Adaptable eyepiece assembly and observation instrument
By designing a split-shell structure with an detachable eyepiece assembly and a robust connection method, the problem of inconvenient connection between the observation instrument and the target component was solved, achieving convenient connection and efficient adaptation, and improving imaging quality and user experience.
Patent Information
- Application Number
- CN202520109191.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-16
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-01-16
AI Technical Summary
Existing observation instruments lack sufficient compatibility when connecting to target components, resulting in inconvenient connection.
Design an Adapter Eyepiece Assembly with a Split Housing Structure, including a First Housing and a Second Housing, with a First Connecting Structure and a Second Connecting Structure, achieving a stable connection through fasteners and locking elements, and equipped with a seal to improve anti-loosening and waterproof/dustproof performance.
It improves the ease of connection and compatibility between the observation instrument and the target components, reduces production costs, and enhances structural compactness and imaging quality.
Smart Images
Figure CN223692568U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of camera, in particular to a detachable eyepiece assembly and a sighting instrument. BACKGROUND
[0002] In the use of the sighting instrument, it is often necessary to connect other target components on the eyepiece of the sighting instrument, such as connecting other eyepieces, or connecting the sighting instrument (such as an infrared sighting instrument) to other devices (such as imaging devices, sighting devices, etc.) to meet specific observation requirements.
[0003] Therefore, in order to improve the connection and adaptation capability of the sighting instrument and the target component, it is necessary to improve the design of the eyepiece of the sighting instrument to facilitate the connection of the target component. CONTENT OF THE INVENTION
[0004] Therefore, the present application provides a detachable eyepiece assembly and a sighting instrument to facilitate the connection of the sighting instrument and the target component.
[0005] In a first aspect, the present application provides a detachable eyepiece assembly, comprising: a housing, the housing having a cavity through both ends, and the housing being provided with a first connecting structure for connecting a body of a sighting instrument at a first end of the housing, and the housing being provided with a second connecting structure for connecting a target component at a second end of the housing; and a first eyepiece, the first eyepiece being arranged in the cavity of the housing.
[0006] In a specific embodiment, the housing comprises a first housing and a second housing, the first housing and the second housing are respectively through-both-ends structures, and the first housing is arranged in the second housing; wherein the first eyepiece is arranged in the cavity of the first housing, the first connecting structure is arranged on the first housing, and the second connecting structure is arranged on the second housing.
[0007] In a specific embodiment, the housing is further provided with a fastener, a first connecting hole is formed on an outer wall of the first housing, a second connecting hole is formed on an inner wall of the second housing, and the fastener is arranged in the first connecting hole and the second connecting hole.
[0008] In a specific embodiment, the second connecting structure is adapted to one end of the target component, so that the target component and the housing can be connected; wherein the target component at least comprises a second eyepiece and a through-both-ends adapter.
[0009] In a specific embodiment, the second connecting structure is an adapter thread arranged on an outer wall of the housing; and the eyepiece assembly further comprises a locking member, the locking member being connected to the housing, and the locking member being capable of abutting against the target component along an axial direction of the housing.
[0010] In a specific embodiment, the locking member is provided with an inner thread matched with the adapter thread, so that the locking member is threadedly connected with the housing.
[0011] In a specific embodiment, the first eyepiece is threadedly connected with the housing, and the first eyepiece is axially movable relative to the housing for adjustment.
[0012] In a specific embodiment, an outer wall of the first eyepiece is provided with a bevel, and the housing is provided with a stopper, one end of the stopper being capable of abutting against the bevel.
[0013] In a specific embodiment, an outer wall of the first eyepiece is provided with a first stop surface, an inner wall of the housing is provided with a second stop surface, and an elastic member is arranged between the first stop surface and the second stop surface, and the first stop surface, the elastic member and the second stop surface are sequentially arranged along an axial direction of the first eyepiece, and the elastic member abuts against the first stop surface and the second stop surface respectively.
[0014] In a specific embodiment, a sealing member is arranged between an outer wall of the first eyepiece and an inner wall of the housing.
