate around the axis of the second axis.

[0031] In one embodiment, the base includes two side plates, which are arranged along the first direction and connected to the bottom plate, and each of the two side plates is provided with a second coil groove;

[0032] The prism carrier is provided with second magnet grooves on both sides along the first direction.

[0033] The lens driving mechanism further includes two second coil groups and two second magnet groups. The two second coil groups are respectively located in two second coil slots, and the two second magnet groups are respectively located in two second magnet slots. The second magnet groups cooperate with the second coil groups to drive the prism carrier to rotate around the axis of the second axis.

[0034] In one embodiment, the base plate is provided with a clearance groove, which extends along the first direction;

[0035] The bottom of the prism carrier includes a first part and a second part, wherein the bottom surface of the first part is higher than the bottom surface of the second part and is located above the base plate.

[0036] The second part is located in front of the first part and within the clearance groove.

[0037] In one embodiment, the lens driving mechanism further includes a sensor and a sensing magnet, one of which is mounted on the prism carrier and the other on the base. The sensor and the sensing magnet cooperate to sense the position of the prism carrier.

[0038] In one embodiment, the lens driving mechanism further includes a sensor and a sensing magnet;

[0039] The bottom surface of the prism carrier is provided with a magnetic groove for installing the magnetic induction magnet.

[0040] The base plate is provided with a sensor mounting slot, which is used to install a sensor. The sensor, in conjunction with the sensing magnet, can sense the position of the prism carrier.

[0041] In one embodiment, the first shaft has at least two ends that are first magnetic elements, and the two support platforms are respectively equipped with second magnetic elements that correspond to the first magnetic elements; or

[0042] The support platform is at least topped by a second magnetic element that is connected to the first magnetic element, or

[0043] The base also includes two side plates, which are arranged along the first direction and connected to the base plate. The two side plates are provided with a second magnetic element that is connected to the first magnetic element.

[0044] In one embodiment, the first shaft is a first magnetic element;

[0045] The base also includes two side plates, which are arranged along the first direction and connected to the bottom plate; each of the two side plates is provided with a positioning protrusion, which is aligned with both ends of the first shaft and has a second magnetic component installed inside it;

[0046] The lens driving mechanism also includes a circuit board, which is connected to the base and has two positioning holes, which are respectively installed on the outside of the two positioning protrusions.

[0047] The first coil group and the second coil group are electrically connected to the circuit board.

[0048] In one embodiment, the lens driving mechanism further includes a third coil group and a third magnet group, one of which is connected to the lens carrier and the other is connected to the base;

[0049] The third magnet group, in conjunction with the third coil group, can drive the lens carrier to move along the second direction.

[0050] In one embodiment, the lens driving mechanism further includes a third coil group and a third magnet group, wherein the third coil group is connected to the base;

[0051] The third magnet group is connected to the lens carrier, and the third magnet group, in conjunction with the third coil group, can drive the lens carrier to move along the second direction;

[0052] The base contains multiple metal plates, which are attracted to the first magnet group, the second magnet group, and the third magnet group, respectively.

[0053] In one embodiment, the lens carrier is rotatably connected to the base.

[0054] In one embodiment, the lens driving mechanism further includes an elastic element connected to the base and the prism carrier for driving the prism carrier to reset. Attached Figure Description

[0055] Figure 1 and Figure 2 This is an exploded view of a lens driving mechanism according to an embodiment of the present invention.

[0056] Figure 3 yes Figure 1 A perspective view of the prism carrier and lens carrier in the illustrated embodiment.

[0057] Figure 4 yes Figure 1 A perspective view of the prism carrier in the illustrated embodiment.

[0058] Figure 5 yes Figure 1 Exploded view of the prism carrier, cross shaft, first magnet group, second magnet group and induction magnet in the embodiment shown.

[0059] Figure 6 and Figure 7 yes Figure 1 The assembly diagram of the prism carrier, cross shaft, first magnet group, second magnet group and induction magnet in the embodiment shown.

