Lens driving device

Abstract

The utility model belongs to the technical field of optical imaging equipment, and particularly relates to a lens driving device, which comprises a base, prism carriers, a lens carrier, a prism driving mechanism and a zoom driving mechanism, the prism carriers comprise a first prism carrier and a second prism carrier, the bottom end of the second prism carrier is provided with a head shaking ball, and the head shaking ball abuts against the inner bottom end of the base. The second prism carrier moves around the first direction with the oscillating ball as a fulcrum, a nodding ball is arranged at the top end of the second prism carrier and abuts against the bottom end of the first prism carrier, and the first prism carrier moves around the second direction with the nodding ball as a fulcrum. According to the utility model, the nodding ball and the head shaking ball provide a rolling support effect, so that the nodding action and the head shaking action are light and smooth, the movement resistance of the prism carrier is reduced, and the stable nodding action and the head shaking action of the prism carrier are realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of optical imaging devices, and particularly relates to a lens driving device. Background Art

[0002] With the development of technology, many current electronic devices (such as smart phones or digital cameras) have the functions of taking pictures or videos. The use of these electronic devices is becoming more and more common, and they are developing towards a convenient, thin and light design direction to provide users with more choices.

[0003] Among them, the lens driving device is used in the lightweight design because it can greatly reduce the overall thickness and weight of the device. The structure of the lens driving device usually includes two parts, namely the lens part and the prism part. The prism part is arranged at the rear end, and an imaging chip is arranged at the front end of the lens part. The light passes through the prism part and is reflected to convert the light path to the lens part, and then reaches the imaging chip after zooming through the lens part.

[0004] Specifically, the prism part can usually nod and shake on the base to change the light angle. These actions need to be realized by the prism magnet and the prism coil cooperating with it. How to realize the stable nodding and shaking actions of the prism part is a problem that needs to be solved at present. Summary of the Utility Model

[0005] Aiming at the above technical problems, the utility model aims to provide a lens driving device.

[0006] A lens driving device includes a base, a prism carrier, a lens carrier, a prism driving mechanism and a zoom driving mechanism. The lens carrier and the prism carrier are arranged in the base along a first direction. The zoom driving mechanism drives the lens carrier to move along the first direction, and the prism driving mechanism drives the prism carrier to move around the first direction and a second direction perpendicular to the first direction.

[0007] The prism carrier includes a first prism carrier and a second prism carrier arranged at the lower end of the first prism carrier. A shaking head ball is arranged at the bottom end of the second prism carrier, and the shaking head ball abuts against the inner bottom end of the base. The second prism carrier moves around the first direction with the shaking head ball as a fulcrum. A nodding ball is arranged at the top end of the second prism carrier, and the nodding ball abuts against the bottom end of the first prism carrier. The first prism carrier moves around the second direction with the nodding ball as a fulcrum.

[0008] Optionally, a shaking head ball groove is arranged between the bottom end of the second prism carrier and the base, and a movable ball is connected in the shaking head ball groove in a rolling manner.

[0009] Optionally, three swaying ball grooves are provided between the bottom end of the second prism carrier and the base. The three swaying ball grooves are distributed in a triangular pattern along the first direction. The swaying ball is fixed in the swaying ball groove located in the middle, and the movable balls are rotatably connected in the swaying ball grooves located on both sides.

[0010] Optionally, a support groove is provided at the bottom end of the first prism carrier, and a support protrusion is provided on the second prism carrier. A nodding ball is provided at the top end of the support protrusion. The support protrusion cooperates with the support groove, and the nodding ball abuts against the top groove wall of the support groove.

[0011] Optionally, two nodding balls are provided at the top end of the second prism carrier along the second direction.

[0012] Optionally, the prism driving mechanism includes a nodding coil provided at the rear side inside the base, a swaying coil provided at the bottom end inside the base, a nodding magnet provided at the rear side of the first prism carrier, and a swaying magnet provided at the bottom end of the second prism carrier. The nodding coil and the nodding magnet are arranged opposite to each other, and the swaying coil and the swaying magnet are arranged opposite to each other.

[0013] Optionally, there are two nodding coils, and the two nodding coils are arranged at the rear side inside the base along the second direction;

[0014] The nodding magnets are in two groups, and the two groups of nodding magnets are arranged at the rear side of the first prism carrier along the second direction. Each group of nodding magnets has one or several nodding magnets arranged side by side.

