Eyepiece and night vision device

Abstract

The present application provides an eyepiece device and a night vision device. The eyepiece device includes: a shell, a lens barrel and a diopter adjustment mechanism. The lens barrel includes two barrel bodies arranged in pairs and at an angle, and the barrel bodies are provided with a first guide groove along their respective axial directions; the diopter adjustment mechanism includes a lens, a movable sleeve, a movable slider, a guide member, and an operating member. The lens is mounted on the movable sleeve, and the movable sleeve is movably arranged in the barrel body. The movable slider is located between the barrel body and the shell and is provided with a second guide groove. The first end of the guide member is connected to the movable sleeve, and the second end of the guide member is passed through the first guide groove and extends into the second guide groove. The operating member is rotatably restricted on the shell and connected to the movable slider through an external thread structure; the operating member is rotated to make the operating member and the movable slider move relative to each other, and the movable sleeve is driven to move by the guide member moving along the first guide groove. In this way, the diopter of the eyepiece device can be continuously adjusted, and the operation is simple and convenient.

Description

Technical Field

[0001] The present application relates to the technical field of night vision devices, and in particular to an eyepiece device and a night vision device. Background Art

[0002] Current night vision goggles, classified by eye, usually include monocular night vision goggles and binocular night vision goggles; classified by tube, usually include monocular night vision goggles, binocular night vision goggles, quad-tube night vision goggles, etc. Among them, quad-tube binocular night vision goggles have been widely used in situations that require binocular observation and more accurate depth perception.

[0003] However, current four-barrel binocular night vision devices usually use fixed diopter or replace diopter lenses for diopter adjustment. Since the process of replacing diopter lenses is cumbersome, different users need to replace lenses of different degrees when observing, making the four-barrel binocular night vision device very inconvenient to use. Summary of the invention

[0004] A series of simplified concepts are introduced in the Summary of the Invention, which will be further described in detail in the Detailed Description of the Invention. This part of the application does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the scope of protection of the claimed technical solution.

[0005] In a first aspect of the present application, an eyepiece device is provided, comprising: a shell; a lens barrel, which is installed inside the shell, the lens barrel comprising two barrel bodies which are arranged in pairs and at an angle along a first direction, and the barrel bodies are provided with first guide grooves along their respective axial directions; a diopter adjustment mechanism, comprising a lens, a movable sleeve, a movable slider, a guide member, and an operating member, the lens being installed on the movable sleeve, the movable sleeve corresponding to the barrel body and movably arranged in the barrel body, the movable slider being located between the barrel body and the shell, and being provided with a second guide groove along the first direction, the first end of the guide member being connected to the movable sleeve, the second end of the guide member being passed through the first guide groove and extending into the second guide groove, the guide member being configured to be movable in the first guide groove and the second guide groove, the operating member being rotatably restricted on the shell, and the operating member being further connected to the movable slider via an external thread structure; wherein the operating member is rotated to make the operating member and the movable slider move relative to each other, and the movable sleeve is driven to move by the guide member moving along the first guide groove.

[0006] Furthermore, the operating part includes an external thread structure, a limiting portion, and an operating portion arranged in sequence along the axial direction. The external thread structure is located inside the shell and is connected to the movable slider. The limiting portion is located inside the shell and is rotatably limited by the shell. The operating portion is located outside the shell.

[0007] Furthermore, the limiting portion includes an annular groove opened along the circumference of the operating member, and a limiting member is provided or installed inside the shell, and the limiting member extends into the annular groove and can move in the annular groove.

[0008] Furthermore, the limiting member includes a limiting screw, the shell is provided with a first threaded hole, and the limiting screw is connected to the shell through the first threaded hole.

[0009] Furthermore, the shell includes a first shell and a second shell which are detachably connected and distributed in a direction perpendicular to the first direction. The lens barrel is installed in a space enclosed by the first shell and the second shell. The operating part is located outside the second shell, the limiting part is limited inside the second shell, and the external thread structure is located inside the first shell; wherein, the first shell and the second shell are respectively provided with a first convex groove and a second convex groove protruding outward at the ends adjacent to each other, the first convex groove and the second convex groove are connected, and enclosed with the barrel body to form an avoidance space for avoiding the moving slider.

[0010] Further, the second guide groove includes two sub-guide grooves corresponding to the guide members, and the two sub-guide grooves are distributed along the first direction; wherein the length of the sub-guide groove is equal to or greater than the length of the first guide groove.

