Vision adjusting mechanism of eyepiece and eyepiece

Abstract

The utility model provides an eyepiece diopter adjusting mechanism and eyepiece, relates to optical device technical field, diopter adjusting mechanism includes complete machine adapter, eyepiece lens barrel and diopter adjusting piece, complete machine adapter includes annular side wall, the side wall is provided with spacing groove, eyepiece lens barrel is provided in complete machine adapter, and the diopter adjusting piece is provided with spacing groove. Limiting grooves are formed in the eyepiece lens barrel, limiting pieces corresponding to the limiting grooves are arranged on the outer wall of the eyepiece lens barrel, the limiting pieces are arranged in the corresponding limiting grooves in a penetrating mode, the whole machine adapter is sleeved with the diopter adjusting piece, and the diopter adjusting piece is movably connected with the whole machine adapter and is in linkage connection with the limiting pieces which are arranged on the eyepiece lens barrel in a penetrating mode and arranged in the limiting grooves. When the diopter adjusting piece moves, the limiting piece is limited and guided by the limiting groove, and the diopter adjusting piece drives the limiting piece to drive the eyepiece barrel to synchronously move in the whole machine adapter along the axial direction of the whole machine adapter, so that the diopter of the eyepiece is adjusted, and the optical axis of the eyepiece does not rotate in the diopter adjusting process.

Description

Technical Field

[0001] The utility model relates to the technical field of optical devices, in particular to a diopter adjustment mechanism of an eyepiece and the eyepiece. Background Art

[0002] The eyepiece is a component used in optical instruments for observation. It is located at the end of the instrument, close to the observer's eye. Its primary function is to magnify the image produced by the instrument's objective lens or other optical system and present it to the observer. The eyepiece typically consists of a series of lenses that correct image aberrations, provide a clear field of view, and allow the user to observe directly. The eyepiece allows for user adjustment to accommodate differences in vision, ensuring clear and comfortable viewing for every user.

[0003] The existing eyepiece diopter adjustment mechanism mainly sets the adjustment thread directly on the eyepiece barrel, and the diopter is adjusted by rotating the barrel to move the eyepiece barrel. During the adjustment process, the optical axis of the barrel rotates, which affects the imaging effect and image quality. In addition, the axial dimension of the eyepiece diopter adjustment mechanism is large and cannot be applied to compact eyepieces. Utility Model Content

[0004] The purpose of the utility model is to provide a diopter adjustment mechanism for an eyepiece and an eyepiece, so as to solve the technical problems existing in the prior art of optical axis rotation and failure to meet the requirement of compact axial size of the eyepiece.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the present utility model is as follows:

[0006] A diopter adjustment mechanism for an eyepiece, comprising:

[0007] The whole machine adapter comprises an annular side wall, wherein the side wall is provided with at least one limiting groove;

[0008] An eyepiece barrel is provided in the whole machine adapter, and a limiting member corresponding to the limiting groove is provided on the outer wall of the eyepiece barrel, and the limiting member is passed through the corresponding limiting groove;

[0009] a diopter adjustment member, sleeved on the whole-machine adapter, movably connected to the whole-machine adapter, and linked to the limiting member on the eyepiece barrel that passes through the limiting groove;

[0010] When the diopter adjusting member moves and adjusts, the limiting groove restricts and guides the limiting member, so that the diopter adjusting member drives the limiting member and then drives the eyepiece barrel to move synchronously in the whole machine adapter along the axial direction of the whole machine adapter.

[0011] Furthermore, an annular groove is provided on the inner wall of the diopter adjustment member, and the annular groove is used to accommodate the end of the limiting slot on the limiting member. When the diopter adjustment member rotates, the annular groove cooperates with the limiting member to drive the eyepiece barrel to move axially along the entire machine adapter.

[0012] Furthermore, the limiting member is a limiting pin, one end of which is arranged in the pin hole on the outer wall of the eyepiece barrel, and the other end of the limiting pin is inserted through the limiting groove and then plugged into the annular groove set on the inner wall of the diopter adjustment member.

[0013] Furthermore, a plurality of the limiting grooves are provided on the side wall of the complete machine adapter, and the plurality of limiting grooves are arranged at intervals along the circumference of the complete machine adapter, and the limiting pins correspond to the limiting grooves one by one.

