Lens adapter ring

Abstract

The invention relates to a lens adapter ring. The lens adapter ring comprises a lens clamping assembly, a driving assembly, a machine body clamping piece and a restraining piece. A bayonet capable of being matched with a lens is formed in the lens clamping assembly, a bayonet capable of being matched with a camera body is formed in the camera body clamping piece, the driving assembly is in threaded connection with the lens clamping assembly and the camera body clamping piece, and the restraining piece is used for preventing the lens clamping assembly and the camera body clamping piece from rotating along with rotation of the driving assembly; the lens adapter ring is provided with a light channel for light to reach the area surrounded by the bayonet of the camera body clamping piece from the area surrounded by the bayonet of the lens clamping assembly. And in the rotating process of the driving assembly, the bayonet of the lens clamping assembly and the bayonet of the machine body clamping piece are close to each other or far away from each other. The lens can be installed on the machine body through the lens adapter ring. The lens adapter ring adopts two thread groups to realize macro adjustment, and compared with an adapter ring which adopts a single thread group to realize macro adjustment, the lens adapter ring has a larger macro stroke.

Description

Technical Field

[0001] The present invention relates to the technical field of photographic equipment accessories, and in particular to a lens adapter ring for connecting a camera body and a lens. Background Art

[0002] At present, due to the fact that the bayonet design of some brands of digital cameras is not completely consistent, the lenses of these brands cannot be used interchangeably. For example, Leica M series lenses use Leica M bayonet, while Fuji GFX series cameras use G bayonet. The difference in bayonet design between the two makes it impossible to connect them directly, that is, Leica M series lenses cannot be directly installed on the body of Fuji GFX series cameras.

[0003] The common solution to the problem that the camera body and the lens cannot be directly connected due to the difference in the bayonet design is to add a lens adapter ring between the two. The lens adapter ring has a bayonet corresponding to the camera body and a bayonet corresponding to the lens. However, currently, such lens adapter rings cannot adjust the macro distance. Summary of the invention

[0004] In view of the above problems, the present invention is proposed to provide a lens adapter ring that overcomes the above problems or at least partially solves the above problems.

[0005] The lens adapter ring includes a lens clamping assembly, a driving assembly, a body clamping part, and a restraining part; the lens clamping assembly is formed with a bayonet capable of cooperating with the lens, and is formed with a first thread rotating in a first rotation direction; the driving assembly is formed with a second thread rotating in the first rotation direction, and the second thread cooperates with the first thread; the driving assembly is also formed with a third thread rotating in the second rotation direction; the body clamping part is formed with a bayonet capable of cooperating with the body, and is formed with a fourth thread rotating in the second rotation direction; the fourth thread cooperates with the third thread; the restraining part is used to prevent the lens clamping assembly and the body clamping part from rotating following the rotation of the driving assembly; the lens adapter ring is formed with a light channel for light to reach the area surrounded by the bayonet of the lens clamping assembly from the area surrounded by the bayonet of the body clamping part; during the rotation of the driving assembly, the bayonet of the lens clamping assembly and the bayonet of the body clamping part approach or move away from each other.

[0006] In one embodiment, a projection of the second thread on a plane passing through the thread axis thereof overlaps with a projection of the third thread on a plane passing through the thread axis thereof.

[0007] In one embodiment, the lens clamping assembly includes a lens clamping ring, a spring, and a driven ring; the lens clamping ring is fixedly connected to the driven ring, and the two together constrain the spring arranged between the lens clamping ring and the driven ring; the first thread is formed on the outer peripheral wall of the driven ring.

[0008] In one embodiment, the restraining member is fixedly connected to the body clamping member; the lens clamping ring and / or the driven ring form a guide groove or a guide hole, and the restraining member includes a linear guide portion extending into the guide groove or the guide hole of the lens clamping ring, and / or, extending into the guide groove or the guide hole of the driven ring, and the extension direction of the linear guide portion is parallel to the extension direction of the light channel.

[0009] In one embodiment, the drive assembly includes a drive ring, the second thread is formed on the inner circumferential wall of the drive ring, and the third thread is formed on the outer circumferential wall of the drive ring; the body clip is generally annular, and the fourth thread is formed on the inner circumferential wall of the body clip.

