Adjusting mechanism and imaging device

Abstract

The utility model discloses an adjusting mechanism and an imaging device, the adjusting mechanism comprises an adjusting assembly, a driving assembly and an elastic assembly, the adjusting assembly comprises a fixed part, a rotating part and a movable part, and the rotating part can rotate relative to the fixed part in the direction surrounding the 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 rotation of the rotating part so that the movable part can move relative to the fixed part in the direction of the optical axis. The driving assembly is connected with the rotating component and used for driving the rotating component to rotate relative to the fixed component. The elastic assembly is connected with the fixed part and used for providing elastic pre-tightening force which is applied to the movable part and faces the rotating part so that the movable part and / or the rotating part can abut against the transmission structure in the optical axis direction.

Description

Technical Field

[0001] The utility model relates to the technical field of shooting, in particular to an adjusting mechanism and an imaging device. Background Art

[0002] In the prior art, to capture clear images, the lens assembly and image sensor of an imaging device must frequently move relative to each other along the optical axis for focusing. When an imaging device is used in situations involving significant or rapid motion, such as extreme sports, the lens assembly and image sensor are subject to significant acceleration, which can easily cause them to shake. This can lead to unnecessary relative movement between the lens assembly and image sensor, resulting in problems such as the breathing effect, which can affect image quality. Utility Model Content

[0003] In view of this, the present invention proposes an adjustment mechanism and an imaging device.

[0004] The adjustment mechanism provided in the first aspect of the present invention is used to adjust the relative position between the lens assembly and the image sensor, and the adjustment mechanism includes:

[0005] an adjustment assembly, the adjustment assembly comprising a fixed component, a rotating component, and a movable component, wherein one of the lens assembly and the image sensor is disposed on the fixed component, and the other of the lens assembly and the image sensor is disposed 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, and the movable component being movable relative to the fixed component in a direction along the optical axis, and the movable component and / or the rotating component being provided with a transmission structure, the transmission structure being configured to act on the movable component and / or the rotating component as the rotating component rotates, so that the movable component moves relative to the fixed component along the optical axis;

[0006] a driving assembly connected to the rotating component, the driving assembly being configured to drive the rotating component to rotate relative to the fixed component, thereby driving the movable component to reciprocate along the optical axis; and

[0007] An elastic component is connected to the fixed component, and is used to provide an elastic preload force applied to the movable component and toward the rotating component. When the distance between the movable component and the fixed component along the optical axis is minimized, the elastic component still undergoes elastic deformation to generate an elastic preload force that keeps the movable component and / or the rotating component in contact with the transmission structure along the optical axis.

[0008] The imaging device provided in the second aspect of the present invention includes:

[0009] lens assembly;

[0010] image sensors; and

[0011] the aforementioned regulating mechanism;

[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] It can be seen from the above technical solution that the adjustment mechanism proposed in the first aspect of the present invention applies an elastic preload force to the movable part toward the rotating part by setting an elastic component. When the distance between the movable part and the fixed part along the optical axis is minimized, the elastic preload force can also enable the movable part and / or the rotating part to maintain contact with the transmission structure along the optical axis, that is, the relative position between the movable part and the rotating part remains unchanged. In this way, the adjustment mechanism can have better impact resistance. Even in scenarios of large or rapid movement, the elastic component can also prevent the movable part from moving unnecessarily in the optical axis direction, thereby reducing problems such as breathing effect caused by unnecessary relative movement between the lens assembly and the image sensor in the optical axis direction, thereby improving imaging quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained from these drawings without creative work.

[0015] Figure 1 This is a schematic structural diagram of an imaging device proposed in one embodiment of the present utility model;

[0016] Figure 2 yes Figure 1 Schematic cross-section of the middle AA;

[0017] Figure 3 yes Figure 1 An exploded schematic diagram of the imaging device shown;

[0018] Figure 4 yes Figure 1 A schematic diagram of a partial structure of the imaging device shown;

[0019] Figure 5 yes Figure 1 A schematic structural diagram of the main body and support arm of the imaging device shown;

[0020] Figure 6 yes Figure 1 A schematic structural diagram of the movable parts of the imaging device shown;

[0021] Figure 7 yes Figure 1 A schematic structural diagram of a rotating component of the imaging device shown;

[0022] Figure 8 It is a structural schematic diagram of an imaging device proposed in another embodiment of the present utility model;

[0023] Figure 9 yes Figure 8 A schematic cross-sectional view of the imaging device shown;

[0024] Figure 10 yes Figure 8 An exploded schematic diagram of the imaging device shown;

[0025] Figure 11 yes Figure 8 A schematic structural diagram of some fixed components of the imaging device shown;

[0026] Figure 12 yes Figure 8 A schematic diagram of a partial structure of the imaging device shown;

[0027] Figure 13 yes Figure 8 A schematic structural diagram of a rotating component of the imaging device shown;

[0028] Figure 14 yes Figure 8 A schematic diagram of a partial structure of the imaging device shown;

[0029] Figure 15 yes Figure 8 A schematic diagram of a partial structure of the imaging device shown;

[0030] Figure 16 yes Figure 8 A schematic structural diagram of the imaging device from another perspective;

[0031] Figure 17 yes Figure 16 Schematic cross-section of the middle BB;

[0032] Figure 18 yes Figure 17 A partial enlarged schematic diagram of point W in the middle. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, other embodiments obtained by ordinary technicians in this field without making creative efforts are all within the scope of protection of the present invention.