[0015] Optionally, there are two swaying coils, and the two swaying coils are arranged at the bottom end inside the base along the second direction;

[0016] The swaying magnets are in two groups, and the two groups of swaying magnets are arranged at the bottom end of the second prism carrier along the second direction. Each group of swaying magnets has one or several swaying magnets arranged side by side.

[0017] Optionally, a built-in metal of the first prism carrier is provided inside the first prism carrier. The built-in metal of the first prism carrier has a rear side, and the rear side of the built-in metal of the first prism carrier is arranged opposite to and adsorbed with the nodding magnet.

[0018] Optionally, a built-in metal of the first prism carrier is provided inside the first prism carrier, and a first prism carrier adsorption metal is provided at the bottom end of the middle part of the built-in metal of the first prism carrier;

[0019] A built-in metal of the second prism carrier is provided inside the second prism carrier, and an adsorption magnet mounting part is provided at the top end of the middle part of the built-in metal of the second prism carrier.

[0020] A first prism carrier adsorption magnet is provided on the second prism carrier. The first prism carrier adsorption magnets are respectively arranged opposite to and adsorbed with the first prism carrier adsorption metals, and are arranged opposite to and adsorbed with the adsorption magnet mounting parts.

[0021] Optionally, a second prism carrier built-in metal is provided inside the second prism carrier. The bottom end of the second prism carrier built-in metal is arranged opposite to and adsorbed with the shaking magnet.

[0022] Optionally, a bottom adsorption iron sheet is provided inside the base. The bottom adsorption iron sheet is located below the shaking coil, and is arranged opposite to and adsorbed with the shaking magnet.

[0023] Optionally, the zoom driving mechanism includes a zoom coil provided on the inner side wall of the base and a zoom magnet provided on the side wall of the lens carrier. The zoom coil is arranged opposite to the zoom magnet.

[0024] Optionally, a cover plate for fixing the lens is detachably provided at the top end of the lens carrier.

[0025] Optionally, anti-collision parts are respectively provided at the front and rear ends of the lens carrier.

[0026] Optionally, a lens ball groove is provided between the bottom end of the lens carrier and the inner bottom end of the base, and lens balls are connected in a rolling manner in the lens ball groove.

[0027] Optionally, a lens carrier adsorption magnet is provided at the bottom end of the lens carrier, and a base built-in metal is provided inside the base. The base built-in metal is arranged opposite to and adsorbed with the lens carrier adsorption magnet;

[0028] A lens carrier built-in metal is provided inside the lens carrier. The bottom end of the lens carrier built-in metal is arranged opposite to and adsorbed with the lens carrier adsorption magnet.

[0029] Optionally, a lens carrier built-in metal is provided inside the lens carrier. The lens carrier built-in metal has a side surface, and the side surface of the lens carrier built-in metal is arranged opposite to and adsorbed with the zoom magnet.

[0030] Optionally, the lens driving device further includes a housing. The housing is detachably connected to the base and forms a hollow cavity. The prism carrier, the lens carrier, the prism driving mechanism and the zoom driving mechanism are arranged in the hollow cavity.

[0031] Optionally, a downward depression is provided on the outer shell, and an upward protrusion is provided at the top of the prism carrier. After the outer shell is detachably connected to the base, the depression is located on the side of the protrusion, forming a limiting structure between the outer shell and the base.

[0032] Optionally, the two sides of the rear end of the outer shell respectively have the depressions, and the depressions straddle the rear side and the side of the outer shell. The rear side and the two sides of the top of the prism carrier respectively have the protrusions. After the outer shell is detachably connected to the base, the depressions are located between two adjacent protrusions.

[0033] Optionally, the front side of the depression is an inclined surface, and the rear sides of the protrusions located on both sides of the prism carrier are inclined surfaces. The inclination angles of the inclined surfaces of the depression are the same as those of the inclined surfaces of the protrusions.

