Infrared sighting telescope

Abstract

The utility model belongs to the technical field of optical instruments, and discloses an infrared sighting telescope. Comprising a casing, and an infrared objective lens, an infrared movement assembly, a battery assembly, a display screen assembly and an eyepiece which are sequentially mounted on the casing, wherein the eyepiece is provided with an eyepiece diopter adjusting mechanism; a cylinder assembly and a sliding sleeve-guide nail structure are adopted to realize accurate rotation-free diopter adjustment; the external battery unit is arranged to supply power, and the battery compartment is adopted as the negative electrode, so that compared with a traditional nested battery compartment scheme, the size of the battery assembly is reduced, and the battery assembly is more suitable for design of miniaturized products. And the waterproof design is carried out between the battery compartment circuit board and the battery compartment, so that the equipment is waterproof when the battery compartment cover is not mounted, and the damage to internal devices is effectively prevented.

Description

Technical Field

[0001] This utility model belongs to the field of optical instrument technology and relates to a multifunctional infrared aiming scope. Background Technology

[0002] Infrared sights, as an important night vision observation and aiming device, are widely used in military, security, and other fields. They achieve target identification and tracking in nighttime or low-light environments by receiving the infrared radiation of the target. However, current infrared sights suffer from the following structural problems:

[0003] (1) As the core component for direct observation, the eyepiece often relies on multi-stage gears or cam transmission for its diopter adjustment mechanism. This not only results in high processing costs and complicated assembly, but also easily causes the eyepiece to rotate during adjustment, affecting operational comfort and concealment.

[0004] (2) In terms of power supply and battery life, traditional infrared sights mostly rely on built-in non-replaceable batteries or external battery compartment nested structures. The former limits the ability to fight continuously, while the latter makes it difficult to miniaturize the whole machine due to the redundancy of the compartment size. In addition, the battery compartment sealing design is weak, and the circuit is easily damaged by condensation in a humid environment.

[0005] (3) Existing infrared sights often use rigid materials and fixed buckles for the goggles, which are difficult to fit the facial contours of different users. Long-term use can easily lead to buckle breakage or seal failure due to stress concentration, resulting in light leakage or water ingress, which seriously reduces the reliability of the equipment. In addition, in terms of the light leakage prevention design of the goggles, existing solutions mostly rely on manually adjustable light shields or fixed multi-layer light shields. The former is cumbersome to operate and difficult to respond quickly to tactical needs, while the latter cannot meet the light transmission needs during observation and the complete light blocking in the closed state, which poses a risk of revealing the user's position. Utility Model Content

[0006] The purpose of this invention is to provide an infrared aiming scope to solve at least one of the aforementioned technical problems.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] An infrared sight includes a housing, and an infrared objective lens, an infrared core assembly, a battery assembly, a display screen assembly, and an eyepiece, which are sequentially mounted on the housing.

[0009] Wherein: the eyepiece is provided with an eyepiece diopter adjustment mechanism, which includes: an eyepiece mounting flange, a focusing lens barrel, a diopter adjustment ring, an adjustment ring retainer, an eyecup assembly and a guide pin, and the eyepiece diopter adjustment mechanism is mounted on the housing through the eyepiece mounting flange;

[0010] The eyepiece mounting flange is fitted onto the outer circumferential surface of one end of the focusing lens barrel, and the two are in a sliding fit; the eyecup assembly is fixedly connected to the other end of the focusing lens barrel.

[0011] A radial threaded hole is provided through the circumferential surface of the eyepiece mounting flange, and a guide groove is provided along its axial direction on the circumferential surface of the focusing lens barrel; the guide pin is installed in the radial threaded hole of the eyepiece mounting flange, and the end of the guide pin extends out of the radial threaded hole and slides in cooperation with the guide groove of the focusing lens barrel.