[0010] In one embodiment, the driving assembly further includes a stroke limiter, which is fixedly connected to the driving ring and is used to limit the rotation angle of the driving ring.

[0011] In one embodiment, the travel limiter is generally annular in shape, and its outer wall is formed with two stop portions, and the body clamping member is provided with a stop block, and when the drive ring is at the starting angle position or the terminal angle position of its rotation angle, the stop block abuts against the corresponding stop portion to prevent the drive ring from rotating beyond the restricted angle range.

[0012] In one embodiment, the driving assembly further includes a control ring, which is directly or indirectly fixedly connected to the driving ring, and the control ring covers the other end of the fuselage clip away from the end where the clip of the fuselage clip is located.

[0013] In one embodiment, the lens adapter ring also includes a locking assembly, which is installed on the control ring. The body clip is formed with a locking port, and a locking tongue of the locking assembly can extend into or leave the locking port to lock the relative position of the body clip and the control ring, or to unlock the relative position of the body clip and the control ring.

[0014] In one embodiment, the fuselage clamp includes a first ring portion, the fourth thread is formed on the inner circumferential wall of the first ring portion, the bayonet of the fuselage clamp is formed at one end of the first ring portion, and the edge of the other end of the first ring portion extends radially outward to form a first ring platform portion, and the fuselage clamp also includes a first annular guide portion fixed on the first ring platform portion, which is used to guide the control ring to cover the other end of the fuselage clamp away from the end where the bayonet of the fuselage clamp is located.

[0015] In one embodiment, the drive ring includes a second ring portion, the second thread is formed on the inner circumferential wall of the second ring portion, and the third thread is formed on the outer circumferential wall of the second ring portion; the drive ring also includes a second ring stage portion extending radially outward along one end edge of the second ring portion, and the second ring stage portion can abut against the first ring stage portion; the drive ring also includes a second annular guide portion fixed on the second ring stage portion for guiding the travel limit member to be installed on the drive ring.

[0016] The lens adapter ring of the present invention can realize the installation of the lens on the camera body, and solves the problem that the camera body and the lens cannot be connected due to the difference in the bayonet design. In addition, since the lens adapter ring adopts two thread groups to adjust the macro distance, compared with the adapter ring adopting a single thread group to adjust the macro distance, its macro distance travel can be larger. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The included drawings are used to provide a further understanding of the embodiments of the present application, which constitute a part of the specification, are used to illustrate the implementation methods of the present application, and together with the text description, explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0018] Figure 1 It is a structural schematic diagram of a lens adapter ring according to an exemplary embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the lens adapter from another perspective;

[0020] Figure 3 It is a partial cross-sectional view of the lens adapter ring;

[0021] Figure 4 This is an exploded view of the lens adapter ring;

[0022] Figure 5 It is a schematic diagram of the assembly of the fuselage clamping part, the driven ring, the restraining part, and the driving ring;

[0023] Figure 6 It is a partial cross-sectional view of the fuselage clamping member, the driven ring, the restraining member, and the driving ring;

[0024] Figure 7 is a schematic diagram of the structure of the drive ring;

[0025] Figure 8 It is a schematic diagram of the assembly of the fuselage clamping parts, the drive ring, and the travel limiter;

[0026] Fig. 9It is a partial cross-sectional view of the fuselage clamping part, the driving ring, and the travel limiter;

[0027] Fig.10 It is a schematic diagram of the assembly of the fuselage clamping part and the travel limit part;

[0028] Fig.11 It is a schematic diagram of the assembly of the fuselage clamp, drive ring, travel limiter, control ring, and locking assembly;

[0029] Fig.12 It is a partial cross-sectional view of the fuselage clamp, the drive ring, the travel limiter, the control ring, and the locking assembly;

[0030] Fig.13 It is a structural schematic diagram of the lens clamping assembly;

[0031] Fig.14 It is a partial cross-sectional view of the lens clamping assembly;

[0032] Fig.15 It is a structural schematic diagram of a lens mounting ring;

[0033] Fig.16 It is a schematic diagram of the assembly of the control ring and the locking assembly;

[0034] Fig.17 Exploded view of both the control ring and the locking assembly.

