Dual-light fusion night vision device

Abstract

The invention provides a dual-light fusion night vision device, which comprises a right display lens group, a left display lens group and a bridge frame assembly, the right low-light objective lens group is arranged on the right lens barrel along the right low-light optical axis; the infrared lens group is arranged on the right lens barrel along the infrared light axis; the left display lens group comprises a left lens; the left low-light objective lens group is arranged on the left lens barrel along the left low-light optical axis; the bridge assembly is connected with the right bridge interface piece and the left bridge interface piece in the mode that the right low-light optical axis is parallel to the left low-light optical axis. According to the invention, the right display lens group uses low-light and infrared fusion and has the advantage of dual-spectrum fusion imaging, and the right display lens group and the left display lens group are connected through the bridge assembly, so that the right display lens group has the advantage of stereo imaging and realizes a binocular stereo discrimination visual function.

Description

Dual-light fusion night vision device Technical Field

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

[0002] The low-light-level night vision system uses an image intensifier as its core component, amplifying faint moonlight, starlight, atmospheric glow, and other reflections from the target scene to produce a bright scene image observable to the human eye. A low-light-level image intensifier is a photoelectric device consisting of an intensifier tube and a high-voltage power supply encapsulated through a potting process. The imaging principle is that a photocathode converts an optical image into an electronic image. The electron-optical imaging system (electrode system) transmits the electronic image to a fluorescent screen, enhancing the electron energy and scaling the geometric dimensions of the electronic image. The fluorescent screen then completes the electro-optical conversion, converting the electronic image into a visible light image. The advantage lies in its continuous photoelectric imaging surface, which offers high resolution, clear imaging, and visual capabilities close to those of the human eye.

[0003] An infrared thermal imager converts the invisible infrared energy emitted by an object into a visible thermal image. The different colors on the thermal image represent the different temperatures of the object being measured. By viewing the thermal image, one can observe the overall temperature distribution of the target being measured, study the target's heating conditions, and thus make decisions about the next step. The working principle of a modern thermal imager is to use photoelectric equipment to detect and measure radiation and establish a correlation between radiation and surface temperature. All objects above absolute zero (-273°C) emit infrared radiation. The thermal imager uses an infrared detector and an optical imaging objective lens to receive the infrared radiation energy distribution pattern of the target being measured and reflect it onto the photosensitive element of the infrared detector, thereby obtaining an infrared thermal image. The advantages of infrared thermal imagers are their ability to distinguish temperature differences, the ability to display multiple thermal imaging modes through algorithms, and the ability to overlay and display sensor information.

[0004] Most existing night vision products are single-mode low-light-level night vision or single-mode infrared night vision. Each has its own advantages and disadvantages, and has the disadvantages of relatively poor stereoscopic vision and relatively low product integration. Technical issues

[0005] In order to solve the existing technical problems, the present application provides a dual-light fusion night vision device that can realize the dual-light fusion imaging display of low light and infrared, and improve stereoscopic vision. Technical Solutions

[0006] To achieve the above objectives, the technical solution of the embodiment of the present application is implemented as follows:

[0007] The present application provides a dual-light fusion night vision device, comprising a right display lens group, a left display lens group, and a bridge assembly, wherein the right display lens group and the left display lens group are detachably connected via the bridge assembly, and the right display lens group comprises:

[0008] The right lens barrel defines a right low-light optical axis and an infrared optical axis, wherein the infrared optical axis is arranged parallel to the low-light optical axis;

[0009] a right low-light-level objective lens assembly, disposed on the right lens barrel along the right low-light-level optical axis, for low-light-level optical transmission and imaging to obtain a low-light-level image;

[0010] an infrared lens assembly, arranged on the right lens barrel along the infrared optical axis, for infrared optical transmission and imaging to obtain an infrared image;

[0011] The left display mirror assembly includes:

[0012] The left lens barrel defines a left low-light optical axis;

[0013] a left low-light-level objective lens assembly, disposed on the left lens barrel along the left low-light-level optical axis, for low-light-level optical transmission and imaging to obtain a low-light-level image;

[0014] The bridge assembly connects the right display lens group and the left display lens group in a manner that the right low-light optical axis is parallel to the left low-light optical axis.

[0015] In one embodiment, the bridge assembly includes a bridge body, and a right bridge support shaft and a left bridge support shaft with parallel axes extend from both sides of the bridge body;

[0016] The right bridge interface component includes a right bridge interface body and a right bridge adjustment screw, and the right bridge interface body is installed on the right lens barrel;

[0017] The left bridge interface component includes a left bridge interface body and a left bridge adjustment screw, and the left bridge interface body is installed on the left lens barrel;

[0018] The right bridge interface body is rotatably sleeved on the right bridge support shaft, and the right bridge adjustment screw is screwed into the right bridge interface body perpendicular to the right bridge support shaft to lock the angle of the right display lens group around the right bridge support shaft;

[0019] The left bridge interface body can be rotatably inserted into the left bridge support shaft, and the left bridge adjustment screw is screwed into the left bridge interface body perpendicular to the left bridge support shaft to lock the angle of the left display lens group around the left bridge support shaft.