[0034] like Figures 1 to 4 、 Figures 8 to 10 As shown, an embodiment of the present invention provides an adjustment mechanism for adjusting the relative position between the lens assembly 200 and the image sensor 300 to achieve focus between the lens assembly 200 and the image sensor 300 .

[0035] The proposed adjustment mechanism includes an adjustment assembly 10, a drive assembly 20, and an elastic assembly 30. The adjustment assembly 10 includes a fixed component 11, a rotating component 12, and a movable component 13. The lens assembly 200 is disposed on the fixed component 11, and the image sensor 300 is disposed on the movable component 13. The rotating component 12 is rotatable relative to the fixed component 11 in a direction around the optical axis L of the lens assembly 200, and the movable component 13 is movable relative to the fixed component 11 along the optical axis L. The movable component 13 and / or the rotating component 12 are 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 as the rotating component 12 rotates, causing the movable component 13 to move relative to the fixed component 11 along the optical axis L. The drive assembly 20 is connected to the rotating component 12 and is used to drive the rotating component 12 to rotate relative to the fixed component 11, thereby driving the movable component 13 to reciprocate along the optical axis L. The elastic component 30 is connected to the fixed component 11. The elastic component 30 is used to provide an elastic preload force applied to the movable component 13 and toward the rotating component 12. When the distance between the movable component 13 and the fixed component 11 along the optical axis L is minimum, the elastic component 30 still undergoes elastic deformation to generate an elastic preload force that keeps the movable component 13 and / or the rotating component 12 in contact with the transmission structure 14 along the optical axis L.

[0036] Among them, "the movable part 13 and / or the rotating part 12 is provided with a transmission structure 14" includes three situations: the first situation is that the transmission structure 14 includes two parts, one part of which is provided on the movable part 13, and the other part is provided on the rotating part 12. This situation will be explained in detail in the embodiments below. Please refer to the embodiments below for details. The second situation is that the transmission structure 14 is only provided on the movable part 13. For example, the transmission structure 14 is an inclined surface provided on the movable part 13, and the rotating part 12 abuts against the inclined surface. During the rotation of the rotating part 12, the movable part 13 is driven to move along the optical axis L through the inclined surface. The third situation is that the transmission structure 14 is only provided on the rotating part 12. For example, the transmission structure 14 is an inclined surface provided on the rotating part 12, and the movable part 13 abuts against the inclined surface. During the rotation of the rotating part 12, the movable part 13 is driven to move along the optical axis L through the inclined surface.

[0037] It should be noted that the positions of the lens assembly 200 and the image sensor 300 are not limited to the lens assembly 200 being disposed on the fixed component 11 and the image sensor 300 being disposed on the movable component 13. For example, in other embodiments, the lens assembly 200 may be disposed on the movable component 13 and the image sensor 300 may be disposed on the fixed component 11, as long as the adjustment mechanism can adjust the relative position between the lens assembly 200 and the image sensor 300.

[0038] The adjustment mechanism proposed in the embodiment of the present invention applies an elastic preload force to the movable part 13 toward the rotating part 12 by setting an elastic component 30. When the distance between the movable part 13 and the fixed part 11 along the optical axis L is minimized, the elastic preload force can also enable the movable part 13 and / or the rotating part 12 to maintain contact with the transmission structure 14 along the optical axis L, that is, the relative position between the movable part 13 and the rotating part 12 remains unchanged. In this way, the adjustment mechanism can have better impact resistance. Even in the scenario of large or rapid movement, the elastic component 30 can prevent the movable part 13 from performing unnecessary movement in the direction of the optical axis L, thereby reducing the occurrence of 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, thereby improving imaging quality.

[0039] like Figure 4 and Figure 5As shown, in some embodiments, the elastic assembly 30 includes a main body 31 and one or more arms 32, one or more arms 32 being connected to the fixed component 11. The main body 31 and the plurality of arms 32 cooperate to provide an elastic preload force along the optical axis L, and the one or more arms 32 are configured to provide an elastic buffer force perpendicular to the optical axis L. It should be understood that the elastic preload force can be a force that is always generated when the elastic assembly 30 undergoes elastic deformation along the optical axis L, while the elastic buffer force can be a force generated after the one or more arms 32 undergo elastic deformation due to a force perpendicular to the optical axis L. In this embodiment, the elastic preload force and elastic buffer force of the elastic assembly 30 can simultaneously reduce unnecessary relative movement between the lens assembly 200 and the image sensor 300 along the optical axis L through the elastic preload force, and reduce unnecessary relative movement between the lens assembly 200 and the image sensor 300 along the optical axis L through the elastic buffer force, thereby improving imaging quality.

[0040] like Figure 4 and Figure 5 As shown, in some embodiments, the main body 31 and one or more arms 32 can be integrally formed. The main body 31 and one or more arms 32 can be made of a metal material to maintain good strength while having a certain degree of elasticity. Specifically, the main body 31 and one or more arms 32 can be metal leaf springs, furthermore, single-layer metal leaf springs. Of course, the main body 31 and arms 32 are not limited to being made of metal materials and can also be made of elastic materials such as plastic or rubber, depending on actual design requirements.