[0035] Explanation of the reference numerals in the accompanying drawings: 1. lens clamping assembly; 2. driving assembly; 3. body clamping member; 4. restraining member; 5. bayonet; 6. bayonet; 7. first thread; 8. second thread; 9. third thread; 10. fourth thread; 11. lens clamping ring; 12. spring; 13. driven ring; 14. groove; 15. guide groove; 16. linear guide; 17. driving ring; 18. travel limiter; 19. stopper; 20. block; 21. control ring; 22. locking assembly; 23. lock port; 24. lock tongue; 25. spring; 26. base; 27. first ring portion; 28. first ring platform portion; 29. ​​first annular guide portion; 30. second ring portion; 31. second ring platform portion; 32. second annular guide portion. DETAILED DESCRIPTION

[0036] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but cannot be understood as limiting the present invention. A person of ordinary skill in the art may make various changes, modifications, substitutions and variations to these embodiments without departing from the principles and purpose of the present invention. The scope of the present invention is defined by the claims and their equivalents.

[0037] The terms "center", "longitudinal", "lateral", "length", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like mentioned or may be mentioned in the description of the present invention indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In addition, the terms "include", "comprises" and any variations thereof are intended to cover non-exclusive inclusions.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] A lens adapter ring according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0041] See also Figures 1 to 4 According to an embodiment of the present invention, a lens adapter ring includes a lens clamping assembly 1, a driving assembly 2, a body clamping member 3, and a restraining member 4. The lens clamping assembly 1 is formed with a bayonet 5 that can cooperate with the lens. Specifically, the bayonet 5 is matched with the bayonet at the end of the lens to achieve the installation of the lens adapter ring on the lens. The bayonet designs of some brands of lenses are not completely consistent. Therefore, in actual applications, the bayonet 5 of the lens clamping assembly 1 needs to match the bayonet of the lens to be installed.

[0042] The body clip 3 is formed with a clip 6 that can be matched with the body. Specifically, the clip 6 is matched with the clip of the body to realize the installation of the lens adapter ring on the body. The clip designs of the bodies of some brands are not completely consistent. Therefore, in actual application, the clip 6 of the body clip 3 needs to match the clip of the body to be installed.

[0043] By connecting the lens adapter to the lens and the camera body at the same time, the lens can be installed on the camera body through the lens adapter, thus solving the problem that the camera body and the lens cannot be connected due to the difference in the bayonet design. For example, the Leica M series lens can be installed on the Fuji GFX series camera through the lens adapter.

[0044] The lens clamping assembly 1 is formed with a first thread 7 that rotates in a first rotation direction. The driving assembly 2 is formed with a second thread 8 that rotates in the first rotation direction, and the second thread 8 cooperates with the first thread 7. The driving assembly 2 is also formed with a third thread 9 that rotates in a second rotation direction. The body clamping part 3 is formed with a fourth thread 10 that rotates in the second rotation direction, and the fourth thread 10 cooperates with the third thread 9. The first thread 7 and the second thread 8 can both be left-handed threads, and the third thread 9 and the fourth thread 10 can both be right-handed threads; or, the first thread 7 and the second thread 8 can both be right-handed threads, and the third thread 9 and the fourth thread 10 can both be left-handed threads.

[0045] The restraining member 4 is used to prevent the lens clamping assembly 1 and the body clamping member 3 from rotating following the rotation of the driving assembly 2. Therefore, rotating the driving assembly 2 can cause the lens clamping assembly 1 and the body clamping member 3 to move. The lens adapter ring is formed with a light channel for light to reach the area surrounded by the bayonet 5 of the lens clamping assembly 1 and the bayonet 6 of the body clamping member 3 from the area surrounded by the bayonet 6 of the body clamping member 3. In this embodiment, the light channel is located in the middle of the lens adapter ring. During the rotation of the driving assembly 2, the bayonet 5 of the lens clamping assembly 1 and the bayonet 6 of the body clamping member 3 are close to or away from each other. For example, when the driving assembly 2 rotates clockwise, the bayonet 5 of the lens clamping assembly 1 and the bayonet 6 of the body clamping member 3 are close to each other; when the driving assembly 2 rotates counterclockwise, the bayonet 5 of the lens clamping assembly 1 and the bayonet 6 of the body clamping member 3 are away from each other. Therefore, the macro distance can be adjusted by rotating the driving assembly 2.