[0012] The outer circumferential surface of the eyepiece mounting flange is provided with an external thread, and the inner circumferential surface of the diopter adjustment ring is provided with an internal thread. The diopter adjustment ring is sleeved on the outer circumference of the integral structure composed of the eyepiece mounting flange and the focusing lens tube, and the internal thread of the diopter adjustment ring is threadedly connected to the external thread of the eyepiece mounting flange.

[0013] The inner circumferential surface of the diopter adjustment ring is provided with a limiting inner convex ring along the circumferential direction, and the outer circumferential surface of the focusing lens barrel is provided with a limiting outer convex ring along the circumferential direction. The adjustment ring retainer is detachably and fixedly sleeved on the outer circumferential surface of the focusing lens barrel. An annular limiting groove is formed between the adjustment ring retainer, the limiting outer convex ring, and the outer circumferential surface of the focusing lens barrel to accommodate the limiting inner convex ring and limit the limiting inner convex ring.

[0014] Furthermore, the eye patch assembly includes an eye patch mounting ring and an eye patch, one end of which is threadedly connected to the focusing lens barrel, and the other end is used to mount the eye patch.

[0015] Furthermore, the goggles assembly also includes a goggles pressure ring fitted onto the outer circumferential surface of the goggles mounting ring and the goggles connection portion.

[0016] Furthermore, an outer mounting protrusion is provided on the outer circumferential surface of the eye mask mounting ring, and an inner mounting protrusion is provided on the inner circumferential surface of the mounting end of the eye mask. An annular mounting groove is formed between the eye mask pressure ring, the outer mounting protrusion, and the outer circumferential surface of the eye mask mounting ring to accommodate and limit the inner mounting protrusion.

[0017] Furthermore, the adjusting ring retainer is flush with the end of the focusing lens barrel near the eyecup, and the end of the eyecup pressure ring away from the eyecup abuts against the ends of the focusing lens barrel and the adjusting ring retainer.

[0018] Furthermore, the adjusting ring retaining ring is threaded onto the outer circumferential surface of the focusing lens barrel and fixed by a stop screw.

[0019] Furthermore, sealing rings are provided on the contact surfaces of the eyepiece mounting flange and the focusing lens barrel, and on the contact surfaces of the adjusting ring retainer and the diopter adjusting ring.

[0020] Furthermore, the battery assembly includes an internal battery and an external battery unit. The internal battery is fixed inside the housing, and the external battery unit is detachably connected to the housing.

[0021] Furthermore, the external battery unit is disposed between the infrared core assembly and the display screen assembly. The external battery unit includes an external battery, an external battery compartment for accommodating the external battery, an external battery cover and an external battery compartment circuit board respectively disposed at both ends of the external battery compartment, a sealing ring is disposed between the external battery cover and the external battery compartment, and a sealing gasket is disposed between the external battery compartment circuit board and the external battery compartment.

[0022] Furthermore, a Type-C component, a rotary encoder component, and a WiFi component are also provided on the housing between the infrared core assembly and the display assembly.

[0023] More preferably, the external battery unit, Type-C component, and housing are connected by threads, while the rotary encoder component, WiFi component, and housing are connected by screws. Each component is sealed to the housing using a sealing ring or silicone compression to ensure waterproofing. The internal battery can be charged and the product powered via the Type-C port. The external battery unit is installed perpendicular to the direction of ballistic impact experienced by the scope during operation, and a shock-absorbing pad is placed between the battery and the battery compartment to ensure stable power supply to the scope during operation and prevent power outages.

[0024] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0025] The components of the eyepiece diopter adjustment mechanism of this invention are all cylindrical parts, which are simple to manufacture, easy to ensure machining accuracy, and easy to assemble. The movement and adjustment of the lens are achieved by using a sliding sleeve structure and a guide structure with guide grooves and guide pins, limiting the radial rotation of the focusing barrel and solving the problem of the eyecup rotating with the diopter adjustment ring. The eyecup mounting ring is threaded to the focusing barrel, and the eyecup pressure ring and the eyecup mounting ring clamp the eyecup in the middle. Compared with the conventional slot connection, this improves the reliability of the eyepiece and effectively prevents the eyecup from easily falling off during use. Multiple sealing rings are used to achieve multiple seals for the eyepiece, improving its waterproof rating and also increasing the damping feel when adjusting the diopter.