[0020] In one embodiment, the bridge assembly further includes a bridge right-rotating shaft pressure plate and a bridge left-rotating shaft pressure plate, and the bridge right-rotating shaft pressure plate and the bridge left-rotating shaft pressure plate are installed on the bridge body;

[0021] The right bridge shaft pressure plate is coaxially provided with a right pressure plate shaft corresponding to the right bridge support shaft. The right bridge support shaft and the right pressure plate shaft are respectively inserted into the right bridge connection hole on the right bridge interface body from both ends. The right bridge adjustment screw is screwed into the right adjustment screw hole which is perpendicular to and passes through the right bridge connection hole.

[0022] The left bridge frame rotating shaft pressure plate is coaxially provided with a left pressure plate rotating shaft corresponding to the left bridge frame supporting rotating shaft. The left bridge frame supporting rotating shaft and the left pressure plate rotating shaft are respectively inserted into the left bridge frame connecting hole on the left bridge frame interface body from both ends. The left bridge frame adjusting screw is screwed into the left adjusting screw hole which is vertical and passes through the left bridge frame connecting hole.

[0023] In one embodiment, the bridge assembly also includes a right pressure plate pin, a left pressure plate pin, a right pressure plate fixing screw and a left pressure plate fixing screw; the right rotating shaft pressure plate of the bridge is rotatably installed on the right rear side of the bridge body through the right pressure plate pin, and is locked to the bridge body through the right pressure plate fixing screw; the left rotating shaft pressure plate of the bridge is rotatably installed on the left rear side of the bridge body through the left pressure plate pin, and is locked to the bridge body through the left pressure plate fixing screw.

[0024] In one embodiment, the right supporting shaft of the bridge frame and the right pressure plate shaft are respectively provided with shaft gaskets, and abut against the two ends of the right bridge frame connecting hole; the left supporting shaft of the bridge frame and the left pressure plate shaft are respectively provided with shaft gaskets, and abut against the two ends of the left bridge frame connecting hole.

[0025] In one embodiment, a bridge adapter interface for external connection is provided on the top of the bridge body; a bridge function knob is provided on the bridge body, and bridge function buttons are respectively provided on the left and right sides of the top of the bridge body, and the bridge function knob and the bridge function buttons are used to control and adjust the right display mirror group and the left display mirror group; bridge function windows for external sensing and internal information transmission are respectively provided on both sides of the front end of the bridge body.

[0026] In one embodiment, the left display lens assembly further includes a left eyepiece adjustment flange, and the left eyepiece assembly is adjustably mounted on the left lens barrel via the left eyepiece adjustment flange.

[0027] In one embodiment, the left display lens group also includes a left low-light image intensifier and a clamping ring. The left low-light image intensifier is arranged between the left low-light objective lens group and the left eyepiece group along the left low-light optical axis. The clamping ring is threadedly connected to the left lens barrel to press the left low-light image intensifier into the left lens barrel.

[0028] In one embodiment, the right lens barrel includes a front cover plate and a barrel body, the front cover plate is installed at the front end opening of the barrel body, and the right low-light objective lens group and the infrared lens group are installed on the front cover plate.

[0029] In one embodiment, the infrared lens group includes an infrared objective lens, an infrared objective lens adjustment flange and an infrared imaging assembly arranged along the infrared optical axis. The infrared objective lens is fixed in the infrared objective lens adjustment flange, and the infrared objective lens adjustment flange is adjustably and movably installed on the front cover. By moving the infrared objective lens adjustment flange on the end face perpendicular to the infrared optical axis, the infrared objective lens can be driven to move, thereby realizing the adjustment of the infrared imaging position.

[0030] In one embodiment, the right display lens group further includes an image intensifier bracket, which is arranged at the rear end of the right low-light level objective lens group along the right low-light level optical axis and is adjustably connected to the front cover plate, and a right low-light level image intensifier is detachably installed in the image intensifier bracket along the right low-light level optical axis.

[0031] In one embodiment, the image intensifier bracket includes a mounting tube, an adjusting screw, an image combiner and an elastic member. A right low-light-level image intensifier is mounted in the mounting tube. The two ends of the adjusting screw along the right low-light-level optical axis are respectively connected to the front cover plate and the mounting tube through reverse threads, so that when the adjusting screw is rotated, the mounting tube and the front cover plate move toward or away from each other along the right low-light-level optical axis.

[0032] In one embodiment, the right display lens group also includes a display component connected to the infrared lens group signal, the image combiner is arranged between the right low-light image intensifier and the eyepiece group along the right low-light optical axis, and the display component is arranged on one side of the image combiner and connected to the infrared lens group to display the infrared image.

[0033] In one embodiment, the display component includes a display screen and a connecting cable, and the infrared lens group transmits the infrared image to the display screen through the connecting cable. The display screen is larger than the display area used to display the infrared image, so that the position of the display area can be adjusted on the display screen. Beneficial effects

[0034] The dual-light fusion night vision device provided by the embodiment of the present application has at least the following beneficial effects: the dual-light fusion night vision device provided by the present application, the right display mirror group uses a solution of fusing low-light and infrared dual optical paths, obtains the visual effect of low-light and infrared fusion imaging, has the advantage of dual-spectrum fusion imaging, strong recognition ability, and greatly improved user experience; the right display mirror group and the left display mirror group are connected by a bridge assembly, have the advantage of left and right eye stereoscopic imaging, and realize binocular stereoscopic recognition visual function. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] FIG1 is a schematic diagram of the three-dimensional structure of a dual-light fusion night vision device according to an embodiment of the present application;