[0041] In some embodiments, the main body 31 and the support arm 32 are formed by an integrated sheet machine. For example, the main body 31 and the support arm 32 are formed by integrated stamping, laser cutting, or etching of metal sheets. In this embodiment, the connection strength between the main body 31 and the support arm 32 is high, which can extend the service life and is also convenient to process and manufacture. Of course, the main body 31 and the support arm 32 are not limited to being integrally formed. In some other embodiments, the main body 31 and the support arm 32 can be formed separately and independently, and then assembled together through mechanical coupling. It should be noted that the main body 31 and the support arm 32 can be made of the same material or different materials, which can be determined according to actual design needs.

[0042] In some embodiments, the elastic component 30 includes a main body 31 and a plurality of arms 32, the plurality of arms 32 being spaced apart around the main body 31, and the plurality of arms 32 being rotationally symmetrically arranged around the midpoint of the main body 31. The "rotationally symmetrical arrangement" refers to the situation where one of any two adjacent arms 32 is rotated around the midpoint of the main body 31 by a first angle and then coincides with the other of the two arms 32. For example, in one embodiment, the elastic component 30 includes four arms 32, the four arms 32 being equally spaced around the midpoint of the main body 31, and one of any two adjacent arms 32 is rotated 90 degrees around the midpoint of the main body 31 and then coincides with the other of the two arms 32. In this embodiment, the main body 31 is subjected to balanced forces, which can prevent the main body 31 from rotating around the optical axis L due to uneven forces when the main body 31 moves along the optical axis L.

[0043] like Figure 4 and Figure 5 As shown, in some embodiments, the elastic component 30 includes a main body 31 and four arms 32, the four arms 32 being 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 the second plane S2, and 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 embodiment, the main body 31 can also be subjected to balanced forces, and the main body 31 can be prevented from rotating about the optical axis L due to uneven forces when the main body 31 moves along the optical axis L.

[0044] like Figure 5 As shown, in some embodiments, each arm 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, and the second end D of the arm 32 is connected to the fixed part 11, and from the first end C to the second end D, the arm 32 is bent toward the rotating part 12, so that the main body 31 generates an elastic preload force applied to the movable part 13, and when the distance between the movable part 13 and the rotating part 12 along the optical axis L is minimized, the arm 32 is still bent toward the rotating part 12.

[0045] Before assembly, the main body 31 and the support arm 32 are sheet-like bodies that are integrally in the same plane. During the assembly process, the second end D of the support arm 32 is bent toward the rotating part 12 and connected to the fixed part 11. The elastic force generated by the bending of the support arm 32 pulls the main body 31 toward the movable part 13, thereby causing the main body 31 to generate an elastic preload force applied to the movable part 13.

[0046] like Figures 3 to 5 、 Figures 10 to 12 As shown, in some embodiments, the fixing component 11 is an annular member, which encloses a first through hole H1, and the inner wall of the first through hole H1 is provided with a step E, and a mounting column F is provided on the step E. The second end D of the support arm 32 is provided with a mounting hole G, and the second end D of the support arm 32 is connected to the fixing component 11 by the mounting column F passing through the mounting hole G.

[0047] like Figure 5 As shown, in some embodiments, the width of the support arm 32 is greater than the thickness of the support arm 32. In this embodiment, the support arm 32 can have greater rigidity in the direction perpendicular to the optical axis L, thereby forming a better buffering effect in the direction perpendicular to the optical axis L.

[0048] like Figure 5 As shown, in some embodiments, the support arm 32 includes a bending portion 321 , which can be elastically deformed due to an external force in a direction perpendicular to the optical axis L to provide an elastic buffering force in the direction perpendicular to the optical axis L.

[0049] like Figure 5 As shown, in some embodiments, a first gap M1 is formed between the bent portion 321 and the main body 31 . The first gap M1 provides elastic deformation space for the arm 32 when the arm 32 is subjected to an external force perpendicular to the optical axis L.

[0050] like Figure 5 As shown, in some embodiments, a second gap M2 is formed between the two ends of the bending portion 321 , and the second gap M2 provides elastic deformation space for the support arm 32 when the support arm 32 is subjected to an external force perpendicular to the optical axis L.

[0051] like Figure 5As shown, 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 spaced apart from the main body portion 31, the second extension portion 3212 is spaced 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 an end of the first extension portion 3211 away from the third extension portion 3213, the second end D is connected to an 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.

[0052] like Figure 5 As shown, in some embodiments, the main body 31 includes a first edge 311 and a second edge 312 opposite to the first edge 311 in a first direction X, the first direction X is 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.

[0053] like Figure 5 As shown, in some embodiments, the bending portion 321 further includes an arc portion 3214 , and the arc portion 3214 is connected between the first extension portion 3211 and the first end C.

[0054] like Figure 2 and Figure 3 、 Figure 9 and Figure 10 As shown, in some embodiments, the image sensor 300 is disposed between the elastic component 30 and the movable component 13, and the image sensor 300 is fixedly connected to the movable component 13 so as to follow the movable component 13 in its movement along the optical axis L when driven by the driving component 20. The elastic component 30 applies an elastic preload force in the direction of the optical axis L to the movable component 13 via the image sensor 300. It should be noted that the elastic component 30 may apply the elastic preload force in the direction of the optical axis L to the movable component 13 via the image sensor 300 directly or indirectly, and the specific method may be determined according to actual design requirements.

[0055] It should also be noted that, because the image sensor 300 is generally lighter than the lens assembly 200, in this embodiment, by connecting the image sensor 300 to the movable component 13, the power required to be output by the drive assembly 20 for driving the rotating component 12 to rotate and thereby drive the movable component 13 to reciprocate along the optical axis L is reduced. Consequently, the parameter requirements for the drive assembly 20 can be reduced, thereby enabling the use of a smaller drive assembly 20 to achieve miniaturization requirements and reduce costs.