[0034] Beneficial effects: The present utility model has at least one or more of the following advantages: The prism carrier of the present utility model is a split structure, which are respectively a first prism carrier and a second prism carrier, and a nodding ball and a shaking ball are additionally provided, so that the nodding action and the shaking action of the prism carrier are respectively performed by the first prism carrier with the nodding ball as a fulcrum relative to the second prism carrier for nodding action, and by the second prism carrier with the shaking ball as a fulcrum relative to the base for shaking action. Through the rolling support of the nodding ball and the shaking ball, the nodding action and the shaking action are made light and smooth, the movement resistance of the prism carrier is reduced, and the prism carrier realizes stable nodding action and shaking action. Description of the Drawings

[0035] Figure 1 is a schematic structural view of the present utility model;

[0036] Figure 2 is Figure 1 the A-A sectional view of;

[0037] Figure 3 is Figure 1 the exploded view of;

[0038] Figure 4 is Figure 3 the further exploded view of;

[0039] Figure 5 is a schematic structural view of the base of the present utility model;

[0040] Figure 6 is a schematic structural view of the prism carrier of the present utility model;

[0041] Figure 7 is Figure 6 the exploded view of;

[0042] Figure 8 Another perspective view of Figure 7 ;

[0043] Figure 9 A schematic structural view of the lens carrier of the present utility model;

[0044] Figure 10 An exploded view of the positional relationship among the coils, magnets, built-in metals, adsorption magnets, and adsorption iron sheets of the present utility model;

[0045] Figure 11 Another perspective view of Figure 10 ; Detailed implementation manners

[0046] The following will describe in detail the preferred embodiments of the present utility model with reference to the accompanying drawings to more clearly understand the purpose, features, and advantages of the present utility model. It should be understood that the embodiments shown in the drawings are not limitations on the scope of the present utility model, but only illustrate the essential spirit of the technical solution of the present utility model.

[0047] In the following description, for the purpose of explaining various disclosed embodiments, certain specific details are set forth to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the relevant art will recognize that the embodiments can be practiced without one or more of these specific details. In other instances, well-known devices, structures, and techniques associated with the present application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0048] References to "one embodiment" or "an embodiment" throughout the specification mean 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" throughout the specification do not necessarily all refer to the same embodiment. Additionally, the particular features, structures, or characteristics may be combined in any manner in one or more embodiments.

[0049] In the following description, in order to clearly show the structure and working mode of the present utility model, many directional terms will be used for description. However, terms such as "front", "rear", "left", "right", "outer", "inner", "outward", "inward", "up", "down", etc. should be understood as convenient terms and should not be understood as limiting terms.

[0050] In the following description, the first direction is defined as the direction along the optical axis of the lens, the second direction is the direction perpendicular to the first direction and parallel to the lower surface of the base, and the third direction is the direction perpendicular to the first direction and the second direction, that is, the third direction is the direction of the plumb line when the base is placed normally. That is to say, taking the third direction as the Z-axis and the first direction as the X-axis to establish a coordinate system, then the second direction is the Y-axis.

[0051] Referring to Figures 1 to 4 , this embodiment provides a lens driving device, which includes a base 10, a prism carrier, a lens carrier 60, a prism driving mechanism and a zoom driving mechanism. Among them, the prism carrier includes a first prism carrier 20 and a second prism carrier 30, and the second prism carrier 30 is arranged at the lower end of the first prism carrier 20.

[0052] The prism carrier and the lens carrier 60 are arranged in the base 10 along the first direction. Specifically, a prism carrier accommodating cavity and a lens carrier accommodating cavity may be arranged in the base 10 along the first direction. The prism carrier is used to mount the prism 91 and is arranged in the prism carrier accommodating cavity, and the lens carrier 60 is used to mount the lens 92 and is arranged in the lens carrier accommodating cavity. Among them, the prism 91 is mounted on the first prism carrier 20.

[0053] The zoom driving mechanism drives the lens carrier 60 to move along the first direction to achieve the zoom function, and the prism driving mechanism drives the prism carrier to move around the first direction and the second direction perpendicular to the first direction to achieve the optical image stabilization function. The prism carrier drives the prism to nod and shake its head. The prism can deflect the direction of the passing light, and the prism carrier can move the prism, thereby changing the irradiation direction of the light. Among them, the nodding action refers to the action of the prism carrier rotating around the second direction, and the shaking head action refers to the action of rotating around the first direction.

[0054] Referring to Figure 6 and Figure 8 , a shaking head ball 41 is arranged at the bottom end of the second prism carrier 30, and the shaking head ball 41 abuts against the inner bottom end of the base 10. The second prism carrier 30 moves around the first direction with the shaking head ball 41 as a fulcrum. Referring to Figure 7 , a nodding ball 42 is arranged at the top end of the second prism carrier 30, and the nodding ball 42 abuts against the bottom end of the first prism carrier 20. The first prism carrier 20 moves around the second direction with the nodding ball 42 as a fulcrum.