[0011] Furthermore, a second threaded hole is provided on the outer wall of the movable sleeve, and the guide member is a guide screw, which is connected to the movable sleeve through the second threaded hole.

[0012] Furthermore, the diopter adjustment mechanism also includes a pressure ring, which is located at one end of the lens, and the inner wall of the movable sleeve is provided with a slot, and the pressure ring is connected to the inner wall of the movable sleeve to clamp the lens in the slot; wherein the lens is configured as a concave lens or a convex lens.

[0013] Furthermore, along the axial direction of the cylinder body, the inner wall of the movable sleeve is provided with a thread structure behind the clamping groove, and the pressure ring is connected to the movable sleeve through the thread structure.

[0014] A second aspect of the present application provides a night vision device, comprising: a middle bridge; and the eyepiece device of any one of the first aspects, wherein two eyepiece devices are connected to the middle bridge.

[0015] The eyepiece device and night vision device provided by the embodiment of the present application include a housing, a lens barrel and a diopter adjustment mechanism. The lens barrel is installed inside the housing, and the lens barrel includes two barrel bodies arranged at an angle, so that the eyepiece device is a binocular structure. The lens of the diopter adjustment mechanism is installed on a movable sleeve, and the two movable sleeves are respectively movably arranged in the corresponding barrel bodies. The movable slider is located between the barrel body and the housing, and the movable slider is provided with a second guide groove along a first direction, and the barrel body is provided with a first guide groove along each axial direction. The first end of the guide member is connected to the movable sleeve, and the second end of the guide member is penetrated through the first guide groove and extends into the second guide groove. The guide member is configured to be movable in the first guide groove and the second guide groove, so that the relative movement of the movable sleeve, the barrel body, and the movable slider is restricted by the guide member. Since the operating member is rotatably restricted on the housing, the operating member is also connected to the movable slider through an external thread structure. Therefore, by rotating the operating member, the operating member and the movable slider can be moved relative to each other, and the movable sleeve can be driven forward or backward relative to the shell through the guide member, thereby making the lens installed on the movable sleeve move forward or backward relative to the shell, so as to realize continuous adjustment of the diopter of the eyepiece device, and can simultaneously realize continuous adjustment of the diopter of the two tube bodies. The operation is simple, the use is convenient, the structure is simple, and it is easy to realize, which is suitable for popularization and application.

[0016] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. In addition, the same reference symbols are used throughout the accompanying drawings to represent the same components. Among them:

[0018] Figure 1 A schematic structural diagram of an eyepiece device according to an optional embodiment of the present application is shown;

[0019] Figure 2 A cross-sectional view showing one viewing angle of an eyepiece device of an optional embodiment of the present application;

[0020] Figure 3 A partial cross-sectional view showing another perspective of an eyepiece device of an optional embodiment of the present application

[0021] Figure 4 A cross-sectional view showing a partial structure of an eyepiece device of an optional embodiment of the present application at another viewing angle;

[0022] Figure 5 A cross-sectional view showing a partial structure of an eyepiece device of another optional embodiment of the present application at another viewing angle;

[0023] Figure 6 A schematic structural diagram showing a viewing angle of a night vision device according to an optional embodiment of the present application is shown;

[0024] Figure 7 A schematic structural diagram showing another viewing angle of a night vision device according to an optional embodiment of the present application;

[0025] Figure 8 A structural schematic diagram showing another viewing angle of a night vision device according to an optional embodiment of the present application is shown.

[0026] in, Figures 1 to 8 The corresponding relationship between the reference numerals and the component names is as follows:

[0027] 100 eyepiece device, 110 shell, 111 first shell, 1111 first convex groove, 112 second shell, 1121 second convex groove, 113 limiter, 114 connecting screw, 120 lens barrel, 121 first barrel body, 122 second barrel body, 123 first guide groove, 130 diopter adjustment mechanism, 140 lens, 150 movable sleeve, 151 slot, 152 second threaded hole, 160 movable slider, 161 second guide groove, 162 first sub-guide groove, 163 second sub-guide groove, 170 guide member, 180 operating member, 181 external thread structure, 182 annular groove, 183 operating part, 190 pressure ring, 200 night vision device, 210 middle bridge, 220 connecting seat. DETAILED DESCRIPTION

[0028] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0029] Refer to the following Figures 1 to 8 The eyepiece device 100 and the night vision device 200 provided according to some embodiments of the present application are described, wherein the eyepiece device 100 is applied to the night vision device 200, and the night vision device 200 can be a four-tube binocular night vision device or other night vision device that meets the requirements.