[0060] Figure 8 yes Figure 1 Exploded view of the prism carrier, cross shaft, and induction magnet in the illustrated embodiment.

[0061] Figure 9 and Figure 10 yes Figure 1 The illustrated embodiment shows an assembly diagram of the base, the first coil group, the second coil group, and the circuit board.

[0062] Figure 11 and Figure 12 yes Figure 1 The exploded view of the base, first coil group, second coil group, and circuit board in the illustrated embodiment.

[0063] Figure 13 yes Figure 1 Assembly diagram of the lens drive mechanism in the illustrated embodiment.

[0064] Figure 14 yes Figure 13 A cross-sectional view of the lens drive mechanism along line AA in the embodiment shown.

[0065] Reference numerals: 100, Lens driving mechanism; 1, Base; 11, Base plate; 111, First coil slot; 112, First coil group; 113, Clearance slot; 114, Sensor; 12, Side plate; 121, Positioning protrusion; 122, Second coil slot; 123, Second coil group; 124, Third coil slot; 125, Third coil group; 13, End plate; 14, Support platform; 141, V-groove; 2, Prism carrier; 201, First part; 202, Second part; 203, Metal block; 21, Prism 1. Lens mounting slot; 211. Inclined surface; 22. First groove; 23. Second groove; 24. Clearance groove; 25. First magnet groove; 26. Second magnet groove; 27. First magnet group; 28. Second magnet group; 29. ​​Induction magnet; 3. Lens carrier; 31. Third magnet groove; 32. Lens; 4. Cross axis; 41. First axis; 42. Second axis; 5. Circuit board; 51. Positioning hole; 6. Spring; 7. Housing; 71. Light inlet; 8. Prism; X, First direction; Y, Second direction; Z, Vertical direction; Detailed Implementation

[0066] To make the objectives, technical solutions, and advantages of this invention clearer, the various embodiments of this invention will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this invention to facilitate a better understanding of this application. However, the technical solutions claimed in the claims of this application can be implemented even without these technical details and with various variations and modifications based on the following embodiments.

[0067] Unless the context requires otherwise, throughout the specification and claims, the word “comprising” and its variations, such as “including” and “having”, shall be understood to have an open, inclusive meaning, that is, to be interpreted as “including, but not limited to”.

[0068] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings to provide a clearer understanding of the purpose, features, and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are merely illustrative of the essential spirit of the technical solution of the present invention.

[0069] Throughout this specification, references to "an embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Therefore, the appearance of "in an embodiment" or "an embodiment" in various places throughout the specification does not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic may be combined in any manner in one or more embodiments.

[0070] The singular forms “a” and “the” used in this specification and the appended claims include plural references unless otherwise expressly stated herein. It should be noted that the term “or” is generally used to mean “and / or” unless otherwise expressly stated herein.

[0071] In the following description, in order to clearly demonstrate the structure and working method of the present invention, a number of directional terms will be used. However, terms such as "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", and "down" should be understood as convenient terms and not as limiting terms.

[0072] The present invention relates to a lens 32 driving mechanism 100, which includes a base 1, a circuit board 5, an elastic element, a cross shaft 4, a prism carrier 2, a lens carrier 3, and a housing.

[0073] The base 1 includes a base plate 11, two side plates 12, and two end plates 13. The two side plates 12 are spaced apart along a first direction X and connected to both sides of the base plate 11 along the first direction X. The two end plates 13 are spaced apart along a second direction Y and connected to both ends of the base plate 11 along the second direction Y. The two end plates 13, the two side plates 12, and the base plate 11 form a frame structure.

[0074] The outer casing covers the outside of the base 1 and is connected to the base 1. The outer casing is also provided with a light inlet hole 71.