[0055] The utility model provides a rolling support function through the shaking head ball 41 and the nodding ball 42, making the nodding action and the shaking head action light and smooth, reducing the movement resistance of the prism carrier, and enabling the prism carrier to achieve stable nodding and shaking head actions.

[0056] In one embodiment, referring to Figure 5 and Figure 6 , shaking head ball grooves are respectively arranged at the bottom end of the second prism carrier 30 and the inner bottom end of the base 10, and a movable ball 43 is connected in the shaking head ball grooves in a rolling manner.

[0057] The movable ball 43 is not fixedly connected to the base 10 or the second prism carrier 30, and it can move and roll in the shaking ball groove. When the second prism carrier 30 performs a shaking motion, the movable ball 43 rolls in the shaking ball groove.

[0058] In one embodiment, referring to Figure 5 and Figure 6 , three shaking ball grooves are respectively provided at the bottom end of the second prism carrier 30 and the inner bottom end of the base 10. The three shaking ball grooves are distributed in a triangular pattern along the first direction. A shaking ball 41 is fixed in the shaking ball groove at the front end of the middle part, and a movable ball 43 is rotatably connected in the shaking ball grooves at both sides of the rear end.

[0059] Among them, the shaking ball 41 is fixed in the shaking ball groove at the bottom end of the second prism carrier 30, and the bottom end of the shaking ball 41 abuts (contacts) against the shaking ball groove at the inner bottom end of the base 10.

[0060] In one embodiment, referring to Figure 7 and Figure 8 , a support groove 21 is provided at the bottom end of the first prism carrier 20, a support protrusion 31 is provided on the second prism carrier 30, a nodding ball 42 is provided at the top end of the support protrusion 31, the support protrusion 31 is inserted into the support groove 21, and the nodding ball 42 abuts against the top groove wall of the support groove 21.

[0061] In one embodiment, referring to Figure 7 , two nodding balls 42 are provided along the second direction at the top end of the second prism carrier 30.

[0062] Specifically, the two nodding balls 42 are preferably located on the left and right sides at the top end of the second prism carrier 30.

[0063] In one embodiment, referring to Figure 5 , Figure 6 and Figure 8 , the prism driving mechanism includes a nodding coil 51 provided at the rear side inside the base 10, a shaking coil 52 provided at the inner bottom end of the base 10, a nodding magnet 53 provided in the nodding magnet mounting groove 25 at the rear side of the first prism carrier 20, and a shaking magnet 54 provided at the bottom end of the second prism carrier 30. The nodding coil 51 and the nodding magnet 53 are oppositely arranged and drive the first prism carrier 20 to perform a nodding motion under the cooperation of the two. The shaking coil 52 and the shaking magnet 54 are oppositely arranged and drive the second prism carrier 30 and the first prism carrier 20 to perform a shaking motion under the cooperation of the two.

[0064] Among them, the nodding coil 51 and the shaking coil 52 are both powered by the internal base circuit inside the base 10.

[0065] In one embodiment, referring to Figure 5, there are two nodding coils 51, and the two nodding coils 51 are arranged on the inner rear side of the base 10 along the second direction.

[0066] Referring to Figure 6 , there are two groups of nodding magnets 53, and the two groups of nodding magnets 53 are arranged on the rear side of the first prism carrier 20 along the second direction. Each group of nodding magnets 53 has one or several nodding magnets 53 arranged side by side.

[0067] When each group has several nodding magnets 53, the several nodding magnets 53 can be arranged side by side along the second direction, or can be arranged side by side along the third direction as shown in Figure 6 .

[0068] In an embodiment, referring to Figure 5 , there are two shaking coils 52, and the two shaking coils 52 are arranged at the inner bottom end of the base 10 along the second direction.

[0069] Referring to Figure 6 and Figure 8 , there are two groups of shaking magnets 54, and the two groups of shaking magnets 54 are arranged at the bottom end of the second prism carrier 30 along the second direction. Each group of shaking magnets 54 has one or several shaking magnets 54 arranged side by side.