[0036] FIG2 is a schematic diagram of the three-dimensional structure of the right display lens assembly of the dual-light fusion night vision device in FIG1 ;

[0037] FIG3 is a schematic diagram of the exploded structure of the right display lens assembly in FIG2 ;

[0038] FIG4 is a further exploded structural diagram of the right display lens assembly in FIG3 after removing the right bridge interface component;

[0039] FIG5 is a schematic diagram of the exploded structure of the optical device in FIG3 ;

[0040] FIG6 is a schematic diagram of the assembly structure of FIG5;

[0041] FIG7 is a schematic diagram of a cross-sectional optical path of FIG6 ;

[0042] FIG8 is a schematic diagram of a normal fusion image of low-light-level imaging and infrared thermal imaging;

[0043] FIG9 is a schematic diagram of a fused image showing the overlap deviation of low-light-level imaging and infrared thermal imaging;

[0044] FIG10 is a schematic diagram of the three-dimensional structure of the left display lens assembly of the dual-light fusion night vision device in FIG1 ;

[0045] FIG11 is a schematic diagram of the exploded structure of the left display mirror assembly in FIG10 after removing the left bridge interface member;

[0046] FIG12 is an enlarged three-dimensional structural diagram of the bridge assembly of the dual-light fusion night vision device in FIG1 from another angle;

[0047] FIG13 is a schematic diagram of the exploded structure of the dual-light fusion night vision device in FIG1 .

[0048] The components in the figure are numbered as follows:

[0049] right display lens group 10;

[0050] Right lens barrel 11, right low-light-level objective lens assembly 12, infrared lens assembly 13, right eyepiece assembly 14, right bridge interface 15, image intensifier bracket 16, display assembly 17, right low-light-level image intensifier 18, main control board 19;

[0051] Front cover 111, barrel 112, front cover sealing ring 113, eyepiece end sealing foam pad 114, bridge interface sealing ring 115;

[0052] Micro-mirror hole 1111, infrared mirror hole 1112, threaded interface 1113, positioning notch 1114;

[0053] Infrared objective lens 131, infrared objective lens adjustment flange 132, infrared imaging assembly 133, infrared objective lens fixing screw 134;

[0054] Right eyepiece lens assembly 141, right eyepiece hand wheel 142;

[0055] Right bridge interface body 151, right bridge adjustment screw 152; right bridge connection hole 1511, right adjustment screw hole 1512;

[0056] Installing tube 161, adjusting screw ring 162, image combiner 163, elastic member 164;

[0057] The barrel has threads 1611 and lugs 1613;

[0058] Display screen 171, connecting cable 172; display area 1711;

[0059] left display lens group 20;

[0060] Left lens barrel 21, left low-light level objective lens assembly 22, left eyepiece assembly 23, left low-light level image intensifier 24, left bridge interface 25, left eyepiece adjustment flange 26, gasket 27, and clamping ring 28;

[0061] Left bridge interface body 251, left bridge adjustment screw 252; left bridge connection hole 2511, left adjustment screw hole 2512; bridge assembly 30;

[0062] Bridge body 31, bridge right shaft pressure plate 32, bridge left shaft pressure plate 33, right pressure plate pin 34, left pressure plate pin 35, right pressure plate set screw 36, left pressure plate set screw 37, shaft gasket 38, shaft sealing ring 39;

[0063] Bridge right support shaft 311, bridge left support shaft 312, bridge adapter interface 313, bridge function knob 314, bridge function button 315, bridge function window 316;

[0064] Right pressure plate rotating shaft 321, left pressure plate rotating shaft 331;

[0065] Fusion image 40; low-light image 41 and infrared image 42;

[0066] Dual-light fusion night vision device 100. Modes for Carrying Out the Invention

[0067] The technical solution of this application is further elaborated in detail below with reference to the accompanying drawings and specific embodiments.

[0068] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are intended only to describe specific embodiments and are not intended to limit the implementation of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0069] In the description of this application, it should be understood that the terms "center," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting this application. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0070] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0071] The present application provides a dual-light fusion night vision device that can be installed and used by the user through a helmet and accessories. It has strong target identification and information display functions at night or in low visibility environments. The left and right eyes display independently. Compared with conventional single-tube monocular and single-tube binocular night vision devices, it has better stereoscopic vision capabilities and better target distance identification capabilities. As an integrated product solution, the dual-light fusion night vision device of the present application can obtain the characteristics of clear imaging, high resolution, and low display latency of a low-light night vision device, and can also integrate the advantages of temperature difference target identification and integrated information display of an infrared thermal imager, further expanding the efficiency of target search and increasing the ability to identify and distinguish threats and display information superposition.

[0072] FIG1 shows the structure of a dual-light fusion night vision device 100 according to an embodiment of the present application. The device 100 includes a right display lens assembly 10 (i.e., a first monocular lens assembly), a left display lens assembly 20 (i.e., a second monocular lens assembly), and a bridge assembly 30. The right display lens assembly 10 and the left display lens assembly 20 are connected by the bridge assembly 30 to form a binocular, dual-channel dual-light night vision imaging device. The right display lens assembly 10, as a low-light-level infrared fusion display assembly, primarily performs low-light-level imaging and display, infrared imaging and display, and integrated information processing and display functions. It also cooperates with the bridge assembly 30 to implement left-eye rollover, pupil distance adjustment, and other software control functions. The left display lens assembly 20, as a low-light-level night vision display assembly, primarily performs low-light-level imaging and display adjustment, and also cooperates with the bridge assembly to implement left-eye rollover, pupil distance adjustment, and other software control functions. The bridge assembly 30, as the primary connection and control module, provides structural connection and support, and cooperates with internal hardware to implement electrical control and signal transmission for the left and right eyes.