[0030] like Figure 1 , Figure 2 and Figure 3As shown, an embodiment of the first aspect of the present application provides an eyepiece device 100, comprising: a housing 110; a lens barrel 120, the lens barrel 120 is installed inside the housing 110, the lens barrel 120 comprises two barrel bodies arranged in pairs and at an angle along a first direction, and the barrel bodies are provided with first guide grooves 123 along their respective axial directions; a diopter adjustment mechanism 130 comprises a lens 140, a movable sleeve 150, a movable slider 160, a guide member 170, and an operating member 180, the lens 140 is installed on the movable sleeve 150, the movable sleeve 150 corresponds to the barrel body and is movably arranged in the barrel body, and the movable slider 160 is located between the barrel body and the housing 110 The first end of the guide member 170 is connected to the movable sleeve 150, and the second end of the guide member 170 is passed through the first guide groove 123 and extends into the second guide groove 161. The guide member 170 is configured to be movable in the first guide groove 123 and the second guide groove 161. The operating member 180 is rotatably restricted on the housing 110, and the operating member 180 is also connected to the movable slider 160 through an external thread structure 181; wherein, the operating member 180 is rotated to make the operating member 180 and the movable slider 160 move relative to each other, and the movable sleeve 150 is driven to move by the guide member 170 moving along the first guide groove 123.

[0031] The eyepiece device 100 provided in the embodiment of the present application includes a housing 110, a lens barrel 120 and a diopter adjustment mechanism 130. The lens barrel 120 is installed inside the housing 110. The lens barrel 120 includes two barrel bodies arranged at an angle, so that the eyepiece device 100 is a double barrel structure. The lens 140 of the diopter adjustment mechanism 130 is installed on a movable sleeve 150. The two movable sleeves 150 are respectively movably arranged in corresponding barrel bodies, so that the lens 140 can move with the movement of the movable sleeve 150 relative to the barrel body. The movable slider 160 is located between the barrel body and the housing 110. The movable slider 160 is provided with a second guide groove 161 along the first direction. The barrel body is provided with a first guide groove 123 along the respective axial directions. The movable slider 160 is connected to the movable sleeve 150 through the first end of the guide member 170. The second end of the guide member 170 is passed through the first guide groove 123 and extends into the second guide groove 161. The guide member 170 is configured to be movable in the first guide groove 123 and the second guide groove 161, so that the relative movement of the movable sleeve 150, the barrel body, and the movable slider 160 is restricted by the guide member 170. Since the operating member 180 is rotatably restricted on the housing 110, the operating member 180 is also connected to the movable slider 160 through the external thread structure 181. Therefore, by rotating the operating member 180, the operating member 180 and the movable slider 160 can move relative to each other. Since the operating member 180 is restricted on the shell 110, the movable slider 160 can move forward or backward along the operating member 180. Since the guide member 170 is restricted in the second guide groove 161 of the movable slider 160 and in the first guide groove 123 of the barrel body, and at the same time, the guide member 170 is also connected to the movable sleeve 150, therefore, the movable slider 160 moves forward or backward along the operating member 180, which can drive the movable sleeve 150 to move forward or backward relative to the shell 110, and then the lens 140 installed on the movable sleeve 150 moves forward or backward relative to the shell 110, so as to realize continuous adjustment of the diopter of the eyepiece device 100, and can realize continuous adjustment of the diopter of the two barrel bodies at the same time. The operation is simple, the use is convenient, and the structure is simple and easy to realize. Compared with the related art that adopts a fixed diopter to make the diopter single, the eyepiece device of the embodiment of the present application can meet the different diopter needs of different observers and expand the scope of use. Compared with the related art that adopts the method of replacing the diopter lens to adjust the diopter, the diopter adjustment operation is simple, easy to use, and can achieve continuous adjustment of the diopter. Therefore, the versatility and convenience of the eyepiece device 100 are improved, and it is suitable for popularization and application.

[0032] The lens barrel 120 is installed inside the housing 110 , so that the housing 110 can provide good protection for the lens barrel 120 , thereby extending the service life of the lens barrel 120 .