[0026] This invention features an internal battery and an external battery unit to power the product. The external battery can be a single, universally compatible rechargeable 18650 battery and employs a non-polar design, meaning the product can operate normally without needing to distinguish between positive and negative terminals. The product also has charging and external power supply functions, allowing charging of the internal battery and power supply to the product via a Type-C port.

[0027] This utility model's external battery unit structure uses the battery compartment as the negative electrode. Compared to the traditional nested battery compartment design, it reduces the size of the battery assembly, making it more suitable for miniaturized product designs. Furthermore, a waterproof design is incorporated between the battery compartment circuit board and the battery compartment itself, ensuring the device remains waterproof even without the battery compartment cover installed, effectively preventing damage to internal components.

[0028] This utility model relates to a light-blocking goggle, which prevents the wearer's position from being revealed during combat. The goggle features a single-layer opening and closing structure. The goggle body is made of elastic material; when pressure is applied, the goggle body opens four fan-shaped flaps, allowing unobstructed vision and preventing light leakage during aiming. After aiming, the elastic force restores its deformation, closing the flaps. The light-blocking effect after closing is identical to before use. This goggle effectively blocks external light interference while preventing internal light leakage, and is convenient to use.

[0029] The preferred mechanical interface of this invention uses the same 30mm tube as that of a white light sight, which can effectively ensure the consistency of the optical axis between the product and the firing device, as well as the compatibility of the clamp with the white light sight. Attached Figure Description

[0030] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0031] Figure 1 This is a schematic diagram of the overall structure of an infrared sight.

[0032] Figure 2 This is a schematic diagram of the exploded structure of an infrared sight.

[0033] Figure 3 This is a schematic diagram of the assembly structure of an infrared sight.

[0034] Figure 4 This is a schematic diagram of the overall structure of the eyepiece diopter adjustment mechanism.

[0035] Figure 5 This is a cross-sectional schematic diagram of the eyepiece diopter adjustment mechanism.

[0036] Figure 6 This is an exploded view of the eyepiece diopter adjustment mechanism.

[0037] Figure 7 This is a cross-sectional schematic diagram of an external battery unit.

[0038] Figure 8 This is a schematic diagram of the exploded structure of an external battery unit.

[0039] Figure 9A partial structural diagram of an infrared sight. Figure 1 .

[0040] Figure 10 A partial structural diagram of an infrared sight. Figure 2 .

[0041] Figure 11 This is a schematic diagram of the eye mask structure (where a is the cc cross-section of b, and c is the bb cross-section of b).

[0042] in:

[0043] 1—Eyepiece, 11—Eyepiece mounting flange, 1101—Radial threaded hole, 12—Sealing ring I, 13—Focusing lens barrel, 1301—Guide groove, 1302—Limiting outer convex ring, 14—Guide pin, 15—Sealing ring II, 16—Diopter adjustment ring, 1601—Limiting inner convex ring, 17—Sealing ring III, 18—Adjusting ring retainer, 19—Eyecup pressure ring, 110—Eyecup mounting ring, 112—Stop screw.

[0044] 2—Eye mask assembly, 3—Display assembly, 4—Button assembly, 5—Casing, 6—Infrared mechanism assembly, 7—Infrared objective lens, 8—Objective lens cover, 91—External battery unit, 92—Internal battery, 93—WiFi assembly, 94—Rotary encoder assembly, 95—Type-C assembly.

[0045] 911—External battery cover, 912—External battery, 913—Battery compartment sealing ring, 914—External battery compartment, 915—External battery compartment sealing gasket, 916—External battery compartment circuit board, 917—Pan head screw.

[0046] 100—Scope mount, 101—Picatinny rail. Detailed Implementation

[0047] To facilitate understanding of this utility model, the following description will be more comprehensive and detailed in conjunction with the accompanying drawings and preferred embodiments. However, the scope of protection of this utility model is not limited to the following specific embodiments.