[0073] As shown in Figures 2 and 3, the right display lens assembly 10 of the dual-light fusion night vision device 100 integrates low-light-level imaging, infrared imaging, and fusion imaging functions. The objective lens and eyepiece assembly can adjust optical imaging to adapt to different usage conditions. The right display lens assembly 10 for low-light-level and infrared dual-light fusion imaging integrates a right low-light-level objective lens assembly 12 for low-light-level night vision, an infrared lens assembly 13 for thermal imaging, and a right bridge interface 15 for gull-wing flipping. The right bridge interface 15 connects to the bridge assembly 30, thereby connecting the right display lens assembly 10 and the left display lens assembly 20 into one. As a result, the dual-light fusion night vision device 100 is a binocular, dual-channel, dual-light fusion night vision imaging device with functions such as panning, flipping, and gull-wing flipping.

[0074] Specifically, the right display lens group 10 includes a right lens barrel 11, a right low-light level objective lens group 12, an infrared lens group 13, a right eyepiece group 14, a right bridge interface 15, an image intensifier bracket 16, a display assembly 17, a right low-light level image intensifier 18 and a main control board 19. The right low-light level objective lens group 12, the infrared lens group 13, the right eyepiece group 14 and the right bridge interface 15 are installed on the right lens barrel 11, and the image intensifier bracket 16, the display assembly 17, the right low-light level image intensifier 18 and the main control board 19 are installed in the right lens barrel 11. Among them, the right lens barrel 11 defines a right low-light optical axis and an infrared optical axis. The infrared optical axis is arranged parallel to the right low-light optical axis and serves as an outer shell structure to support and fix the device; the right low-light objective lens group 12 mainly realizes low-light optical conduction and imaging; the infrared lens group 13 serves as infrared optical conduction and imaging; the right eyepiece group 14 serves as an optical imaging transmission component to play the function of imaging display and diopter adjustment; the right bridge interface part 15 serves as a connecting part with the bridge component 30, used to connect the right display lens group 10 and the bridge component 30; the image intensifier bracket 16 mainly serves to install the right low-light image intensifier 18, and connect and fix; the display component 17 is a device for infrared image display; the right low-light image intensifier 18 is a low-light imaging device for displaying low-light images.

[0075] The right lens barrel 11 includes a front cover plate 111 and a barrel body 112. The front cover plate 111 is installed at the front end opening of the barrel body 112 through a front end cover sealing ring 113. The right eyepiece group 14 is installed at the rear end of the barrel body 112 through an eyepiece end sealing foam pad 114. The right bridge interface part 15 is installed at the opening at the top of the barrel body 112 through a bridge interface sealing ring 115, thereby realizing the structural sealing inside the right lens barrel 11 and ensuring the sealing of the overall structure of the right display lens group 10.

[0076] The right low-light level objective lens group 12 and the infrared lens group 13 are mounted on the front cover 111 , the image intensifier bracket 16 is adjustably connected to the front cover 111 , the right eyepiece group 14 , the display assembly 17 , the right low-light level image intensifier 18 and the main control board 19 are all mounted on the image intensifier bracket 16 and encapsulated in the barrel 112 .

[0077] Referring to FIG4 , the front cover 111 is a flat plate that encloses the front opening of the cylindrical body 112. It is provided with a micro-light lens aperture 1111 and an infrared lens aperture 1112 for mounting the right micro-light lens assembly 12 and the infrared lens assembly 13, respectively. The right micro-light lens assembly 12 and the infrared lens assembly 13 are mounted side by side on the front cover 111, with the right micro-light lens assembly 12 and the infrared lens assembly 13 parallel to each other. Because the right micro-light lens assembly 12 and the infrared lens assembly 13 are coplanar with the front cover 111, assembly and adjustment of the optical system is simplified.

[0078] A threaded interface 1113 is formed at the rear end of the micro-mirror aperture 1111, surrounding the axis of the micro-mirror aperture 1111 (the right micro-mirror optical axis). This interface is used for mounting and adjusting the image intensifier bracket 16. Positioning notches 1114, opening toward the rear end, are also formed on the sidewalls of the threaded interface 1113. In the illustrated embodiment, two positioning notches 1114 are arranged diametrically around the threaded interface 1113. Extending from the rear end of the front cover 111 is a threaded interface 1113 for connection to the image intensifier bracket 16. This design utilizes a one-piece design that reduces adapters and provides greater stability. The thickness of the bottom of the threaded interface 1113 also enhances the overall structural strength of the front cover 111.