[0015] In a second aspect, the embodiments of the present application provide an observation instrument, comprising: a body; an eyepiece assembly, a first end of a housing of the eyepiece assembly being connected to the body, wherein the eyepiece assembly is any of the eyepiece assemblies described in the embodiments of the present application; a second eyepiece and / or an adapter; wherein one end of the second eyepiece is capable of being connected to a second end of the housing of the eyepiece assembly; and two ends of the adapter are through, and one end of the adapter is capable of being connected to the second end of the housing of the eyepiece assembly.
[0016] In a specific embodiment, the observation instrument comprises the adapter, one end of the adapter being connected to the second end of the housing of the eyepiece assembly, and the other end of the adapter being connected with a scope.
[0017] The adapterable eyepiece assembly and the observation instrument provided by the embodiments of the present application comprise: a housing and a first eyepiece; the housing has a cavity with two through ends, and the housing is provided with a first connecting structure for connecting a body of an observation instrument at a first end of the housing, and the housing is also provided with a second connecting structure for connecting a target component at a second end of the housing; and the first eyepiece is arranged in the cavity of the housing. The eyepiece assembly can be mounted on the body of the observation instrument, and the housing can conveniently connect the target component with the eyepiece assembly, thereby improving the connection convenience and the adaptation ability of the observation instrument to the target component. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only represent some of the embodiments of the present application, and for those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.
[0019] Figure 1 An exploded view of the interchangeable eyepiece assembly provided by the embodiments of the present application;
[0020] Figure 2 A cross-sectional view of the interchangeable eyepiece assembly provided by the embodiments of the present application;
[0021] Figure 3 Another cross-sectional view of the interchangeable eyepiece assembly provided by the embodiments of the present application;
[0022] Figure 4 A schematic view of the observation instrument provided by the embodiments of the present application;
[0023] Figure 5 Another schematic view of the observation instrument provided by the embodiments of the present application.
[0024] Main figure mark explanation:
[0025] 10-eyepiece assembly; 11-housing; 110-adapting thread; 111-first housing; 112-second housing; 12-first eyepiece; 120-bevel; 13-locking piece; 14-stop piece; 15-elastic piece; 16-gasket; 17-sealing piece; 18-fastening piece; 100-observation instrument; 20-airframe; 30-adapting piece; 40-second eyepiece. DETAILED DESCRIPTION
[0026] The embodiments of the present application will be described in detail below with reference to the drawings.
[0027] It should be clear that the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative effort fall within the scope of protection of the present application.
[0028] The eyepiece of the observation instrument often needs to be connected with other target components. In order to improve the connection convenience and adaptation ability of the observation instrument to the target components, in the first aspect, like Figure 1As shown, the embodiment of the present application provides a switchable eyepiece assembly 10, which can include a shell 11, a first eyepiece 12; the shell 11 has a cavity through both ends, and the shell 11 is provided with a first connecting structure for connecting the body 20 of the observation instrument 100 at the first end of the shell 11, and the shell 11 is also provided with a second connecting structure for connecting the target component at the second end of the shell 11; the first eyepiece 12 is arranged in the cavity of the shell 11.
[0029] The observation instrument 100 can be an infrared observation instrument 100, or a camera that images through visible light, etc., and the body 20 of the observation instrument 100 is used to install a lens, imaging circuit, functional component, etc. The first connecting structure provided on the shell 11 can be a threaded connection structure, or a locking connector such as a bolt, etc., so that the first end of the shell 11 can be detachably connected to the body 20 of the observation instrument 100, so that the eyepiece assembly 10 can participate in the imaging system of the observation instrument 100. Further, the shell 11 is also provided with a second connecting structure for connecting a target component such as an optical mirror or other components at the second end of the shell 11, and the second connecting structure can also adopt a detachable structure design, so that based on the first connecting structure and the second connecting structure of the shell 11, not only is it convenient to replace different eyepiece assemblies 10 for the observation instrument 100, but also it is convenient to add other functional components to the observation instrument 100 using the shell 11, thereby improving the expansion assembly capability and use convenience of the observation instrument 100.
[0030] The embodiment of the present application provides a switchable eyepiece assembly 10, which can include a shell 11, a first eyepiece 12; the shell 11 has a cavity through both ends, and the shell 11 is provided with a first connecting structure for connecting the body 20 of the observation instrument 100 at the first end of the shell 11, and the shell 11 is also provided with a second connecting structure for connecting the target component at the second end of the shell 11; the first eyepiece 12 is arranged in the cavity of the shell 11. The eyepiece assembly 10 can be installed on the body 20 of the observation instrument 100, and the shell 11 can conveniently connect the target component with the eyepiece assembly 10, thereby improving the connection convenience and adaptation capability of the observation instrument 100 to the target component.