[0070] When each group has several shaking magnets 54, the several shaking magnets 54 can be arranged side by side along the second direction, or can be arranged side by side along the first direction as shown in Figure 6 .

[0071] In an embodiment, referring to Figure 10 and Figure 11 , a first prism carrier built-in metal 22 is arranged in the first prism carrier 20. The first prism carrier built-in metal 22 has a rear side surface, and the rear side surface of the first prism carrier built-in metal 22 is arranged opposite to and adsorbed with the nodding magnet 53 to improve the connection stability of the nodding magnet 53.

[0072] In an embodiment, referring to Figure 10 and Figure 11 , a first prism carrier built-in metal 22 is arranged in the first prism carrier 20, and a first prism carrier adsorption metal 23 is arranged at the middle bottom end of the first prism carrier built-in metal 22.

[0073] A second prism carrier built-in metal 32 is arranged in the second prism carrier 30, and an adsorption magnet installation part 33 is arranged at the middle top end of the second prism carrier built-in metal 32.

[0074] A first prism carrier adsorption magnet 34 is provided on the second prism carrier 30. The first prism carrier adsorption magnet 34 is disposed opposite to the first prism carrier adsorption metal 23 and adsorbs each other. The first prism carrier adsorption magnet 34 is disposed opposite to the adsorption magnet mounting portion 33 and adsorbs each other to improve the connection stability between the first prism carrier 20 and the second prism carrier 30.

[0075] In one embodiment, referring to Figure 10 and Figure 11 , a second prism carrier built-in metal 32 is provided inside the second prism carrier 30. The bottom end of the second prism carrier built-in metal 32 is disposed opposite to the swing magnet 54 and adsorbs each other to improve the connection stability of the swing magnet 54.

[0076] In one embodiment, a bottom adsorption iron sheet is provided inside the base 10. The bottom adsorption iron sheet is located below the swing coil 52. The bottom adsorption iron sheet is disposed opposite to the swing magnet 54 and adsorbs each other to improve the connection stability between the second prism carrier 30 and the base 10.

[0077] In one embodiment, referring to Figure 4 and Figure 10 , the zoom drive mechanism includes a zoom coil 55 provided on the inner side wall of the base 10 and a zoom magnet 56 provided on the side wall of the lens carrier 60. The zoom coil 55 is disposed opposite to the zoom magnet 56, and the two cooperate to generate a driving force to cause the lens carrier 60 to perform a zoom movement action.

[0078] Among them, the zoom coil 55 is powered by a base built-in circuit inside the base 10.

[0079] In one embodiment, referring to Figure 3 , Figure 4 and Figure 9 , a cover plate 61 is detachably provided at the top end of the lens carrier 60. The cover plate 61 is used to fix the lens 92.

[0080] In one embodiment, referring to Figure 4 and Figure 9 , anti-collision portions 62 are respectively provided at the front and rear ends of the lens carrier 60 to prevent collision with the base 10 or the rear side of the lens carrier 60.

[0081] The anti-collision portion 62 is made of an elastic material, such as a buffer material such as rubber, plastic or silica gel. Preferably, the anti-collision portion 62 is an anti-collision soft rubber made of soft glue.

[0082] In one embodiment, referring to Figure 5 and Figure 9 , a lens ball groove is provided between the bottom end of the lens carrier 60 and the inner bottom end of the base 10. A lens ball 44 is rotatably connected in the lens ball groove to reduce the friction when the lens carrier 60 moves.

[0083] Specifically, longer lens ball grooves 66 can be respectively arranged on the left and right sides at the bottom end of the lens carrier 60. A shorter lens ball groove is arranged on one side at the bottom end inside the base 10, and a lens ball 44 is arranged therein. Two shorter lens ball grooves are arranged on the other side at the bottom end inside the base 10, and lens balls 44 are respectively arranged therein. The length directions of the lens ball grooves are all the first direction, and each lens ball 44 can freely roll in the upper and lower two lens ball grooves.

[0084] In an embodiment, referring to Figure 10 and Figure 11 , a lens carrier adsorption magnet 63 is arranged at the bottom end of the lens carrier 60, and a base built-in metal is arranged inside the base 10. The base built-in metal and the lens carrier adsorption magnet 63 are arranged opposite to each other and adsorb each other. A lens carrier built-in metal 64 is arranged inside the lens carrier 60. The bottom end of the lens carrier built-in metal 64 is arranged opposite to the lens carrier adsorption magnet 63 and adsorb each other, making the structure between the lens carrier 60 and the base 10 more stable.