[0014] Furthermore, the diopter adjustment member includes a threaded adapter and a diopter adjustment handwheel, and the diopter adjustment handwheel is sleeved on the threaded adapter and is tightly connected to the threaded adapter;

[0015] An annular limit ring is convexly provided on the inner wall of the diopter adjustment hand wheel, and the gap between the annular limit ring and the thread adapter is used to form the annular groove. The inner wall of the thread adapter is provided with an internal thread, and the outer wall of the complete machine adapter is provided with an external thread matching the internal thread of the thread adapter.

[0016] Furthermore, a sealing ring is provided between the outer wall of the eyepiece barrel and the inner wall of the whole machine adapter, the outer wall of the eyepiece barrel is provided with an annular groove, and the sealing ring is provided in the annular groove.

[0017] Furthermore, the outer wall of the vision adjustment hand wheel is provided with a knurled structure.

[0018] An eyepiece, comprising the diopter adjustment mechanism of the eyepiece according to any one of the aforementioned embodiments, a lens assembly and a display screen arranged in the eyepiece barrel;

[0019] The lens group includes a plurality of lenses arranged along the axial direction, and a first pancake film is provided on the outermost lens;

[0020] The display screen is arranged at one end of the eyepiece barrel away from the outermost lens, and a second pancake film is arranged on the display screen.

[0021] Furthermore, the eyepiece further includes a silicone eye mask and an eye mask adapter for connecting the silicone eye mask to the eyepiece barrel, wherein the eye mask adapter is provided at an end of the eyepiece barrel away from the display screen;

[0022] A mutually connected snap-fit ​​structure is provided between the eye mask adapter and the silicone eye mask.

[0023] Furthermore, the lens group includes a negative meniscus lens, a biconvex lens and a plano-convex lens arranged in sequence along the axial direction, the biconvex lens and the plano-convex lens are separated by a first spacer, and the negative meniscus lens and the biconvex lens are separated by a second spacer.

[0024] Furthermore, an annular pressure ring is provided on the inner wall of the eye mask adapter, and the annular pressure ring is used to press the plano-convex lens in the eyepiece barrel.

[0025] Furthermore, a transfer thread is provided at the bottom of the whole machine adapter for mounting the eyepiece on the sight.

[0026] Compared with the prior art, the embodiments of the present invention have at least the following technical effects:

[0027] The diopter adjustment mechanism of the eyepiece provided in the above embodiment is that the eyepiece barrel is arranged in the complete machine adapter, the side wall of the complete machine adapter is provided with a limiting groove, the outer wall of the eyepiece barrel is provided with a limiting member, and after the limiting member is inserted into the limiting groove, the limiting groove limits the eyepiece barrel connected to the limiting member from rotating around its own axis, and the eyepiece barrel can move along the self-axis direction in the complete machine adapter, and the limiting groove limits the moving stroke of the limiting member, thereby limiting the moving stroke of the eyepiece barrel in the complete machine adapter, that is, the eyepiece barrel is adjusted to a set diopter range in the complete machine adapter through the coordinated use of the limiting groove and the limiting member, and the diopter adjustment member is sleeved on the complete machine adapter, and the diopter adjustment member and the complete machine adapter are connected. Active connection, during the diopter adjustment process, through the cooperation of the limit grooves and the limit members respectively provided on the whole machine adapter and the eyepiece barrel, and the linkage connection between the limit member passing through the eyepiece barrel and the diopter adjustment member, the eyepiece barrel is restricted from rotating during the movement adjustment of the diopter adjustment member, so that the eyepiece optical axis does not rotate, and the movement of the diopter adjustment member drives the limit member and then drives the eyepiece barrel to move synchronously along the axial direction of the whole machine adapter in the whole machine adapter, thereby completing the adjustment of the axial movement of the eyepiece. Compared with the known diopter adjustment mechanism, it can reduce the occupation of the axial space of the eyepiece, simplify the axial size of the eyepiece, and meet the requirement of compact axial size of the eyepiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a cross-sectional view of an eyepiece in one embodiment;

[0029] Figure 2 1 is an exploded view of the eyepiece in one embodiment.