[0048] Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by those skilled in the art. The technical terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the scope of protection of this invention.

[0049] Example 1

[0050] See Figures 1-3This embodiment provides an infrared sight, including a housing 5, and an infrared objective lens 7, an infrared core assembly 6, a battery assembly, a display screen assembly 3, and an eyepiece 1, which are sequentially mounted on the housing 5. The infrared objective lens 7 and the eyepiece are located at opposite ends of the housing 5, while the infrared core assembly 6, battery assembly, display screen assembly 3, etc., are located inside the housing 5. An objective lens cover 8 is provided at the infrared objective lens 7, and the outer surface of the housing 5 is also provided with a rotary encoder assembly 94, a Type-C assembly 95, a WiFi assembly 93, and a button assembly 4.

[0051] See Figures 4-6 The eyepiece 1 is equipped with an eyepiece diopter adjustment mechanism, which includes: an eyepiece mounting flange 11, a focusing lens barrel 13, a diopter adjustment ring 16, an adjustment ring retainer 18, an eyecup assembly 2, and a guide pin 14. The eyepiece diopter adjustment mechanism is mounted on the housing 5 via the eyepiece mounting flange 11.

[0052] In this embodiment, the eyepiece mounting flange 11 is sleeved on the outer peripheral surface of one end of the focusing lens barrel 13, and the two are in sliding fit; the eyecup assembly 2 is fixedly connected to the other end of the focusing lens barrel 13.

[0053] In this embodiment, two radial threaded holes 1101 are provided through the circumferential surface of the eyepiece mounting flange 11. The two radial threaded holes 1101 are evenly distributed circumferentially on the circumferential surface. Two guide grooves 1301 are provided on the circumferential surface of the focusing lens barrel 13, which are symmetrically distributed circumferentially. Guide pins 14 are installed in the radial threaded holes 1101 of the eyepiece mounting flange 11, and the ends of the guide pins 14 extend out of the radial threaded holes 1101 and slide in contact with the guide grooves 1301 of the focusing lens barrel 13. In the assembled state, the eyepiece mounting flange 11 slides in contact with the two guide pins 14 and the corresponding two guide grooves 1301 through the two radial threaded holes 1101.

[0054] In this embodiment, the outer circumferential surface of the eyepiece mounting flange 11 is provided with an external thread, and the inner circumferential surface of the diopter adjustment ring 16 is provided with an internal thread. The diopter adjustment ring 16 is sleeved on the outer circumference of the integral structure composed of the eyepiece mounting flange 11 and the focusing lens barrel 13, and the internal thread of the diopter adjustment ring 16 is threadedly connected to the external thread of the eyepiece mounting flange 11.

[0055] In this embodiment, a limiting inner convex ring 1601 is provided on the inner circumferential surface of the diopter adjustment ring 16, and a limiting outer convex ring 1302 is provided on the outer circumferential surface of the focusing lens barrel 133. The adjustment ring retainer 18 is detachably and fixedly sleeved on the outer circumferential surface of the focusing lens barrel 133. An annular limiting groove is formed between the adjustment ring retainer 18, the limiting outer convex ring 1302, and the outer circumferential surface of the focusing lens barrel 13 to accommodate the limiting inner convex ring 1601 and limit the limiting inner convex ring 1601.

[0056] In this embodiment, the adjusting ring retainer 18 is detachably and fixedly fitted as follows: the adjusting ring retainer 18 is threaded onto the outer circumferential surface of the focusing lens barrel 13 and fixed by a locking screw 112. Specifically, an external thread is provided on the outer circumferential surface of the focusing lens barrel 13, and an internal thread is provided on the inner circumferential surface of the adjusting ring retainer 18; the two are threadedly connected. In the assembled state, the adjusting ring retainer 18 is screwed until its end contacts the limiting inner protruding ring 1601 of the diopter adjustment ring 16, until the annular limiting groove just accommodates the limiting inner protruding ring 1601, thereby axially limiting the diopter adjustment ring 16.

