Lens driving mechanism

By designing a lens driving mechanism including a movable carrier and a lens carrier, the thickness of the lens driving mechanism is reduced by using the mirror structure, the problem of excessive size of the lens driving mechanism in the prior art is solved, and the lightweight and compact lens driving effect is achieved .

CN119200131APending Publication Date: 2024-12-27HENAN CHENGDA NEW PRECISION TECH CO LTD
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Patent Information

Application Number
CN202411622978.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-14
Publication Date
2024-12-27

AI Technical Summary

Technical Problem

The existing periscope lens driving mechanism is large in size and cannot meet the market's lightweight demand for lens driving mechanisms.

Method used

A lens driving mechanism is designed, including a base, a movable carrier, a lens carrier and a second reflector. The movement of the movable carrier and a lens carrier is driven by the nodding coil and the shaking coil, and the light is reflected again on the imaging chip using the second reflector. , the thickness of the lens driving mechanism is reduced.

Benefits of technology

The lightweight and compact structure of the lens driving mechanism is realized, reducing the thickness of the electronic device while maintaining the effectiveness of the focus function.

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Abstract

The invention discloses a lens driving mechanism, which comprises a base, a movable carrier, a lens carrier and a second reflector, and is characterized in that the base extends along a first direction and is provided with an accommodating groove, and the accommodating groove comprises a front section, a middle section and a rear section deviating from the front section along the first direction. The movable carrier is installed on the front section of the containing groove, the movable carrier is used for installing a first reflecting mirror, and the first reflecting mirror is used for receiving light and reflecting the light at a certain angle. The lens carrier is installed in the middle section, and the lens carrier is used for installing a lens and is arranged to be capable of moving in the first direction. And the second reflecting mirror is mounted on the rear section. The lens carrier is used for installing a lens, the lens is used for receiving light rays reflected by the first reflector and transmitting the light rays to the second reflector after focusing, and the second reflector reflects the light rays again and projects the light rays to an imaging chip.
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Description

Technical Field

[0001] The present invention relates to the technical field of lens driving, and in particular to a lens driving mechanism. Background Art

[0002] With the development of technology, many electronic devices (such as smart phones or digital cameras) now have the function of taking photos or recording videos. These electronic devices are becoming more and more popular and are developing in the direction of convenient and lightweight designs to provide users with more choices.

[0003] Some electronic devices with camera or video recording functions are provided with a lens driving mechanism to drive the optical components of the lens to move, thereby achieving an automatic focusing function.

[0004] In the prior art, the periscope lens drive mechanism is relatively large in size and cannot meet the market demand for lightweight lens drive mechanisms. Summary of the invention

[0005] The object of the present invention is to provide a lighting system to solve the problems of the prior art.

[0006] In order to solve the above technical problems, an embodiment of the present invention provides a lens driving mechanism, comprising:

[0007] A base, the base extending along a first direction and having a receiving groove, the receiving groove including a front section, a middle section and a rear section away from the front section along the first direction;

[0008] A movable carrier, the movable carrier is installed at the front section of the containing groove, the movable carrier is used to install a first reflector, and the first reflector is used to receive light and reflect the light at a certain angle;

[0009] A lens carrier, which is installed in the middle section, is used to install a lens, and is configured to be movable along the first direction;

[0010] a second reflector, the second reflector being mounted on the rear section;

[0011] The lens carrier is used to install the lens, and the lens is used to receive the light reflected by the first reflector and emit it to the second reflector after focusing. The second reflector reflects the light again and projects it onto the imaging chip.

[0012] In one embodiment, the movable carrier is movably connected to the base.

[0013] In one embodiment, the base comprises a front side plate and a rear side plate, and the inner side surface of the front side plate is provided with a boss;

[0014] The movable carrier is provided with a fulcrum which can be movably connected to the boss.