[0030] Description of Figure Numbers:

[0031] 1. Adapter for the entire device; 2. Limiting groove; 3. Eyepiece barrel; 4. Sealing ring; 5. Limiting piece; 6. Annular groove; 7. Threaded adapter; 8. Diopter adjustment handwheel; 9. Annular limiting ring; 10. Plano-convex lens; 11. First pancake film; 12. Display screen; 13. Second pancake film; 14. Silicone eye mask; 15. Eye mask adapter; 16. First spacer; 17. Second spacer; 18. Annular pressure ring; 19. Negative meniscus lens; 20. Biconvex lens; 21. Diopter adjustment piece; 22. Install the control line. DETAILED DESCRIPTION

[0032] The following is a further detailed description of the technical solution of the present invention in conjunction with the accompanying drawings and specific embodiments of the specification. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. In the following description, reference is made to "some embodiments", which describes a subset of all possible embodiments, but it should be understood that "some embodiments" may be the same subset or different subsets of all possible embodiments, and may be combined with each other without conflict.

[0033] It should also be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "inner," "outer," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0034] Currently known eyepiece diopter adjustment mechanisms mainly set the adjustment thread directly on the eyepiece barrel, and the diopter is adjusted by rotating the barrel to move the eyepiece barrel. During the adjustment process, the optical axis of the barrel rotates. The transmission of this adjustment mechanism does not require a complex transmission structure in the axial direction, but the rotation of the optical axis of the barrel may affect the imaging effect, especially for eyepieces that use polarizing optical elements such as polarizers and wave plates. The rotation of the optical axis will affect the imaging quality.

[0035] In view of this, the inventors of the present application proposed the following technical concept: "After the limit member is inserted into the limit groove, the limit groove restricts the eyepiece barrel connected to the limit member from rotating around its own axis, and limits the movement stroke of the limit member, thereby limiting the movement stroke of the eyepiece barrel in the whole machine adapter; the diopter adjustment member is movably connected to the whole machine adapter, and is linked to the limit member provided on the eyepiece barrel in the limit groove; when the diopter adjustment member moves, the limit groove restricts and guides the limit member, and the diopter adjustment member drives the limit member and then drives the eyepiece barrel to move synchronously in the whole machine adapter along the axial direction of the whole machine adapter to complete the adjustment of the diopter of the eyepiece." The technical solution based on this technical concept is described in detail in the specific embodiments below.

[0036] See also Figure 1 as well as Figure 2 In one embodiment of the present invention, a diopter adjustment mechanism for an eyepiece is provided, comprising a complete adapter 1, an eyepiece barrel 3, and a diopter adjustment member 21. The complete adapter 1 includes an annular sidewall with a retaining groove 2 defined therein. The eyepiece barrel 3 is disposed within the complete adapter 1. Retaining members 5 corresponding to the retaining grooves 2 are disposed on the outer wall of the eyepiece barrel 3 and are inserted into the corresponding retaining grooves 2. Optionally, one or more retaining grooves 2 may be configured as desired, without limitation herein. The diopter adjustment member 21 is sleeved on the whole machine adapter 1, and the diopter adjustment member 21 and the whole machine adapter 1 are matched by threads (in this embodiment, the movable connection between the diopter adjustment member 21 and the whole machine adapter 1 is through thread matching. In other embodiments, the movable connection between the diopter adjustment member 21 and the whole machine adapter 1 can also be selected in other ways, which can be determined according to the actual needs of the product and is not limited here, as long as the diopter adjustment member 21 can be moved relative to the whole machine adapter 1), and the diopter adjustment member 21 and the eyepiece lens are connected. The limiting member 5 on the tube 3 is inserted into the limiting groove 2 and is linked to each other. When the diopter adjusting member 21 is rotated for adjustment, the diopter adjusting member 21 moves up and down on the outside of the whole machine adapter 1 by changing the number of threads, and then the diopter adjusting member 21 can drive the limiting member 5 and the limiting member 5 moves axially along the axial direction of the whole machine adapter under the restriction of the limiting groove 2. Thus, the diopter adjusting member 21 drives the eyepiece barrel 3 to move synchronously along the axial direction of the whole machine adapter 1 on the inside of the whole machine adapter 1 through the limiting member 5 to complete the diopter adjustment of the eyepiece.