[0057] In this embodiment, the eyecup assembly 2 includes an eyecup mounting ring 110 and an eyecup. One end of the eyecup mounting ring 110 is threadedly connected to the focusing lens barrel 13, and the other end is used to mount the eyecup. Specifically, the outer circumferential surface of the mounting end of the eyecup mounting ring 110 is provided with an external thread, and the inner circumferential surface of the mounting end of the focusing lens barrel 13 is provided with an internal thread. The two are connected by threaded engagement.

[0058] In this embodiment, the goggles assembly 2 further includes a goggles pressure ring 19 fitted onto the outer circumferential surface of the goggles mounting ring 110 and the goggles mounting portion. Specifically, an outer mounting protrusion ring is provided circumferentially on the outer circumferential surface of the goggles mounting ring 110, and an inner mounting protrusion ring is provided circumferentially on the inner circumferential surface of the goggles mounting end. An annular mounting groove is formed between the goggles pressure ring 19, the outer mounting protrusion ring, and the outer circumferential surface of the goggles mounting ring 110 to accommodate the inner mounting protrusion ring and to axially limit the inner mounting protrusion ring. More specifically, an axial boss extending axially along the goggles direction is provided at the end edge of the goggles pressure ring 19. In the assembled state, the axial boss contacts the outer circumference of the goggles, further limiting the goggles radially.

[0059] In this embodiment, the adjusting ring retainer 18 is flush with the end of the focusing lens barrel 13 near the eyecup, and the end of the eyecup retainer 19 away from the eyecup abuts against the ends of the focusing lens barrel 13 and the adjusting ring retainer 18. In the assembled state, the eyecup mounting ring 110 can be tightened by the threaded configuration of the eyecup mounting ring 110 and the focusing lens barrel 13 until the end of the eyecup retainer 19, which is fitted on the outer circumference of the eyecup mounting ring 110, abuts against the ends of the focusing lens barrel 13 and the adjusting ring retainer 18. This contact between the components further ensures the overall structural stability.

[0060] In this embodiment, sealing rings I 12 and II 15 are provided on the contact surface between the eyepiece mounting flange 11 and the focusing lens barrel 13. Sealing ring III 17 is provided on the contact surface between the adjusting ring retainer 18 and the diopter adjusting ring 16. In the assembled state, this structure ensures waterproofing while increasing the damping feel when adjusting the diopter.

[0061] Working principle:

[0062] During diopter adjustment, the diopter adjustment ring 16 rotates in a spiral motion. The annular limiting groove axially limits the diopter adjustment ring 16 through the limiting inner convex ring 1601. The eyepiece mounting flange 11 is installed and fixed on the specific application device. The focusing lens tube 13 does not rotate due to the guiding action of the guide pin 14 and the guide groove 1301. This causes the focusing lens tube 13 in the eyepiece mounting flange 11 to move back and forth without rotating. The eyecup does not rotate radially during the back and forth movement of the focusing lens tube 13.

[0063] In a specific embodiment, such as Figure 11 As shown, this embodiment preferably employs a light-leakage-proof goggle structure, achieving concealed combat functionality through a single-layer opening and closing design. Specifically, the goggle is configured with a single-layer opening and closing structure. The goggle body is made of elastic material. When pressure is applied, the goggle body drives the four fan-shaped opening and closing curtains to open, allowing unobstructed vision and preventing light leakage during observation and aiming. After observation and aiming are completed, the opening and closing curtains close due to the elastic force restoring deformation. The light-leakage-proof effect after closure is no different from before use. This device utilizes bidirectional optical path isolation technology to eliminate external glare interference while achieving complete sealing of the internal light source, combining optical protection functionality with ease of battlefield operation.

[0064] In this embodiment, the battery assembly includes an internal battery 92 and an external battery unit 91. The internal battery 92 is fixed inside the housing 5, and the external battery unit 91 is connected to the housing 5 with a detachable structure.