[0075] Prism carrier 2 and lens carrier 3 are arranged side-by-side within the frame of base 1 along the second direction Y, with prism carrier 2 located behind lens carrier 3. Prism carrier 2 is used to mount prism 8, and lens carrier 3 is used to mount lens 32. The front sides of lens 32 and prism 8 are aligned along the second direction Y, and the optical axis of lens 32 is also the second direction Y. The second direction Y, the first direction X, and the vertical direction Z are all perpendicular to each other.

[0076] The light inlet 71 of the housing is aligned with the top surface of the prism 8. External light enters the top surface of the prism 8 through the light inlet 71 of the housing, and after being refracted by the prism 8, it enters the lens 32 from the front side of the prism 8.

[0077] The prism carrier 2 is a rectangular block structure with a recessed prism mounting groove 21 on its front side. The prism mounting groove 21 is open upwards, and the bottom wall of the prism mounting groove 21 is an inclined surface 211. The inclined surface 211 extends from the rear top end of the prism carrier 2 to the front bottom end, so that the size of the prism carrier 2 along the second direction Y gradually decreases from the bottom to the top. That is to say, the cross-section of the prism carrier 2 along the vertical direction Z is a right triangle.

[0078] To increase the stability of the prism 8, the prism carrier 2 also has baffles on both sides along the first direction X. These two baffles and the prism carrier 2 together define the inner wall of the prism mounting groove 21.

[0079] The rear side of the prism carrier 2 is provided with a first groove 22 and a second groove 23. The first groove 22 extends along the first direction X and penetrates the prism carrier 2 along the first direction X. The second groove 23 extends along the vertical direction Z and passes through the first groove 22.

[0080] The cross shaft 4 includes a first shaft 41 and a second shaft 42 that are connected to each other or integrally formed. The first shaft 41 extends along a first direction X, and the second shaft 42 extends along a vertical direction Z. The first shaft 41 is located in a first groove 22, and the second shaft 42 is located in a second groove 23.

[0081] The two ends of the first shaft 41 can extend beyond the two ends of the first groove 22 and be hung on the base 1. The prism carrier 2 can rotate around the axis of the first shaft 41 to form a nodding motion.

[0082] The top of the second axis 42 supports the prism carrier 2, which can rotate around the axis of the second axis 42 to form a head-shaking motion.

[0083] The second axis 42 extends vertically in the Z direction. The second axis 42 is a vertical rod and does not occupy the lateral area of ​​the prism carrier 2. A prism mounting groove 21 for mounting the prism 8 needs to be provided on the front side of the prism carrier 2. This prism mounting groove 21 occupies approximately half the volume of the prism carrier 2, equivalent to cutting off half of the rectangular block of the prism carrier 2 diagonally. The remaining part of the prism carrier has a small top dimension along the second direction Y. In the prior art, the second axis 42 extends along the second direction Y. Since the second axis 42 has a certain length, to avoid the second axis 42 protruding from the rear side of the prism carrier 2, it needs to be positioned near the bottom of the prism carrier 2. However, the bottom surface of the prism carrier 2 also needs to install a magnet assembly. To install the magnet assembly, the height of the prism carrier 2 needs to be increased, which also increases the overall height of the lens drive mechanism. This increase in height will affect the thickness of the mobile phone or other electronic devices.

[0084] The second shaft 42 of this invention extends vertically in the Z direction. The second shaft 42 can be installed near the rear side of the prism carrier 2, and does not need to be located at the bottom of the prism carrier 2. The diameter of the second shaft 42 is relatively small, so it does not protrude from the rear side of the prism carrier 2. The bottom surface of the prism carrier 2 can have grooves for the magnet assembly or coil assembly, which can reduce the height of the prism carrier 2 in the vertical Z direction. This reduces the overall height of the lens drive mechanism, making electronic devices using this lens drive mechanism, such as mobile phones, lighter.

