Adjustment mechanism and imaging device

Abstract

An adjustment mechanism and an imaging device. The adjustment mechanism comprises an adjustment assembly, a driving assembly and an elastic assembly. The adjustment assembly comprises a fixed part, a rotating part and a movable part, wherein the rotating part can rotate relative to the fixed part in a direction around an optical axis of a lens assembly; the movable part can move relative to the fixed part in the direction of the optical axis; the movable part and / or the rotating part are / is provided with a transmission structure; and the transmission structure acts on the movable part and / or the rotating part along with the rotation of the rotating part, such that the movable part moves relative to the fixed part in the direction of the optical axis. The driving assembly is connected to the rotating part, and is used for driving the rotating part to rotate relative to the fixed part. The elastic assembly is connected to the fixed part, and is used for providing an elastic preload applied to the movable part and facing the rotating part, such that the movable part and / or the rotating part keep(s) abutting against the transmission structure in the direction of the optical axis.

Description

Adjusting mechanism and imaging device TECHNICAL FIELD

[0001] The present application relates to the field of photography, and in particular to an adjusting mechanism and an imaging device. BACKGROUND

[0002] In the prior art, in order to capture a clear image, the lens assembly and the image sensor of the imaging device need to be relatively moved in the direction of the optical axis for focusing. When the imaging device is used in a scene of large or rapid motion, such as in a scene of extreme sports, the lens assembly and the image sensor will bear a large acceleration, and are prone to shaking, which causes unnecessary relative movement between the lens assembly and the image sensor and breathing effect, thereby affecting the imaging quality. SUMMARY

[0003] In view of the above, the present application provides an adjusting mechanism and an imaging device.

[0004] The adjusting mechanism according to the first aspect of the present application is used to adjust the relative position between the lens assembly and the image sensor, and comprises:

[0005] an adjusting assembly, the adjusting assembly comprises a fixed component, a rotating component and a movable component, one of the lens assembly and the image sensor is arranged on the fixed component, the other of the lens assembly and the image sensor is arranged on the movable component, the rotating component is rotatable relative to the fixed component in the direction of the optical axis around the lens assembly, the movable component is movable relative to the fixed component in the direction of the optical axis, the movable component and / or the rotating component is provided with a transmission structure, the transmission structure is configured to act on the movable component and / or the rotating component with the rotation of the rotating component, so that the movable component moves relative to the fixed component in the direction of the optical axis;

[0006] a driving assembly, the driving assembly is connected with the rotating component, and the driving assembly is used to drive the rotating component to rotate relative to the fixed component, so as to drive the movable component to reciprocate in the direction of the optical axis; and

[0007] an elastic assembly, the elastic assembly is connected with the fixed component, and the elastic assembly is used to provide an elastic pre-tightening force applied to the movable component and towards the rotating component, in the case that the distance between the movable component and the fixed component in the direction of the optical axis is the smallest, the elastic assembly still deforms elastically to generate an elastic pre-tightening force for keeping the movable component and / or the rotating component in abutment with the transmission structure in the direction of the optical axis.

[0008] The imaging device according to the second aspect of the present application comprises:

[0009] a lens assembly;

[0010] an image sensor; and

[0011] the adjusting mechanism described above;

[0012] wherein one of the lens assembly and the image sensor is arranged on the fixed component, and the other of the lens assembly and the image sensor is arranged on the movable component.

[0013] As can be seen from the technical solution described above, the adjusting mechanism according to the first aspect of the present application applies an elastic pre-tightening force towards the rotating component to the movable component through the elastic assembly. In the case that the distance between the movable component and the fixed component along the optical axis is the smallest, the elastic pre-tightening force can also make the movable component and / or the rotating component keep abutting against the transmission structure in the optical axis direction, that is, the relative position between the movable component and the rotating component remains unchanged. In this way, the adjusting mechanism can have better impact resistance. Even in the scene of large or rapid movement, the elastic assembly can prevent the movable component from unnecessary movement in the optical axis direction, thereby reducing the problem of unnecessary relative movement between the lens assembly and the image sensor in the optical axis direction, such as breathing effect, to improve the imaging quality. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained without creative labor.

[0015] FIG. 1 is a structural schematic diagram of an imaging device according to an embodiment of the present application;

[0016] FIG. 2 is a sectional view of A-A in FIG. 1;

[0017] FIG. 3 is an exploded schematic diagram of the imaging device shown in FIG. 1;

[0018] FIG. 4 is a partial structural schematic diagram of the imaging device shown in FIG. 1;

[0019] FIG. 5 is a structural schematic diagram of the main body and the supporting arm of the imaging device shown in FIG. 1;

[0020] FIG. 6 is a structural schematic diagram of the movable component of the imaging device shown in FIG. 1;

[0021] FIG. 7 is a structural schematic diagram of the rotating component of the imaging device shown in FIG. 1;

[0022] Fig. 8 is a structural schematic diagram of an imaging device according to another embodiment of the present application;

[0023] Fig. 9 is a sectional schematic diagram of the imaging device shown in Fig. 8;

[0024] Fig. 10 is an exploded schematic diagram of the imaging device shown in Fig. 8;

[0025] Fig. 11 is a structural schematic diagram of a part of a fixed component of the imaging device shown in Fig. 8;

[0026] Fig. 12 is a partial structural schematic diagram of the imaging device shown in Fig. 8;

[0027] Fig. 13 is a structural schematic diagram of a rotating component of the imaging device shown in Fig. 8;

[0028] Fig. 14 is a partial structural schematic diagram of the imaging device shown in Fig. 8;

[0029] Fig. 15 is a partial structural schematic diagram of the imaging device shown in Fig. 8;

[0030] Fig. 16 is a structural schematic diagram of the imaging device shown in Fig. 8 from another perspective;

[0031] Fig. 17 is a sectional schematic diagram of B-B in Fig. 16;

[0032] Fig. 18 is a partial enlarged schematic diagram of W in Fig. 17;

[0033] Fig. 19 is a sectional schematic diagram of an imaging device according to another embodiment of the present application;

[0034] Fig. 20 is a sectional schematic diagram of an imaging device according to another embodiment of the present application. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0036] As shown in Figs. 1 to 4, 8 to 10 and 19, the embodiments of the present application propose an adjusting mechanism for adjusting the relative position between the lens assembly 200 and the image sensor 300 to achieve the focusing between the lens assembly 200 and the image sensor 300.

[0037] The proposed adjusting mechanism includes an adjusting assembly 10, a driving assembly 20, and an elastic assembly 30. The adjusting assembly 10 includes a fixed component 11, a rotating component 12, and a movable component 13, the lens assembly 200 is arranged on the fixed component 11, the image sensor 300 is arranged on the movable component 13, the rotating component 12 can rotate relative to the fixed component 11 in the direction of the optical axis L around the lens assembly 200, the movable component 13 can move relative to the fixed component 11 in the direction of the optical axis L, the movable component 13 and / or the rotating component 12 is provided with a transmission structure 14, the transmission structure 14 is configured to act on the movable component 13 and / or the rotating component 12 with the rotation of the rotating component 12, so that the movable component 13 moves relative to the fixed component 11 in the direction of the optical axis L. The driving assembly 20 is connected with the rotating component 12, and the driving assembly 20 is used to drive the rotating component 12 to rotate relative to the fixed component 11, so as to drive the movable component 13 to reciprocate in the direction of the optical axis L. The elastic assembly 30 is connected with the fixed component 11, and the elastic assembly 30 is used to provide an elastic pre-tightening force applied to the movable component 13 and towards the rotating component 12. In the case that the distance between the movable component 13 and the fixed component 11 in the direction of the optical axis L is the smallest, the elastic assembly 30 still deforms elastically to generate an elastic pre-tightening force for keeping the movable component 13 and / or the rotating component 12 in abutment with the transmission structure 14 in the direction of the optical axis L.