[0079] The infrared lens assembly 13 includes an infrared objective lens 131, an infrared objective lens adjustment flange 132, and an infrared imaging assembly 133. The infrared objective lens adjustment flange 132 is a connecting structure between the infrared objective lens 131 and the front cover 111, and serves to fix and adjust the structure. The infrared imaging assembly 133 performs infrared image acquisition and processing. The infrared objective lens 131 is fixed in the infrared objective lens adjustment flange 132. The infrared objective lens adjustment flange 132 is installed from the front end into the infrared lens hole 1112 on the front cover 111 via a sealing ring. The infrared imaging assembly 133 is installed at the rear end of the infrared lens hole 1112 along the infrared optical axis to sense the infrared light focused by the infrared objective lens 131. Existing infrared objective lenses and infrared detectors are generally installed on either side of a cover or housing, with the entire infrared lens assembly connected in series through the cover or housing. Infrared imaging is adjusted by adjusting the relative position between the infrared objective lens and the infrared detector. In the illustrated embodiment, the infrared objective lens 131 is not mounted directly on the front cover 111, but rather via an infrared objective lens adjustment flange 132. Adjusting the infrared imaging position by moving the infrared objective lens adjustment flange 132 (with the infrared objective lens 131) is safer than directly moving the infrared detector in the prior art, protecting the relatively fragile infrared detector. The infrared lens assembly 13 also includes infrared objective lens fixing screws 134. Multiple infrared objective lens fixing screws 134 are arranged around the infrared objective lens adjustment flange 132 to secure the infrared objective lens adjustment flange 132 and the infrared objective lens 131 therein to the fastening holes of the infrared lens hole 1112 on the front cover 111.

[0080] The right eyepiece assembly 14 includes a right eyepiece lens assembly 141 and a right eyepiece handwheel 142. The right eyepiece lens assembly 141 is mounted on the image intensifier bracket 16 along the right micro-light axis and protrudes from the rear end of the barrel 112. The right eyepiece handwheel 142 is mounted to the right eyepiece lens assembly 141 from the rear end. Existing eyepieces are typically mounted directly on the housing, but thin shell structures are susceptible to deformation under stress. In the illustrated embodiment, to improve the stability of the image-combining optical system, the right eyepiece lens assembly 141 is directly assembled with the image intensifier bracket 16 (and the image combiner 163 thereon). A sealing foam pad 114 is used between the eyepiece end and the barrel 112 to provide a seal and cushioning effect, reducing the impact of barrel 112 deformation on the optical structure. Furthermore, the right eyepiece lens assembly 141 abandons the conventional end-face mounting method and is mounted to the image intensifier bracket 16 via side-locking screws, thereby reducing the diameter of the lens assembly.

[0081] The right low-light-level objective lens assembly 12 and right low-light-level image intensifier 18 are the primary components of the dual-light fusion night vision device 100's low-light-level night vision system. The infrared lens assembly 13, comprising the infrared objective lens 131 and infrared imaging assembly 133, is the primary component of the thermal imaging system. The image intensifier bracket 16 (with the image combiner 163 thereon), the display assembly 17, and the right eyepiece lens assembly 141 are the primary components of the combined image display system. The three optical systems, namely the low-light-level night vision system, thermal imaging system, and combined image display system, are all integrated and mounted on the front cover 111, making the overall structure very compact.

[0082] The right bridge interface component 15 includes a right bridge interface body 151 and a right bridge adjustment screw 152. The right bridge interface body 151 is installed on the top of the right lens barrel 11 through the bridge interface sealing ring 115. The right bridge interface body 151 is used to connect one side of the bridge assembly 30 and is adjusted and locked through the right bridge adjustment screw 152.

[0083] The image intensifier bracket 16 is positioned at the rear end of the right low-light-level objective lens assembly 12 along the right low-light-level optical axis and is removably mounted to the front cover 111. The image intensifier bracket 16 comprises a mounting tube 161, an adjustment screw 162, an image combiner 163, and an elastic member 164. The mounting tube 161 is the main body for accommodating the right low-light-level image intensifier 18. The adjustment screw 162 has one end threaded onto the front end of the mounting tube 161 and the other end threadedly connects to a threaded connection 1113 at the rear end of the front cover 111. The elastic member 164 is positioned at the bottom of the mounting tube 161, positioned between the right low-light-level image intensifier 18 and the image combiner 163. This ensures stable mounting of the right low-light-level image intensifier 18 and facilitates adjustment of its position along the right low-light-level optical axis in conjunction with the adjustment screw 162. The rear end of the mounting tube 161 is an image combiner 163, and the front end is an opening for the right low-light-level image intensifier 18, which is provided with a tube opening thread 1611. The front end of the mounting tube 161 extends forward from a lug 1613. The image combiner 163 and the mounting tube 161 for the right low-light-level image intensifier 18 are combined into the image intensifier bracket 16. This integrated design also makes the support structure more stable.

[0084] The mounting tube 161 features a cylindrical frame structure, securely securing the right low-light-level image intensifier 18. This frame is constructed from an ultra-light magnesium alloy, and further weight reduction is achieved through the hollowing of the mounting tube 161. The right low-light-level image intensifier 18 is inserted through the opening at the front of the mounting tube 161. The lug 1613 at the front passes through the adjustment screw 162 and engages the positioning notch 1114 provided in the threaded interface 1113, thereby constraining the mounting tube 161's rotational freedom about the right low-light-level optical axis.