[0046] Since the lens adapter ring adopts two thread groups to adjust the macro distance, its macro distance stroke can be larger than that of the adapter ring adopting a single thread group to adjust the macro distance. For example, the macro distance stroke achieved by the thread group consisting of the first thread 7 and the second thread 8 is 3.5nm, and the macro distance stroke achieved by the thread group consisting of the third thread 9 and the fourth thread 10 is 4.5nm, then its total macro distance stroke can be 8nm, which is greater than the macro distance stroke achieved by the thread group consisting of only one thread and the second thread 8, or the macro distance stroke achieved by the thread group consisting of only the third thread 9 and the fourth thread 10.

[0047] Moreover, in this embodiment, the projection of the second thread 8 on the plane passing through the thread axis overlaps with the projection of the third thread 9 on the plane passing through the thread axis, so the lens adapter ring can achieve a smaller axial length and a larger macro stroke.

[0048] See now Figures 13 to 15 The lens clamping assembly may include a lens clamping ring 11, a spring 12, and a driven ring 13. The lens clamping ring 11 is fixedly connected to the driven ring 13, for example, by bolts, and the lens clamping ring 11 and the driven ring 13 jointly constrain the spring 12 arranged between the lens clamping ring 11 and the driven ring 13.

[0049] In this embodiment, the end surface where the lens clamping ring 11 and the driven ring 13 meet is formed with a groove 14 that cooperates with the spring 12, and the groove 14 can limit the rotation of the spring 12 relative to the lens clamping ring 11. The lens clamping ring 11 and the driven ring 13 can both abut against the spring 12 at the same time to limit the axial movement of the spring 12 relative to the lens clamping ring 11. In another embodiment, the lens clamping ring 11 and the driven ring 13 can limit the axial movement of the spring 12 relative to the lens clamping ring 11 to a small range.

[0050] The bayonet 5 of the lens bayonet assembly is formed on the inner peripheral wall of the lens bayonet ring 11 , and the first thread 7 is formed on the outer peripheral wall of the driven ring 13 .

[0051] See now Figure 1 , Figure 2 , Figure 5 and Figure 6 In this embodiment, the constraint 4 is fixedly connected to the body clamping member 3, such as by bolts. The lens clamping ring 11 and the driven ring 13 both form a guide groove 15, and the constraint 4 includes a linear guide portion 16 that can simultaneously extend into the guide groove 15 of the lens clamping ring 11 and the guide groove 15 of the driven ring 13. Of course, the linear guide portion 16 needs to have a sufficient length; the linear guide portion 16 matches the guide groove 15 of the lens clamping ring 11 and the guide groove 15 of the driven ring 13. The extension direction of the linear guide portion 16 is parallel to the extension direction of the light channel, so that the lens clamping assembly 1 can only move relative to the body clamping member 3 along the extension direction of the linear guide portion 16, that is, along the extension direction of the light channel.

[0052] In another embodiment, the lens mounting ring 11 and the driven ring 13 are both formed with guide holes, and the linear guide portion 16 can simultaneously extend into the guide holes of the lens mounting ring 11 and the guide holes of the driven ring 13; the linear guide portion 16 matches the guide holes of the lens mounting ring 11 and the guide holes of the driven ring 13.

[0053] In another embodiment, the restraining member 4 is fixedly connected to the lens clamping ring 11 or the driven ring 13 , the body clamping member 3 is formed with a guide groove or a guide hole, and the linear guide portion 16 extends into the guide groove or the guide hole of the body clamping member 3 .

[0054] See now Figure 3 , Figure 5 , Figure 6 ,and Figure 7 The driving assembly 2 includes a driving ring 17, the second thread 8 is formed on the inner peripheral wall of the driving ring 17, and the third thread 9 is formed on the outer peripheral wall of the driving ring 17. The body clamping part 3 is generally annular, and the fourth thread 10 is formed on the inner peripheral wall of the body clamping part 3. That is, the driving ring 17 is threadedly connected to the body clamping part 3, and the driving ring 17 is threadedly connected to the driven ring 13, so that the rotation of the driving ring 17 can cause the driven ring 13 to move relative to the body clamping part 3 along the extension direction of the light channel, thereby causing the lens clamping assembly 1 to move relative to the body clamping part 3 along the extension direction of the light channel.