[0038] Among them, “the movable component 13 and / or the rotating component 12 is provided with the transmission structure 14” includes three cases: the first case is that the transmission structure 14 includes two parts, one part is arranged on the movable component 13, and the other part is arranged on the rotating component 12, which will be described in detail in the embodiments below. The second case is that the transmission structure 14 is only arranged on the movable component 13, for example, the transmission structure 14 is a slope arranged on the movable component 13, and the rotating component 12 abuts against the slope. In the process of rotating the rotating component 12, the movable component 13 is driven to move in the direction of the optical axis L through the slope. The third case is that the transmission structure 14 is only arranged on the rotating component 12, for example, the transmission structure 14 is a slope arranged on the rotating component 12, and the movable component 13 abuts against the slope. In the process of rotating the rotating component 12, the movable component 13 is driven to move in the direction of the optical axis L through the slope.

[0039] It should be noted that the positions of the lens assembly 200 and the image sensor 300 are not limited to that the lens assembly 200 is arranged on the fixed component 11 and the image sensor 300 is arranged on the movable component 13. For example, in some other embodiments, the lens assembly 200 is arranged on the movable component 13 and the image sensor 300 is arranged on the fixed component 11, which is also possible, as long as the adjusting mechanism can adjust the relative positions of the lens assembly 200 and the image sensor 300.

[0040] The adjusting mechanism provided by the embodiments of the present application can apply an elastic pre-tightening force to the movable component 13 towards the rotating component 12 through the elastic component 30. In the case that the distance between the movable component 13 and the fixed component 11 along the optical axis L is the smallest, the movable component 13 and / or the rotating component 12 can also be kept in abutment with the transmission structure 14 along the optical axis L, that is, the relative position between the movable component 13 and the rotating component 12 remains unchanged. In this way, the adjusting mechanism can have better impact resistance. Even in the case of large or rapid movement, the elastic component 30 can prevent the movable component 13 from unnecessary movement along the optical axis L, thereby reducing the unnecessary relative movement between the lens assembly 200 and the image sensor 300 along the optical axis L and the breathing effect and other problems, so as to improve the imaging quality.

[0041] As shown in FIG. 19, in some embodiments, the elastic component 30 includes a main body 31 and one or more arms 32. At least two arms 32 are arranged on the two sides of the main body 31, respectively. In the case that the two arms 32 are fixedly connected with the fixed component 11, the two arms 32 are bent along the optical axis L, so that the main body 31 applies a pre-tightening force along the optical axis L to the image sensor 300.

[0042] As shown in FIGS. 4 and 5, in some embodiments, the elastic component 30 includes a main body 31 and one or more arms 32. The main body 31 and the one or more arms 32 are connected with the fixed component 11, and cooperate to provide an elastic pre-tightening force along the optical axis L. It should be understood that the elastic pre-tightening force can be a force that is always generated when the elastic component 30 is elastically deformed along the optical axis L. In this embodiment, through the action of the elastic pre-tightening force of the elastic component 30, the unnecessary relative movement between the lens assembly 200 and the image sensor 300 along the optical axis L can be reduced, and the imaging quality can be improved.

[0043] As shown in FIGS. 4 and 5, in some embodiments, the main body 31 and the one or more arms 32 can be integrally formed. The main body 31 and the one or more arms 32 can be made of a metal material, so as to have a certain elasticity and maintain good strength. Specifically, the main body 31 and the one or more arms 32 can be a metal plate spring, and further be a single-layer metal plate spring. Of course, the main body 31 and the arms 32 are not limited to being made of a metal material, but can also be made of a plastic or rubber material having elasticity, which can be determined according to actual design needs.

[0044] In some embodiments, the main body 31 and the arms 32 are integrally machined from a sheet. For example, the main body 31 and the arms 32 are integrally stamped or laser cut or etched from a sheet of metal. In this implementation, the main body 31 and the arms 32 have high connection strength, can prolong the service life, and are convenient to manufacture. Of course, the main body 31 and the arms 32 are not limited to being integrally formed, and in other embodiments, the main body 31 and the arms 32 can be separately formed and then assembled together by mechanical coupling. It should be noted that the main body 31 and the arms 32 can be made of the same material or different materials, which can be determined according to actual design needs.

[0045] In some embodiments, the elastic assembly 30 includes a main body 31 and a plurality of arms 32, the plurality of arms 32 are arranged at intervals around the main body 31, and the plurality of arms 32 are rotationally symmetrically arranged around the midpoint of the main body 31. Wherein, the "rotationally symmetrically arranged" means that one of any two adjacent arms 32 coincides with the other arm 32 after rotating a first angle around the midpoint of the main body 31. For example, in an embodiment, the elastic assembly 30 includes four arms 32, the four arms 32 are equally spaced around the midpoint of the main body 31, and one of any two adjacent arms 32 coincides with the other arm 32 after rotating 90 degrees around the midpoint of the main body 31. In this implementation, the main body 31 is balanced, and the main body 31 can be prevented from rotating around the optical axis L when moving along the optical axis L due to uneven force.

[0046] As shown in FIGS. 4 and 5, in some embodiments, the elastic assembly 30 includes a main body 31 and four arms 32, the four arms 32 are respectively a first arm 32a, a second arm 32b, a third arm 32c, and a fourth arm 32d, the first arm 32a and the second arm 32b are symmetrically arranged relative to a first plane S1, the third arm 32c and the fourth arm 32d are symmetrically arranged relative to the first plane S1, the first arm 32a and the fourth arm 32d are symmetrically arranged relative to a second plane S2, the second arm 32b and the third arm 32c are symmetrically arranged relative to the second plane S2, the first plane S1 and the second plane S2 are parallel to the optical axis L, and the first plane S1 and the second plane S2 are perpendicular to each other. In this implementation, the main body 31 is also balanced, and the main body 31 can be prevented from rotating around the optical axis L when moving along the optical axis L due to uneven force.

[0047] As shown in FIG. 5, in some embodiments, each of the arms 32 includes a first end C and a second end D, the first end C of the arm 32 is connected to the main body 31, the second end D of the arm 32 is connected to the fixed component 11, and the arm 32 is curved towards the rotating component 12 from the first end C to the second end D so as to cause the main body 31 to generate the elastic pre-tightening force applied to the movable component 13, and the arm 32 is still curved towards the rotating component 12 in the case that the distance between the movable component 13 and the rotating component 12 along the optical axis L is the smallest.

[0048] Before assembly, the main body 31 and the arms 32 are in the same plane as a whole and are in the form of a sheet, and in the assembly process, the second end D of the arm 32 is curved towards the rotating component 12 and connected to the fixed component 11, and the elastic force generated by the bending of the arm 32 pulls the main body 31 towards the movable component 13, so that the main body 31 generates the elastic pre-tightening force applied to the movable component 13.