[0031] The shell 11 with a single structure is difficult to process and is not convenient for assembling other components in the shell 11, therefore, as shown in Figure 1 , Figure 2 In an embodiment of the present application, the shell 11 includes a first shell 111 and a second shell 112, the first shell 111 and the second shell 112 are both through structures, and the first shell 111 is arranged in the second shell 112; wherein the first eyepiece 12 is arranged in the cavity of the first shell 111, the first connecting structure is arranged on the first shell 111, and the second connecting structure is arranged on the second shell 112.
[0032] It can be understood that the shell 11 adopts a split structure, which simplifies the mold opening process, is conducive to reducing production costs, and the split first shell 111 and second shell 112 facilitate the installation position of other components such as the first eyepiece 12, thereby further improving the compactness of the eyepiece assembly 10, and reducing the structure size and weight. In the embodiment, the first shell 111 can be used to connect the body 20 of the observation instrument 100, and the second shell 112 can be used to connect the target component. The first shell 111 and the second shell 112 can be connected to each other through a threaded structure, a buckle structure or a locking connector, or can be connected based on an interference fit, which is not limited in the embodiment.
[0033] In the case of a split structure of the shell 11, in order to improve the connection stability of the first shell 111 and the second shell 112, as shown in Figure 3 In an embodiment of the present application, the shell 11 is also provided with a fastener 18, a first connecting hole is formed in the outer wall of the first shell 111, and a second connecting hole is formed in the inner wall of the second shell 112, and the fastener 18 is arranged in the first connecting hole and the second connecting hole. The fastener 18 can be a screw, the first connecting hole can be a threaded hole formed in the outer wall of the first shell 111, and the second connecting hole can be a through hole or a blind hole formed in the inner wall of the second shell 112; in some embodiments, the first connecting hole can be a through hole or a blind hole formed in the outer wall of the first shell 111, and the second connecting hole can be a threaded hole formed in the inner wall of the second shell 112; or the fastener 18 is a pin, the first connecting hole is a through hole or a blind hole formed in the outer wall of the first shell 111, and the second connecting hole can be a through hole or a blind hole formed in the inner wall of the second shell 112, and the fastener 18 is connected to the first connecting hole and the second connecting hole in an interference fit. After the fastener 18 passes through the first connecting hole and the second connecting hole, the first shell 111 and the second shell 112 can be limited and fixed to each other, a plurality of first connecting holes can be arranged along the circumference of the first shell 111, and a plurality of second connecting holes can be arranged along the circumference of the second shell 112, and each first connecting hole and the corresponding second connecting hole are arranged with the fastener 18, so that the first shell 111 and the second shell 112 can be firmly connected, and relative rotation between the two is prevented.
[0034] Optionally, in an embodiment of the present application, the second connecting structure is adapted to one end of the target component, so that the target component can be connected to the housing 11; wherein the target component at least includes the second eyepiece 40 and the adapter 30. The second connecting structure can be a threaded connection structure, a buckle connection structure, or a locking connection member such as a bolt, etc., so that the target component connected to the second end of the housing 11 can be the second eyepiece 40 or other optical mirrors, or can be the adapter 30 which is through at both ends, one end of the adapter 30 is provided with a connecting structure adapted to the housing 11, and the other end of the adapter 30 is provided with a connecting structure adapted to other devices such as a sighting scope, a functional gain component, etc. Through the adapter 30, the eyepiece assembly 10 can be connected to other devices, that is, the observation instrument 100 can be connected to other devices to meet specific observation requirements.