[0037] The diopter adjustment mechanism of the eyepiece provided in the above embodiment is that the eyepiece barrel 3 is arranged in the complete machine adapter 1, the side wall of the complete machine adapter 1 is provided with a limit groove 2, the outer wall of the eyepiece barrel 3 is provided with a limit member 5, and after the limit member 5 is inserted into the limit groove 2, the limit groove 2 limits the eyepiece barrel 3 connected to the limit member 5 from rotating around its own axis and limits the movement stroke of the limit member 5, thereby limiting the movement stroke of the eyepiece barrel 3 in the complete machine adapter 1, and the diopter adjustment member 21 is sleeved on the complete machine adapter 1, and the diopter adjustment member 21 is connected to the complete machine adapter. Part 1 is engaged by threads. During the diopter adjustment process, the limiting groove 2 and the limiting member 5 cooperate with each other, and the limiting member 5 is used to pass through the eyepiece barrel 3 and then be linked to the diopter adjustment member 21. When the diopter adjustment member 21 is rotated and adjusted, the diopter adjustment member drives the eyepiece barrel to move synchronously along the axial direction of the whole machine adapter within the whole machine adapter through the limiting member 5. The eyepiece barrel 3 is restricted from rotating, so that the optical axis of the eyepiece does not rotate. Compared with the known adjustment mechanism, the axial space occupied by the eyepiece can be reduced, and the axial size of the eyepiece can be simplified.

[0038] See also Figure 1 as well as Figure 2 As shown, in some embodiments, an annular groove 6 is provided on the inner wall of the diopter adjustment member 21, and the annular groove 6 accommodates the end of the limiting groove 2 on the limiting member 5, that is, the diopter adjustment member 21 is linked to the limiting member 5, and the diopter adjustment member 21 is matched with the whole machine adapter 1 through a thread. When the diopter adjustment member 21 rotates, the diopter adjustment member 21 can move forward and backward along its axial direction relative to the whole machine adapter 1, and the limiting member 5 is inserted into the annular groove 6. The two oppositely arranged groove walls of the annular groove 6 of the diopter adjustment member 21 can push the limiting member 5 to move along the limiting groove, so as to drive the eyepiece barrel 3 to move synchronously to complete the adjustment of the diopter of the eyepiece. When the diopter adjustment member 21 rotates to adjust the diopter, the groove wall of the annular groove 6 pushes the limiting member 5 and the annular groove 6 of the diopter adjustment member 21 can rotate relative to the limiting member 5.

[0039] like Figure 1 as well as Figure 2 As shown, in some embodiments of the present invention, a sealing ring 4 is provided between the outer wall of the eyepiece barrel 3 and the inner wall of the whole device adapter 1. The outer wall of the eyepiece barrel 3 is provided with an annular groove, and the sealing ring 4 is disposed within the annular groove. By squeezing the sealing ring 4, the interior of the eyepiece is isolated from the external environment, preventing moisture, dust, and humid air from entering the eyepiece, thus providing protection.

[0040] like Figure 1 as well as Figure 2As shown, in some embodiments of the present invention, the stopper 5 is a stopper pin. One end of the stopper pin is positioned within a pin hole in the outer wall of the eyepiece barrel 3. The other end of the stopper pin passes through the stopper slot 2 and engages with an annular groove 6 provided on the inner wall of the diopter adjustment member 21. The stopper slot 2 restricts and guides the stopper pin, allowing the eyepiece barrel 3 to move synchronously along the stopper slot 2 within the adapter 1 along the axis to achieve eyepiece diopter adjustment. While the stopper pin is restricted and guided by the stopper slot 2, it also acts as an arm, exerting a driving force from the diopter adjustment member 21 to move the eyepiece barrel 3.