[0049] As shown in FIGS. 3-5 and 10-12, in some embodiments, the fixed component 11 is a ring-shaped member, which encloses to form a first through hole H1, an inner side wall of the first through hole H1 is provided with a step E, the step E is provided with a mounting column F, the second end D of the arm 32 is provided with a mounting hole G, and the second end D of the arm 32 is connected to the fixed component 11 by being arranged in the mounting hole G through the mounting column F.

[0050] As shown in FIG. 5, in some embodiments, the width of the arm 32 is greater than the thickness of the arm 32. With this implementation, the arm 32 can have greater rigidity in the direction perpendicular to the optical axis L, so as to form a better buffering effect in the direction perpendicular to the optical axis L.

[0051] As shown in FIGS. 4 and 5, in some embodiments, one or more arms 32 are configured to provide an elastic buffering force in the direction perpendicular to the optical axis L. It should be understood that the elastic buffering force can be a force generated after the one or more arms 32 are elastically deformed by a force in the direction perpendicular to the optical axis L. With this implementation, the unnecessary relative movement between the lens assembly 200 and the image sensor 300 in the direction perpendicular to the optical axis L can be reduced by the elastic buffering force of the elastic assembly 30, and the imaging quality is improved.

[0052] As shown in FIG. 5, in some embodiments, one or more arms 32 include a bending portion 321, which can be elastically deformed by an external force in the direction perpendicular to the optical axis L to provide an elastic buffering force in the direction perpendicular to the optical axis L.

[0053] As shown in FIG. 5, in some embodiments, a first gap M1 is formed between the bending portion 321 and the main body portion 31, and the first gap M1 provides a space for elastic deformation of the support arm 32 when the support arm 32 is subjected to an external force perpendicular to the optical axis L.

[0054] As shown in FIG. 5, in some embodiments, a second gap M2 is formed between the two ends of the bending portion 321, and the second gap M2 provides a space for elastic deformation of the support arm 32 when the support arm 32 is subjected to an external force perpendicular to the optical axis L.

[0055] As shown in FIG. 5, in some embodiments, the bending portion 321 includes a first extension portion 3211, a second extension portion 3212, and a third extension portion 3213, the first extension portion 3211 is arranged apart from the main body portion 31, the second extension portion 3212 is arranged apart from the first extension portion 3211, the third extension portion 3213 connects the first extension portion 3211 and the second extension portion 3212, the first end C is connected to one end of the first extension portion 3211 away from the third extension portion 3213, the second end D is connected to one end of the second extension portion 3212 away from the third extension portion 3213, the first gap M1 is formed between the first extension portion 3211 and the main body portion 31, and the second gap M2 is formed between the second extension portion 3212 and the first extension portion 3211.

[0056] As shown in FIG. 5, in some embodiments, the main body portion 31 includes a first edge 311 and a second edge 312 opposite to the first edge 311 in a first direction X perpendicular to the optical axis L, the first extension portion 3211 is parallel to the first edge 311, the second extension portion 3212 is parallel to the first extension portion 3211, and the third extension portion 3213 is perpendicular to the first edge 311.

[0057] As shown in FIG. 5, in some embodiments, the bending portion 321 further includes an arc-shaped portion 3214 connected between the first extension portion 3211 and the first end C.

[0058] As shown in FIGS. 2, 3, 9, 10, 19, and 20, in some embodiments, the image sensor 300 is fixedly connected to the movable component 13 to follow the movement of the movable component 13 along the optical axis L direction driven by the driving assembly 20.

[0059] As shown in FIGS. 2, 3, 9, 10, 19, and 20, in some embodiments, the image sensor 300 is arranged between the elastic assembly 30 and the movable component 13, and the elastic assembly 30 applies an elastic pre-tightening force along the optical axis L direction to the movable component 13 through the image sensor 300.

[0060] It should be understood that the lens assembly 200 can be connected with the fixed component 11, and the specific setting position thereof can be set according to actual needs. As shown in FIG. 19, the image sensor 300, the transmission structure 14 and the lens assembly 200 can be sequentially arranged along the optical axis L direction. In this way, the lens can be arranged at the position of the middle part of the rotating component 12. The lens assembly 200 and the rotating component 12 overlap in the optical axis direction, so as to reduce the length of the overall device. Of course, as shown in FIG. 20, the lens assembly 200, the image sensor 300 and the transmission structure 14 can also be sequentially arranged along the optical axis L direction.

[0061] It should be noted that the "image sensor 300 is arranged between the elastic assembly 30 and the movable component 13" can be that the image sensor 300, the elastic assembly 30 and the movable component 13 do not have any overlapping part in the direction perpendicular to the optical axis L. It can also be that the image sensor 300, the elastic assembly 30 and the movable component 13 can have partial overlap in the direction perpendicular to the optical axis L.

[0062] It should be noted that the elastic assembly 30 applies the elastic pre-tightening force in the optical axis L direction to the movable component 13 through the image sensor 300, which can be directly applying the elastic pre-tightening force in the optical axis L direction to the movable component 13 through the image sensor 300, or indirectly applying the elastic pre-tightening force in the optical axis L direction to the movable component 13 through the image sensor 300, which can be determined according to actual design needs.

[0063] It should be further noted that since the image sensor 300 is generally lighter in weight compared with the lens assembly 200, in the present embodiment, the power required to be output by the driving assembly 20 for driving the rotating component 12 to rotate to drive the movable component 13 to reciprocate along the optical axis L direction is smaller by arranging the image sensor 300 to be connected with the movable component 13. Therefore, the parameter requirement of the driving assembly 20 can be reduced, so that a smaller size driving assembly 20 can be used to meet the miniaturization requirement, and the cost can be reduced at the same time.

[0064] As shown in FIG. 2, FIG. 3, FIG. 9, FIG. 10 and FIG. 19, in some embodiments, the image sensor 300 comprises a circuit board 310 and a sensor 320, the circuit board 310 is arranged between the elastic assembly 30 and the movable component 13, the elastic assembly 30, the circuit board 310, the movable component 13, the lens assembly 200 are sequentially arranged along the optical axis L, the circuit board 310 is fixedly connected with the movable component 13 to follow the movable component 13 to move along the optical axis L driven by the driving assembly 20, the sensor 320 is arranged on the side of the circuit board 310 facing the movable component 13 and is arranged opposite to the lens assembly 200. The elastic assembly 30 applies the elastic pre-tightening force along the optical axis L to the movable component 13 through the circuit board 310. Optionally, the movable component 13 is a ring-shaped component, and the sensor 320 is embedded in the movable component 13.

[0065] In the above-mentioned embodiments, the sensor 320 is arranged on the side of the circuit board 310 facing the movable component 13. It should be noted that the present application is not limited to this embodiment. For example, in other embodiments, as shown in FIG. 20, the lens assembly 200, the elastic assembly 30, the circuit board 310 and the movable component 13 are sequentially arranged along the optical axis L, and the sensor 320 is arranged on the side of the circuit board 310 facing the elastic assembly 30 and is arranged opposite to the lens assembly 200. The specific arrangement can be determined according to the actual design needs.