[0085] A first internal thread is provided on the inner wall of the end of the adjusting screw 162 facing the mounting tube 161, which is threadably connected to the tube mouth thread 1611 of the mounting tube 161. A second internal thread is provided on the inner wall of the other end of the adjusting screw 162 facing the front cover 111. The second internal thread is threadably connected to the threaded interface 1113 on the front cover 111, thereby connecting the mounting tube 1611 and the front cover 111 along the right shimmer optical axis. The internal threads of the first and second internal threads are in opposite directions. Correspondingly, the external threads of the tube mouth thread 1611 and the threaded interface 1113 are in opposite directions. As a result, the first internal thread and the tube mouth thread 1611 form threads in opposite directions to the second internal thread and the threaded interface 1113. By rotating the adjusting screw 162, the position of the mounting tube 161 and the image combiner 163 relative to the front cover 111 on the right shimmer optical axis changes. The front end of the right low-light-level image intensifier 18 abuts against the end surface of the threaded interface 113, while its rear end abuts against the bottom of the mounting tube 161 via one end of an elastic member 164. By rotating the adjustment screw 162, the mounting tube 161 and the front cover 111 move toward or away from each other, and the position of the image combiner 163, which is fixedly connected to the mounting tube 161, changes accordingly. This allows for adjusting the relative distance between the image combiner 163 and the right low-light-level image intensifier 18 and adapting to different models of right low-light-level image intensifier 18.

[0086] The image combiner 163 is arranged at the rear end of the low-light-level image intensifier 18 along the right low-light-level optical axis, and mainly plays the role of superimposing, displaying and fixing the low-light-level and infrared images.

[0087] The display assembly 17 is connected to the infrared imaging assembly 133 and is used to display the infrared image from the infrared lens assembly 13. It is mounted above the image combiner 163 using screws and washers that provide both a secure connection and fine-tuning. The low-light image from the right low-light objective lens assembly 12 is fused with the infrared image from the infrared lens assembly 13 at the image combiner 163. Through the right eyepiece assembly 14, a fused image 40 of the low-light image and infrared thermal image can be observed, as shown in Figure 8. When the low-light image 41 is superimposed on the infrared image 42 in the display area 1711 of the display screen 171, the low-light target and the infrared target appear to overlap. The infrared target display can be switched between various modes using software control to achieve the desired display effect.

[0088] The main control board 19 is installed on the mounting column set on the mounting tube 161 through fasteners. The main control board 19 integrates the power supply circuit of the display component 17 and the right low-light image intensifier 18. It is arranged on the mounting tube 161 to facilitate powering the rear display component 17 and the right low-light image intensifier 18 below.

[0089] It should be noted that when the dual-light fusion night vision device 100 is sold as a product, the right display lens group 10 may not have the right low-light image intensifier 18 inside. After purchasing the product, consumers can purchase and install the image intensifier according to their personal preferences and use it.

[0090] Please refer to FIG5, FIG6 and FIG7, the imaging principle and process of the right display lens assembly 10 are as follows:

[0091] The external image light enters the right low-light-level objective lens group 12, is transmitted and imaged, and then is photoelectrically converted by the right low-light-level image intensifier 18 and bombarded on the fluorescent screen for imaging and display. Finally, the image is displayed on the imaging surface with enhanced brightness. In this way, the low-light-level imaging optical path is formed.

[0092] After the external image is transmitted and imaged through the infrared objective lens 131, it is photoelectrically imaged through the infrared imaging component 133. The image is processed and analyzed by the internal circuit and processing program, and output as a digital video format file. It is transmitted to the display screen 171 through the connecting cable 172 for image display, thus forming an infrared imaging optical path.

[0093] The two spectral images, the low-light image displayed by the right low-light image intensifier 18 and the infrared image displayed on the display screen 171, are superimposed and fused at a 45-degree angle by the semi-transparent and semi-reflective prism in the image combiner 163. These images are then transmitted and displayed through the right eyepiece lens assembly 141. This step forms the low-light and infrared fusion optical path. The right display lens assembly 10 can be adjusted for dual-light fusion. The dual-light fusion adjustment method includes the following steps:

[0094] Step S01, observing through the right eyepiece assembly 14 whether there is any overlap deviation between the low-light image 41 and the infrared image 42;

[0095] In step S02, if there is an overlapping deviation between the low-light image 41 and the infrared image 42, loosen the infrared objective lens fixing screw 134, and move the infrared objective lens 131 in the infrared lens hole 1112 of the front cover 111 to translate the end face up and down or left and right. After translation, perform optical and mechanical calibration, and the infrared imaging component 133 outputs the calibrated image, which is output to the display component 17 for display.

[0096] In step S03 , the infrared objective lens 131 is fixed to the front cover 111 by tightening the infrared objective lens adjustment flange 132 via the infrared objective lens fixing screw 134 .

[0097] Step S04 , when the whole device inspects the low-light image 41 and the infrared image 42 , it is determined whether there is still a slight overlap deviation;

[0098] In step S05 , if there is still an overlap deviation between the edges of the low-light image 41 and the infrared image 42 , the display area 1711 of the display screen 171 is controlled to control the display position of the infrared image 42 , thereby achieving vertical and horizontal translation calibration of the display area 1711 .

[0099] The display effect of the fused image 40 after bi-optic fusion by the right display lens assembly 10 is shown in Figure 8. When the infrared objective lens adjustment flange 132 and the infrared imaging assembly 133 are centered, the optical imaging is correct, and the low-light image 41 and the infrared image 42 are displayed overlapping, resulting in a normal bi-optic fused image 40 as shown in Figure 8, which meets the requirements of search applications. If the low-light image 41 and the infrared image 42 overlap and deviate, as shown in Figure 9, the performance will be affected.