[0015] In one embodiment, the lens driving mechanism further includes:

[0016] a nodding coil connected to one of the movable carrier and the base;

[0017] a nodding magnet connected to the other of the movable carrier and the base and cooperating with the nodding coil to drive the movable carrier to rotate around an axis extending in the second direction;

[0018] The second direction is perpendicular to the first direction.

[0019] In one embodiment, the lens driving mechanism further includes:

[0020] a shaking head coil connected to one of the movable carrier and the base;

[0021] A shaking head magnet is connected to the other of the movable carrier and the base and cooperates with the shaking head coil to drive the movable carrier to rotate around an axis extending along the first direction.

[0022] In one embodiment, the lens carrier is movably connected to the base.

[0023] In one embodiment, the middle section is provided with a first guide groove;

[0024] The lens carrier is provided with a second guide groove aligned with the first guide groove;

[0025] The lens driving mechanism further includes a roller, and the roller can be rotatably clamped between the first guide groove and the second guide groove.

[0026] In one embodiment, the lens driving mechanism further includes:

[0027] A zoom coil connected to one of the lens carrier and the base;

[0028] A zoom magnet is connected to the other of the lens carrier and the base and cooperates with the zoom coil to drive the lens carrier to move along the first direction.

[0029] In one embodiment, the base is provided with a plurality of mounting holes;

[0030] The nodding coil, the shaking coil and the zoom coil are respectively connected to the base and are respectively installed in the installation holes.

[0031] In one embodiment, the lens driving mechanism further comprises a circuit board, which is connected to the base and electrically connected to the shaking coil, the zoom coil and the nodding coil.

[0032] In one embodiment, the lens carrier is located between the front baffle and the rear baffle, and anti-collision rubber is respectively installed on the front face and / or the rear face of the lens carrier.

[0033] In one embodiment, the lens driving mechanism further includes a reset member, which is connected to the movable carrier and the base and is used to reset the movable carrier.

[0034] In one embodiment, the bottom wall of the receiving groove is further provided with a magnetic member;

[0035] The bottom surface of the lens carrier is also provided with a metal sheet attracted to the magnetic part.

[0036] In one embodiment, the lens driving mechanism further includes a housing, and the imaging chip is mounted on the housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 and Figure 2 FIG. 4 is an exploded view of a lens driving mechanism according to an embodiment of the present invention.

[0038] Figure 3 It is a stereoscopic diagram of a movable carrier and a lens carrier according to an embodiment of the present invention.

[0039] Figure 4 It is a three-dimensional diagram of a base according to an embodiment of the present invention.

[0040] Figure 5 yes Figure 4 Exploded view of the base of the illustrated embodiment.

[0041] Figure 6 yes Figure 1 Assembly diagram of the lens drive mechanism in the illustrated embodiment.

[0042] Figure 7 yes Figure 6 A cross-sectional view of the lens driving mechanism along line AA in the illustrated embodiment.

[0043] Reference numerals: 100, lens driving mechanism; 1, base; 10, receiving groove; 101, front section; 102, middle section; 103, rear section; 104, mounting seat; 11, bottom plate; 111, magnetic member; 112, first guide groove; 12, front side plate; 121, boss; 122, rotation groove; 14, left side plate; 15, right side plate; 16, bottom mounting hole; 17, side mounting hole; 18, front baffle plate; 19, rear baffle plate; 2 , movable carrier; 21, nodding magnet; 22, shaking head magnet; 23; supporting surface; 24, fulcrum; 25, spring installation part; 3, lens carrier; 31, zoom magnet; 32, anti-collision rubber; 33, metal sheet; 34, second guide groove; 35, roller; 4, first reflector; 5, second reflector; 6, spring; 7, circuit board; 71, nodding coil; 72, shaking head coil; 73, zoom coil; 8, housing; 81, light-shielding hole; DETAILED DESCRIPTION

[0044] In order to make the purpose, technical scheme and advantages of the present invention clearer, the following will be described in detail with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that in the various embodiments of the present invention, many technical details are provided in order to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed for protection in the claims of the present application can be implemented.