[0066] As shown in FIG. 9 and FIG. 10, in some embodiments, the adjusting assembly 10 can further comprise a connecting part 15, the connecting part 15 is arranged between the image sensor 300 and the main body part 31, and the connecting part 15 is connected with the image sensor 300 and the main body part 31 respectively, the main body part 31, the connecting part 15 and the image sensor 300 are sequentially arranged along the optical axis L, so that the two supporting arms 32 are bent along the optical axis L when the connecting and fixing part 11 and the main body part 31 are connected. With this embodiment, the radial size of the adjusting mechanism can be reduced, the radial size refers to the size perpendicular to the optical axis L. It can be understood that, referring to FIG. 9, the connecting part 15 is arranged to increase the axial distance between the image sensor 300 and the elastic assembly 30, so that the elastic assembly 30 can produce elastic deformation along the optical axis L through the connecting part 15.

[0067] In some embodiments, the connecting part 15 is an adhesive part, and the main body part 31 and the image sensor 300 are adhesively fixed through the connecting part 15. Of course, the main body part 31 and the image sensor 300 are not limited to be adhesively fixed through the connecting part 15. For example, in other embodiments, the main body part 31 and the image sensor 300 can also be connected and fixed by using fasteners.

[0068] As shown in FIG. 9 and FIG. 10, in some embodiments, the connecting portion 15 is connected with the circuit board 310 and the main body portion 31 respectively, and the main body portion 31, the connecting portion 15 and the circuit board 310 are sequentially arranged along the optical axis L.

[0069] As shown in FIG. 2 and FIG. 3, FIG. 9 and FIG. 10, in some embodiments, the elastic assembly 30 comprises a heat-conducting portion 33, which is used to transfer the heat generated by the image sensor 300 while providing the elastic pre-tightening force. In this implementation, the heat-conducting portion 33 can also provide the elastic pre-tightening force, which can further improve the anti-vibration effect of the adjusting mechanism, and in addition, the heat-conducting portion 33 can timely dissipate the heat generated by the image sensor 300 during operation, so as to avoid the influence of the heat on the imaging quality. It can be understood that when the temperature of the image sensor 300 decreases, the noise caused by the heat decreases, and the imaging quality is correspondingly improved.

[0070] The heat-conducting portion 33 can be made of silica gel added with high-thermal-conductivity fibers, but is not limited thereto. It should be noted that when the heat-conducting portion 33 is not used to provide the elastic pre-tightening force, the heat-conducting portion 33 can be made of a graphite sheet to achieve the heat-conducting effect.

[0071] As shown in FIG. 2 and FIG. 3, FIG. 9 and FIG. 10, in some embodiments, the main body portion 31 is in heat-conducting contact with the image sensor 300, and the heat-conducting portion 33 is arranged on the side of the main body portion 31 opposite to the image sensor 300 and is in heat-conducting contact with the main body portion 31, and the heat generated by the image sensor 300 during operation is transferred to the heat-conducting portion 33 through the main body portion 31. For example, the heat-conducting contact between the main body portion 31 and the image sensor 300 can be direct contact for heat conduction, or other heat-conducting members can be arranged between the main body portion 31 and the image sensor 300 for indirect heat conduction.

[0072] As shown in FIG. 9 and FIG. 10, in some embodiments, the adjusting mechanism further comprises a heat-dissipating member 40, and the side of the heat-conducting portion 33 opposite to the main body portion 31 abuts against the heat-dissipating member 40, and the heat transferred from the image sensor 300 to the heat-conducting portion 33 is dissipated from the heat-dissipating member 40. The heat-dissipating member 40 can be a metal member, such as a copper member or an aluminum member or a copper alloy member or an aluminum alloy member, but is not limited thereto.

[0073] In some embodiments, the heat-conducting portion 33 is made of an elastic material, and the heat-dissipating member 40 and the main body portion 31 pre-press the heat-conducting portion 33 during installation, so that the heat-conducting portion 33 is deformed to generate an elastic force, and the elastic force acts on the main body portion 31 to form the elastic pre-tightening force.

[0074] It should be noted that, through the above embodiment, it can be seen that the elastic assembly 30 includes the elastic sheet formed by the main body part 31 and the branch arm 32, and further includes the heat conduction part 33. However, it is not limited to this embodiment, for example, in some other embodiments, the elastic assembly 30 can only include the sheet-shaped part formed by the main body part 31 and the branch arm 32, or the elastic assembly 30 can only include the heat conduction part 33, which can be determined according to actual design needs.

[0075] It should be further noted that the main body part 31 and the branch arm 32 can also be used as the heat conduction part 33 at the same time.

[0076] As shown in FIGS. 2, 3, 6, and 7, in some embodiments, the transmission structure 14 includes a beveled part 141 and a matching part 142 matched with the beveled part 141, the beveled part 141 is arranged on the movable part 13, the matching part 142 is arranged on the rotating part 12, and the beveled part 141 and the matching part 142 are configured to relatively displace along the optical axis direction L during rotation of the rotating part 12.

[0077] As shown in FIGS. 2, 3, 6, and 7, in some embodiments, the beveled part 141 includes a first bevel 1411, the first bevel 1411 is arranged obliquely to the optical axis L direction, and the matching part 142 is matched with the first bevel 1411 to convert the rotation of the rotating part 12 into the translational movement of the movable part 13 along the optical axis L direction. Wherein, the matching of the matching part 142 with the first bevel 1411 can be direct contact matching or indirect contact matching, which can be determined according to actual design needs.

[0078] The rotating part 12 can rotate around the optical axis L in the second direction (for example, counterclockwise in FIG. 3) and the third direction under the driving of the driving assembly 20, and the second direction and the third direction are opposite directions. Taking the driving of the movable part 13 away from the fixed part 11 as an example when the rotating part 12 rotates in the second direction, when the rotating part 12 rotates in the second direction, the matching part 142 moves towards the first bevel 1411 and exerts a force on the first bevel 1411, the component of the force towards the elastic assembly 30 pushes the movable part 13 towards the elastic assembly 30, and the movable part 13 is away from the fixed part 11, that is, the image sensor 300 is away from the lens assembly 200. When the rotating part 12 rotates in the third direction, the matching part 142 moves away from the first bevel 1411, and the movable part 13 loses the pushing action of the rotating part 12, and moves towards the fixed part 11 under the action of the elastic pre-tightening force of the elastic assembly 30, that is, the image sensor 300 approaches the lens assembly 200.

[0079] As shown in FIG. 7, in some embodiments, the matching part 142 includes a second inclined surface 1421, which is arranged obliquely to the optical axis L, and the first inclined surface 1411 and the second inclined surface 1421 are arranged oppositely. The "opposite arrangement" includes that the second inclined surface 1421 is arranged opposite to the first inclined surface 1411, and also includes that the second inclined surface 1421 is arranged obliquely to the first inclined surface 1411, which is determined according to the relative position between the rotating part 12 and the movable part 13. For example, in the initial state, the second inclined surface 1421 is arranged opposite to the first inclined surface 1411, and when the rotating part 12 rotates relative to the movable part 13, the second inclined surface 1421 is arranged obliquely to the first inclined surface 1411.

[0080] In some embodiments, the second inclined surface 1421 is substantially parallel to the first inclined surface 1411. The substantially parallel includes that the first inclined surface 1411 is parallel to the second inclined surface 1421, or that the first inclined surface 1411 and the second inclined surface 1421 are relatively inclined at a small angle, for example, the first inclined surface 1411 and the second inclined surface 1421 form an included angle of 0° to 10°.