[0041] The eyepiece barrel 3 is moved within the adapter 1 within a fixed distance through the use of the limit slot 2 and the limit pin. This distance is the diopter adjustment distance, which is determined by the focal length of the eyepiece assembly and the target diopter adjustment range. For example, if the eyepiece focal length is 27.37mm and the desired diopter adjustment range is -5D to +4D, first calculate the focus adjustment amount corresponding to one diopter:

[0042] X=f^2 / 1000=27.37^2 / 1000≈0.749mm;

[0043] That is, to change one diopter, the amount of movement of the front focus of the eyepiece is 0.749mm;

[0044] Then the diopter adjustment range of -5D to +4D needs to change 9 diopters, and the movement of the eyepiece to the front focus is 6.741mm, that is, the length of the limit slot 2 should be 6.741mm, of which the upper end of 2.996mm is the positive diopter adjustment range, and the positive diopter increases as the eyepiece moves upward; the lower end of 3.745mm is the negative diopter adjustment range, and the negative diopter increases as the eyepiece moves downward.

[0045] like Figure 1 as well as Figure 2 As shown, in some embodiments of the present invention, the side wall of the complete device adapter 1 is provided with four limiting grooves 2, which are spaced apart along the circumference of the complete device adapter 1, and the limiting pins correspond one to one with the limiting grooves 2. The specific number of limiting grooves 2 can be determined according to the actual product requirements and is not limited here.

[0046] like Figure 1 as well as Figure 2 As shown, in some embodiments of the present invention, the diopter adjustment member 21 includes a threaded adapter 7 and a diopter adjustment handwheel 8. The diopter adjustment handwheel 8 is sleeved on the threaded adapter 7 and is tightly connected to the threaded adapter 7. The inner wall of the diopter adjustment handwheel 8 is convexly provided with an annular limiting ring 9. The gap between the annular limiting ring 9 and the threaded adapter 7 is used to form an annular groove 6. The inner wall of the threaded adapter 7 is provided with an internal thread, and the outer wall of the whole machine adapter 1 is provided with an external thread that matches the internal thread of the threaded adapter 7. In the extreme adjustment position of the diopter adjustment member 21 (such as Figure 1(as shown), the number of threads between the threaded adapter 7 and the complete adapter 1 is controlled to no less than three to prevent damage from large impacts. The tightness of the threaded fit between the threaded adapter 7 and the complete adapter 1 is achieved through precise tolerance control. A moderate amount of grease is applied during installation to reduce friction and enhance adjustment feel. The rotation angle of the diopter adjustment handwheel 8 is set to approximately 360 degrees to ensure a full operating cycle for diopter adjustment. To account for wall thickness limitations, the pitch of the internal threads of the threaded adapter 7 and the external threads of the complete adapter 1 is 1mm, and multiple threads are used. The external thread of the threaded adapter 7 and the internal thread of the diopter adjustment hand wheel 8 are matched, and the matching part is fixed with glue. The two parts form the diopter adjustment part 21. Through the restriction and guidance of the limiter 5 by the limiter slot 2, the diopter adjustment part 21 applies a moving driving force to the eyepiece barrel 3 through the limiter 5, so that the eyepiece barrel 3 moves synchronously along the axial direction along the limiter slot 2 in the whole machine adapter 1 to complete the eyepiece diopter adjustment. In addition, an installation control line is set, and the installation surface of the whole machine should be controlled below the installation control line 22 to ensure that the travel of the diopter adjustment hand wheel 8 when adjusted downward reaches the designed maximum negative diopter (such as Figure 1 shown).

[0047] like Figure 1 as well as Figure 2 As shown, in some embodiments of the present invention, the outer wall of the diopter adjustment hand wheel 8 is provided with a knurled structure to improve the adjustment feel.

[0048] like Figure 1 as well as Figure 2 As shown, on the other hand, the present invention further provides an eyepiece, comprising the diopter adjustment mechanism of the eyepiece of any of the aforementioned embodiments, a lens group disposed in the eyepiece barrel 3, and a display screen 12, wherein the lens group includes a plurality of lenses arranged along the axial direction, a first pancake film 11 is disposed on the outermost lens, and the display screen 12 is disposed at an end of the eyepiece barrel 3 away from the outermost lens, and a second pancake film 13 is disposed on the display screen 12. The first pancake film 11 and the second pancake film 13 can fold and selectively transmit the outgoing light of the display screen 12, thereby shortening the optical path size. Specifically, the display screen 12 is a high-brightness screen, which is composed of a 1 / 4 wave plate, a polarizing reflective film, and a linear polarizer. The first pancake film 11 covers the plane side of the plano-convex lens 10, and the second pancake film 13, which is composed of a linear polarizer, a 1 / 4 wave plate, and a semi-transparent and semi-reflective mirror, covers the surface of the high-brightness display screen 12.