[0035] Optionally, as shown in Figure 2 , Figure 3 in an embodiment of the present application, the second connecting structure is the adapter thread 110 provided on the outer wall of the housing 11; the eyepiece assembly 10 further includes a locking member 13 connected to the housing 11, and the locking member 13 can abut against the target component along the axial direction of the housing 11. After the eyepiece assembly 10 is connected to the target component by threaded connection, the threaded connection may be loose during use, affecting the imaging quality and use safety. The locking member 13 abuts against the target component, so that a pre-tightening force is formed between the threaded contact surface of the target component and the housing 11, which not only eliminates the gap between the threaded connection, but also increases the friction between the threaded contact surface, thereby improving the reliability and anti-loosening ability of the threaded connection between the target component and the housing 11. The locking member 13 can be made of elastic material to form elastic abutment against the target component, or the locking member 13 can abut against the target component by corresponding assembly method, for example, interference fit or assembly pre-tightening force, etc. Here, the abutment refers to at least one of point contact, line contact and surface contact, and the contact here can be direct contact, such as direct contact between the locking member 13 and the target component, or indirect contact, such as other components between the locking member 13 and the target component, which is not limited here.
[0036] In order to optimize the component structure and reduce the production cost, optionally, as shown in Figure 2 in an embodiment of the present application, the locking member 13 is provided with an inner thread adapted to the adapter thread 110, so that the locking member 13 is connected to the housing 11 by threaded connection. It can be understood that the locking member 13 and the target component share the adapter thread 110, and the assembly pre-tightening force is formed by threaded connection, which not only realizes the anti-loosening of the target component, but also realizes the assembly of the locking member 13 and the target component by machining the adapter thread 110 on the outer wall of the housing 11, which is simple and compact in structure, and is convenient to install.
[0037] Optionally, in an embodiment of the present application, the first eyepiece 12 is threadedly connected with the shell 11, and the first eyepiece 12 is axially movable relative to the shell 11 for adjustment. For example, an inner thread can be provided on the inner wall of the shell 11, and an outer thread can be provided on the outer wall of the first eyepiece 12, so that the first eyepiece 12 is threadedly connected with the shell 11 and can rotate relative to the shell 11. During the rotation, the first eyepiece 12 is axially movable relative to the shell 11 for adjustment under the action of the thread pair of the first eyepiece 12 and the shell 11, so that the distance between the first eyepiece 12 and the lens mounted on the body 20 of the observation instrument 100 can be changed, and the focusing function of the first eyepiece 12 can be realized.
[0038] Optionally, as shown in Figure 2 In an embodiment of the present application, the outer wall of the first eyepiece 12 is provided with a slope 120, and the shell 11 is provided with a stopper 14, one end of the stopper 14 being capable of abutting against the slope 120. In this embodiment, a ring groove can be provided on the outer wall of the first eyepiece 12 in the circumferential direction, the cross section of the ring groove can be trapezoidal, at least one groove wall of the ring groove adopts the slope 120 structure, a threaded hole can be provided on the inner wall of the shell 11, and the stopper 14 can adopt a screw and be threaded in the threaded hole. In this way, after the first eyepiece 12 is axially moved relative to the shell 11 for adjustment to a target position, the stopper 14 is inserted into the ring groove, and one end of the stopper 14 abuts against the slope 120 of the ring groove, so that the axial displacement or movement of the first eyepiece 12 can be further prevented, and the imaging quality of the observation instrument 100 can be ensured.
[0039] Since the first eyepiece 12 is threadedly connected with the shell 11, a thread cooperation gap exists. In order to avoid the displacement or movement of the first eyepiece 12 due to the thread cooperation gap from affecting the focusing during the axial movement of the first eyepiece 12 relative to the shell 11 for focusing, optionally, as shown in Figure 2 In an embodiment of the present application, the outer wall of the first eyepiece 12 is provided with a first stop surface, the inner wall of the shell 11 is provided with a second stop surface, an elastic member 15 is arranged between the first stop surface and the second stop surface, and the first stop surface, the elastic member 15, and the second stop surface are sequentially arranged in the axial direction of the first eyepiece 12, and the elastic member 15 abuts against the first stop surface and the second stop surface, respectively.