[0085] The first groove 22 is located in the middle of the prism carrier 2 along the vertical direction Z. The center of the second groove 23 along the vertical direction Z overlaps with the center of the first groove 22 along the first direction X. The center of the first shaft 41 along the first direction X overlaps with the center of the second shaft 42 along the vertical direction Z. The first groove 22 is located in the middle of the prism carrier 2 along the vertical direction Z. The top end of the second shaft 42 will not protrude from the top of the prism carrier 2, and the bottom end will not be close to the bottom of the prism carrier 2, so as not to affect the installation of the magnet.

[0086] It should be understood that the dimensions of the first groove 22 and the second groove 23 are sufficient for the prism carrier 2 to rotate about the axis of the first axis 41 and the axis of the second axis 42. That is, the dimensions of the first groove 22 allow the prism carrier 2 to rotate about the axis of the second axis 42, and the dimensions of the second groove 23 allow the prism carrier 2 to rotate along the axis of the first axis 41.

[0087] As a preferred option, such as Figure 5 As shown, the first shaft 41 of the cross shaft 4 is equipped with a magnet, and the first groove 22 is provided with a mounting groove. A metal block 203 that is attracted to the magnet is installed in the mounting groove to increase the stability of the cross shaft 4.

[0088] The mounting groove is preferably located at the intersection of the first groove and the second groove, that is, at the point where the centers of the first shaft and the second shaft overlap, in order to increase the stability of the cross shaft.

[0089] Of course, in other embodiments, a portion of the first shaft 41 may be configured as a magnet, which is mounted opposite to the metal block 203 and attracts each other.

[0090] In another embodiment, part or all of the first shaft 41 is made of a metal material that attracts the magnet, and the magnet is installed in the mounting groove.

[0091] Of course, a magnet or metal block 203 can also be installed on the inner wall of the second groove 23, and the second shaft 42 can be made of a material that attracts the magnet or metal block 203.

[0092] In other words, the first groove 22 or the second groove 23 is provided as a mounting groove for installing the first adsorption component, and part or all of the cross shaft 4 is made of the second adsorption component. The first adsorption component and the second adsorption component attract each other. For example, the first adsorption component is metal, and the second adsorption component is a magnet that attracts the first adsorption component, or both the first adsorption component and the second adsorption component are magnets that attract each other.

[0093] exist Figure 3 In the embodiment shown, the bottom surface of the prism carrier 2 is provided with a relief groove 24. The two relief grooves 24 are located on both sides of the prism carrier 2 along the first direction X and are connected to the two ends of the first groove 22.

[0094] Two support platforms 14 are arranged at intervals along the first direction X. The two support platforms 14 are adjacent to two side plates 12. The bottom ends are respectively installed on the top surface of the base plate 11. The top surface is provided with V-shaped grooves 141, which are used to support the two ends of the first shaft 41.

[0095] To increase the stability of the cross shaft 4, the two ends of the first shaft 41 or the entire first shaft 41 can be made of magnetic material, and the inner wall of the support platform 14 or the V-groove 141 of the support platform 14 can be made of a metal material or a magnetic material that attracts the first shaft 41. The first shaft 41 can be made of a first magnetic element, and the support platform 14 can be made of a second magnetic element that attracts the first magnetic element. The first magnetic element can be a magnet or a metal sheet, and the second magnetic element can also be a magnet or a metal sheet. In other words, the support platform 14 only needs to attract the first shaft 41.

[0096] exist Figure 9 and Figure 10 In the illustrated embodiment, the two ends of the first shaft 41 or the first shaft 41 adopts a first magnetic element. The two support platforms 14 are respectively adjacent to the inner walls of the two side plates 12. The outer surfaces of the two side plates 12 are provided with positioning protrusions 121. The two positioning protrusions 121 are respectively aligned with the two support platforms 14 and the two ends of the first shaft 41. The two positioning protrusions 121 are embedded with second magnetic elements 1211 that are attracted to the first magnetic element.

