Focusing scale switching device and optical lens

Abstract

The utility model provides a focusing scale switching device and an optical lens. The focusing scale switching device comprises a rotation driving lens cone, a scale ring coaxially arranged with the rotation driving lens cone, and an outer cover lens cone coaxially sleeved on the scale ring. Wherein the rotation driving lens cone is used for driving the scale ring to rotate relative to the outer cover lens cone; the scale ring is sequentially provided with a first scale of a first measurement unit and a second scale of a second measurement unit in the axial direction of the scale ring, the scale ring is provided with a first end and a second end which are opposite in the axial direction of the scale ring, and the scale ring selectively enables the first end or the second end to be in butt joint with the rotary driving lens cone; the outer cover lens barrel is provided with a scale groove, a first scale is exposed when the first end of the scale groove is in butt joint with the rotary driving lens barrel, and a second scale is exposed when the second end of the scale groove is in butt joint with the rotary driving lens barrel. Through adoption of the technical scheme, quick switching of the focusing scales of two different measurement units is realized, and diversified requirements of users with different regions and use habits are met.

Description

Technical Field

[0001] The utility model relates to the technical field of optical lenses, and more specifically to a focus scale switching device and an optical lens. Background Art

[0002] In optical equipment, the focusing system is one of its core functions. In order to focus accurately and obtain clear images or videos, users usually need to rely on scale rings and scale markings to determine the focus distance. However, due to differences in different regions and user habits, there are different requirements for metric and imperial focus scales. Existing optical lens focusing systems usually only provide scale markings for one unit of measurement, which to a certain extent limits the user's flexibility. Although some advanced optical lenses provide scales in different units of measurement, it often requires complex operations to switch, and calibration equipment is also required for calibration, and the operation method is not convenient enough. Utility Model Content

[0003] The utility model aims to provide a focus scale switching device and an optical lens, so as to solve the technical problems in the prior art that the focus scale of the optical lens is poorly flexible in adjusting different measurement units and the operation is complicated.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] In a first aspect, a focus scale switching device is provided, comprising:

[0006] A rotationally driven lens barrel, a scale ring coaxially arranged with the rotationally driven lens barrel, and an outer cover lens barrel coaxially sleeved on the scale ring; wherein the rotationally driven lens barrel is used to drive the scale ring to rotate relative to the outer cover lens barrel; the scale ring is provided with a first scale of a first unit of measurement and a second scale of a second unit of measurement in sequence along its own axial direction, the scale ring is provided with a first end and a second end opposite to each other in its own axial direction, and the scale ring selectively enables the first end or the second end to dock with the rotationally driven lens barrel; the outer cover lens barrel is provided with a scale groove, the scale groove exposes the first scale when the first end docks with the rotationally driven lens barrel, and the scale groove exposes the second scale when the second end docks with the rotationally driven lens barrel.

[0007] By adopting the above technical solution, the focus scale of two different measurement units can be quickly switched, meeting the diverse needs of users in different regions and with different usage habits; in addition, the switching operation of the scale ring is intuitive and simple, without relying on external equipment or complicated operating steps, thereby improving the user's work efficiency.

[0008] In one embodiment, the outer housing barrel is provided with a scale mark, which is arranged close to the scale groove and is used to point to the value of the first scale or the second scale.

[0009] By adopting the above technical solution, the user obtains the focus value of the optical lens.

[0010] In one embodiment, the outer cover barrel is provided with two scale grooves, the two scale grooves are respectively located on both sides of the outer cover barrel, the scale ring is provided with two first scales and two second scales, the first scales and the second scales are alternately arranged along the axial direction of the scale ring, the two scale grooves respectively expose the corresponding first scales when the first end is docked with the outer cover barrel, and the two scale grooves respectively expose the corresponding second scales when the second end is docked with the outer cover barrel.

[0011] By adopting the above technical solution, the scale grooves on both sides of the outer cover barrel can correspond to the exposed scales, which is beneficial for different users to obtain focus values ​​from different directions and improves the functionality of the optical lens.

[0012] In one embodiment, the two scale grooves are arranged symmetrically based on the center of the scale ring.

[0013] By adopting the above technical solution, the function of the two scale grooves of the outer cover lens barrel corresponding to the exposure scales respectively is achieved.