[0045] Unless the context requires otherwise, throughout the specification and claims, the word "comprise" and variations such as "include" and "have" should be construed in an open, inclusive sense, ie, should be interpreted as "including, but not limited to."

[0046] The following will be described in detail 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 accompanying drawings are not intended to limit the scope of the present invention, but are only intended to illustrate the essential spirit of the technical solution of the present invention.

[0047] References throughout the specification to "one 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. Thus, the appearances of "in one embodiment" or "in an embodiment" in various places throughout the specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any manner in one or more embodiments.

[0048] As used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and / or" unless the context clearly dictates otherwise.

[0049] In the following description, in order to clearly show the structure and working mode of the present invention, many directional words will be used for description, but the words "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", "down", etc. should be understood as convenient terms and should not be understood as restrictive terms.

[0050] The present invention relates to a lens driving mechanism 100, which is a periscope lens driving mechanism, comprising a base 1, a movable carrier 2 for mounting a first reflector 4, a lens carrier 3 for mounting a lens, and a second reflector 5, wherein the base 1 has a front end and a rear end along a first direction, the front end being close to a position where light enters, and the rear end being close to a position where light exits. The base 1 comprises a bottom plate 11, a front side plate 12, a rear side plate, a left side plate 14, and a right side plate 15, wherein the bottom plate 11 is a plate extending along the first direction, and the front side plate 12 and the rear side plate are arranged oppositely along the first direction and are respectively connected to the front end and the rear end of the bottom plate 11 along the first direction. The left side plate 14 and the right side plate 15 are arranged oppositely along a second direction and are respectively connected to both sides of the bottom plate 11 along the second direction, and the front side plate 12, the rear side plate, the left side plate 14, and the right side plate 15 are connected end to end to form an annular side plate. The front side plate 12 , the rear side plate, the left side plate 14 , the right side plate 15 and the bottom plate 11 are assembled to form a receiving groove 10 , and the receiving groove 10 is used to receive the movable carrier 2 , the lens carrier 3 and the second reflector 5 .

[0051] It should be understood that in other embodiments, the base 1 may also be configured to have other shapes, and the specific shape of the base 1 is not limited.

[0052] The receiving groove 10 includes a front section 101, a middle section 102 and a rear section 103 which are connected in sequence along the first direction. The front side wall of the front section 101 is formed by the front side plate 12, and the rear side wall of the rear section 103 is formed by the rear side plate.

[0053] The front side plate 12 is provided with a boss 121 which is connected to the inner side surface of the front side plate 12 or is formed integrally with the front side plate 12 . The boss 121 is basically located at the center of the front side plate 12 and a recessed rotation groove 122 is provided at one end away from the front side plate 12 .

[0054] The movable carrier 2 is located in the front section 101 and the front end surface of the movable carrier 2 is arranged opposite to the front side plate 12. The front end surface of the movable carrier 2 is also provided with a protruding fulcrum 24, and the fulcrum 24 is located in the rotation groove 122 and can rotate in the rotation groove 122, so that the movable carrier 2 and the front side plate 12 of the base 1 can be movably connected. Specifically, due to the cooperation between the boss 121 and the fulcrum 24, the movable carrier 2 can rotate around an axis extending along the second direction, that is, the movable carrier 2 can nod. In addition, the movable carrier 2 can also rotate around an axis extending along the first direction, that is, the movable carrier 2 can shake its head.

[0055] The top surface of the movable carrier 2 is recessed to form a supporting surface 23 , which extends toward the middle section 102 to the rear end surface of the movable carrier 2 . The supporting surface 23 is an inclined surface gradually away from the middle section 102 from the bottom to the top, and is used to support the first reflector 4 .

[0056] The lens carrier 3 is installed on the middle section 102 , and the lens carrier 3 can move along a first direction to adjust the focal length.