[0097] like Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the bottom surface of the prism carrier 2 is provided with a first magnet groove 25 for installing the first magnet group 27, and the bottom plate 11 is provided with a first coil groove 111 for installing the first coil group 112. The first magnet group 27 and the first coil group 112 are aligned in the vertical direction Z and cooperate with each other to drive the prism carrier 2 to rotate around the axis of the first shaft 41.

[0098] It should be understood that the first coil group 112 can also be set at the bottom of the prism carrier 2, and the first magnet group 27 can be set on the base plate 11.

[0099] In addition, such as Figure 6 As shown, the bottom surface of the prism carrier 2 is provided with a magnetic groove for mounting the inductive magnet 29, and the base plate 11 is provided with a sensor mounting groove for mounting the sensor 114. The sensor 114 cooperates with the inductive magnet 29 to sense the position of the prism carrier 2. Of course, the inductive magnet 29 can also be placed on the base plate 11, and the sensor 114 can be placed on the prism carrier 2. The sensor 114 is a Hall sensor, which can sense the magnetic field of the inductive magnet 29.

[0100] like Figure 5 , Figure 6 , Figure 7 andFigure 8 As shown, the prism carrier 2 is provided with second magnet slots 26 for mounting second magnet groups 28 on both sides along the first direction X, and the two side plates 12 are respectively provided with second coil slots 122 for mounting second coil groups 123. The two second coil groups 123 and the two second magnet groups 28 are aligned along the first direction X. The second magnet groups 28 and the second coil groups 123 cooperate to drive the prism carrier 2 to rotate around the axis of the second axis 42. Of course, the second magnet groups 28 can also be set on the side plates 12, and the second coil groups 123 can be set on both sides of the prism carrier 2 along the second direction Y.

[0101] like Figure 11 As shown, the base plate 11 is provided with a clearance groove 113, which extends along the first direction X. The bottom of the prism carrier 2 includes a first portion 201 and a second portion 202 along the second direction Y, as shown. Figure 6 As shown, the bottom of the first part 201 is recessed, so the bottom surface of the first part is higher than the bottom surface of the second part 202, and the first part is located above the base plate 11. The second part is located in front of the first part 201, and the bottom surface of the second part is lower than the bottom surface of the first part, and the second part 202 is located within the clearance groove 113. When the prism carrier 2 nods around the axis of the first axis 41, the clearance groove 113 can provide movement space for the prism carrier 2, and can also reduce the height of the entire lens 32 drive mechanism 100.

[0102] The lens carrier 3 is rotatably connected to the base plate 11 via several balls, rollers or other rolling elements.

[0103] The lens carrier 3 has third magnet slots 31 for mounting third magnet groups on both sides along the first direction X, and third coil slots 124 for mounting third coil groups 125 on both side plates 12. The third magnet groups and the third coil groups 125 cooperate to drive the lens carrier 3 to move along the second direction Y. The second direction Y is the optical axis direction of the lens 32. The lens carrier 3 drives the lens 32 to move along the optical axis direction, which can achieve the function of focusing.

[0104] Of course, the third magnet group can also be set on the side plate 12 or the bottom plate 11, and the third coil group 125 can be set on the prism carrier 2.

[0105] The base 1 is also provided with multiple metal pieces, which are embedded in the base plate 11 or side plate 12 of the base 1 and are located on the sides of the first magnet group 27, the second magnet group 28 and the third magnet group respectively. They can attract the first magnet group 27, the second magnet group 28 and the third magnet group, increasing the stability of the magnet groups.

[0106] A portion of the circuit board 5 is located on the outer side of the two side plates 12, and another portion is located on the bottom surface of the base plate 11. The circuit board 5 is provided with two positioning holes 51, which are respectively installed on the outside of the two positioning protrusions 121.

[0107] The first coil group 112, the second coil group 123, the third coil group 125, and the sensor 114 are electrically connected to the circuit board 5.