[0065] like Figure 7 and 8 The diagram shows the specific structure of the external battery unit 91 in this embodiment. The external battery unit 91 includes an external battery 912, an external battery compartment 914 for accommodating the external battery 912, an external battery cover 911 and an external battery compartment circuit board 916 respectively disposed at both ends of the external battery compartment 914, a battery compartment sealing ring 913 disposed between the external battery cover 911 and the external battery compartment 914, the external battery compartment circuit board 916 being fixed to the end of the external battery compartment 914 by pan head screws 917, and an external battery compartment sealing gasket 915 disposed between the external battery compartment circuit board 916 and the external battery compartment 914.

[0066] In this embodiment, the external battery 912 can be a single universal rechargeable 18650 battery, and it adopts a non-polarity design, meaning that the product can work normally without distinguishing between positive and negative terminals. This product also has charging and external power supply functions, allowing charging of the internal battery and power supply to the product via a Type-C port.

[0067] like Figure 8 and 9As shown, a Type-C component 95, a rotary encoder component 94, and a WiFi component 93 are also provided on the housing 5 between the infrared core component 6 and the display component 3.

[0068] In a specific embodiment, the external battery unit 91, the Type-C component 95, and the housing 5 are connected by threads, while the rotary encoder component 94, the WiFi component 93, and the housing 5 are connected by screws. Each component is sealed to the housing 5 using a sealing ring or silicone compression to ensure waterproofing. The internal battery can be charged and the product powered via the Type-C port. The external battery component 91 is installed perpendicular to the direction of ballistic impact experienced by the scope during operation, and a shock-absorbing pad is provided between the battery and the battery compartment to ensure stable power supply to the scope during operation and prevent power outages.

[0069] When this utility model is used, the rotating encoding component 94 can be rotated to realize electronic magnification or reduction of the image in the eyepiece, the rotation of the infrared objective lens 7 realizes the adjustment of the object distance, and the rotation of the eyepiece realizes the adjustment of the diopter.

[0070] In this embodiment, the button assembly 4 can be disposed on the outer wall of the housing 5 for easy control.

[0071] In this embodiment, the infrared objective lens 7 is compatible with focal lengths of 35mm, 50mm, and 75mm, ensuring the effective range of the aiming scope. The infrared focal plane detector, a key component of the infrared core assembly 6, converts the infrared signals collected by the infrared objective lens 7 into electrical signals via a photoelectric conversion circuit. These electrical signals are then output to the image processing chip on the image processing board. After non-uniform correction and linear mapping, the image processing chip outputs digital video, which is connected to an OLED display screen via a video transmission cable. The viewer observes the infrared video image through the eyepiece. The focus can be manually adjusted according to different effective ranges.

[0072] like Figure 3 The diagram shows the assembly structure of the infrared sight in this embodiment, including the infrared sight, the sight bracket 100, and the Picatinny rail 101. The infrared sight is the one described in this embodiment, and the sight bracket 100 and Picatinny rail 101 secure it to the object where the infrared sight will be used. In this embodiment, to facilitate the installation of the infrared sight and ensure its stability, clamping portions for mounting and fixing the sight bracket 100 are provided on the housing 5 at both ends of the external battery assembly, and these clamping portions are preferably columnar structures with uniform cross-sectional dimensions.

[0073] In this embodiment, the diameter of the housing 5 is 30mm, and the mechanical interface of the scope bracket 100 adopts the same adapter size, which can effectively ensure the optical axis consistency between the product and the firing device and the clamp compatibility with the white light scope.

[0074] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the scope of this utility model.