[0081] In the above embodiments, the inclined surface part 141 and the matching part 142 are matched by the inclined surface and the inclined surface. It should be noted that this is not limited to this embodiment. For example, in some other embodiments, the matching part 142 can be a convex column, which abuts against the first inclined surface 1411 of the inclined surface part 141.

[0082] As shown in FIG. 6 and FIG. 7, in some embodiments, the transmission structure 14 further includes a first rolling part 143, which is clamped between the inclined surface part 141 and the matching part 142, and can roll along the inclined surface part 141 and / or the matching part 142.

[0083] The first rolling part 143 can roll along the first inclined surface 1411 and / or the second inclined surface 1421 includes the following three cases: the first rolling part 143 can roll on the first inclined surface 1411 and can also roll on the second inclined surface 1421. The second case is that the first rolling part 143 can roll on the first inclined surface 1411, but cannot roll on the second inclined surface 1421, for example, the second inclined surface 1421 is provided with an embedding part, and the first rolling part 143 is rollably embedded in the embedding part. The third case is that the first rolling part 143 can roll on the second inclined surface 1421, but cannot roll on the first inclined surface 1411, for example, the first inclined surface 1411 is provided with an embedding part, and the first rolling part 143 is rollably embedded in the embedding part.

[0084] In this embodiment, by arranging the first rolling part 143 between the first slope 1411 and the second slope 1421, the friction between the rotating part 12 and the movable part 13 during relative movement can be reduced, and the movable part 13 can respond quickly when the rotating part 12 transmits movement to the movable part 13, so that the operation is smoother and the energy consumption is reduced.

[0085] In some embodiments, the first rolling part 143 is a ball. Of course, the first rolling part 143 is not limited to a ball, for example, in other embodiments, the first rolling part 143 can also be a roller, such as a cylinder, as long as it can achieve rolling fit between the rotating part 12 and the movable part 13.

[0086] As shown in FIGS. 6 and 7, in some embodiments, the transmission structure 14 further comprises a first rolling part 143, which is arranged between the first slope 1411 and the second slope 1421 and can roll along the first slope 1411 and / or the second slope 1421.

[0087] As shown in FIG. 6, in some embodiments, the transmission structure 14 further comprises a groove part 131, and the slope part 141 is arranged at the bottom of the groove part 131, and the groove part 131 is used to limit the rolling stroke of the first rolling part 143 along the slope part 141.

[0088] It should be noted that since the first rolling part 143 is arranged between the first slope 1411 and the second slope 1421, the first rolling part 143 is at least partially located in the groove part 131, which can reduce the size of the combination of the movable part 13, the first rolling part 143 and the rotating part 12 in the optical axis L direction, thereby reducing the size of the adjustment mechanism.

[0089] As shown in FIG. 6, in some embodiments, one end of the first slope 1411 extends to the end surface of the movable part 13 facing the rotating part 12, and in this embodiment, the side surface 133 of the first groove 131 has only one.

[0090] As shown in FIG. 7, in some embodiments, the side of the rotating part 12 facing the movable part 13 is formed with a protrusion 121, the protrusion 121 forms the matching part 142, and the surface of the protrusion 121 facing the movable part 13 is a second slope 1421.

[0091] As shown in FIGS. 6 and 7, in some embodiments, the number of inclined surfaces 141 and the number of matching surfaces 142 are both three, the three inclined surfaces 141 are arranged at intervals around the optical axis L on the movable part 13, and the three matching surfaces 142 are arranged at intervals around the optical axis L on the rotating part 12. Further, the three inclined surfaces 141 are arranged at equal intervals around the optical axis L on the movable part 13, and the three matching surfaces 142 are arranged at equal intervals around the optical axis L on the rotating part 12. It should be noted that the number of inclined surfaces 141 and the number of matching surfaces 142 are not limited to three, and can be four or more, which can be determined according to actual design needs.

[0092] It should be noted that the transmission structure 14 can also not be provided with the first rolling part 143, and the first inclined surface 1411 and the second inclined surface 1421 can directly abut each other.

[0093] In the above embodiments, the inclined surface 141 is arranged on the movable part 13, and the matching surface 142 is arranged on the rotating part 12. It should be noted that the positions of the inclined surface 141 and the matching surface 142 can be interchanged, that is, in other embodiments, as shown in FIGS. 14 and 15, the inclined surface 141 can be arranged on the rotating part 12, and the matching surface 142 can be arranged on the movable part 13.

[0094] It can be understood that since the inclined surface 141 can also be arranged on the rotating part 12, in other embodiments, the groove part 131 can be arranged on the side of the rotating part 12 facing the movable part 13.

[0095] For example, in some embodiments, as shown in FIGS. 13 to 18, the rotating part 12 includes a third end 12a and a fourth end 12b opposite to the third end 12a in the direction of the optical axis L, the third end 12a of the rotating part 12 faces the movable part 13, the end face of the third end 12a of the rotating part 12 is recessed to form a groove part 131 facing the fourth end 12b, the first inclined surface 1411 is the bottom surface 132 of the groove part 131, and the two side surfaces 133 of the groove part 131 in the direction around the optical axis L are used to limit the rolling stroke of the first rolling part 143 along the first inclined surface 1411.

[0096] In the above embodiments, the movable component 13 and the rotating component 12 are abutted in the direction of the optical axis L, one of the inclined surface portion 141 and the cooperating portion 142 is arranged on the side of the movable component 13 facing the rotating component 12, and the other of the inclined surface portion 141 and the cooperating portion 142 is arranged on the side of the rotating component 12 facing the movable component 13. It should be noted that the present application is not limited to this embodiment, for example, in some other embodiments, the movable component 13 can partially penetrate the rotating component 12, one of the inclined surface portion 141 and the cooperating portion 142 is arranged on the outer side wall of the movable component 13, and the other of the inclined surface portion 141 and the cooperating portion 142 is arranged on the inner side wall of the rotating component 12. Alternatively, in some other embodiments, the rotating component 12 can partially penetrate the movable component 13, one of the inclined surface portion 141 and the cooperating portion 142 is arranged on the inner side wall of the movable component 13, and the other of the inclined surface portion 141 and the cooperating portion 142 is arranged on the outer side wall of the rotating component 12.

[0097] It should be further noted that in the above embodiments, the inclined surface portion 141 and the cooperating portion 142 are arranged in the form of inclined surface cooperating with inclined surface, in the embodiments in which the movable component 13 partially penetrates the rotating component 12, an inclined groove inclined with respect to the optical axis L can be arranged on the outer side wall of the movable component 13, and a protruding portion can be arranged on the inner side wall of the rotating component 12, the protruding portion is embedded in the inclined groove, and when the rotating component 12 rotates, the protruding portion moves in the inclined groove to drive the movable component 13 to move along the direction of the optical axis L. Alternatively, in the embodiments in which the rotating component 12 partially penetrates the movable component 13, an inclined groove inclined with respect to the optical axis L can be arranged on the inner side wall of the movable component 13, and a protruding portion can be arranged on the outer side wall of the rotating component 12, the protruding portion is embedded in the inclined groove, and when the rotating component 12 rotates, the protruding portion moves in the inclined groove to drive the movable component 13 to move along the direction of the optical axis L.