[0040] The outer wall of the first eyepiece 12 can be provided with a convexity or a concavity in the circumferential direction to form a first stop surface, the inner wall of the shell 11 can be provided with a convexity or a concavity in the circumferential direction to form a second stop surface, and the elastic member 15 is arranged between the first stop surface and the second stop surface. The elastic member 15 can be a wave spring. The first stop surface, the elastic member 15, and the second stop surface are sequentially arranged along the axial direction of the first eyepiece 12. In this way, the two sides of the elastic member 15 can be elastically abutted against the first stop surface and the second stop surface, respectively. Thus, the threaded gap between the first eyepiece 12 and the shell 11 can be eliminated along the axial direction of the first eyepiece 12, the axial displacement and movement of the first eyepiece 12 during focusing can be prevented, and the focusing imaging quality of the first eyepiece 12 can be ensured. Similarly, the abutment of the elastic member 15 against the first stop surface and the second stop surface can specifically refer to at least one of point contact, line contact, and surface contact. The contact herein can be direct contact, for example, the direct contact of the elastic member 15 against the first stop surface and the second stop surface. Alternatively, the contact can be indirect contact, for example, in some embodiments, a gasket 16 is additionally arranged between the elastic member 15 and the first stop surface and / or between the elastic member 15 and the second stop surface to meet the corresponding assembly requirements.
[0041] Optionally, as shown in FIG. 1, Figure 2 in an embodiment of the present application, a sealing member 17 is arranged between the outer wall of the first eyepiece 12 and the inner wall of the shell 11. The sealing member 17 can be an O-shaped sealing ring. The sealing member 17 is arranged between the outer wall of the first eyepiece 12 and the inner wall of the shell 11, and can form a sealing effect between the sealing member 17 and the outer wall of the first eyepiece 12 and between the sealing member 17 and the inner wall of the shell 11, respectively. Thus, rainwater, debris, and the like can be prevented from entering one end of the first eyepiece 12 along the gap between the outer wall of the first eyepiece 12 and the inner wall of the shell 11 to the other end of the first eyepiece 12. Thus, the waterproof and dustproof effects of the eyepiece assembly 10 and the observation instrument 100 can be improved.
[0042] In a second aspect, as shown in FIG. 2, Figure 4 , Figure 5 the embodiment of the present application also provides an observation instrument 100, which comprises a body 20, an eyepiece assembly 10, a second eyepiece 40, and / or an adapter 30. The first end of the shell 11 of the eyepiece assembly 10 is connected to the body 20. The eyepiece assembly 10 is any eyepiece assembly 10 described in the embodiments of the present application. One end of the second eyepiece 40 can be connected to the second end of the shell 11 of the eyepiece assembly 10. The adapter 30 is through at both ends, and one end of the adapter 30 can be connected to the second end of the shell 11 of the eyepiece assembly 10.
[0043] In some other embodiments of the present application, as shown in FIG. 3, Figure 4As shown, the target component to be connected by the eyepiece assembly 10 is the adapter 30, one end of the adapter 30 has a connecting structure matched with the shell 11, and the other end of the adapter 30 has a connecting structure matched with other devices such as a sighting telescope and the like. Through the adapter 30, the eyepiece assembly 10 can be connected with other devices, that is, the observation instrument 100 can be connected with other devices to meet specific observation requirements.
[0044] In some embodiments of the present application, as shown in Figure 5 As shown, the target component to be connected by the eyepiece assembly 10 is the second eyepiece 40. After the eyepiece assembly 10 is connected and assembled with the second eyepiece 40, the lens installed on the body 20 of the observation instrument 100, the first eyepiece 12 in the eyepiece assembly 10, and the second eyepiece 40 together constitute an imaging light path to meet the observation requirements.
[0045] Optionally, in an embodiment of the present application, the observation instrument 100 includes the adapter 30, one end of the adapter 30 is connected to the second end of the shell 11 of the eyepiece assembly 10, and the other end of the adapter 30 is connected with a sighting telescope. The sighting telescope can be a visible light sighting telescope, an infrared sighting telescope, a laser sighting telescope, a holographic sighting telescope, and the like. It can be understood that the shell 11 can be connected to the observation instrument 100 through the first connecting structure, and can be connected with the sighting telescope through the second connecting structure. The observation instrument 100 configured with the sighting telescope can more accurately aim and observe the target, thereby improving the function expansion capability of the observation instrument 100 and the user's use experience.