[0014] In one embodiment, the scale ring is provided with a first elongated connecting groove, which extends along the circumference of the scale ring. The rotation driving barrel is provided with a first connecting hole located in the groove length direction of the first connecting groove. A first connecting member is connected between the scale ring and the rotation driving barrel, and the first connecting member is used to connect any part of the first connecting groove in the groove length direction and the first connecting hole, so that the scale ring is fixedly connected to the rotation driving barrel.

[0015] By adopting the above technical solution, the relative rotation angle between the scale ring and the rotationally driven lens barrel can be adjusted.

[0016] In one embodiment, the first scale is a metric scale, and the second scale is an English scale.

[0017] By adopting the above technical solution, the optical lens can be switched between the metric scale and the imperial scale.

[0018] In one embodiment, the inner wall of the rotation drive lens barrel is provided with a drive thread for driving the optical lens to move along the axial direction.

[0019] By adopting the above technical solution, the function of rotating the lens barrel to drive the optical lens to move for focusing is achieved.

[0020] In one embodiment, the focus scale switching device also includes a gear ring coaxially arranged on the rotation drive barrel, the gear ring is provided with a first identification structure for calibrating the scale ring, and the scale ring is provided with a second identification structure corresponding to the first identification structure.

[0021] By adopting the above technical solution, the user can calibrate when switching between metric and imperial scale rings through the first identification structure and the second identification structure to achieve scale switching, thereby improving the accuracy and reliability of switching and ensuring the accuracy of focusing.

[0022] In one embodiment, the gear ring is provided with a second elongated connecting groove, the second connecting groove extends along the circumference of the gear ring, the rotation driving barrel is provided with a second connecting hole located in the groove length direction of the second connecting groove, and a second connecting member is connected between the gear ring and the rotation driving barrel, and the second connecting member is used to connect any part of the second connecting groove in the groove length direction and the second connecting hole, so that the gear ring is fixedly connected to the rotation driving barrel.

[0023] By adopting the above technical solution, the relative rotation angle between the gear ring and the rotationally driven lens barrel can be adjusted.

[0024] In a second aspect, an optical lens is provided, comprising an optical lens body and the above-mentioned focus scale switching device, wherein the focus scale switching device is mounted on the optical lens body.

[0025] By adopting the above technical solution, on the basis of having the advantages of the focus scale switching device of the above embodiment, the optical lens of this embodiment also has the advantage of being easy to switch between different system scales. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 It is a three-dimensional structural diagram of a focus scale switching device provided in an embodiment of the utility model.

[0028] Figure 2 It is an exploded diagram of the focus scale switching device provided in an embodiment of the utility model.

[0029] Figure 3 It is a cross-sectional view of a focus scale switching device provided in an embodiment of the utility model.

[0030] Figure 4 It is a three-dimensional structural diagram of the outer cover lens barrel provided by the embodiment of the utility model.

[0031] The reference numerals in the figures are:

[0032] 1. Rotating drive lens barrel; 2. Scale ring; 3. Outer cover lens barrel; 4. Gear ring;

[0033] 12. First connecting hole; 13. Driving thread; 14. Second connecting hole; 21. First scale; 22. Second scale; 23. First end; 24. Second end; 25. First connecting groove; 26. Second identification structure; 31. Scale groove; 32. Scale identification; 41. First identification structure; 42. Second connecting groove. DETAILED DESCRIPTION

[0034] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0035] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly located on the other element or indirectly located on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element.

[0036] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention, and do not indicate that a device or element must have a specific direction, be constructed and operated in a specific direction. Therefore, it should not be understood as a limitation on the present invention.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating relative importance or indicating the number of technical features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. The following is a more detailed description of the specific implementation of the present utility model in conjunction with specific embodiments:

[0038] like Figures 1 to 3As shown, a focus scale switching device provided by an embodiment of the utility model is applied to an optical lens, wherein the focus scale switching device can switch scales of two different measurement units, so that the optical lens can be suitable for different regions or user habits, thereby improving the flexibility of the user when using the optical lens; the following is described through specific implementation methods:

[0039] The focus scale switching device of this embodiment includes:

[0040] A rotationally driven lens barrel 1, a scale ring 2 coaxially arranged with the rotationally driven lens barrel 1, and an outer cover lens barrel 3 coaxially sleeved on the scale ring 2; wherein the rotationally driven lens barrel 1 is used to drive the scale ring 2 to rotate relative to the outer cover lens barrel 3; the scale ring 2 is provided with a first scale 21 of a first unit of measurement and a second scale 22 of a second unit of measurement in sequence along its own axial direction, the scale ring 2 is provided with a first end 23 and a second end 24 opposite to each other in its own axial direction, and the scale ring 2 selectively docks the first end 23 or the second end 24 with the rotationally driven lens barrel 1; the outer cover lens barrel 3 is provided with a scale groove 31, the scale groove 31 exposes the first scale 21 when the first end 23 docks with the rotationally driven lens barrel 1, and the scale groove 31 exposes the second scale 22 when the second end 24 docks with the rotationally driven lens barrel 1.

[0041] Here, it can be understood that the rotationally driven lens barrel 1 refers to the lens barrel in the optical lens, which is used to drive the lens in the optical lens to move axially so that the optical lens can achieve the focusing function; the rotationally driven lens barrel 1 is coaxially arranged with the scale ring 2, and the rotationally driven lens barrel 1 is used to drive the scale ring 2 to rotate, wherein the scale ring 2 rotates relative to the outer cover lens barrel 3 around the axis of the outer cover lens barrel 3;

[0042] The scale ring 2 refers to an annular component with scales; the scale ring 2 is coaxially arranged with the rotation drive lens barrel 1, and can rotate relative to the outer cover lens barrel 3 under the drive of the rotation drive lens barrel 1, and here, the scale ring 2 can rotate relative to the outer cover lens barrel 3 around the axis of the outer cover lens barrel 3; the scale ring 2 is provided with a first scale 21 and a second scale 22 along its own axial direction, wherein the first scale 21 is a scale of a first unit of measurement, and the second scale 22 is a scale of a second unit of measurement, and the two units of measurement are different; the scale ring 2 is provided with a first end 23 and a second end 24, wherein the first end 23 and the second end 24 are arranged oppositely in the axial direction of the scale ring 2, and the scale ring 2 can select the first end 23 or the second end 24 to dock with the rotation drive lens barrel 1;

[0043] The outer cover barrel 3 refers to the barrel in the optical lens, which is used to connect with the lens in the optical lens so that the optical lens can realize the focusing function; the outer cover barrel 3 is sleeved on the scale ring 2 and is coaxially arranged with the scale ring 2; the outer cover barrel 3 is provided with a scale groove 31, when the first end 23 of the scale ring 2 is docked with the rotation drive barrel 1, the first scale 21 on the scale ring 2 just corresponds to the scale groove 31, so that the scale groove 31 can expose the first scale 21; when the second end 24 of the scale ring 2 is docked with the rotation drive barrel 1, the second scale 22 on the scale ring 2 just corresponds to the scale groove 31, so that the scale groove 31 can expose the second scale 22.

[0044] The working principle of the focus scale switching device of this embodiment is as follows:

[0045] The user selects different scales to perform the focusing operation of the optical lens according to the region or habit requirements; wherein, in this embodiment, the first scale 21 is a metric scale, that is, the measurement unit of the first scale 21 is a metric unit, and the second scale 22 is an English scale, that is, the measurement unit of the second scale 22 is an English unit; when the user needs to use the first scale 21, the scale ring 2 is disassembled from the rotation drive lens barrel 1, the first end 23 of the scale ring 2 is re-connected with the rotation drive lens barrel 1, and the outer cover lens barrel 3 is again sleeved on the scale ring 2. At this time, the scale groove 31 of the outer cover lens barrel 3 exposes the first scale 21 on the scale ring 2, wherein the rotation drive lens barrel 1 is rotated to the first end 23 of the scale ring 2. The rotation-driven lens barrel 1 can drive the scale ring 2 to rotate relative to the external lens barrel, so that the first scale 21 on the scale ring 2 realizes the corresponding function in the focusing operation; similarly, when the user needs to use the second scale 22, the scale ring 2 is disassembled from the rotation-driven lens barrel 1, the second end 24 of the scale ring 2 is re-connected with the rotation-driven lens barrel 1, and the outer cover lens barrel 3 is again sleeved on the scale ring 2. At this time, the scale groove 31 of the outer cover lens barrel 3 exposes the second scale 22 on the scale ring 2, wherein the rotation-driven lens barrel 1 can drive the scale ring 2 to rotate relative to the external lens barrel, so that the second scale 22 on the scale ring 2 realizes the corresponding function in the focusing operation.