Claims

1. An infrared sight, characterized in that, Includes a housing, and sequentially mounted on the housing are an infrared objective lens, an infrared core assembly, a battery assembly, a display assembly, and an eyepiece; Wherein: the eyepiece is provided with an eyepiece diopter adjustment mechanism, which includes: an eyepiece mounting flange, a focusing lens barrel, a diopter adjustment ring, an adjustment ring retainer, an eyecup assembly and a guide pin, and the eyepiece diopter adjustment mechanism is mounted on the housing through the eyepiece mounting flange; The eyepiece mounting flange is fitted onto the outer circumferential surface of one end of the focusing lens barrel, and the two are in a sliding fit; the eyecup assembly is fixedly connected to the other end of the focusing lens barrel. A radial threaded hole is provided through the circumferential surface of the eyepiece mounting flange, and a guide groove is provided along its axial direction on the circumferential surface of the focusing lens barrel; the guide pin is installed in the radial threaded hole of the eyepiece mounting flange, and the end of the guide pin extends out of the radial threaded hole and slides in cooperation with the guide groove of the focusing lens barrel. The outer circumferential surface of the eyepiece mounting flange is provided with an external thread, and the inner circumferential surface of the diopter adjustment ring is provided with an internal thread. The diopter adjustment ring is sleeved on the outer circumference of the integral structure composed of the eyepiece mounting flange and the focusing lens tube, and the internal thread of the diopter adjustment ring is threadedly connected to the external thread of the eyepiece mounting flange. The inner circumferential surface of the diopter adjustment ring is provided with a limiting inner convex ring along the circumferential direction, and the outer circumferential surface of the focusing lens barrel is provided with a limiting outer convex ring along the circumferential direction. The adjustment ring retainer is detachably and fixedly sleeved on the outer circumferential surface of the focusing lens barrel. An annular limiting groove is formed between the adjustment ring retainer, the limiting outer convex ring, and the outer circumferential surface of the focusing lens barrel to accommodate the limiting inner convex ring and limit the limiting inner convex ring.

2. The infrared sight as described in claim 1, characterized in that, The eye patch assembly includes an eye patch mounting ring and an eye patch. One end of the eye patch mounting ring is threadedly connected to the focusing lens barrel, and the other end is used to install the eye patch.

3. The infrared sight as described in claim 2, characterized in that, The goggles assembly also includes a goggles pressure ring fitted onto the outer circumference of the goggles mounting ring and the goggles mounting area.

4. The infrared sight as described in claim 3, characterized in that, An outer mounting protrusion is provided on the outer circumferential surface of the eye mask mounting ring, and an inner mounting protrusion is provided on the inner circumferential surface of the mounting end of the eye mask. An annular mounting groove is formed between the eye mask pressure ring, the outer mounting protrusion, and the outer circumferential surface of the eye mask mounting ring to accommodate and limit the inner mounting protrusion.

5. The infrared sight as described in claim 3 or 4, characterized in that, The adjustment ring retainer is flush with the end of the focusing lens barrel near the eyecup and abuts against the end of the eyecup pressure ring away from the eyecup.

6. The infrared sight as described in claim 1, characterized in that, The adjusting ring retaining ring is threaded onto the outer circumferential surface of the focusing lens barrel and is fixed by a locking screw.

7. The infrared sight as described in claim 1, characterized in that, Sealing rings are provided on the contact surfaces of the eyepiece mounting flange and the focusing lens barrel, and on the contact surfaces of the adjusting ring retainer and the diopter adjusting ring.

8. The infrared sight as described in claim 1, characterized in that, The battery assembly includes an internal battery and an external battery unit. The internal battery is fixed inside the casing, and the external battery unit is detachably connected to the casing.

9. The infrared sight as described in claim 8, characterized in that, The external battery unit is disposed between the infrared core assembly and the display screen assembly. The external battery unit includes an external battery, an external battery compartment for accommodating the external battery, an external battery cover and an external battery compartment circuit board respectively disposed at both ends of the external battery compartment, a battery compartment sealing ring disposed between the external battery cover and the external battery compartment, and an external battery compartment sealing gasket disposed between the external battery compartment circuit board and the external battery compartment.

10. An infrared sight according to claim 1, characterized in that, The housing between the infrared core assembly and the display assembly also includes a Type-C component, a rotary encoder component, and a WiFi component.

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