[0100] When the image display shows overlapping deviations as shown in Figure 9, the infrared objective lens 131 can be moved up and down or left and right to translate the end face. After translation, the optics are mechanically calibrated, and the infrared imaging component 133 outputs the calibrated image, which is output to the display component 17 for display. The dual-light fusion image after preliminary calibration is shown in Figure 10. When the infrared objective lens 131 is shifted up and down or left and right, the optical convergence also shifts accordingly. At this time, the imaging image of the infrared imaging component 133 also produces a certain offset, thus achieving the purpose of calibration. After calibration, the infrared objective lens 131 and the infrared objective lens adjustment flange 132 can be fixed to the corresponding structure (front cover 111) using the infrared objective lens fixing screws 134, completing the structural adjustment work.

[0101] The display screen 171 of the display assembly 17 for infrared imaging is designed with a certain margin, making the area of ​​the display screen 171 larger than the display area 1711. This allows the position of the display area 1711 of the display screen 171 to be controlled through a software program, thereby adjusting the display position of the infrared image 42 and ultimately eliminating the positional discrepancy between the infrared image 42 and the low-light image 41. After structural assembly and adjustment, when the low-light image 41 and the infrared image 42 are inspected through the entire machine, if there is still a slight deviation between the image edges, the infrared imaging assembly 133 and the display assembly 17 can be used through software and external hardware to implement vertical and horizontal calibration control and storage of the display area 1711 of the display screen 171, ultimately achieving image overlap between the infrared image 42 and the low-light image 41, achieving the desired alignment adjustment effect.

[0102] The left display lens assembly 20 of the dual-light fusion night vision device 100 is shown in Figures 10 and 11. The left display lens assembly 20 integrates low-light-level imaging capabilities and features internal electronic components for functional control. The right display lens assembly 10 for low-light-level imaging integrates a left low-light-level objective lens assembly 22, a left eyepiece assembly 23, and a left low-light-level image intensifier 24 for low-light-level night vision, as well as a left bridge interface 25 for gull-wing flipping. The left bridge interface 25 connects to the bridge assembly 30, integrating the left and right display lens assemblies 20 and 10. Thus, the dual-light fusion night vision device 100 is a binocular, dual-channel, dual-light fusion night vision imaging device with functions such as panning, tilting, and gull-wing flipping.

[0103] Specifically, the left display lens group 20 includes a left lens barrel 21, a left low-light level objective lens group 22, a left eyepiece group 23, a left low-light level image intensifier 24, a left bridge interface 25, a left eyepiece adjustment flange 26, a gasket 27 and a clamping ring 28. The left low-light level objective lens group 22, the left eyepiece group 23 and the left bridge interface 25 are installed on the left lens barrel 21, and the left low-light level image intensifier 24 is installed inside the left lens barrel 21. Among them, the left lens barrel 21 defines a left low-light optical axis, which is arranged parallel to the right low-light optical axis and serves as an outer shell structure to support and fix the device; the left low-light objective lens group 22 mainly realizes low-light optical transmission and imaging; the left eyepiece group 23 serves as an optical imaging transmission component to play the role of imaging display and diopter adjustment; the left low-light image intensifier 24 is a low-light imaging device for displaying low-light images; the left bridge interface part 25 serves as a connecting part with the bridge assembly 30, and is used to connect the right display lens group 10 and the bridge assembly 30; the left eyepiece adjustment flange 26 is used for installing and adjusting the left eyepiece group 23.

[0104] More specifically, the left lens barrel 21 is a cylindrical structure arranged along the left low-light-level optical axis. The left low-light-level objective lens assembly 22, the left low-light-level image intensifier 24, and the left eyepiece assembly 23 are sequentially arranged within the left lens barrel 21 along the left low-light-level optical axis to achieve low-light-level imaging. The left low-light-level objective lens assembly 22 is equipped with a distance adjustment ring that serves to determine the focal length. After adjustment, the ring is secured with a set screw. A threaded compression ring 28 is connected to the left lens barrel 21 via internal and external threads, simultaneously compressing the washer 27 and the low-light-level image intensifier 24. The left eyepiece adjustment flange 26 and the left eyepiece assembly 23 form the integrated eyepiece, enabling relevant optical adjustment functions to be achieved through the left eyepiece adjustment flange 26.

[0105] The left bridge interface component 25 includes a left bridge interface body 251 and a left bridge adjustment screw 252. The left bridge interface body 251 is installed on the top of the left lens barrel 21 through a bridge interface sealing ring. The left bridge interface body 251 is used to connect one side of the bridge assembly 30 and is adjusted and locked through the left bridge adjustment screw 252.

[0106] The bridge assembly 30 of the dual-light fusion night vision device 100 is shown in Figures 12 and 13. The bridge assembly 30 is used to connect and adjust the right display lens group 10 and the left display lens group 20. The bridge assembly 30 includes a bridge body 31, a right-rotating axis pressure plate 32, a left-rotating axis pressure plate 33, a right pressure plate pin 34, a left pressure plate pin 35, a right pressure plate set screw 36, and a left pressure plate set screw 37. The bridge body 31 primarily connects and supports the right display lens group 10 and the left display lens group 20, and cooperates with other parts (such as the right bridge adjustment screw 152 and the left bridge adjustment screw 252) to achieve rotational adjustment. The right-rotating axis pressure plate 32 and the left-rotating axis pressure plate 33 primarily serve to compress and fix the right display lens group 10 and the left display lens group 20 and provide structural reinforcement.