[0085] Specifically, referring to Figure 9 , an adsorption magnet installation groove 65 can be arranged at the bottom end of the lens carrier 60, and the lens carrier adsorption magnet 63 is installed in the adsorption magnet installation groove 65.

[0086] In an embodiment, referring to Figure 10 and Figure 11 , a lens carrier built-in metal 64 is arranged inside the lens carrier 60. The lens carrier built-in metal 64 has a side surface. The side surface of the lens carrier built-in metal 64 is arranged opposite to the zoom magnet 56 and adsorb each other to improve the connection stability of the zoom magnet 56.

[0087] In an embodiment, referring to Figure 1 and Figure 3 , the lens driving device further includes a housing 70. The housing 70 is detachably connected to the base 10 and forms a hollow cavity. The prism carrier, the lens carrier 60, the prism driving mechanism and the zoom driving mechanism are arranged in the hollow cavity.

[0088] In an embodiment, referring to Figure 1 and Figure 3 , a downward depression 71 is arranged on the housing 70. The depression 71 is equivalent to a downward protrusion relative to the top surface inside the housing 70.

[0089] Referring to Figure 3 and Figure 7 , a upward protrusion 24 is arranged at the top end of the first prism carrier 20.

[0090] After the housing 70 is detachably connected to the base 10, the recess 71 is located on the side of the protrusion 24, and there is a preset small gap between them. The two cooperate with each other to form a limiting structure between the housing 70 and the base 10. Among them, the gap between the two can be determined according to the anti-shake floating requirements of the actual prism carrier, so as not to interfere with the normal nodding and shaking actions of the prism carrier.

[0091] Generally, when the prism carrier performs nodding and shaking actions, the top of the first prism carrier 20 will not touch the housing 70. However, in extreme cases, such as when the terminal equipped with the lens driving device falls from a height and other special scenarios, the prism carrier may have a large amount of movement, and each adsorption part may become detached. At this time, the top of the first prism carrier 20 may touch the housing 70.

[0092] If the above-mentioned recess 71 and protrusion 24 are not designed, the first prism carrier 20 may collide with the housing 70 at the front end, the rear end, or the side. This kind of collision is uncontrollable, and the transmission point of the collision force is also uncontrollable, which will cause the prism carrier to not return to its position after the collision, resulting in the problem that the anti-shake operation cannot be performed.

[0093] In this embodiment, through the cooperation of the above-mentioned recess 71 and protrusion 24, the first prism carrier 20 can only be restricted to shake within a small range, and the collision contact between the prism carrier and the housing 70 can only be restricted between the recess 71 and the protrusion 24, ultimately achieving the purpose of controlling the contact surface and the transmission point of the collision force.

[0094] In one embodiment, referring to Figure 1 and Figure 3 , there are recesses 71 on both sides of the rear end of the housing 70. The recesses 71 straddle the rear side and the side of the housing 70. The rear side and both sides of the top of the prism carrier have protrusions 24. After the housing 70 is detachably connected to the base 10, each recess 71 is located between two adjacent protrusions 24.

[0095] In one embodiment, referring to Figure 3 , the front side surface of the recess 71 is an inclined surface 71a. Referring to Figure 7 , the rear side surfaces of the protrusions 24 located on both sides of the prism carrier are inclined surfaces 24a. The angle of the inclined surface 71a of the recess 71 is the same as the inclination angle of the inclined surface 24a of the protrusion 24.

[0096] The preferred embodiments of the present invention have been described in detail above. However, it should be understood that after reading the above teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention. These equivalent forms also fall within the scope defined by the appended claims of this application.

Claims

1. A lens driving device, comprising a base, a prism carrier, a lens carrier, a prism driving mechanism and a zoom driving mechanism, wherein the lens carrier and the prism carrier are arranged in the base along a first direction, the zoom driving mechanism drives the lens carrier to move along the first direction, and the prism driving mechanism drives the prism carrier to move around the first direction and a second direction perpendicular to the first direction; It is characterized in that The prism carrier includes a first prism carrier and a second prism carrier arranged at the lower end of the first prism carrier, a shaking ball is arranged at the bottom end of the second prism carrier, the shaking ball abuts the bottom end of the base, and the second prism carrier moves around the first direction with the shaking ball as a fulcrum, and a nodding ball is arranged at the top end of the second prism carrier, the nodding ball abuts the bottom end of the first prism carrier, and the first prism carrier moves around the second direction with the nodding ball as a fulcrum.