[0056] like Figure 2 and Figure 3 、 Figure 9 and Figure 10 As shown, in some embodiments, the image sensor 300 includes a circuit board 310 and a sensor 320. The circuit board 310 is disposed between the elastic assembly 30 and the movable part 13. The circuit board 310 is fixedly connected to the movable part 13 so as to follow the movable part 13 when driven by the driving assembly 20 and move along the optical axis L. The sensor 320 is disposed on the side of the circuit board 310 facing the fixed part 11. The elastic assembly 30 applies an elastic preload force in the direction of the optical axis L to the movable part 13 through the circuit board 310.

[0057] like Figure 9 and Figure 10 As shown, in some embodiments, the adjustment assembly 10 may further include a connecting portion 15, which is connected to the image sensor 300 and the main body 31 respectively, and the main body 31, the connecting portion 15 and the image sensor 300 are arranged in sequence along the optical axis L. In this embodiment, the radial dimension of the adjustment mechanism can be reduced, and the radial dimension refers to the dimension perpendicular to the optical axis L. It can be understood that, with reference to Figure 9 The connection portion 15 can increase the axial distance between the image sensor 300 and the elastic component 30 , thereby enabling the elastic component 30 to generate elastic deformation along the optical axis L through the connection portion 15 .

[0058] In some embodiments, the connection portion 15 is an adhesive member, and the main body 31 and the image sensor 300 are bonded and fixed together via the connection portion 15. Of course, the main body 31 and the image sensor 300 are not limited to being bonded and fixed together via the connection portion 15. For example, in other embodiments, the main body 31 and the image sensor 300 may also be connected and fixed together using fasteners.

[0059] like Figure 9 and Figure 10 As shown, in some embodiments, the connecting portion 15 is connected to the circuit board 310 and the main body 31 respectively, and the main body 31 , the connecting portion 15 and the circuit board 310 are sequentially arranged along the optical axis L direction.

[0060] like Figure 2 and Figure 3 、 Figure 9 and Figure 10 As shown, in some embodiments, the elastic component 30 includes a heat conducting portion 33, which is used to transfer heat generated by the image sensor 300 while providing an elastic preload. In this embodiment, the heat conducting portion 33 also provides an elastic preload, further enhancing the vibration resistance of the adjustment mechanism. Furthermore, the heat conducting portion 33 can promptly dissipate heat generated during operation of the image sensor 300, preventing it from affecting image quality. As can be understood, when the temperature of the image sensor 300 decreases, noise caused by heat is reduced, and image quality is correspondingly improved.

[0061] The heat conducting portion 33 may be, but is not limited to, made of silicone with high thermal conductivity fibers added. It should be noted that when the heat conducting portion 33 is not used to provide elastic preload, the heat conducting portion 33 may be made of a graphite sheet to achieve a heat conducting effect.

[0062] like Figure 2 and Figure 3 、 Figure 9 and Figure 10 As shown, in some embodiments, the main body 31 is in thermal contact with the image sensor 300, and the heat conducting portion 33 is disposed on the side of the main body 31 facing away from the image sensor 300 and in thermal contact with the main body 31. Heat generated during operation of the image sensor 300 is transferred to the heat conducting portion 33 via the main body 31. Taking the connection between the main body 31 and the image sensor 300 as an example, the "thermal contact" mentioned above can be direct contact between the main body 31 and the image sensor 300 for thermal conduction, or indirect heat conduction can be achieved by disposing other heat conducting components between the main body 31 and the image sensor 300.

[0063] like Figure 9 and Figure 10 As shown, in some embodiments, the adjustment mechanism further includes a heat sink 40. The side of the heat conducting portion 33 facing away from the main body 31 abuts against the heat sink 40, and heat transferred from the image sensor 300 to the heat conducting portion 33 is dissipated from the heat sink 40. The heat sink 40 can be, but is not limited to, a metal member, such as a copper member, an aluminum member, or a copper alloy member or an aluminum alloy member.

[0064] In some embodiments, the heat conducting part 33 is made of an elastic material. When the heat conducting part 33 is installed, the heat dissipation component 40 and the main body 31 pre-tighten the heat conducting part 33, causing the heat conducting part 33 to produce a certain deformation, thereby causing the heat conducting part 33 to generate elastic force, and the elastic force acts on the main body 31 to form the elastic pre-tightening force.

[0065] It should be noted that, through the above embodiment, it can be seen that the elastic component 30 includes a spring piece formed by the main body 31 and the support arm 32, and also includes a heat conducting portion 33. However, the present invention is not limited to this embodiment. For example, in other embodiments, the elastic component 30 may include only a sheet-like member formed by the main body 31 and the support arm 32, or the elastic component 30 may include only the heat conducting portion 33. The specific configuration can be determined based on actual design requirements.

[0066] It should also be noted that the main body 31 and the support arm 32 can also be used as the heat conducting part 33 at the same time.

[0067] like Figure 2 、 Figure 3 、 Figure 6 、 Figure 7 As shown, in some embodiments, the transmission structure 14 includes an inclined portion 141 and a matching portion 142 that matches the inclined portion 141. The inclined portion 141 is provided on the movable component 13, and the matching portion 142 is provided on the rotating component 12. The inclined portion 141 includes a first inclined surface 1411, which is provided obliquely with respect to the optical axis L. The matching portion 142 matches the first inclined surface 1411 to convert the rotation of the rotating component 12 into translational motion of the movable component 13 along the optical axis L. The matching portion 142 can be in direct contact with the first inclined surface 1411, or it can be in indirect contact with the first inclined surface 1411, which can be determined according to actual design requirements.