[0098] As shown in FIGS. 3, 9, 19 and 20, in some embodiments, the movable component 13 and the rotating component 12 are arranged along the direction of the optical axis L, and the elastic assembly 30 is further configured to provide an elastic pre-tightening force applied to the rotating component 12 and towards the fixed component 11. Specifically, the elastic pre-tightening force generated by the elastic assembly 30 is transmitted to the rotating component 12 through the movable component 13, so that the rotating component 12 and the fixed component 11 also have an elastic pre-tightening force, and thus the relative positions of the rotating component 12 and the fixed component 11 along the direction of the optical axis L can remain unchanged. Thus, the relative positions of the movable component 13, the rotating component 12 and the fixed component 11 along the direction of the optical axis L remain unchanged, and thus the adjustment mechanism can have better impact resistance, even in the case of large or rapid movement, the unnecessary movement of the movable component 13 along the direction of the optical axis L can be prevented, thereby reducing the unnecessary relative movement between the lens assembly 200 and the image sensor 300 along the direction of the optical axis L, and the breathing effect and other problems, so as to improve the imaging quality.

[0099] As shown in FIG. 3, FIG. 9, FIG. 19 and FIG. 20, in some embodiments, the elastic assembly 30, the movable component 13 and the rotating component 12 are arranged in sequence along the optical axis L.

[0100] As shown in FIG. 9, FIG. 10, FIG. 17 and FIG. 18, in some embodiments, the adjusting assembly 10 further comprises a second rolling part 16, which is arranged between the rotating component 12 and the fixed component 11, and is used to realize the rolling fit between the rotating component 12 and the fixed component 11. With this implementation, the frictional force during the relative movement between the rotating component 12 and the fixed component 11 can be reduced, so that the rotating component 12 rotates more quickly, more smoothly and with lower energy consumption relative to the fixed component 11.

[0101] In some embodiments, the second rolling part 16 is a ball. Of course, the second rolling part 16 is not limited to be a ball, for example, in other embodiments, the second rolling part 16 can also be a roller, such as a cylinder, as long as it can realize the rolling fit between the rotating component 12 and the fixed component 11.

[0102] As shown in FIG. 10, FIG. 13 and FIG. 18, in some embodiments, the rotating component 12 comprises a third end 12a and a fourth end 12b opposite to the third end 12a in the direction of the optical axis L, the third end 12a of the rotating component 12 faces the movable component 13, the end face of the fourth end 12b of the rotating component 12 is recessed to form a second groove 122 towards the third end 12a, the fixed component 11 comprises an abutting part 111, the abutting part 111 is at least partially embedded in the second groove 122, and the second rolling part 16 is arranged between the abutting part 111 and the bottom surface of the second groove 122. With this implementation, the second rolling part 16 can utilize the axial dimension of the rotating component 12, which refers to the dimension in the direction of the optical axis L, without increasing the axial dimension to accommodate the second rolling part 16. Of course, in other embodiments, the second rolling part 16 can also be clamped between the end face of the rotating component 12 in the direction of the optical axis L and the fixed component 11, which can be determined according to actual design needs.

[0103] As shown in FIG. 18, in some embodiments, the side of the abutting part 111 facing the rotating component 12 is provided with a third groove 1111, the second rolling part 16 is partially embedded in the third groove 1111, and the third groove 1111 comprises two limit surfaces N1 arranged at intervals in the direction around the optical axis L, and the two limit surfaces N1 are used to limit the rolling stroke of the second rolling part 16 in the direction around the optical axis L.

[0104] As shown in FIG. 3 and FIG. 10, in some embodiments, the fixed component 11 is a ring-shaped member, which surrounds to form a first through hole H1, and the rotating component 12 and the movable component 13 are located in the first through hole H1.

[0105] As shown in FIG. 3, in some embodiments, the fixed component 11 is a one-piece component.

[0106] As shown in FIG. 10, in other embodiments, the fixed component 11 comprises a first structural member 112 and a second structural member 113, the first structural member 112 and the second structural member 113 are butted against each other in the direction of the optical axis L to form the fixed component 11.

[0107] As shown in FIGS. 3 and 10, in some embodiments, the side wall of the fixed component 11 is provided with a first assembly part 114, the side wall of the rotating component 12 is provided with a second assembly part 123, the driving assembly 20 comprises a coil 21 and a permanent magnet 22, the coil 21 is embedded in the first assembly part 114, the permanent magnet 22 is embedded in the second assembly part 123, the coil 21 is energized to drive the permanent magnet 22 to rotate around the direction of the optical axis L, thereby driving the rotating component 12 to rotate relative to the fixed component 11. In this embodiment, during the process of driving the rotating component 12 to rotate relative to the fixed component 11 by the driving assembly 20, there is no contact between the rotating component 12 and the fixed component 11 in the direction perpendicular to the optical axis L, which can avoid the problem of unstable movement and increased energy loss caused by friction when the rotating component 12 rotates relative to the fixed component 11.

[0108] As shown in FIGS. 3 and 10, in some embodiments, the number of the first assembly parts 114 and the number of the second assembly parts 123 are both three, the three first assembly parts 114 are arranged at intervals around the optical axis L on the fixed component 11, and the three second assembly parts 123 are arranged at intervals around the optical axis L on the rotating component 12. Further, the three first assembly parts 114 are arranged at equal intervals around the optical axis L on the fixed component 11, and the three second assembly parts 123 are arranged at equal intervals around the optical axis L on the rotating component 12. Correspondingly, the number of the coils 21 and the number of the permanent magnets 22 are both three, one coil 21 is embedded in each assembly part, and one permanent magnet 22 is embedded in each second assembly part 123.

[0109] Of course, the number of the first assembly parts 114 and the number of the second assembly parts 123 are not limited to three, for example, in other embodiments, the number of the first assembly parts 114 and the number of the second assembly parts 123 can also be one, two, four or more than four, which can be determined according to actual design needs.

[0110] It should be noted that the positions of the coil 21 and the permanent magnet 22 can be interchanged, that is, in other embodiments, the coil 21 can be embedded in the second assembly part 123, and the permanent magnet 22 can be embedded in the first assembly part 114.

[0111] It should be noted that the driving assembly 20 is not limited to the driving mode of the coil 21 and the permanent magnet. For example, in some other embodiments, the driving assembly 20 can also adopt the driving mode of a motor cooperating with a gear assembly, or the driving mode of a motor cooperating with a worm and gear pair, or the driving mode of a direct motor driving, which can be determined according to actual design needs.

[0112] As shown in FIG. 3 and FIG. 10, in some embodiments, the movable component 13 and the rotating component 12 are arranged along the optical axis L, the rotating component 12 is an annular member surrounding the second through hole H2, the movable component 13 is an annular member surrounding the third through hole H3, the second through hole H2 and the third through hole H3 are oppositely arranged, the sensor 320 of the image sensor 300 is oppositely arranged with the lens assembly 200, and the second through hole H2 and the third through hole H3 are used to form an avoiding channel, and the light passing through the lens assembly 200 is transmitted to the sensor 320 after passing through the second through hole H2 and the third through hole H3.

[0113] As shown in FIG. 9 and FIG. 10, in some embodiments, the adjusting assembly 10 further comprises a transparent member 17, which is connected with the movable component 13 and covers the third through hole H3. The transparent member 17 can be, but is not limited to, a glass member, which can play a protective role for the sensor 320.

[0114] The embodiment of the present application also proposes an imaging device, which comprises the lens assembly 200, the image sensor 300, and the adjusting mechanism described above, wherein one of the lens assembly 200 and the image sensor 300 is arranged on the fixed component 11, and the other of the lens assembly 200 and the image sensor 300 is arranged on the movable component 13.