[0108] Of course, in other embodiments, the circuit structure can be directly set inside the base 1 to power the first coil group 112, the second coil group 123, the third coil group 125 and the sensor 114, without the need to install the circuit board 5.

[0109] The elastic element is a spring 6, which is located on the top surface of the base plate 11. Its two ends along the first direction X are locked outside the two support platforms 14. The spring 6 includes multiple elastic spring wires. A part of the spring 6 is connected to the prism carrier 2 and a part is connected to the base plate 11. After the prism carrier 2 moves, the spring 6 can drive the prism carrier 2 to reset.

[0110] The two support platforms are adjacent to the two side plates. The two ends of the first shaft are directly installed on the top surface of the two support platforms without the need for other positioning components, making installation convenient.

[0111] The preferred embodiments of the present invention have been described in detail above, but it should be understood that, if necessary, aspects of the embodiments can be modified to utilize aspects, features, and concepts from various patents, applications, and publications to provide other embodiments.

[0112] In light of the detailed description above, these and other changes can be made to the embodiments. Generally, the terminology used in the claims should not be considered limited to the specific embodiments disclosed in the specification and claims, but should be understood to include all possible embodiments together with the full scope of equivalents enjoyed by these claims.

[0113] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes in form and detail may be made without departing from the spirit and scope of the present invention.

Claims

1. A lens driving mechanism characterized by comprising: The utility model relates to a lens drive mechanism, comprising: a base; a cross shaft, the cross shaft comprises a first shaft and a second shaft connected with each other, the first shaft extends along a first direction and is connected with the base, the second shaft extends along a vertical direction; a prism carrier supported on the first shaft and the second shaft and rotatable around the axis of the first shaft and the axis of the second shaft, the prism carrier is used for mounting a prism; a lens carrier connected with the base and arranged along a second direction with the prism carrier, the lens carrier is located in front of the prism carrier and is used for mounting a lens; the second direction is the optical axis direction of the lens, the second direction, the first direction and the vertical direction are perpendicular to each other.

2. The lens driving mechanism according to claim 1, wherein The base comprises: a bottom plate; two support tables, the two support tables are arranged along the first direction, the bottom ends of the two support tables are connected with the bottom plate, and the top ends are used for supporting the two ends of the first shaft.

3. The lens driving mechanism according to claim 1, wherein The prism carrier is provided with a first groove and a second groove communicating with each other on the back side along the second direction, the first groove extends along the first direction, and the second groove extends along the vertical direction; The first shaft is located in the first groove; The second shaft is located in the second groove.

4. The lens driving mechanism according to claim 3, wherein The bottom surface of the prism carrier is provided with two avoiding grooves communicating with the two ends of the first groove; The base comprises: a bottom plate; two support tables, the two support tables are arranged along the first direction, the bottom ends of the two support tables are connected with the bottom plate, and the top ends are used for supporting the two ends of the first shaft.

5. The lens driving mechanism according to claim 3, wherein The first groove is located in the middle of the prism carrier along the vertical direction.

6. The lens driving mechanism according to claim 4, wherein The lens drive mechanism further comprises a first coil group and a first magnet group, one of the first coil group and the first magnet group is mounted on the bottom surface of the prism carrier, and the other is connected with the bottom plate, and the first magnet group cooperates with the first coil group to drive the prism carrier to rotate around the axis of the first shaft.

7. The lens driving mechanism according to claim 2, wherein The bottom surface of the prism carrier is provided with a first magnet groove, and the top surface of the bottom plate is provided with a first coil groove; The lens drive mechanism further comprises a first coil group and a first magnet group, the first coil group is located in the first coil groove, the first magnet group is located in the first magnet groove, and the first magnet group cooperates with the first coil group to drive the prism carrier to rotate around the axis of the first shaft.

8. The lens driving mechanism according to claim 3, wherein The inner wall of the first groove or the second groove is provided with a mounting groove, and a first suction member is mounted in the mounting groove; At least a part of the cross shaft adopts a second suction member which is attracted to the first suction member, and the second suction member is arranged opposite to the first suction member.