[0068] The rotating component 12 can rotate around the optical axis L along the second direction (eg Figure 3 The second direction is opposite to the third direction. For example, when the rotating component 12 rotates in the second direction, the engaging portion 142 drives the movable component 13 away from the fixed component 11. When the rotating component 12 rotates in the second direction, the engaging portion 142 moves toward the first inclined surface 1411 and applies a force to the first inclined surface 1411. The component of this force toward the elastic component 30 pushes the movable component 13 toward the elastic component 30, causing the movable component 13 to move away from the fixed component 11, that is, the image sensor 300 to move away from the lens assembly 200. When the rotating component 12 rotates in the third direction, the engaging portion 142 moves away from the first inclined surface 1411. The movable component 13 loses the pushing effect of the rotating component 12 and, under the action of the elastic preload of the elastic component 30, moves toward the fixed component 11, that is, the image sensor 300 moves closer to the lens assembly 200.

[0069] like Figure 7As shown, in some embodiments, the mating portion 142 includes a second inclined surface 1421, which is arranged obliquely with respect to the optical axis L, and the first inclined surface 1411 and the second inclined surface 1421 are arranged opposite to each other. The "opposite arrangement" mentioned herein includes the second inclined surface 1421 being arranged directly opposite to the first inclined surface 1411, and also includes the second inclined surface 1421 being arranged diagonally opposite to the first inclined surface 1411. The specific arrangement depends on the relative position between the rotating component 12 and the movable component 13. For example, in the initial state, the second inclined surface 1421 is arranged directly opposite to the first inclined surface 1411. When the rotating component 12 rotates relative to the movable component 13, the second inclined surface 1421 and the first inclined surface 1411 are arranged diagonally opposite to each other.

[0070] In some embodiments, the second inclined surface 1421 is substantially parallel to the first inclined surface 1411. The second inclined surface 1421 is substantially parallel to the first inclined surface 1411, which includes the first inclined surface 1411 and the second inclined surface 1421 being parallel to each other, or the first inclined surface 1411 and the second inclined surface 1421 being inclined relative to each other at a small angle, for example, the first inclined surface 1411 and the second inclined surface 1421 are at an angle between 0° and 10°.

[0071] In the above embodiment, the inclined portion 141 and the matching portion 142 are matched in an inclined-surface-to-inclined manner. It should be noted that this embodiment is not limited thereto. For example, in some other embodiments, the matching portion 142 may be a protrusion that abuts against the first inclined surface 1411 of the inclined portion 141 .

[0072] like Figure 6 As shown, in some embodiments, the transmission structure 14 further includes a first rolling portion 143 , which is sandwiched between the first inclined surface 1411 and the second inclined surface 1421 and can roll along the first inclined surface 1411 and / or the second inclined surface 1421 .

[0073] The first rolling portion 143 can roll along the first inclined surface 1411 and / or the second inclined surface 1421 in the following three situations: The first rolling portion 143 can roll on both the first inclined surface 1411 and the second inclined surface 1421. The second rolling portion 143 can roll on the first inclined surface 1411 but not on the second inclined surface 1421. For example, the second inclined surface 1421 is provided with an embedded portion, and the first rolling portion 143 is rollably embedded in the embedded portion. The third rolling portion 143 can roll on the second inclined surface 1421 but not on the first inclined surface 1411. For example, the first inclined surface 1411 is provided with an embedded portion, and the first rolling portion 143 is rollably embedded in the embedded portion.

[0074] In this embodiment, by setting the first rolling portion 143 between the first inclined surface 1411 and the second inclined surface 1421, the friction between the rotating part 12 and the movable part 13 during relative movement can be reduced. When the rotating part 12 transmits motion to the movable part 13, the movable part 13 can respond quickly, run more smoothly, and reduce energy consumption.

[0075] In some embodiments, the first rolling portion 143 is a ball. Of course, the first rolling portion 143 is not limited to a ball. For example, in other embodiments, the first rolling portion 143 can also be a roller, such as a cylinder, as long as the rolling fit between the rotating component 12 and the movable component 13 can be achieved.

[0076] like Figure 6 As shown, in some embodiments, a first groove 131 is formed on the side of the movable part 13 facing the rotating part 12, the first groove 131 forms the inclined portion 141, the first inclined surface 1411 is the bottom surface 132 of the first groove 131, and the side surface 133 of the first groove 131 is used to limit the rolling stroke of the first rolling portion 143 along the first inclined surface 1411.

[0077] It should be noted that since the first rolling portion 143 is clamped between the first inclined surface 1411 and the second inclined surface 1421, the first rolling portion 143 is at least partially located in the first groove 131, which can reduce the size of the assembly formed by the movable component 13, the first rolling portion 143 and the rotating component 12 in the direction of the optical axis L to a certain extent, thereby reducing the size of the adjustment mechanism.

[0078] like Figure 6 As shown, in some embodiments, one end of the first inclined surface 1411 extends to the end surface of the movable component 13 facing the rotating component 12 . In this embodiment, the first groove 131 has only one side surface 133 .