[0033] Among them, Figure 1 and Figure 2As shown, the lens barrel 120 includes two barrel bodies, such as the barrel body includes a first barrel body 121 and a second barrel body 122. That is to say, the eyepiece device 100 provided in the embodiment of the present application is a double barrel structure, and the two barrel bodies are arranged at an angle along a first direction. Figure 1 and Figure 2 As shown by the arrow X in FIG. 1 , the first direction can be understood as the width direction of the eyepiece device 100, or can be understood as the left-right direction of the eyepiece device 100. In order to ensure the comfort of the observer, the two barrel bodies are arranged at an angle. Specifically, the angle between the optical axes of the two barrel bodies (the first barrel body 121 and the second barrel body 122) can be as follows: Figure 2 As shown in the figure, angle α can be 30°, 45°, or other angles that meet the requirements. It can be understood that the first barrel body 121 and the second barrel body 122 have the same structure and are symmetrically arranged.

[0034] Among them, Figure 2 As shown, a first guide groove 123 is provided in the axial direction of the barrel body. It can be understood that the length direction of the first guide groove 123 is parallel to the axial direction of the barrel body, that is, the length direction of the first guide groove 123 is parallel to the optical axis of the barrel body. The optical axis of the barrel body can be as shown in FIG. Figure 2 As shown by the straight line k in the figure, this arrangement ensures that during the movement of the movable sleeve 150 relative to the shell 110 driven by the diopter adjustment mechanism 130, the optical axis of the lens 140 installed on the movable sleeve 150 coincides with the optical axis of the sleeve body, thereby ensuring a good and accurate perception effect.

[0035] Among them, Figure 2 As shown, the second guide groove 161 on the movable slider 160 is arranged along the first direction, and the first guide groove 123 on the barrel body is arranged along the axial direction of the barrel body. This arrangement can ensure that the guide member 170 penetrating the first guide groove 123 and the second guide groove 161 moves smoothly without interference, so as to ensure the smoothness and reliability of the vision adjustment machine. At the same time, the operating member 180 is rotated, and the two guide members 170 can drive the two movable sleeves 150 to move synchronously, so as to achieve synchronous and continuous adjustment of the vision of the two barrel bodies, which is simple to operate and convenient to use.

[0036] Furthermore, the rotation axis of the operating member 180 is perpendicular to the first direction, wherein: Figure 1 and Figure 2 The Y-axis direction shown in FIG. 1 is perpendicular to the first direction, that is, the rotation axis of the operating member 180 is along the Figure 1 and Figure 2In this way, the operating member 180 rotates, so that the movable slider 160 moves forward or backward relative to the operating member 180 along the Y-axis direction, and through the limiting effect of the first guide groove 123 and the second guide groove 161, the two movable sleeves 150 can be driven to move forward or backward along the axial direction of the cylinder body respectively, so as to realize the continuous adjustment of the visibility of the two cylinder bodies.

[0037] Among them, the operating member 180 is confined in the shell 110 and can rotate relative to the shell 110, so that the operating member 180 can rotate smoothly relative to the shell 110, and the operating member 180 will not move forward and backward relative to the shell 110 along the direction of the rotating shaft. Therefore, the rotating operating member 180 can make the moving slider 160 threadedly connected to the operating member 180 move forward and backward relative to the shell 110, and then realize the continuous adjustment operation of the vision through the guide member 170 and the moving sleeve 150. The structure is simple, easy to implement, and easy to operate.

[0038] like Figure 1 , Figure 2 and Figure 3 As shown, in some possible embodiments provided by the present application, the operating member 180 is sequentially provided with an external thread structure 181, a stopper, and an operating portion 183 along the axial direction. The external thread structure 181 is located inside the housing 110 and connected to the moving slider 160 to achieve a threaded connection between the operating member 180 and the moving slider 160, so as to ensure that the rotation of the operating member 180 can cause the moving slider 160 and the operating member 180 to move relative to each other.

[0039] Among them, the limiting portion is located inside the shell 110 and is rotatably limited by the shell 110. The setting of the limiting portion enables the operating member 180 to rotate smoothly relative to the shell 110, and the operating member 180 will not move forward and backward relative to the shell 110 along the direction of the rotating shaft. Therefore, rotating the operating member 180 can enable the moving slider 160 threadedly connected to the operating member 180 to move forward and backward relative to the shell 110.