[0115] The imaging device proposed has the advantage that the adjusting mechanism has better impact resistance, that is, even in a scene of large or rapid movement, the movable component 13 can be prevented from moving in the optical axis L direction unnecessarily, thereby reducing the problem of unnecessary relative movement between the lens assembly 200 and the image sensor 300 in the optical axis L direction and the breathing effect, so as to improve the imaging quality.

[0116] The structures, connection relationships, extension descriptions, and advantages of other components of the imaging device proposed in the embodiment can be referred to the above-mentioned embodiments, which will not be described here.

[0117] The embodiment of the present application also proposes a movable platform, which comprises the lens assembly 200, the image sensor 300, and the adjusting mechanism described above, wherein one of the lens assembly 200 and the image sensor 300 is arranged on the fixed component 11, and the other of the lens assembly 200 and the image sensor 300 is arranged on the movable component 13.

[0118] The proposed movable platform has the adjustment mechanism with better impact resistance due to the above-mentioned adjustment mechanism. Even in the case of large or rapid movement, the adjustment mechanism can prevent the unnecessary movement of the movable part 13 in the direction of the optical axis L, thereby reducing the unnecessary relative movement between the lens assembly 200 and the image sensor 300 in the direction of the optical axis L, and the breathing effect and other problems, so as to improve the imaging quality.

[0119] The embodiment of the present application provides an adjustment mechanism for adjusting the relative position between the lens assembly 200 and the image sensor 300, and the adjustment mechanism comprises:

[0120] The adjustment assembly comprises a fixed part 11, a rotating part 12 and a movable part 13. One of the lens assembly 200 and the image sensor 300 is arranged on the fixed part 11, and the other of the lens assembly 200 and the image sensor 300 is arranged on the movable part 13. The rotating part 12 can rotate relative to the fixed part 11 in the direction of the optical axis of the lens assembly 200. The movable part 13 can move relative to the fixed part 11 in the direction of the optical axis. The movable part 13 and / or the rotating part 12 is provided with a transmission structure 14. The transmission structure 14 is configured to act on the movable part 13 and / or the rotating part 12 with the rotation of the rotating part 12, so that the movable part 13 moves relative to the fixed part 11 in the direction of the optical axis. The driving assembly 20 is connected with the rotating part 12. The driving assembly 20 is used to drive the rotating part 12 to rotate relative to the fixed part 11, so as to drive the movable part 13 to reciprocate in the direction of the optical axis. The elastic assembly 30 is connected with the fixed part 11. The elastic assembly 30 is used to provide an elastic pre-tightening force applied to the movable part 13 and towards the rotating part 12. In the case that the distance between the movable part 13 and the fixed part 11 in the direction of the optical axis is minimum, the elastic assembly 30 still deforms elastically to generate the elastic pre-tightening force for keeping the movable part 13 and / or the rotating part 12 in abutment with the transmission structure 14 in the direction of the optical axis.

[0121] The elastic assembly 30 comprises a main body 31 and one or more arms 32, the one or more arms 32 are connected to the fixed component 11, and the main body 31 and the one or more arms 32 cooperate to provide the elastic pre-tightening force along the optical axis. Each arm 32 comprises a first end and a second end, the first end of the arm 32 is connected to the main body 31, and the second end of the arm 32 is connected to the fixed component 11, from the first end to the second end, the arm 32 is curved towards the rotating component 12, so that the main body 31 generates the elastic pre-tightening force applied to the movable component 13; and in the case that the distance between the movable component 13 and the rotating component 12 along the optical axis is the smallest, the arm 32 is still curved towards the rotating component 12. The one or more arms 32 can also be configured to provide the elastic buffering force perpendicular to the optical axis. The one or more arms 32 comprise a bending portion 321, the bending portion 321 can be elastically deformed due to the external force perpendicular to the optical axis, so as to provide the elastic buffering force perpendicular to the optical axis. The bending portion 321 forms a first gap M1 with the main body 31, and / or the two ends of the bending portion 321 form a second gap M2, the first gap M1 and / or the second gap M2 provide the elastic deformation space for the arm 32 in the case that the arm 32 is subjected to the external force perpendicular to the optical axis. The image sensor 300 is fixedly connected to the movable component 13, so as to follow the movement of the movable component 13 along the optical axis driven by the driving assembly 20.

[0122] The image sensor 300 is arranged between the elastic assembly 30 and the movable component 13, and the elastic assembly 30 applies an elastic pre-tightening force in the optical axis direction to the movable component 13 through the image sensor 300. At least two of the one or more supporting arms 32 are arranged on both sides of the main body 31, and in the case of fixing the two supporting arms 32 to the fixed component 11, the two supporting arms 32 are bent in the optical axis direction to apply a pre-tightening force in the optical axis direction to the image sensor 300 by the main body 31. The adjusting assembly further comprises a connecting portion arranged between the image sensor 300 and the main body 31, and the connecting portion is connected to the image sensor 300 and the main body 31, respectively. The main body 31, the connecting portion and the image sensor 300 are arranged in sequence along the optical axis, so that the two supporting arms 32 are bent in the optical axis direction when the fixed component 11 and the main body 31 are connected. The elastic assembly 30 comprises a heat-conducting portion 33 for transmitting heat generated by the image sensor 300 while providing an elastic pre-tightening force. The transmission structure 14 comprises a beveled portion 141 and a matching portion 142 matched with the beveled portion 141. The beveled portion 141 is arranged on one of the rotating component 12 and the movable component 13, and the matching portion 142 is arranged on the other one of the rotating component 12 and the movable component 13. The beveled portion 141 and the matching portion 142 are configured to relatively displace in the optical axis direction during rotation of the rotating component 12. The beveled portion 141 can comprise a first bevel 1411 inclined to the optical axis direction, and the matching portion 142 is matched with the first bevel 1411 to convert the rotation of the rotating component 12 into the translational movement of the movable component 13 in the optical axis direction. The matching portion 142 can further comprise a second bevel 1421 inclined to the optical axis direction, and the first bevel 1411 and the second bevel 1421 are arranged oppositely. The first bevel 1411 and the second bevel 1421 can be arranged in parallel. The transmission structure 14 can further comprise a first rolling portion 143 clamped between the beveled portion 141 and the matching portion 142 and capable of rolling along the beveled portion 141 and / or the matching portion 142. The transmission structure 14 can further comprise a first rolling portion 143 clamped between the first bevel 1411 and the second bevel 1421 and capable of rolling along the first bevel 1411 and / or the second bevel 1421. The transmission structure 14 can further comprise a groove portion 131, and the beveled portion 141 is arranged at the bottom of the groove portion 131. The groove portion 131 is used to limit the rolling stroke of the first rolling portion 143 along the beveled portion 141. The movable component 13 and the rotating component 12 can be arranged in the optical axis direction, and the elastic assembly 30 is further used to provide an elastic pre-tightening force applied to the rotating component 12 and towards the fixed component 11. The elastic assembly 30, the movable component 13 and the rotating component 12 can be arranged in sequence in the optical axis direction.The adjusting assembly can further include a second rolling part 16 arranged between the rotating part 12 and the fixed part 11, for realizing rolling fit between the rotating part 12 and the fixed part 11. In the case where the lens assembly 200 is connected with the fixed part 11, the image sensor 300, the transmission structure 14 and the lens assembly 200 are sequentially arranged along the optical axis. The lens assembly 200 and the rotating part 12 can overlap in the optical axis direction.