[0049] like Figure 1 as well as Figure 2As shown, in one embodiment, the eyepiece further includes a silicone eyecup 14 and an eyecup adapter 15 for connecting the silicone eyecup 14 to the eyepiece barrel 3. The eyecup adapter 15 is disposed at the end of the eyepiece barrel 3 away from the display screen 12. A snap-fit ​​structure is provided between the eyecup adapter 15 and the silicone eyecup 14. Specifically, the annular snap-fit ​​groove of the silicone eyecup 14 snaps into engagement with the annular snap-fit ​​disk of the eyecup adapter 15, ensuring a secure connection and preventing the silicone eyecup 14 from falling off.

[0050] like Figure 1 as well as Figure 2 As shown, in one embodiment, the lens assembly includes a negative meniscus lens 19, a biconvex lens 20, and a plano-convex lens 10 arranged in sequence along the axial direction. The biconvex lens 20 and the plano-convex lens 10 are separated by a first spacer 16, and the negative meniscus lens 19 and the biconvex lens 20 are separated by a second spacer 17. The first spacer 16 and the second spacer 17 separate the different lenses to maintain predetermined relative positions.

[0051] like Figure 1 as well as Figure 2 As shown, in one embodiment, an annular pressure ring 18 is provided on the inner wall of the eyecup adapter 15. The annular pressure ring 18 is used to press the plano-convex lens 10 in the eyepiece barrel 3. Specifically, the eyecup adapter 15 and the eyepiece barrel 3 are engaged with each other through threads. By twisting the eyecup adapter 15, the annular pressure ring 18 is pressed against the plano-convex lens 10, and the eyecup adapter 15 also functions as a pressure ring.

[0052] In one embodiment, a transfer thread is provided at the bottom of the whole device adapter 1 for mounting the eyepiece on the sight.

[0053] The diopter adjustment mechanism of the eyepiece and the eyepiece provided in this embodiment have at least the following technical effects:

[0054] 1. During the rotation adjustment process of the diopter adjustment member, the eyepiece barrel moves axially along the limit slot, the eyepiece barrel is restricted and does not rotate, the eyepiece optical axis does not rotate, and the imaging quality is stable;

[0055] 2. Compared with the existing mechanism that includes an arm design with an axial arrangement of the eyepiece, this can reduce the axial space occupied by the eyepiece, allowing the addition of a sunshade in a compact longitudinal space and compatibility with gun sight products;

[0056] 3. By squeezing the O-ring, the internal and external environments of the scope can be isolated, preventing moisture, dust and humid air from entering the scope, playing a protective role. In addition, during the diopter adjustment process, the sealing ring is always in a compressed state between the eyepiece barrel and the whole machine adapter, and the sealing process is always effective.

[0057] 4. When the threads of the thread adapter and the complete machine adapter are matched, the tightness of the thread fit is achieved through precise tolerance control. At the same time, an appropriate amount of grease is applied during the installation process to ensure a smooth operation.

[0058] The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited to them. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this utility model should be included in the scope of protection of the present utility model. The scope of protection of the present utility model should be based on the scope of protection of the claims.

Claims

1. A diopter adjustment mechanism for an eyepiece, characterized in that: include: The complete machine adapter (1) comprises an annular side wall, wherein the side wall is provided with at least one limiting groove (2); An eyepiece barrel (3) is arranged in the whole machine adapter (1); a limiting member (5) corresponding to the limiting groove (2) is arranged on the outer wall of the eyepiece barrel (3); the limiting member (5) is inserted into the corresponding limiting groove (2); A diopter adjusting member (21) is sleeved on the whole machine adapter (1), the diopter adjusting member (21) is movably connected to the whole machine adapter (1), and is linked to the limiting member (5) on the eyepiece barrel (3) and is provided in the limiting groove (2); When the diopter adjusting member (21) is moved and adjusted, the limiting member (5) is restricted and guided by the limiting groove (2), so that the diopter adjusting member drives the limiting member (5) and further drives the eyepiece barrel (3) to move synchronously along the axial direction of the whole machine adapter (1) within the whole machine adapter (1).