2. The lens driving device according to claim 1, wherein: An oscillating ball groove is provided between the bottom end of the second prism carrier and the base, and a movable ball is rollingly connected in the oscillating ball groove.

3. The lens driving device according to claim 2, wherein: Three shaking head ball grooves are arranged between the bottom end of the second prism carrier and the base, and the three shaking head ball grooves are distributed in a herringbone shape along the first direction. The shaking head ball is fixed in the middle shaking head ball groove, and the movable balls are rollingly connected in the shaking head ball grooves on both sides.

4. The lens driving device according to claim 1, 2 or 3, characterized in that: A supporting groove is arranged at the bottom end of the first prism carrier, a supporting protrusion is arranged on the second prism carrier, a nodding ball is arranged at the top end of the supporting protrusion, the supporting protrusion cooperates with the supporting groove, and the nodding ball abuts against the top groove wall of the supporting groove.

5. The lens driving device according to claim 4, characterized in that: Two nodding balls are arranged at the top end of the second prism carrier along the second direction.

6. The lens driving device according to claim 1, wherein: The prism driving mechanism includes a nodding coil arranged on the rear side of the base, a shaking head coil arranged on the bottom end of the base, a nodding magnet arranged on the rear side of the first prism carrier, and a shaking head magnet arranged on the bottom end of the second prism carrier. The nodding coil is arranged opposite to the nodding magnet, and the shaking head coil is arranged opposite to the shaking head magnet.

7. The lens driving device according to claim 6, wherein: A first prism carrier built-in metal is disposed in the first prism carrier, the first prism carrier built-in metal has a rear side surface, and the rear side surface of the first prism carrier built-in metal is disposed opposite to the nodding magnet and is attracted to each other; And / or, a second prism carrier built-in metal is disposed in the second prism carrier, and the bottom end of the second prism carrier built-in metal is disposed opposite to the shaking magnet and is attracted to each other; And / or, a bottom adsorption iron sheet is arranged in the base, the bottom adsorption iron sheet is located below the shaking head coil, and the bottom adsorption iron sheet and the shaking head magnet are arranged opposite to each other and adsorbed to each other.

8. The lens driving device according to claim 1, wherein: The first prism carrier is provided with a first prism carrier built-in metal, and the first prism carrier adsorption metal is provided at the middle bottom end of the first prism carrier built-in metal; the second prism carrier is provided with a second prism carrier built-in metal, and the middle top end of the second prism carrier built-in metal is provided with an adsorption magnet mounting part; the second prism carrier is provided with a first prism carrier adsorption magnet, and the first prism carrier adsorption magnet is respectively arranged opposite to the first prism carrier adsorption metal and adsorbed to each other, and arranged opposite to the adsorption magnet mounting part and adsorbed to each other.

9. The lens driving device according to claim 1, wherein: The zoom driving mechanism comprises a zoom coil arranged on the inner side wall of the base and a zoom magnet arranged on the side wall of the lens carrier, wherein the zoom coil and the zoom magnet are arranged opposite to each other; And / or, a cover plate for fixing the lens is detachably provided on the top of the lens carrier; And / or, the lens carrier is provided with anti-collision parts at both the front and rear ends; And / or, a lens ball groove is provided between the bottom end of the lens carrier and the inner bottom end of the base, and a lens ball is rollingly connected in the lens ball groove; And / or, a lens carrier adsorption magnet is arranged at the bottom end of the lens carrier, a base built-in metal is arranged in the base, the base built-in metal and the lens carrier adsorption magnet are arranged opposite to each other and adsorbed to each other; a lens carrier built-in metal is arranged in the lens carrier, and the bottom end of the lens carrier built-in metal and the lens carrier adsorption magnet are arranged opposite to each other and adsorbed to each other.

10. The lens driving device according to claim 9, wherein: A lens carrier built-in metal is arranged in the lens carrier, and the lens carrier built-in metal has a side surface. The side surface of the lens carrier built-in metal is arranged opposite to the zoom magnet and is attracted to each other.

Images