[0123] The structure, connection relationship, expansion description and beneficial effects of other components of the movable platform in the embodiment can be referred to the above-mentioned embodiments, and will not be described here.

[0124] The above merely illustrates the specific embodiments of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An adjustment mechanism, characterized by An adjusting mechanism for adjusting a relative position between a lens assembly and an image sensor, the adjusting mechanism comprising: an adjusting assembly comprising a fixed component, a rotating component and a movable component, one of the lens assembly and the image sensor being arranged on the fixed component, the other of the lens assembly and the image sensor being arranged on the movable component, the rotating component being rotatable relative to the fixed component in a direction around an optical axis of the lens assembly, the movable component being movable relative to the fixed component in a direction along the optical axis, the movable component and / or the rotating component being provided with a transmission structure configured to act on the movable component and / or the rotating component with rotation of the rotating component, so that the movable component moves relative to the fixed component in the direction along the optical axis; a driving assembly connected with the rotating component, the driving assembly being configured to drive the rotating component to rotate relative to the fixed component, so as to drive the movable component to move reciprocally in the direction along the optical axis; and an elastic assembly connected with the fixed component, the elastic assembly being configured to provide an elastic pre-tightening force applied to the movable component and towards the rotating component, the elastic assembly being elastically deformed to generate the elastic pre-tightening force for keeping the movable component and / or the rotating component in abutment with the transmission structure in the direction along the optical axis, even when a distance between the movable component and the fixed component in the direction along the optical axis is at a minimum.

2. The adjustment mechanism of claim 1, wherein, The elastic assembly comprises a main body and one or more arms, the one or more arms being connected with the fixed component, the main body and the one or more arms cooperating to provide the elastic pre-tightening force in the direction along the optical axis.

3. The adjustment mechanism of claim 2, wherein, Each of the arms comprises a first end and a second end, the first end of the arm being connected with the main body, the second end of the arm being connected with the fixed component, the arm being curved towards the rotating component from the first end to the second end, so that the main body generates the elastic pre-tightening force applied to the movable component; and the arm is still curved towards the rotating component even when the distance between the movable component and the rotating component in the direction along the optical axis is at a minimum.

4. Adjusting mechanism according to claim 1 or 2, characterized in that The elastic assembly comprises a main body and one or more arms, the one or more arms being configured to provide an elastic buffering force perpendicular to the direction along the optical axis.

5. The adjustment mechanism of claim 4, wherein, The one or more arms comprise a bending portion, the bending portion being elastically deformable due to an external force perpendicular to the direction along the optical axis, so as to provide the elastic buffering force perpendicular to the direction along the optical axis.

6. The adjustment mechanism of claim 5, wherein, A first gap is formed between the bending portion and the main body, and / or a second gap is formed between two ends of the bending portion, the first gap and / or the second gap providing an elastic deformation space for the arm when the arm is subjected to the external force perpendicular to the direction along the optical axis.

7. The adjustment mechanism of claim 1, wherein, The image sensor is fixedly connected with the movable component, so as to move along with the movable component driven by the driving assembly in the direction along the optical axis.

8. Adjusting mechanism according to claim 1 or 7, characterized in that The image sensor is arranged between the elastic assembly and the movable component, and the elastic assembly applies an elastic pre-tightening force along the optical axis direction to the movable component through the image sensor.

9. Adjusting mechanism according to claim 2 or 8, characterized in that At least two of the one or more supporting arms are arranged on two sides of the main body, and in the case that the two supporting arms are fixedly connected with the fixed component, the two supporting arms are bent along the optical axis direction so that the main body applies a pre-tightening force along the optical axis direction to the image sensor.

10. The adjustment mechanism of claim 9, wherein, The adjusting assembly further comprises a connecting portion arranged between the image sensor and the main body, and the connecting portion is connected with the image sensor and the main body respectively, and the main body, the connecting portion and the image sensor are arranged along the optical axis direction in sequence, so that the two supporting arms are bent along the optical axis direction when the fixed component and the main body are connected.

11. Adjusting mechanism according to any one of claims 1 to 10, characterized in that The elastic assembly comprises a heat-conducting portion for transferring heat generated by the image sensor while providing the elastic pre-tightening force.

12. Adjusting mechanism according to any one of claims 1 to 10, characterized in that The transmission structure comprises a bevel portion and a matching portion matched with the bevel portion, the bevel portion is arranged in one of the rotating component and the movable component, the matching portion is arranged in the other of the rotating component and the movable component, and the bevel portion and the matching portion are configured to relatively displace along the optical axis direction during rotation of the rotating component.

13. The adjustment mechanism of claim 12, wherein, The bevel portion comprises a first bevel inclined to the optical axis direction, and the matching portion is matched with the first bevel to convert rotation of the rotating component into translational movement of the movable component along the optical axis direction.

14. The adjustment mechanism of claim 13, wherein, The matching portion comprises a second bevel inclined to the optical axis direction, and the first bevel and the second bevel are arranged oppositely.

15. The adjustment mechanism of claim 14, wherein, The first bevel is arranged in parallel with the second bevel.

16. The adjustment mechanism of claim 12, wherein, The transmission structure further comprises a first rolling portion clamped between the bevel portion and the matching portion and capable of rolling along the bevel portion and / or the matching portion.

17. The adjustment mechanism of claim 14, wherein, The transmission structure further comprises a first rolling portion clamped between the first bevel and the second bevel and capable of rolling along the first bevel and / or the second bevel.

18. The adjustment mechanism of claim 16, wherein, The transmission structure further comprises a groove portion, the bevel portion is arranged at the bottom of the groove portion, and the groove portion is used to limit the rolling stroke of the first rolling portion along the bevel portion.

19. Adjusting mechanism according to any of claims 1 to 18, characterized in that The movable component and the rotating component are arranged along the optical axis direction, and the elastic assembly is further used to provide an elastic pre-tightening force applied to the rotating component and towards the fixed component.

20. The adjustment mechanism of claim 19, wherein, The elastic assembly, the movable component and the rotating component are arranged along the optical axis direction in sequence.

21. Adjusting mechanism according to any of claims 1 to 18, characterized in that The adjusting assembly further comprises a second rolling portion arranged between the rotating component and the fixed component and used to realize rolling fit between the rotating component and the fixed component.

22. The adjustment mechanism according to any one of claims 1 to 18, characterized in that In the case where the lens assembly is connected to the fixed member, the image sensor, the transmission structure, and the lens assembly are sequentially arranged in the direction of the optical axis.

23. The adjustment mechanism according to any one of claims 1 to 18, characterized in that The lens assembly and the rotating member overlap in the direction of the optical axis.

24. An imaging device, characterized by Comprising: a lens assembly; an image sensor; and the adjustment mechanism of any one of claims 1 to 23; wherein one of the lens assembly and the image sensor is arranged at the fixed member, and the other of the lens assembly and the image sensor is arranged at the movable member.

25. A movable platform, characterized by Comprising: a lens assembly; an image sensor; and the adjustment mechanism of any one of claims 1 to 23; wherein one of the lens assembly and the image sensor is arranged at the fixed member, and the other of the lens assembly and the image sensor is arranged at the movable member.

Images