2. The diopter adjustment mechanism of the eyepiece according to claim 1, characterized in that: An annular groove (6) is provided on the inner wall of the diopter adjusting member (21), and the annular groove (6) is used to accommodate the end portion of the limiting groove (2) on the limiting member (5). When the diopter adjusting member (21) rotates, the annular groove (6) cooperates with the limiting member (5) to drive the eyepiece barrel (3) to move axially along the entire machine adapter (1).

3. The diopter adjustment mechanism of the eyepiece according to claim 2, characterized in that: The limiting member (5) is a limiting pin, one end of which is arranged in a pin hole on the outer wall of the eyepiece barrel (3), and the other end of which is inserted through the limiting groove (2) and then plugged into the annular groove (6) provided on the inner wall of the diopter adjusting member (21).

4. The diopter adjustment mechanism of the eyepiece according to claim 3, characterized in that: The side wall of the complete machine adapter (1) is provided with a plurality of limiting grooves (2), the plurality of limiting grooves (2) are arranged at intervals along the circumference of the complete machine adapter (1), and the limiting pins correspond to the limiting grooves (2) one by one.

5. The diopter adjustment mechanism of the eyepiece according to claim 2, characterized in that: The vision adjustment member (21) comprises a threaded adapter (7) and a vision adjustment hand wheel (8), wherein the vision adjustment hand wheel (8) is sleeved on the threaded adapter (7) and is tightly connected to the threaded adapter (7); An annular limiting ring (9) is convexly provided on the inner wall of the vision adjustment hand wheel (8), and a gap between the annular limiting ring (9) and the thread adapter (7) is used to form the annular groove (6). The inner wall of the thread adapter (7) is provided with an internal thread, and the outer wall of the complete machine adapter (1) is provided with an external thread matching the internal thread of the thread adapter (7).

6. The diopter adjustment mechanism of the eyepiece according to claim 1, characterized in that: A sealing ring (4) is provided between the outer wall of the eyepiece barrel (3) and the inner wall of the complete machine adapter (1); an annular groove is provided on the outer wall of the eyepiece barrel (3), and the sealing ring (4) is provided in the annular groove.

7. The diopter adjustment mechanism of the eyepiece according to claim 5, characterized in that: The outer wall of the vision adjustment hand wheel (8) is provided with a knurling structure.

8. An eyepiece, characterized in that: It comprises the diopter adjustment mechanism of the eyepiece according to any one of claims 1 to 7, a lens group and a display screen (12) arranged in the eyepiece barrel (3); The lens group comprises a plurality of lenses arranged along the axial direction, and a first pancake film (11) is provided on the outermost lens; The display screen (12) is arranged at an end of the eyepiece barrel (3) away from the outermost lens, and a second pancake film (13) is provided on the display screen (12).

9. The eyepiece according to claim 8, wherein The eyepiece further comprises a silicone eye mask (14) and an eye mask adapter (15) for connecting the silicone eye mask (14) to the eyepiece barrel (3), wherein the eye mask adapter (15) is arranged at an end of the eyepiece barrel (3) away from the display screen (12); A mutually connected snap-fit ​​structure is provided between the eye mask adapter (15) and the silicone eye mask (14).

10. The eyepiece according to claim 9, wherein: The lens group comprises a negative meniscus lens (19), a biconvex lens (20) and a plano-convex lens (10) arranged in sequence along the axial direction; the biconvex lens (20) and the plano-convex lens (10) are separated by a first spacer (16); and the negative meniscus lens (19) and the biconvex lens (20) are separated by a second spacer (17).

11. The eyepiece according to claim 10, wherein: An annular pressing ring (18) is provided on the inner wall of the eye mask adapter (15), and the annular pressing ring (18) is used to press the plano-convex lens (10) in the eyepiece barrel (3).

12. The eyepiece according to claim 8, wherein The bottom of the whole machine adapter (1) is provided with an adapter thread for mounting the eyepiece on the sight.

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