[0079] like Figure 7 As shown, in some embodiments, a protrusion 121 is formed on the side of the rotating component 12 facing the movable component 13 , the protrusion 121 forms the matching portion 142 , and the surface of the protrusion 121 facing the movable component 13 is a second inclined surface 1421 .

[0080] like Figure 6 and Figure 7As shown, in some embodiments, the number of inclined portions 141 and the number of mating portions 142 are both three. The three inclined portions 141 are spaced apart around the optical axis L on the movable component 13, and the three mating portions 142 are spaced apart around the optical axis L on the rotating component 12. Furthermore, the three inclined portions 141 are equally spaced around the optical axis L on the movable component 13, and the three mating portions 142 are equally spaced around the optical axis L on the rotating component 12. It should be noted that the number of inclined portions 141 and the number of mating portions 142 are not limited to three, and may also be four or more, depending on actual design requirements.

[0081] It should be noted that the transmission structure 14 may not be provided with the first rolling portion 143 , and the first inclined surface 1411 and the second inclined surface 1421 may directly abut against each other.

[0082] In the above embodiment, the inclined portion 141 is provided on the movable component 13, and the matching portion 142 is provided on the rotating component 12. It should be noted that the positions of the inclined portion 141 and the matching portion 142 can be interchanged. That is, in other embodiments, such as Figure 14 and Figure 15 As shown, the inclined portion 141 is provided on the rotating component 12 , and the matching portion 142 is provided on the movable component 13 .

[0083] It is understandable that, since the inclined portion 141 may be provided on the rotating component 12 , in some other embodiments, the first groove 131 may be provided on the side of the rotating component 12 facing the movable component 13 .

[0084] For example, in some embodiments, Figures 13 to 18 As shown, the rotating component 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 component 12 faces the movable component 13, and the end surface of the third end 12a of the rotating component 12 is recessed toward the fourth end 12b to form a first groove 131. The first inclined surface 1411 is the bottom surface 132 of the first groove 131. The two side surfaces 133 of the first groove 131 in the direction surrounding the optical axis L are used to limit the rolling stroke of the first rolling portion 143 along the first inclined surface 1411.

[0085] In the above embodiment, the movable component 13 and the rotating component 12 are butted against each other in the direction of the optical axis L, one of the inclined surface portion 141 and the mating portion 142 is disposed on the side of the movable component 13 facing the rotating component 12, and the other of the inclined surface portion 141 and the mating portion 142 is disposed on the side of the rotating component 12 facing the movable component 13. It should be noted that the present invention is not limited to this embodiment. For example, in other embodiments, the movable component 13 may partially penetrate the rotating component 12, one of the inclined surface portion 141 and the mating portion 142 may be disposed on the outer sidewall of the movable component 13, and the other of the inclined surface portion 141 and the mating portion 142 may be disposed on the inner sidewall of the rotating component 12. Alternatively, in other embodiments, the rotating component 12 may partially penetrate the movable component 13, one of the inclined surface portion 141 and the mating portion 142 may be disposed on the inner sidewall of the movable component 13, and the other of the inclined surface portion 141 and the mating portion 142 may be disposed on the outer sidewall of the rotating component 12.

[0086] It should also be noted that, in the above embodiment, the inclined portion 141 and the matching portion 142 adopt an inclined surface-to-inclined surface matching manner. In the embodiment in which the movable component 13 partially penetrates the rotating component 12, an inclined groove inclined relative to the optical axis L can be provided on the outer side wall of the movable component 13, and a protrusion is provided on the inner side wall of the rotating component 12. The protrusion is embedded in the inclined groove. When the rotating component 12 rotates, the protrusion moves in the inclined groove to drive the movable component 13 to move along the optical axis L. Alternatively, in the embodiment in which the rotating component 12 partially penetrates the movable component 13, an inclined groove inclined relative to the optical axis L can be provided on the inner side wall of the movable component 13, and a protrusion is provided on the outer side wall of the rotating component 12. The protrusion is embedded in the inclined groove. When the rotating component 12 rotates, the protrusion moves in the inclined groove to drive the movable component 13 to move along the optical axis L.

[0087] like Figure 3 and Figure 9As shown, in some embodiments, the movable component 13 and the rotating component 12 are arranged along the optical axis L, and the elastic assembly 30 is further configured to provide an elastic preload force applied to the rotating component 12 and directed toward the fixed component 11. Specifically, the elastic preload force generated by the elastic assembly 30 is transmitted to the rotating component 12 via the movable component 13, thereby creating an elastic preload force between the rotating component 12 and the fixed component 11. This maintains the relative positions of the rotating component 12 and the fixed component 11 along the optical axis L. This ensures that the relative positions of the movable component 13, the rotating component 12, and the fixed component 11 along the optical axis L remain unchanged. This allows the adjustment mechanism to have excellent impact resistance and prevent unnecessary movement of the movable component 13 along the optical axis L even during large or rapid movements. This reduces problems such as breathing caused by unnecessary relative movement between the lens assembly 200 and the image sensor 300 along the optical axis L, thereby improving imaging quality.

[0088] Like him 9, Figure 10 、 Figure 17 、 Figure 18 As shown, in some embodiments, the adjustment assembly 10 further includes a second rolling portion 16, which is disposed between the rotating component 12 and the fixed component 11 to achieve rolling engagement between the rotating component 12 and the fixed component 11. This embodiment can reduce friction during relative motion between the rotating component 12 and the fixed component 11, resulting in faster response, smoother rotation, and lower energy consumption when the rotating component 12 rotates relative to the fixed component 11.