[0046] It needs to be further explained that the connection between the rotationally driven lens barrel 1, the scale ring 2 and the outer cover lens barrel 3 can be a direct connection or an indirect connection; for example, the above three are indirectly connected, and the optical lens includes a first optical module and a second optical module, wherein the rotationally driven lens barrel 1 and the scale ring 2 are fixedly connected to the first optical module, and the outer cover lens barrel 3 is connected to the second optical module, and the rotationally driven lens barrel 1 can drive the first optical module to move to adjust the distance between the first optical module and the second optical module, thereby realizing the focusing or focusing adjustment function.

[0047] By adopting the above technical solution, fast switching of focus scales of two different measurement units is achieved, meeting the diverse needs of users from different regions and with different usage habits; in addition, the switching operation of the scale ring 2 is intuitive and simple, without relying on external equipment or complicated operating steps, thereby improving the user's work efficiency.

[0048] In one embodiment, the outer housing barrel 3 is provided with a scale mark 32 , which is disposed close to the scale groove 31 and is used to point to the value of the first scale 21 or the second scale 22 .

[0049] Here, it can be understood that the rotating drive barrel 1 drives the scale ring 2 to rotate relative to the outer cover barrel 3. At this time, the scale mark 32 can point to the value on the scale exposed in the scale groove 31, thereby indicating the focus value of the optical lens.

[0050] It needs to be further explained that when the first scale 21 is exposed to the scale groove 31 , the scale mark 32 is used to point to the value on the first scale 21 ; and when the second scale 22 is exposed to the scale groove 31 , the scale mark 32 is used to point to the value on the second scale 22 .

[0051] By adopting the above technical solution, the user obtains the focus value of the optical lens.

[0052] Please also read Figure 4 In one embodiment, the outer cover barrel 3 is provided with two scale grooves 31, and the two scale grooves 31 are respectively located on both sides of the outer cover barrel 3, and the scale ring 2 is provided with two first scales 21 and two second scales 22, and the first scales 21 and the second scales 22 are alternately arranged along the axial direction of the scale ring 2, and the two scale grooves 31 respectively expose the corresponding first scales 21 when the first end 23 is connected to the outer cover barrel 3, and the two scale grooves 31 respectively expose the corresponding second scales 22 when the second end 24 is connected to the outer cover barrel 3.

[0053] Here, it can be understood that the two scale grooves 31 are respectively used by different users; for example, one of the users is a photographer and the other user is a focus puller, and the two users obtain the current focus value of the optical lens from different scale grooves 31 respectively; specifically, the outer cover barrel 3 is provided with two scale grooves 31, one of which is used by the photographer and the other is used by the focus puller; the two scale grooves 31 are respectively located on both sides of the outer cover barrel 3, and the scale ring 2 is provided with two first scales 21 and two second scales 22, and the two scale grooves 31 simultaneously expose two first scales 21 or two second scales 22.

[0054] By adopting the above technical solution, the scale grooves 31 on both sides of the outer cover barrel 3 can correspond to the exposed scales, which is beneficial for different users to obtain focus values ​​from different directions, thereby improving the functionality of the optical lens.

[0055] In one embodiment, the two scale grooves 31 are symmetrically arranged based on the center of the scale ring 2 .

[0056] Here, it can be understood that since the scale ring 2 makes the first end 23 or the second end 24 dock with the rotation drive barrel 1 by reversing its own direction, thereby realizing switching of different scales, therefore, when the outer cover barrel 3 is provided with two scale grooves 31 located on both sides, the two scale grooves 31 need to be arranged symmetrically based on the center of the scale, so that the first scale 21 and the second scale 22 on the scale ring 2 can still be correspondingly exposed in the scale grooves 31 when the scale ring 2 is reversed.

[0057] By adopting the above technical solution, the function of the two scale grooves 31 of the outer cover barrel 3 corresponding to the exposed scales respectively is achieved.