[0046] The eyepiece assembly 10 configured by the observation instrument 100 provided in the embodiments of the present application includes the body 20, the eyepiece assembly 10, the second eyepiece 40, and / or the adapter 30; the first end of the shell 11 of the eyepiece assembly 10 is connected to the body 20, wherein the eyepiece assembly 10 is any of the eyepiece assemblies 10 described in the embodiments of the present application; one end of the second eyepiece 40 can be connected to the second end of the shell 11 of the eyepiece assembly 10; the adapter 30 has two ends penetrating through, and one end of the adapter 30 can be connected to the second end of the shell 11 of the eyepiece assembly 10. The eyepiece assembly 10 can be installed on the body 20 of the observation instrument 100, and the shell 11 can conveniently connect the target component with the eyepiece assembly 10, thereby improving the connection convenience and adaptation capability of the observation instrument 100 to the target component.
[0047] It is to be noted that, in the present text, the terms such as first and second, and the like, are used merely to differentiate one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between such entities or operations. Moreover, the terms "comprising", "containing", or any other variant thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements in the list, but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the statement "comprising a" does not exclude the existence of additional identical elements in the process, method, article, or apparatus that includes the stated element.
[0048] The above has described the embodiments of the present application in detail, and those skilled in the art can design and modify the device and its use mode according to the site construction condition within the scope of the present application.
[0049] Each of the embodiments in the present specification is described in a related manner, and the same or similar parts between the embodiments can be referred to each other. Each of the embodiments focuses on the difference from other embodiments.
[0050] The above is merely a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. An interchangeable eyepiece assembly comprising: include: The housing has a cavity extending through both ends, and the housing is provided with a first connecting structure for connecting the body of the observation instrument to the first end of the housing, and the housing is also provided with a second connecting structure for connecting the target component to the second end of the housing; The first eyepiece is disposed within the cavity of the housing.
2. The convertible eyepiece assembly of claim 1, wherein, The housing includes a first housing and a second housing, the first housing and the second housing are both through structures at both ends, and the first housing passes through the second housing; wherein, the first eyepiece is disposed in the cavity of the first housing, the first connecting structure is disposed in the first housing, and the second connecting structure is disposed in the second housing.
3. The convertible eyepiece assembly of claim 2, wherein, The housing is also provided with fasteners. The outer wall of the first housing has a first connecting hole, and the inner wall of the second housing has a second connecting hole. The fasteners pass through the first connecting hole and the second connecting hole.
4. The convertible eyepiece assembly of claim 1, wherein, The second connection structure is adapted to one end of the target component so that the target component can be connected to the housing; wherein the target component includes at least a second eyepiece and an adapter that extends through both ends.
5. The convertible eyepiece assembly of claim 1, wherein, The second connection structure is an adapter thread provided on the outer wall of the housing; the eyepiece assembly also includes a locking member, which is connected to the housing and can abut against the target component along the axial direction of the housing.
6. The convertible eyepiece assembly of claim 5, wherein, The locking member is provided with an internal thread that is compatible with the adapter thread, so that the locking member is threadedly connected to the housing.
7. The convertible eyepiece assembly of claim 1, wherein, The first eyepiece is threadedly connected to the housing, and the first eyepiece can be adjusted and moved axially relative to the housing.
8. The convertible eyepiece assembly of claim 1, wherein, The outer wall of the first eyepiece is provided with an inclined surface, and the housing is provided with a stop member, one end of which can abut against the inclined surface.
9. The convertible eyepiece assembly of claim 1, wherein, The outer wall of the first eyepiece is provided with a first stop surface, and the inner wall of the housing is provided with a second stop surface. An elastic element is provided between the first stop surface and the second stop surface, and the first stop surface, the elastic element, and the second stop surface are arranged sequentially along the axial direction of the first eyepiece. The elastic element abuts against the first stop surface and the second stop surface respectively.
10. The convertible eyepiece assembly of claim 1, wherein, A sealing element is provided between the outer wall of the first eyepiece and the inner wall of the housing.
11. A viewer, characterized by include: body; An eyepiece assembly, wherein the first end of the housing of the eyepiece assembly is connected to the body, wherein the eyepiece assembly is the eyepiece assembly according to any one of claims 1-8; A second eyepiece and / or an adapter; wherein one end of the second eyepiece can be connected to the second end of the housing of the eyepiece assembly; both ends of the adapter are through, and one end of the adapter can be connected to the second end of the housing of the eyepiece assembly.
12. The scope of claim 11, wherein, The observation instrument includes the adapter, one end of which is connected to the second end of the housing of the eyepiece assembly, and the other end of which is connected to a sight.