[0040] Among them, the operating part 183 is located outside the shell 110, so that the observer can operate the operating part 183 outside the shell 110, so that the rotation of the operating part 183 drives the entire operating member 180 to rotate, so as to realize the relative movement of the movable slider 160 and the operating member 180, which is simple to operate and easy to use.

[0041] Specifically, the operating portion 183 may be a rotating hand wheel structure, a knob structure, or other structures that meet the requirements, so as to facilitate the observer to operate the operating member 180 to rotate.

[0042] like Figure 1 , Figure 2 and Figure 3As shown, in some possible embodiments provided in the present application, the limiting portion includes an annular groove 182 opened along the circumference of the operating member 180, and a limiting member 113 is arranged or installed inside the shell 110, and the limiting member 113 extends into the annular groove 182 and can move in the annular groove 182. Thus, through the cooperation between the limiting member 113 and the annular groove 182, the operating member 180 can rotate smoothly relative to the shell 110, and the operating member 180 will not move forward and backward along the axis direction relative to the shell 110, so as to ensure the accuracy of the vision adjustment.

[0043] The annular groove 182 is easy to process, which is beneficial to reducing the manufacturing cost, and the annular groove 182 has a good and stable limiting effect.

[0044] Furthermore, the stopper 113 can be disposed inside the housing 110, such as a protruding structure can be disposed inside the housing 110, so that the protruding structure and the annular groove 182 cooperate to play a good limiting role on the operating member 180. In this way, the stopper 113 and the housing 110 can be an integrally formed structure, which is convenient for processing and easy for production, which is conducive to reducing manufacturing costs and simplifying the assembly process.

[0045] Alternatively, the stopper 113 can be installed inside the housing 110, that is, the stopper 113 and the housing 110 are split structures, so that the stopper 113 can be installed at a suitable position of the housing 110 according to needs, so as to cooperate with the annular groove 182 to play a good limiting role on the operating member 180. The stopper 113 and the housing 110 are set as a split structure, so that the structure of the stopper 113 can be diversified and flexible, and it can facilitate the disassembly and assembly of the operating member 180, the housing 110, and the stopper 113, and then facilitate the maintenance and replacement of the operating member 180.

[0046] like Figure 1 and Figure 3 As shown, in the above embodiment, the limiting member 113 includes a limiting screw, the housing 110 is provided with a first threaded hole, and the limiting screw is connected to the housing 110 through the first threaded hole.

[0047] The limit screw is a standard part, suitable for mass production, and has a low cost. The first threaded hole is provided on the housing 110, which is convenient for processing, easy to implement, and has a low processing cost.

[0048] In this embodiment, the limit screw can be screwed on the outside of the housing 110 to connect the limit screw with the first threaded hole, and the limit screw is extended into the annular groove 182 of the operating member 180 in the housing 110, thereby realizing the assembly of the limit screw and the housing 110, and the limit screw can play a good limiting role on the operating member 180. At the same time, the limit screw can be screwed in the opposite direction to disengage the limit screw from the annular groove 182, so that the operating member 180 and the housing 110 can be disassembled, and the operation is simple.

[0049] It can be understood that a through hole is also provided on the shell 110, and the operating member 180 is inserted into the through hole, so that the external thread structure 181 and the annular groove 182 are located inside the shell 110, and the operating part 183 is located outside the shell 110. Then, the position of the operating member 180 is adjusted so that the annular groove 182 is opposite to the position of the first threaded hole, and then the limit screw is placed in the first threaded hole from the outside of the shell 110, and the limit screw is screwed so that the limit screw extends into the annular groove 182 of the operating member 180. The installation of the limit screw can be achieved, so that the limit screw and the annular groove 182 cooperate to limit the movement of the operating room along the direction of the rotation axis relative to the shell 110, and the operating member 180 can rotate smoothly relative to the shell 110.

[0050] like Figure 1 , Figure 2 and Figure 3 As shown, in some possible embodiments provided in the present application, the housing 110 includes a first housing 111 and a second housing 112 that are detachably connected and distributed in a direction perpendicular to the first direction, that is, the first housing 111 and the second housing 112 are arranged along Figure 1 and Figure 2 The Y direction is shown. The Y direction can be understood as the length direction of the eyepiece device 100, and can also be understood as the front-to-back direction of the eyepiece device, wherein the first shell 111 is located in front of the second shell 112. The lens barrel 120 is installed in the space enclosed by the first shell 111 and the second shell 112, the operating portion 183 is located outside the second shell 112, the limiting portion is limited in the second shell 112, and the external thread structure 181 is located in the first shell 111. Therefore, the first shell 111 and the second shell 112 are set to be detachably connected, which can facilitate the installation and disassembly of the lens barrel 120 and the diopter adjustment mechanism 130, and is convenient for maintenance and replacement.