[0089] In some embodiments, the second rolling portion 16 is a ball. Of course, the second rolling portion 16 is not limited to a ball. For example, in other embodiments, the second rolling portion 16 can also be a roller, such as a cylinder, as long as the rolling fit between the rotating component 12 and the fixed component 11 can be achieved.

[0090] like Figure 10 、 Figure 13 and Figure 18As shown, in some embodiments, the rotating component 12 includes a third end 12a and a fourth end 12b opposite 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, and the end surface of the fourth end 12b of the rotating component 12 is recessed toward the third end 12a to form a second groove 122. The fixed component 11 includes an abutment portion 111 that is at least partially embedded in the second groove 122. The second rolling portion 16 is disposed between the abutment portion 111 and the bottom surface of the second groove 122. In this embodiment, the second rolling portion 16 can utilize the axial dimension of the rotating component 12, without requiring additional axial dimension to accommodate the second rolling portion 16. The axial dimension refers to the dimension along the optical axis L. Of course, in other embodiments, the second rolling portion 16 can also be sandwiched between the end surface of the rotating component 12 in the direction of the optical axis L and the fixed component 11. The specific design can be determined based on actual design requirements.

[0091] like Figure 18 As shown, in some embodiments, a third groove 1111 is provided on the side of the abutment portion 111 facing the rotating part 12, and the second rolling portion 16 is partially embedded in the third groove 1111. The third groove 1111 includes two spaced-apart limiting surfaces N1 in the direction around the optical axis L. The two limiting surfaces N1 are used to limit the rolling stroke of the second rolling portion 16 in the direction around the optical axis L.

[0092] like Figure 3 and Figure 10 As shown, in some embodiments, the fixed component 11 is an annular member surrounding the first through hole H1 , and the rotating component 12 and the movable component 13 are located in the first through hole H1 .

[0093] like Figure 3 As shown, in some embodiments, the fixing component 11 is an integrally formed component.

[0094] like Figure 10 As shown, in some other embodiments, the fixing component 11 includes a first structural member 112 and a second structural member 113 , and 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 fixing component 11 .

[0095] like Figure 3 and Figure 10As shown, in some embodiments, a first assembly portion 114 is provided on the side wall of the fixed component 11, and a second assembly portion 123 is provided on the side wall of the rotating component 12. The driving assembly 20 includes a coil 21 and a permanent magnet 22. The coil 21 is embedded in the first assembly portion 114, and the permanent magnet 22 is embedded in the second assembly portion 123. When the coil 21 is energized, the permanent magnet 22 is driven to rotate about the optical axis L, thereby driving the rotating component 12 to rotate relative to the fixed component 11. In this embodiment, when the driving assembly 20 drives the rotating component 12 to rotate relative to the fixed component 11, there is no contact between the rotating component 12 and the fixed component 11 in a direction perpendicular to the optical axis L. This 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.

[0096] like Figure 3 and Figure 10 As shown, in some embodiments, the number of first assembly portions 114 and the number of second assembly portions 123 are both three. The three first assembly portions 114 are spaced apart around the optical axis L on the fixed component 11, and the three second assembly portions 123 are spaced apart around the optical axis L on the rotating component 12. Furthermore, the three first assembly portions 114 are equally spaced around the optical axis L on the fixed component 11, and the three second assembly portions 123 are equally spaced around the optical axis L on the rotating component 12. Correspondingly, the number of coils 21 and the number of permanent magnets 22 are both three, with one coil 21 embedded in each assembly portion and one permanent magnet 22 embedded in each second assembly portion 123.

[0097] Of course, the number of first assembly parts 114 and the number of second assembly parts 123 are not limited to three. For example, in some other embodiments, the number of first assembly parts 114 and the number of second assembly parts 123 can also be one, two, four or more than four, which can be determined according to actual design requirements.

[0098] It should be noted that the positions of the coil 21 and the permanent magnet 22 can be interchanged, that is, in some other embodiments, the coil 21 can be embedded in the second assembly portion 123 and the permanent magnet 22 can be embedded in the first assembly portion 114 .

[0099] It should also be noted that the drive component 20 is not limited to the driving method of the coil 21 and the permanent magnet. For example, in some other embodiments, the drive component 20 can also adopt the driving method of the motor and the gear assembly, or the driving method of the motor and the worm gear pair, or directly adopt the motor driving method, which can be determined according to actual design needs.

[0100] like Figure 3 and Figure 10As shown, in some embodiments, the movable part 13 and the rotating part 12 are arranged along the optical axis L, the rotating part 12 is an annular part, and a second through hole H2 is formed around it. The movable part 13 is an annular part, and a third through hole H3 is formed around it. The second through hole H2 and the third through hole H3 are arranged opposite to each other, and the sensor 320 of the image sensor 300 is arranged opposite to the lens assembly 200. The second through hole H2 and the third through hole H3 are used to form an avoidance 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.

[0101] like Figure 9 and Figure 10 As shown, in some embodiments, the adjustment assembly 10 further includes a transparent member 17, which is connected to 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, and can protect the sensor 320.

[0102] An embodiment of the present invention further proposes an imaging device, which includes a lens assembly 200, an image sensor 300 and the above-mentioned adjustment mechanism, 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.

[0103] Since the proposed imaging device adopts the above-mentioned adjustment mechanism, the adjustment mechanism has better impact resistance. Even in the scenario of large-scale or rapid movement, it can prevent the movable component 13 from making unnecessary movement in the direction of the optical axis L, thereby reducing the occurrence of unnecessary relative movement between the lens assembly 200 and the image sensor 300 in the direction of the optical axis L and causing problems such as breathing effect, thereby improving the imaging quality.