[0058] Please refer again Figure 2 In one embodiment, the scale ring 2 is provided with a long first connecting groove 25, and the first connecting groove 25 extends along the circumference of the scale ring 2. The rotation driving lens barrel 1 is provided with a first connecting hole 12 located in the groove length direction of the first connecting groove 25. A first connecting member is connected between the scale ring 2 and the rotation driving lens barrel 1. The first connecting member is used to connect any part of the first connecting groove 25 in the groove length direction and the first connecting hole 12, so that the scale ring 2 is fixedly connected to the rotation driving lens barrel 1.

[0059] Here, it can be understood that the scale ring 2 can be rotated to a preset angle relative to the rotationally driven lens barrel 1, so that the scale on the scale ring 2 can be adjusted according to actual needs; for example, the scale ring 2 is coaxially sleeved on the rotationally driven lens barrel 1, and the scale ring 2 is rotated around the axis of the rotationally driven lens barrel 1 to the target position. At this time, the first connecting hole 12 is aligned with a certain part of the first connecting groove 25 in the groove length direction, and the first connecting member is connected to the first connecting hole 12 and the first connecting groove 25 to achieve the connection between the scale ring 2 and the rotationally driven lens barrel 1.

[0060] By adopting the above technical solution, it is convenient for the scale ring 2 to adjust the relative rotation angle with the rotationally driven lens barrel 1 .

[0061] In one embodiment, the first scale 21 is a metric scale, and the second scale 22 is an English scale.

[0062] Here, it can be understood that the first scale 21 is a metric scale, that is, the measurement unit of the first scale 21 is a metric unit, and the second scale 22 is an English scale, that is, the measurement unit of the second scale 22 is an English unit.

[0063] By adopting the above technical solution, the optical lens can be switched between the metric scale and the imperial scale.

[0064] In one embodiment, the inner wall of the rotationally driven lens barrel 1 is provided with a driving thread 13 for driving the optical lens to move along the axial direction.

[0065] Here, it can be understood that the drive thread 13 extends in an axial spiral along the rotary drive barrel 1, and the optical lens is provided with a transmission thread that cooperates with the drive thread 13, so that the rotation of the rotary drive barrel 1 can drive the optical lens to move in the axial direction, thereby realizing the focusing and focusing of the optical lens.

[0066] By adopting the above technical solution, the function of rotating the lens barrel 1 to drive the optical lens to move for focusing is achieved.

[0067] In one embodiment, the focus scale switching device also includes a gear ring 4 coaxially arranged on the rotation driving lens barrel 1, and the gear ring 4 is provided with a first identification structure 41 for calibrating the scale ring 2, and the scale ring 2 is provided with a second identification structure 26 corresponding to the first identification structure 41.

[0068] Here, it can be understood that the gear ring 4 refers to an annular component used to drive the rotationally driven lens barrel 1 to rotate around the axis; wherein, the gear ring 4 is coaxially arranged on the rotationally driven lens barrel 1, and the gear ring 4 is used to drive the rotationally driven lens barrel 1 to rotate; a first identification structure 41 is provided on the gear ring 4, and the first identification structure 41 is used to calibrate the position of the scale ring 2, and the scale ring 2 is provided with a second identification structure 26, and when the second identification structure 26 is opposite to the first identification structure 41, it represents that the gear ring 4 and the rotationally driven lens barrel 1 are located at the correct position.

[0069] For example, the first identification structure 41 is located on the gear ring 4 as a reference mark when switching scales. The user can adjust the scale ring 2 to align the INF scale line on the second identification structure 26 (metric or imperial) with the factory identification point (first identification structure 41) to achieve switching.

[0070] By adopting the above technical solution, the user can calibrate when switching the metric and imperial scale rings 2 through the first identification structure 41 and the second identification structure 26 to achieve scale switching, thereby improving the accuracy and reliability of switching and ensuring the accuracy of focusing.

[0071] In one embodiment, the gear ring 4 is provided with a second elongated connecting groove 42, which extends along the circumference of the gear ring 4, and the rotation driving lens barrel 1 is provided with a second connecting hole 14 located in the groove length direction of the second connecting groove 42. A second connecting member is connected between the gear ring 4 and the rotation driving lens barrel 1, and the second connecting member is used to connect any part of the second connecting groove 42 in the groove length direction and the second connecting hole 14, so that the gear ring 4 is fixedly connected to the rotation driving lens barrel 1.