[0051] Specifically, the first shell 111 and the second shell 112 can be detachably connected by at least one of a threaded structure, a snap-fit ​​structure, a plug-in structure, a mortise and tenon structure, and a magnetic structure.

[0052] Specifically, the housing 110 in this embodiment further includes connecting screws 114 , and the first housing 111 and the second housing 112 are detachably connected via the connecting screws 114 , so as to facilitate assembly and disassembly of the first housing 111 and the second housing 112 .

[0053] Furthermore, the ends of the first shell 111 and the second shell 112 adjacent to each other are respectively provided with a first convex groove 1111 and a second convex groove 1121 protruding toward the outside of the shell 110, that is, the first convex groove 1111 is arranged at the end of the first shell 111 close to the second shell 112, and the second convex groove 1121 is arranged at the end of the second shell 112 close to the first shell 111, the first convex groove 1111 and the second convex groove 1121 are connected, and the first convex groove 1111, the second convex groove 1121 and the barrel body are enclosed to form an avoidance space for avoiding the moving slider 160, so that the moving slider 160 can move in the avoidance space, so as to ensure that the visual acuity of the eyepiece device 100 can be continuously adjusted within a certain range, so as to meet the needs of observers with different visual acuity, expand the scope of use, and improve versatility.

[0054] Specifically, the first convex groove 1111 and the second convex groove 1121 may be disposed at the top or the bottom of the first shell 111 and the second shell 112 .

[0055] Specifically, a connecting structure is also provided on the top of the second shell 112 to connect the eyepiece device 100 with the middle bridge 210 to achieve the assembly of the night vision device 200.

[0056] like Figure 2 As shown, in some possible embodiments provided by the present application, the second guide groove 161 includes two sub-guide grooves corresponding to the guide member 170, and the two sub-guide grooves are distributed along the first direction, such as the two sub-guide grooves are respectively the first sub-guide groove 162 and the second sub-guide groove 163, that is, each guide member 170 passes through the corresponding sub-guide groove and extends to the corresponding second guide groove 161. The structures of the first sub-guide groove 162 and the second sub-guide groove 163 can be the same and symmetrically distributed.

[0057] Furthermore, the length of the sub-guide groove is equal to or greater than the length of the first guide groove 123. The length of the sub-guide groove can be as follows: Figure 2 As shown in d2 in FIG. 1 , the length of the first guide groove 123 can be as follows: Figure 2 As shown in d1, that is, d2≥d1, it can be understood that the length d1 of the first guide groove 123 can match the diopter adjustment range of the eyepiece device 100, that is, when the guide member 170 is located at the two ends of the first guide groove 123, the diopter of the eyepiece device 100 is two extreme values.

[0058] In this embodiment, by making the length d2 of the sub-guide groove equal to or greater than the length d1 of the first guide groove 123, it can be ensured that the length of the sub-guide groove will not affect the smooth reaching of the guide member 170 to the two ends of the first guide groove 123, that is, the length of the sub-guide groove will not interfere with the range of vision adjustment, so as to ensure that the vision adjustment mechanism 130 can perform comprehensive and continuous vision adjustment within the range of vision adjustment.

[0059] It is understandable that, in some other examples, the second guide groove 161 may be a through groove with a longer length, and the two guide members 170 both extend in the second guide groove 161 .

[0060] like Figure 1 As shown, in some possible embodiments provided in the present application, a second threaded hole 152 is provided on the outer wall of the movable sleeve 150 , and the guide member 170 is a guide screw, which is connected to the movable sleeve 150 through the second threaded hole 152 .

[0061] The guide screw is a standard part, suitable for mass production, and has low cost. The second threaded hole 152 is arranged on the outer wall of the movable sleeve 150, which is convenient for processing, easy to implement, and has low processing cost.

[0062] In this embodiment, the guide screw can be screwed on the outside of the movable sleeve 150 to connect the guide screw with the second threaded hole 152, thereby realizing the assembly of the guide screw and the movable sleeve 150. At the same time, the guide screw can be screwed in the opposite direction to disengage the guide screw from the second threaded hole 152, thereby realizing the disassembly and assembly of the guide screw and the movable sleeve 150. The operation is simple and convenient.