9. The lens driving mechanism according to claim 2, wherein The base further comprises a side plate connected with the bottom plate; The lens drive mechanism further comprises a second coil group and a second magnet group, one of the second coil group and the second magnet group is mounted on the two sides of the prism carrier along the first direction, and the other is connected with the side plate; The second magnet group cooperates with the second coil group to drive the prism carrier to rotate around the axis of the second shaft.

10. The lens driving mechanism according to claim 7, wherein The base comprises two side plates arranged along the first direction and connected with the bottom plate, and each of the two side plates is provided with a second coil groove; The prism carrier is provided with a second magnet groove on each side along the first direction; The lens driving mechanism further comprises two second coil groups and two second magnet groups, the two second coil groups are respectively located in the two second coil grooves, and the two second magnet groups are respectively located in the two second magnet grooves; the second magnet group cooperates with the second coil group to drive the prism carrier to rotate around the axis of the second shaft.

11. The lens driving mechanism according to claim 2, wherein The bottom plate is provided with an avoiding through groove extending along the first direction; The bottom of the prism carrier comprises a first part and a second part, the bottom surface of the first part is higher than the bottom surface of the second part and is located above the bottom plate; The second part is located on the front side of the first part and in the avoiding through groove.

12. The lens driving mechanism according to claim 1, wherein The lens driving mechanism further comprises a sensor and an induction magnet, one of the sensor and the induction magnet is mounted on the prism carrier, and the other is mounted on the base; the sensor cooperates with the induction magnet to sense the position of the prism carrier.

13. The lens driving mechanism according to claim 2, wherein The lens driving mechanism further comprises a sensor and an induction magnet; The bottom surface of the prism carrier is provided with an induction magnet groove for mounting the induction magnet; The bottom plate is provided with a sensor mounting groove for mounting a sensor, and the sensor cooperates with the induction magnet to sense the position of the prism carrier.

14. The lens driving mechanism according to claim 2, wherein At least one end of the first shaft is a first magnetic member, and a second magnetic member that is attracted to the first magnetic member is mounted in each of the two support platforms; or At least the top end of the support platform is a second magnetic member that is attracted to the first magnetic member, or The base further comprises two side plates arranged along the first direction and connected with the bottom plate, and each of the two side plates is provided with a second magnetic member that is attracted to the first magnetic member.

15. The lens driving mechanism according to claim 10, wherein The first shaft is a first magnetic member; Each of the two side plates is provided with a positioning protrusion outside, the positioning protrusion is aligned with the two ends of the first shaft, and a second magnetic member of the first magnetic member is mounted in the positioning protrusion; The lens driving mechanism further comprises a circuit board connected with the base and provided with two positioning holes, and the two positioning holes are respectively mounted outside the two positioning protrusions; The first coil group, the second coil group and the circuit board are electrically connected.

16. The lens driving mechanism according to claim 1, wherein The lens driving mechanism further comprises a third coil group and a third magnet group, one of the third coil group and the third magnet group is connected with the lens carrier, and the other is connected with the base; The third magnet group cooperates with the third coil group to drive the lens carrier to move along the second direction.

17. The lens driving mechanism according to claim 10, wherein The lens driving mechanism further comprises a third coil group and a third magnet group, the third coil group is connected with the base; The third magnet group is connected with the lens carrier, and the third magnet group cooperates with the third coil group to drive the lens carrier to move along the second direction; A plurality of metal sheets are arranged in the base, and each of the metal sheets is attracted to the first magnet group, the second magnet group and the third magnet group.

18. The lens driving mechanism according to claim 1, wherein The lens carrier is rollably connected with the base.

19. The lens driving mechanism according to claim 1, wherein The lens driving mechanism further comprises an elastic member connected with the base and the prism carrier, and used for driving the prism carrier to reset.

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