[0072] Here, it can be understood that the gear ring 4 can be rotated to a preset angle relative to the rotationally driven lens barrel 1, so that the gear ring 4 can adjust its position according to actual needs; for example, the gear ring 4 is coaxially sleeved on the rotationally driven lens barrel 1, and the gear ring 4 is rotated around the axis of the rotationally driven lens barrel 1 to the target position. At this time, the second connecting hole 14 is aligned with a certain part of the second connecting groove 42 in the groove length direction, and the second connecting member is connected to the second connecting hole 14 and the second connecting groove 42 to realize the connection between the gear ring 4 and the rotationally driven lens barrel 1.

[0073] By adopting the above technical solution, it is convenient for the gear ring 4 to adjust the relative rotation angle with the rotationally driven lens barrel 1 .

[0074] In a second aspect, an optical lens is provided, comprising an optical lens body and the above-mentioned focus scale switching device, wherein the focus scale switching device is mounted on the optical lens body.

[0075] By adopting the above technical solution, on the basis of having the advantages of the focus scale switching device of the above embodiment, the optical lens of this embodiment also has the advantage of being easy to switch between different system scales.

[0076] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A focus scale switching device, characterized in that: include: A rotationally driven lens barrel, a scale ring coaxially arranged with the rotationally driven lens barrel, and an outer cover lens barrel coaxially sleeved on the scale ring; wherein the rotationally driven lens barrel is used to drive the scale ring to rotate relative to the outer cover lens barrel; the scale ring is provided with a first scale of a first unit of measurement and a second scale of a second unit of measurement in sequence along its own axial direction, the scale ring is provided with a first end and a second end opposite to each other in its own axial direction, and the scale ring selectively enables the first end or the second end to dock with the rotationally driven lens barrel; the outer cover lens barrel is provided with a scale groove, the scale groove exposes the first scale when the first end docks with the rotationally driven lens barrel, and the scale groove exposes the second scale when the second end docks with the rotationally driven lens barrel.

2. The focus scale switching device according to claim 1, characterized in that: The outer cover lens barrel is provided with a scale mark, which is arranged close to the scale groove and is used to point to the value of the first scale or the second scale.

3. The focus scale switching device according to claim 1, characterized in that: The outer cover barrel is provided with two scale grooves, which are respectively located on both sides of the outer cover barrel, and the scale ring is provided with two first scales and two second scales, which are alternately arranged along the axial direction of the scale ring, and the two scale grooves respectively expose the corresponding first scales when the first end is docked with the outer cover barrel, and the two scale grooves respectively expose the corresponding second scales when the second end is docked with the outer cover barrel.

4. The focus scale switching device according to claim 3, characterized in that: The two scale grooves are arranged symmetrically based on the center of the scale ring.

5. The focus scale switching device according to claim 1, characterized in that: The scale ring is provided with a first long connecting groove, which extends along the circumference of the scale ring. The rotation driving barrel is provided with a first connecting hole located in the groove length direction of the first connecting groove. A first connecting member is connected between the scale ring and the rotation driving barrel. The first connecting member is used to connect any part of the first connecting groove in the groove length direction and the first connecting hole, so that the scale ring is fixedly connected to the rotation driving barrel.

6. The focus scale switching device according to any one of claims 1 to 5, characterized in that: The first scale is a metric scale, and the second scale is an English scale.

7. The focus scale switching device according to any one of claims 1 to 5, characterized in that: The inner wall of the rotation drive lens barrel is provided with a driving thread for driving the optical lens to move along the axial direction.

8. The focus scale switching device according to any one of claims 1 to 5, characterized in that: The focus scale switching device also includes a gear ring coaxially arranged on the rotation drive barrel, the gear ring is provided with a first identification structure for calibrating the scale ring, and the scale ring is provided with a second identification structure corresponding to the first identification structure.

9. The focus scale switching device according to claim 8, characterized in that: The gear ring is provided with a second elongated connecting groove, which extends along the circumference of the gear ring. The rotation driving barrel is provided with a second connecting hole located in the groove length direction of the second connecting groove. A second connecting member is connected between the gear ring and the rotation driving barrel. The second connecting member is used to connect any part of the second connecting groove in the groove length direction and the second connecting hole, so that the gear ring is fixedly connected to the rotation driving barrel.

10. An optical lens, characterized in that: It comprises an optical lens body and a focus scale switching device according to any one of claims 1 to 9, wherein the focus scale switching device is mounted on the optical lens body.

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