[0104] The structures, connection relationships, extended descriptions and beneficial effects of other components of the imaging device proposed in this embodiment can refer to the above embodiments and will not be described in detail here.

[0105] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. An adjustment mechanism, characterized in that: Used to adjust the relative position between the lens assembly and the image sensor, the adjustment mechanism includes: an adjustment assembly, the adjustment assembly comprising a fixed component, a rotating component, and a movable component, wherein one of the lens assembly and the image sensor is disposed on the fixed component, and the other of the lens assembly and the image sensor is disposed 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, and the movable component being movable relative to the fixed component in a direction along the optical axis, and the movable component and / or the rotating component being provided with a transmission structure, the transmission structure being configured to act on the movable component and / or the rotating component as the rotating component rotates, so that the movable component moves relative to the fixed component along the optical axis; a driving assembly connected to the rotating component, the driving assembly being configured to drive the rotating component to rotate relative to the fixed component, thereby driving the movable component to reciprocate along the optical axis; and An elastic component is connected to the fixed component, and is used to provide an elastic preload force applied to the movable component and toward the rotating component. When the distance between the movable component and the fixed component along the optical axis is minimized, the elastic component still undergoes elastic deformation to generate an elastic preload force that keeps the movable component and / or the rotating component in contact with the transmission structure along the optical axis.

2. The adjustment mechanism according to claim 1, wherein: The elastic component includes a main body and one or more arms, wherein the one or more arms are connected to the fixed component, the main body and the multiple arms cooperate to provide an elastic preload force along the direction of the optical axis, and the one or more arms are configured to provide an elastic buffering force perpendicular to the direction of the optical axis.

3. The adjustment mechanism according to claim 2, wherein: Each of the support arms includes a first end and a second end, wherein the first end of the support arm is connected to the main body, and the second end of the support arm is connected to the fixed component. From the first end to the second end, the support arm is bent toward the rotating component so that the main body generates an elastic preload force applied to the movable component. Furthermore, when the distance between the movable component and the rotating component along the optical axis direction is minimum, the support arm still bends toward the rotating component.

4. The adjustment mechanism according to claim 2, wherein: The support arm includes a bending portion, and the bending portion can be elastically deformed due to an external force in a direction perpendicular to the optical axis to provide an elastic buffer force in the direction perpendicular to the optical axis.

5. The adjustment mechanism according to claim 4, wherein: A first gap is formed between the bending portion and the main body portion, and / or a second gap is formed between the two ends of the bending portion. The first gap and / or the second gap provide elastic deformation space for the support arm when the support arm is subjected to an external force perpendicular to the optical axis direction.

6. The adjustment mechanism according to claim 2, wherein: The image sensor is arranged between the elastic component and the movable part, and the image sensor is fixedly connected to the movable part so as to follow the movable part being driven by the driving component and move along the optical axis; the elastic component applies an elastic preload force in the optical axis direction to the movable part through the image sensor.

7. The adjustment mechanism according to claim 6, wherein: The adjustment component further includes a connecting portion, which is connected to the image sensor and the main body respectively, and the main body, the connecting portion and the image sensor are arranged in sequence along the optical axis direction.

8. The adjustment mechanism according to any one of claims 1 to 7, characterized in that: The elastic component includes a heat conducting portion, which is used to transfer heat generated by the image sensor while providing the elastic preload force.

9. The adjustment mechanism according to any one of claims 1 to 7, characterized in that: The transmission structure includes an inclined portion and a matching portion that matches the inclined portion, the inclined portion is arranged on one of the rotating component and the movable component, and the matching portion is arranged on the other of the rotating component and the movable component, the inclined portion includes a first inclined surface, and the first inclined surface is arranged to be inclined in the direction of the optical axis, and the matching portion matches the first inclined surface to convert the rotation of the rotating component into a translational motion of the movable component along the direction of the optical axis.

10. The adjustment mechanism according to claim 9, wherein: The matching portion includes a second inclined surface, the second inclined surface is arranged to be inclined with respect to the optical axis direction, and the first inclined surface and the second inclined surface are arranged opposite to each other.

11. The adjustment mechanism according to claim 10, wherein: The transmission structure further includes a first rolling portion, which is sandwiched between the first inclined surface and the second inclined surface and can roll along the first inclined surface and / or the second inclined surface.

12. The adjustment mechanism according to claim 11, wherein: A first groove is formed on the side of the movable part facing the rotating part, or a first groove is formed on the side of the rotating part facing the movable part, the first inclined surface is the bottom surface of the first groove, and the side surface of the first groove is used to limit the rolling stroke of the first rolling part along the first inclined surface.

13. The adjustment mechanism according to any one of claims 1 to 7, characterized in that: The movable component and the rotating component are arranged along the optical axis direction, and the elastic component is further used to provide an elastic pre-tightening force applied to the rotating component and toward the fixed component.

14. The adjustment mechanism according to any one of claims 1 to 7, characterized in that: The adjustment assembly further includes a second rolling portion, which is disposed between the rotating component and the fixed component and is used to achieve rolling cooperation between the rotating component and the fixed component.

15. An imaging device, characterized in that: include: lens assembly; Image sensor; as well as The adjustment mechanism according to any one of claims 1 to 14; 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.

Images