[0057] The second reflector 5 is fixedly mounted on the rear section 103 of the receiving groove 10. The second reflector 5 is tilted, and the distance between the second reflector 5 and the lens carrier 3 gradually increases from the bottom to the top. The first reflector 4 is also tilted, and the distance between the first reflector 4 and the lens carrier 3 also gradually increases from the bottom to the top.

[0058] The light enters the first reflector 4 and then enters the lens of the lens carrier 3 after being reflected by the first reflector 4. After the lens is focused, the light enters the second reflector 5. The second reflector 5 reflects the received light again to the imaging chip. The imaging chip can be installed on the top or bottom of the base 1. The position of the imaging chip can be changed according to the installation method of the second reflector 5. After the light enters the first reflector, it will be reflected 90°. After the lens receives the light reflected by the first reflector, it is projected to the second reflector after zooming. The light enters the second reflector and turns 90° again, finally realizing a 180° turn of the light path.

[0059] Preferably, the base 1 further comprises a mounting plate, which is located in the rear section 103 of the accommodating groove 10 and is inclined, the distance between the bottom surface of the mounting plate and the lens carrier 3 is smaller than the distance between the top surface of the mounting plate and the lens carrier 3, and the second reflector 5 is mounted on the top surface of the mounting plate. Of course, in other embodiments, a mounting seat 104 may be directly provided in the rear section 103, and the mounting seat 104 may have an inclined mounting surface, which may also support the second reflector 5. The present invention does not limit the embodiment in which the second reflector 5 is mounted in the rear section 103.

[0060] In the existing design, the second reflector 5 is generally not provided, and the imaging chip is directly installed on the rear end of the lens carrier 3 to directly receive the light emitted by the lens carrier 3. However, since the imaging chip is in the form of a thin sheet and has a certain width and length, after it is installed on the rear end of the lens carrier 3, the thickness of the entire lens drive mechanism 100 in the vertical direction will increase, that is, the thickness of the camera or mobile phone will increase, which cannot meet the market demand. However, the present invention uses the second reflector 5 to reflect the light of the lens carrier 3 again, so that the imaging chip is installed on the top surface or bottom surface of the base 1. The imaging chip is in the form of a thin sheet, and its thickness does not occupy a large space, and does not cause the thickness of the lens drive mechanism 100 in the vertical direction to increase, that is, the thickness of the lens drive mechanism 100 can be reduced, which is convenient for adapting to mobile phones or miniaturized cameras.

[0061] Optionally, the lens driving mechanism 100 further includes a nodding coil 71 and a nodding magnet 21, which are respectively mounted on the movable carrier 2 and the base 1. The nodding coil 71 can be mounted on the bottom of the movable carrier 2, while the nodding magnet 21 is mounted on the bottom plate 11 of the base 1. In a preferred embodiment, Figure 1-3 As shown, the nodding coil 71 can be installed on the bottom plate 11 of the base 1, and the nodding magnet 21 is installed on the bottom of the movable carrier 2. The nodding coil 71 and the nodding magnet 21 cooperate to drive the movable carrier 2 to nod and rotate around an axis parallel to the second direction.

[0062] Optionally, the lens driving mechanism 100 further includes a swaying coil 72 and a swaying magnet 22, which are respectively mounted on the movable carrier 2 and the base 1, the swaying coil 72 can be mounted on the left side plate 14 and the right side plate 15 of the base 1, and the swaying magnet 22 can be mounted on both sides of the movable carrier 2 along the second direction and aligned with the swaying coil 72. In a preferred embodiment, two swaying coils 72 are respectively mounted on the left side plate 14 and the right side plate 15 of the base 1, and two swaying magnets 22 are respectively mounted on both sides of the movable carrier 2 along the second direction, and cooperate with the two swaying coils 72 to drive the movable carrier 2 to sway and rotate around an axis in the first direction.