[0063] In the specific assembly process, the lens 140 can be first installed in the movable sleeve 150, and the movable sleeve 150 can be inserted into the barrel body so that the second threaded hole 152 is opposite to the first guide groove 123 on the barrel body, and then the guide screw is inserted from the outside of the barrel body into the first guide groove 123 and connected with the second threaded hole 152 to achieve the connection between the guide screw and the movable sleeve 150. It can be understood that after the assembly of the two guide screws and the two movable sleeves 150 is completed in sequence, the front end of the lens barrel 120 is inserted into the first housing 111, and the operating member 180 is passed through the second housing 112 and connected to the movable slider 160 through the external thread structure 181. Then, the first shell 111 and the second shell 112 are brought close together, and after the guide member 170 is inserted into the second guide groove 161 of the movable slider 160, the first shell 111 and the second shell 112 are connected and locked by the connecting screws 114. The assembly of the shell 110, the lens barrel 120, and the diopter adjustment mechanism 130 can be achieved. The operation is simple, the disassembly and assembly are convenient, and it is easy to repair and replace parts, which is conducive to improving the efficiency of repair and replacement.

[0064] like Figure 1 , Figure 4 and Figure 5 As shown, in some possible embodiments provided in the present application, the diopter adjustment mechanism 130 also includes a pressure ring 190, which is located at one end of the lens 140, and the inner wall of the movable sleeve 150 is provided with a slot 151, and the pressure ring 190 is connected to the inner wall of the movable sleeve 150 to clamp the lens 140 in the slot 151, thereby realizing the installation of the lens 140 and the movable sleeve 150, so that the lens 140 can be reliably and stably clamped in the slot 151 of the pressure ring 190 and the movable sleeve 150, which is simple to operate and easy to install.

[0065] Specifically, the pressure ring 190 can be located at the front end of the lens 140 or at the rear end of the lens 140, and the front-to-back direction of the lens 140 is parallel to the axial direction of the barrel body. It is understandable that the lens can also be fixed in the movable sleeve 150 by dispensing glue, or the lens can be fixed in the movable sleeve 150 by the combination of the pressure ring 190 and dispensing glue.

[0066] Furthermore, the movable sleeve 150 and the barrel body are coaxially arranged, and the axial direction of the barrel body is the axial direction of the movable sleeve 150. Along the axial direction of the barrel body, the inner wall of the movable sleeve 150 is provided with a threaded structure behind the clamping groove 151, and the pressing ring 190 is connected to the movable sleeve 150 through the threaded structure, that is, the inner wall of the sleeve is provided with an internal thread, and the outer peripheral side wall of the pressing ring 190 is provided with an external thread, and then the connection between the movable sleeve 150 and the pressing ring 190 is achieved by matching the internal thread and the external thread, which is simple to operate, convenient to disassemble and assemble, and convenient to repair and replace the lens 140. At the same time, this method allows the pressing ring 190 to be arranged at the rear end of the lens 140, which can reduce the influence of the pressing ring 190 on the radiated light of the lens 140, so that the eyepiece device 100 has a good and accurate perception effect.

[0067] Furthermore, the lens 140 is configured as a convex lens or a concave lens. Figure 4 The lens 140 in the figure is a convex lens. Figure 5 The lens in the embodiment is a concave lens. Specifically, the lens can be made of a broken material. Figure 4 and Figure 5 The interrupted cross-hatching shown in represents the glass material.

[0068] like Figure 6 , Figure 7 and Figure 8 As shown, an embodiment of the second aspect of the present application provides a night vision device 200, including: a middle bridge 210; and an eyepiece device 100 of any embodiment of the first aspect, wherein two eyepiece devices 100 are connected to the middle bridge 210. Since the night vision device 200 includes the eyepiece device 100 of any of the aforementioned embodiments, it has all the technical effects of the aforementioned eyepiece device 100, which will not be described one by one here.

[0069] Furthermore, since the night vision device 200 includes two eyepiece devices 100, that is, the night vision device 200 provided in the embodiment of the present application can be a four-tube binocular night vision device. It can be understood that in some examples, the night vision device 200 can also include one eyepiece device 100, that is, the night vision device 200 can be a binocular monocular night vision device.