[0055] See now Figure 3 , Figure 8 , Fig. 9 ,and Fig.10 The driving assembly 2 may further include a travel limiter 18, which is fixedly connected to the driving ring 17, such as by bolts, and is used to limit the rotation angle of the driving ring 17. Specifically, in this embodiment, the travel limiter 18 is generally annular, and its outer peripheral wall is formed with two stoppers 19, and the fuselage clamping member 3 is provided with a stopper 20. When the driving ring 17 is at the starting angle position or the terminal angle position of its rotation angle range, the stopper 20 abuts against the corresponding stopper 19 to prevent the driving ring 17 from rotating beyond the limited angle range.

[0056] See now Figure 3 , Fig.11 ,and Fig.12 The driving assembly 2 may further include a control ring 21, and the outer peripheral wall of the control ring 21 may be formed with strip-shaped protrusions distributed along the circumferential direction to increase the friction coefficient of the outer peripheral wall of the rotating control ring 21. The control ring 21 is fixedly connected to the travel limiter 18, such as by bolts. The control ring 21 covers the other end of the body clip 3 away from the end where the bayonet 6 of the body clip 3 is located. Since the travel limiter 18 is fixedly connected to the driving ring 17, the driving ring 17 can be rotated synchronously by rotating the control ring 21, thereby prompting the lens clip assembly 1 to move relative to the body clip 3 along the extension direction of the light channel.

[0057] See now Figure 2 , Fig.16 ,and Fig.17The lens adapter ring further comprises a locking assembly 22, which is mounted on the control ring 21. The body clip 3 is formed with a locking port 23. The locking tongue 24 of the locking assembly 22 can extend into or leave the locking port 23 to lock the relative position of the body clip 3 and the control ring 21, or release the locking of the relative position of the body clip 3 and the control ring 21. Since the body clip 3 and the driving assembly 2 are threadedly connected through the third thread 9 and the fourth thread 10, the driving assembly 2 can rotate relative to the body clip 3, that is, the control ring 21 can rotate relative to the body clip 3. The addition of the locking assembly 22 can facilitate the removal of the lens adapter ring from the body.

[0058] In this embodiment, the locking assembly 22 includes a spring piece 25, a lock tongue 24, and a base 26. The base 26 is formed with a mounting hole, and the lock tongue 24 is partially mounted in the mounting hole. The spring piece 25 is used to cause the lock tongue 24 to move away from the base 26, so that the lock tongue 24 remains in an extended state when no external force is applied. The base 26 can be fixed to the control ring 21 by bolts. It should be understood that the locking assembly 22 can also adopt other structures, which are not listed here one by one.

[0059] See now Fig.12 In this embodiment, the fuselage clamp 3 includes a first ring portion 27, the fourth thread 10 is formed on the inner circumferential wall of the first ring portion 27, the bayonet 6 of the fuselage clamp 3 is formed at one end of the first ring portion 27, and the edge of the other end of the first ring portion 27 extends radially outward to form a first ring stage portion 28. The fuselage clamp 3 also includes a first annular guide portion 29 fixed on the first ring stage portion 28, which is used to guide the control ring 21 to cover the other end of the fuselage clamp 3 away from the bayonet 6 of the fuselage clamp 3.

[0060] The drive ring 17 includes a second ring portion 30, the second thread 8 is formed on the inner circumferential wall of the second ring portion 30, and the third thread 9 is formed on the outer circumferential wall of the second ring portion 30. The drive ring 17 also includes a second ring stage portion 31 radially extending outward along one end edge of the second ring portion 30, and the second ring stage portion 31 can abut against the first ring stage portion 28. The drive ring 17 also includes a second annular guide portion 32 fixed on the second ring stage portion 31 and used to guide the travel limiter 18 to be installed on the drive ring 17.

[0061] The lens adapter ring of the embodiment of the present invention can realize the installation of the lens on the camera body, and solves the problem that the camera body and the lens cannot be connected due to the difference in the bayonet design. In addition, since the lens adapter ring adopts two thread groups to adjust the macro distance, the macro distance travel can be larger than that of the adapter ring adopting a single thread group to adjust the macro distance.