[0063] As a preferred embodiment, the lens driving mechanism 100 further includes a reset member, which is two groups of springs 6, which are of the same shape and are located on the inner side of the front side plate 12, and the two groups of springs 6 are symmetrically arranged relative to the boss 121 and are located between the front end of the movable carrier 2 and the front side plate 12, and the two groups of springs 6 are elastic and are respectively connected to the movable carrier 2 and the front side plate 12. The front end surface of the movable carrier 2 is provided with a protruding spring installation portion 25, which is divided into two parts and is arranged on both sides of the fulcrum 24 along the second direction, and is respectively connected to the two groups of springs 6, and can also provide a nodding space for the carrier to prevent the carrier from touching the front side plate 12 when moving.

[0064] Of course, the two sets of springs 6 can also be connected to the left side plate 14 and the right side plate 15 and the movable carrier 2. After the movable carrier 2 is reset, the two sets of springs 6 can drive the movable carrier 2 to reset. In addition, the two sets of springs 6 are installed on the inner side of the front side plate 12 without increasing the height of the lens driving mechanism 100, that is, without affecting the thickness of the mobile phone.

[0065] The lens carrier 3 is installed in the middle section 102 of the accommodating groove 10 . The lens carrier 3 can move along a first direction and drive the lens to focus.

[0066] In a specific embodiment, zoom coils 73 are respectively installed on both sides of the lens carrier 3 along the second direction, that is, zoom coils 73 are respectively installed on the left and right sides of the lens carrier 3, and zoom magnets 31 are respectively installed on the left plate 14 and the right plate 15 of the base 1, and the two zoom magnets 31 correspond to the two groups of zoom coils 73 along the second direction and drive the lens carrier 3 to move along the first direction. In addition, compared with being installed at the bottom of the carrier, the installation of the zoom magnets 31 on the left and right sides of the carrier will not affect the overall height of the lens driving mechanism 100, and it is easier to adapt to thin and light mobile phones.

[0067] As a preferred solution, the two zoom magnets 31 are respectively installed on the left and right sides of the lens carrier 3, and the two zoom coils 73 are respectively installed on the sides of the left plate 14 and the right plate 15 of the base 1. The zoom coil 73 needs to be connected to the external circuit and fixed on the base 1 without affecting the movement of the lens carrier 3.

[0068] Optionally, a zoom magnet 31 may be installed on the left or right side of the lens carrier 3, and a zoom coil 73 may be installed on the side of the left plate 14 or the right plate 15 of the base 1 and aligned with the zoom magnet 31. The cooperation of the two may also drive the lens carrier to move along the first direction.

[0069] In a preferred embodiment, the base 1 is provided with a plurality of mounting holes, a part of which is located on the bottom plate 11 of the base 1, and is defined as the bottom mounting hole 16. The bottom mounting hole 16 is formed by the bottom surface of the bottom plate 11 being recessed to the front section 101, and is used to install the nodding coil 71. The other part is located on the left side plate 14 and the right side plate 15 of the base 1, and the mounting holes located on the left side plate 14 and the right side plate 15 are defined as the side mounting holes 17, wherein another side mounting hole 17 is located at a position near the front end of the left side plate 14 and the right side plate 15, respectively, and the side mounting hole 17 is formed by the outer surface of the left side plate or the right side plate being recessed to the front section 101 of the receiving slot 10, and the two side mounting holes 17 are used to install two shaking coils 72. The other two or one side mounting holes 17 are located in the middle of the left side plate 14 and the right side plate 15 and are formed by the left side plate or the right side plate being recessed toward the middle section 102 of the receiving slot 10, and the two or one side mounting holes 17 are used to install the zoom coil 73. The mounting holes on the base 1 can not only reduce the space occupied by the nodding coil 71 , the shaking coil 72 and the zoom coil 73 , but also reduce the weight of the lens driving mechanism 100 , further improving the lightness of the lens driving mechanism 100 .