[0070] Further, the middle bridge 210 can be connected to the top of the two eyepiece devices 100.

[0071] Furthermore, the night vision goggles 200 may also include a connecting seat 220, which is installed above the middle bridge 210. The night vision goggles 200 can be installed at a suitable position through the connecting seat 220. For example, the night vision goggles 200 can be installed on a head-mounted structure, such as a helmet, so that the night vision goggles 200 are head-mounted night vision goggles.

[0072] It is understandable that in some examples, the night vision device 200 may also be a handheld night vision device.

[0073] In the description of this application, the term "plurality" refers to two or more than two. Unless otherwise clearly defined, the terms "upper" and "lower" indicate positions or positional relationships based on the positions or positional relationships described in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this application. The terms "connect", "install", "fixed", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0074] For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An eyepiece device, characterized in that: include: case; A lens barrel, the lens barrel is installed inside the housing, the lens barrel comprises two barrel bodies arranged in pairs and at an angle along a first direction, and the barrel bodies are provided with first guide grooves along their respective axial directions; A diopter adjustment mechanism, comprising a lens, a movable sleeve, a movable slider, a guide member, and an operating member, wherein the lens is mounted on the movable sleeve, the movable sleeve corresponds to the barrel body and is movably arranged in the barrel body, the movable slider is located between the barrel body and the shell, and is provided with a second guide groove along the first direction, the first end of the guide member is connected to the movable sleeve, the second end of the guide member is penetrated through the first guide groove and extends into the second guide groove, the guide member is configured to be movable in the first guide groove and the second guide groove, the operating member is rotatably restricted on the shell, and the operating member is also connected to the movable slider through an external thread structure; The operating member is rotated to make the operating member and the movable slider move relative to each other, and the movable sleeve is driven to move by the guide member moving along the first guide groove.

2. The eyepiece device according to claim 1, characterized in that The operating member includes an external thread structure, a limiting portion, and an operating portion which are sequentially arranged along the axial direction. The external thread structure is located inside the shell and is connected to the movable slider. The limiting portion is located inside the shell and is rotatably limited by the shell. The operating portion is located outside the shell.

3. The eyepiece device according to claim 2, characterized in that: The limiting portion includes an annular groove opened along the circumference of the operating member. A limiting member is arranged or installed inside the housing. The limiting member extends into the annular groove and can move in the annular groove.

4. The eyepiece device according to claim 3, characterized in that: The limiting member includes a limiting screw, the shell is provided with a first threaded hole, and the limiting screw is connected to the shell through the first threaded hole.

5. The eyepiece device according to claim 2, characterized in that: The housing comprises a first housing and a second housing which are detachably connected and distributed in a direction perpendicular to the first direction, the lens barrel is installed in a space enclosed by the first housing and the second housing, the operating portion is located outside the second housing, the limiting portion is limited in the second housing, and the external thread structure is located in the first housing; The first shell and the second shell are respectively provided with a first convex groove and a second convex groove protruding outward at the ends adjacent to each other. The first convex groove and the second convex groove are connected and enclosed with the cylinder body to form an escape space for evading the moving slider.

6. The eyepiece device according to claim 1, characterized in that: The second guide groove comprises two sub-guide grooves corresponding to the guide member, and the two sub-guide grooves are distributed along the first direction; Wherein, the length of the sub-guide groove is equal to or greater than the length of the first guide groove.

7. The eyepiece device according to claim 1, characterized in that: The outer wall of the movable sleeve is provided with a second threaded hole, and the guide member is a guide screw, and the guide screw is connected to the movable sleeve through the second threaded hole.

8. The eyepiece device according to claim 1, characterized in that: The diopter adjustment mechanism further includes a pressing ring, which is located at one end of the lens, and the inner wall of the movable sleeve is provided with a clamping groove, and the pressing ring is connected to the inner wall of the movable sleeve to clamp the lens at the clamping groove; Wherein, the lens is configured as a concave lens or a convex lens.

9. The eyepiece device according to claim 8, characterized in that: Along the axial direction of the barrel body, the inner wall of the movable sleeve is provided with a thread structure behind the clamping groove, and the pressure ring is connected to the movable sleeve through the thread structure.

10. A night vision device, characterized in that: include: Middle Bridge; And the eyepiece device as described in any one of claims 1 to 9, two of the eyepiece devices are connected to the middle bridge.

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