Claims

1. A lens adapter ring, characterized in that: The invention comprises a lens clamping assembly, a driving assembly, a body clamping part, and a restraining part; the lens clamping assembly is formed with a bayonet capable of cooperating with the lens, and is formed with a first thread rotating in a first rotation direction; the driving assembly is formed with a second thread rotating in the first rotation direction, and the second thread cooperates with the first thread; the driving assembly is also formed with a third thread rotating in a second rotation direction; the body clamping part is formed with a bayonet capable of cooperating with the body, and is formed with a fourth thread rotating in the second rotation direction; the fourth thread cooperates with the third thread; the restraining part is used to prevent the lens clamping assembly and the body clamping part from rotating following the rotation of the driving assembly; the lens adapter ring is formed with a light channel for light to reach the area surrounded by the bayonet of the lens clamping assembly from the area surrounded by the bayonet of the body clamping part; during the rotation of the driving assembly, the bayonet of the lens clamping assembly and the bayonet of the body clamping part approach or move away from each other.

2. The lens adapter ring according to claim 1, characterized in that: A projection of the second thread on a plane passing through the thread axis thereof overlaps with a projection of the third thread on a plane passing through the thread axis thereof.

3. The lens adapter ring according to claim 1 or 2, characterized in that: The lens clamping assembly includes a lens clamping ring, a spring, and a driven ring; the lens clamping ring is fixedly connected to the driven ring, and the two together constrain the spring arranged between the lens clamping ring and the driven ring; the first thread is formed on the outer peripheral wall of the driven ring.

4. The lens adapter ring according to claim 3, characterized in that: The restraining member is fixedly connected to the body clamping member; the lens clamping ring and / or the driven ring form a guide groove or a guide hole, and the restraining member includes a linear guide portion extending into the guide groove or the guide hole of the lens clamping ring, and / or, extending into the guide groove or the guide hole of the driven ring, and the extending direction of the linear guide portion is parallel to the extending direction of the light channel.

5. The lens adapter ring according to claim 3, characterized in that: The driving assembly includes a driving ring, the second thread is formed on the inner circumferential wall of the driving ring, and the third thread is formed on the outer circumferential wall of the driving ring; the fuselage clamping part is generally annular, and the fourth thread is formed on the inner circumferential wall of the fuselage clamping part.

6. The lens adapter ring according to claim 5, characterized in that: The driving assembly further comprises a travel limiter, which is fixedly connected to the driving ring and is used to limit the rotation angle of the driving ring.

7. The lens adapter ring according to claim 6, characterized in that: The stroke limiter is generally annular, and its outer wall is formed with two stoppers. The body clamping part is provided with a stopper. When the drive ring is at the starting angle position or the terminal angle position of its rotation angle, the stopper abuts against the corresponding stopper to prevent the drive ring from rotating beyond the restricted angle range.

8. The lens adapter ring according to claim 6, characterized in that: The driving assembly further comprises a control ring, which is directly or indirectly fixedly connected to the driving ring, and covers the other end of the fuselage clamping part away from the end where the clamping port of the fuselage clamping part is located.

9. The lens adapter ring according to claim 8, characterized in that: It also includes a locking component, which is installed on the control ring. The fuselage clip is formed with a locking opening. The locking tongue of the locking component can extend into or leave the locking opening to lock the relative position of the fuselage clip and the control ring, or release the lock on the relative position of the fuselage clip and the control ring.

10. The lens adapter ring according to claim 8, characterized in that: The fuselage clamping member includes a first ring portion, the fourth thread is formed on the inner circumferential wall of the first ring portion, the bayonet of the fuselage clamping member is formed at one end of the first ring portion, and the edge of the other end of the first ring portion radially extends outward to form a first ring stage portion, the fuselage clamping member also includes a first annular guide portion fixed on the first ring stage portion, used to guide the control ring to cover the other end of the fuselage clamping member away from the end where the bayonet of the fuselage clamping member is located; the driving ring includes a second ring portion, the second thread is formed on the inner circumferential wall of the second ring portion, and the third thread is formed on the outer circumferential wall of the second ring portion; the driving ring also includes a second ring stage portion formed by radially extending outward along the edge of one end of the second ring portion, and the second ring stage portion can be against the first ring stage portion; the driving ring also includes a second annular guide portion fixed on the second ring stage portion, used to guide the travel limiter to be installed on the driving ring.

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