[0070] As a preferred solution, the lens driving mechanism 100 also includes a circuit board 7, which is connected to the base 1 and is electrically connected to the oscillating coil 72, the zoom coil 73 and the nodding coil 71. Specifically, the circuit board 7 includes three integrally formed parts, wherein the first part is attached to the outer side surface of the left side plate 14, the second part is attached to the bottom surface of the bottom plate 11 and is electrically connected to the nodding coil 71 in the bottom mounting hole 16, and the third part is attached to the outer side surface of the right side plate 15, and the first part and the second part are electrically connected to the oscillating coil 72 and the zoom coil 73 of the side mounting hole 17, respectively. The nodding coil 71, the oscillating coil 72 and the zoom coil 73 are all arranged on the base 1 and are electrically connected to the same circuit board 7, which can reduce the circuits and will not affect the movement of the movable carrier 2 and the lens carrier 3.

[0071] The circuit board 7 is also provided with a sensor, which is located in the side mounting hole 17 and is used to sense the position of the movable carrier 2. Of course, another sensor can also be provided to sense the position of the lens carrier 3.

[0072] Preferably, the inner walls of the left side plate 14 and the right side plate 15 are respectively provided with a front baffle 18 and a rear baffle 19, the two front baffles 18 are aligned along the second direction and are located between the front section 101 and the middle section 102 of the receiving groove 10, and the two rear baffles 19 are aligned along the second direction and are located between the middle section 102 and the rear section 103 of the receiving groove 10. The lens carrier 3 is located between the front baffle 18 and the rear baffle 19 and can move between the front baffle 18 and the rear baffle 19 along the first direction, and the front baffle 18 and the rear baffle 19 can limit the movement range of the lens carrier 3.

[0073] As a preferred solution, the front and rear faces of the lens carrier 3 are respectively installed with anti-collision rubber 32, or only the front or rear face is provided with anti-collision rubber 32, to prevent the lens carrier 3 from colliding with the front baffle 18 and the rear baffle 19 to play a buffering role.

[0074] As a preferred solution, a guide groove extending along the first direction is provided on the top surface of the bottom plate 11 , and the guide groove is a first guide groove 112 and is located in the middle section 102 of the accommodating groove 10 .

[0075] The bottom surface of the lens carrier 3 is provided with a second guide groove 34, which is aligned with the first guide groove 112 in the vertical direction, and a roller 35 is further provided in the first guide groove 112, which is clamped between the second guide groove 34 and the first guide groove 112, and can support the lens carrier 3 to move along the first direction, avoid direct contact between the lens carrier 3 and the bottom plate 11, replace static friction with rolling friction, and reduce the resistance of the lens carrier 3. In addition, in other embodiments, a ball bearing can be used instead of the roller 35, or a suspension wire can be used to support the lens carrier 3 to be suspended on the bottom plate 11.

[0076] In an optional solution, the bottom surface of the lens carrier 3 may be provided with a plurality of second guide grooves 34, and the top surface of the bottom plate 11 may be provided with a plurality of corresponding first guide grooves, the second guide grooves 34 may be semicircular grooves or elongated grooves, the first guide groove 112 needs to be an elongated groove extending along the first direction, and the first guide groove and the second guide groove are connected by ball rolling. In some other embodiments, the second guide groove 34 may be an elongated groove extending along the second direction, and the first guide groove is a semicircular groove.

[0077] As a preferred solution, a magnetic component 111 is embedded in the bottom plate 11 and is located in the middle section 102. A metal sheet 33 that is attracted to the magnetic component 111 is also installed on the bottom surface of the lens carrier 3. The magnetic component can be a magnetic strip or a coil. When the coil is energized, it is attracted to the metal sheet 33 to prevent the carrier from detaching from the bottom plate 11 or shaking during use.

[0078] The housing 8 is covered on the outside of the annular side plate and connected to the bottom plate 11. The top wall of the housing 8 is provided with a light-shielding hole 81, which is aligned with the first reflector 4 to avoid light entering the first reflector 4. In addition, the imaging chip is mounted on the top wall of the housing 8 and is located above the second reflector 5, and the light reflected by the second reflector 5 can enter the imaging chip.

[0079] The lens driving mechanism of the present invention has a compact structure and a small height in the vertical direction, and can reduce the thickness of the electronic device without affecting the focusing function.

[0080] Preferred embodiments of the present invention have been described above in detail, but it should be understood that aspects of the embodiments can be modified, if necessary, to employ aspects, features and concepts of the various patents, applications and publications to provide further embodiments.

[0081] These and other changes can be made to the embodiments in light of the above detailed description.In general, in the claims, the terms used should not be considered limited to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which these claims are entitled.

[0082] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A lens driving mechanism, characterized in that: include: A base, the base extending along a first direction and having a receiving groove, the receiving groove including a front section, a middle section and a rear section away from the front section along the first direction; A movable carrier, the movable carrier is installed at the front section of the containing groove, the movable carrier is used to install a first reflector, and the first reflector is used to receive light and reflect the light at a certain angle; A lens carrier, which is installed in the middle section, is used to install a lens, and is configured to be movable along the first direction; a second reflector, the second reflector being mounted on the rear section; The lens carrier is used to install the lens, and the lens is used to receive the light reflected by the first reflector and emit it to the second reflector after focusing. The second reflector reflects the light again and projects it onto the imaging chip.

2. The lens driving mechanism according to claim 1, characterized in that: The movable carrier is movably connected to the base.

3. The lens driving mechanism according to claim 2, characterized in that: The base comprises a front side plate and a rear side plate, and the inner side surface of the front side plate is provided with a boss; The movable carrier is provided with a fulcrum which can be movably connected to the boss.

4. The lens driving mechanism according to claim 2, characterized in that: The lens driving mechanism also includes: a nodding coil connected to one of the movable carrier and the base; a nodding magnet connected to the other of the movable carrier and the base and cooperating with the nodding coil to drive the movable carrier to rotate around an axis extending in the second direction; The second direction is perpendicular to the first direction.

5. The lens driving mechanism according to claim 4, characterized in that: The lens driving mechanism also includes: a shaking head coil connected to one of the movable carrier and the base; A shaking head magnet is connected to the other of the movable carrier and the base and cooperates with the shaking head coil to drive the movable carrier to rotate around an axis extending in the first direction.

6. The lens driving mechanism according to claim 5, characterized in that: The lens carrier is movably connected to the base.

7. The lens driving mechanism according to claim 6, characterized in that: The middle section is provided with a first guide groove; The lens carrier is provided with a second guide groove aligned with the first guide groove; The lens driving mechanism further includes a roller, and the roller can be rotatably clamped between the first guide groove and the second guide groove.

8. The lens driving mechanism according to claim 6, characterized in that: The lens driving mechanism also includes: A zoom coil connected to one of the lens carrier and the base; A zoom magnet is connected to the other of the lens carrier and the base and cooperates with the zoom coil to drive the lens carrier to move along the first direction.

9. The lens driving mechanism according to claim 8, characterized in that: The base is provided with a plurality of mounting holes; The nodding coil, the shaking coil and the zoom coil are respectively connected to the base and are respectively installed in the installation holes.

10. The lens driving mechanism according to claim 9, characterized in that: The lens driving mechanism further comprises a circuit board, which is connected to the base and electrically connected to the shaking coil, the zoom coil and the nodding coil.

11. The lens driving mechanism according to claim 1, characterized in that: The lens carrier is located between the front baffle and the rear baffle, and anti-collision rubber is respectively installed on the front face and / or the rear face of the lens carrier.

12. The lens driving mechanism according to claim 1, characterized in that: The lens driving mechanism further comprises a reset member, which is connected to the movable carrier and the base and is used for resetting the movable carrier.

13. The lens driving mechanism according to claim 1, characterized in that: The bottom wall of the receiving groove is also provided with a magnetic member; The bottom surface of the lens carrier is also provided with a metal sheet attracted to the magnetic part.

14. The lens driving mechanism according to claim 1, characterized in that: The lens driving mechanism also includes a housing, and the imaging chip is mounted on the housing.

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