[0107] Specifically, the right and left rotation axis pressure plates 32 and 33 are mounted on either side of the rear end of the bridge body 31 via right pressure plate pins 34 and right pressure plate setscrews 36, and left pressure plate pins 35 and left pressure plate setscrews 37, respectively. The right side of the bridge body 31 is connected to the right display lens assembly 10 and is compressed by the right rotation axis pressure plate 32. The right rotation axis pressure plate 32 is rotatably mounted on the right rear side of the bridge body 31 via the right pressure plate pin 34. After being connected to the right display lens assembly 10, it is locked to the bridge body 31 via the right pressure plate setscrew 36. The left side of the bridge main body 31 is connected to the left display mirror group 20 and is pressed by the bridge left rotating shaft pressure plate 33. The bridge left rotating shaft pressure plate 33 is rotatably installed on the left rear side of the bridge main body 31 through the left pressure plate pin 35, and is locked to the bridge main body 31 through the left pressure plate fastening screw 37 after being connected to the left display mirror group 20.

[0108] A right bridge support shaft 311 and a left bridge support shaft 312 are respectively provided rearwardly on both sides of the bridge body 31. The axes of the right and left bridge support shafts 311 and 312 are parallel. A right pressure plate shaft 321 is coaxially provided on the right bridge shaft pressure plate 32 corresponding to the right bridge support shaft 311. The right bridge support shaft 311 and the right pressure plate shaft 321 respectively penetrate the right bridge connection hole 1511 on the right bridge interface body 151 from the front and back. A right bridge adjustment screw 152 is screwed into a right adjustment screw hole 1512, which is perpendicular to and extends through the right bridge connection hole 1511, to lock the right display lens assembly 10 at a specific angle about the right support shaft 311. The left bridge shaft pressure plate 33 is coaxially provided with a left pressure plate shaft 331 corresponding to the left bridge support shaft 312. The left bridge support shaft 312 and the left pressure plate shaft 331 are respectively inserted into the left bridge connecting hole 2511 on the left bridge interface body 251 from the front and back, and the left bridge adjusting screw 252 is screwed into the left adjusting screw hole 2512 which is perpendicular to and passes through the left bridge connecting hole 2511 to lock the left display lens group 20 at a certain angle around the left support shaft 321.

[0109] A shaft gasket 38 and a shaft seal 39, or a shaft gasket 38, can be mounted on the right bridge support shaft 311, the right pressure plate shaft 321, the left bridge support shaft 312, and the left pressure plate shaft 331, respectively. These shaft gaskets 38 and the shaft seal 39, or the shaft gasket 38, abut against both ends of the right bridge connection hole 1511 and the left bridge connection hole 2511. The shaft gasket 38 adjusts the clearance between the shaft holes and provides a damping effect when the right display lens assembly 10 and the left display lens assembly 20 rotate about the right bridge support shaft 311 and the left bridge support shaft 312, respectively. The shaft seal 39 on the right bridge support shaft 311 and the left bridge support shaft 312 meets the IP67 protection level. After installation, the right rotating shaft pressure plate 32 of the bridge, the left rotating shaft pressure plate 33 of the bridge, the right pressure plate pin 34, the left pressure plate pin 35, the right pressure plate fastening screw 36, and the left pressure plate fastening screw 37 realize the important role of pressing and fixing the right display mirror group 10, the left display mirror group 20, the bridge assembly 30, the rotating shaft gasket 38, and the rotating shaft sealing ring 39, and strengthening the structure, and finally complete the realization of the mechanical structure activity.

[0110] The top of the bridge body 31 is provided with a bridge adapter interface 313, which is used to realize the external connection function of the dual-light fusion night vision device 100. A bridge function knob 314 is provided on the front end, and bridge function buttons 315 are provided on the left and right sides of the top of the bridge body 31. The bridge function knob 314 and the bridge function buttons 315 mainly control and adjust the low-light imaging component and the infrared imaging component. The bridge body 31 has bridge function windows 316 on both sides of the front end, which are used for external sensing and internal information transmission.

[0111] In the dual-light fusion night vision device 100, the right display lens group 10 and the left display lens group 20 serve as the main observation parts, and are connected to the bridge assembly 30 through an axis-hole matching structure. The right bridge adjustment screw 152 and the left bridge adjustment screw 252 are in the right display lens group 10 and the left display lens group 20 through a threaded matching ejection structure to realize the rotation adjustment of the right display lens group 10 and the left display lens group 20 around the bridge assembly 30, thereby realizing the distance adjustment between the right display lens group 10 and the left display lens group 20, and finally realizing the adjustment of the user's observation pupil distance, thereby improving the product's ergonomics.

[0112] In summary, the dual-light fusion night vision device of the present application has the functions of low-light imaging night vision, low-light infrared fusion night vision, and integrated use of left and right binocular night vision, and has at least the following advantages:

[0113] (1) The right eye is used as the conventional dominant eye. The right display lens group in the dual-light fusion night vision device uses a solution of fusion of low-light and infrared dual optical paths. While meeting the requirements of small size, low mass, and high human-machine efficiency, it obtains the visual effect of low-light and infrared fusion imaging. It has the advantages of dual-spectrum fusion imaging, strong discrimination ability, and greatly improved user experience. It can meet the various usage needs of customers: low-light night vision usage needs, binocular stereo night vision usage needs, infrared fusion night vision, and information-based superimposed display night vision demand modes.

[0114] (2) The left display lens group in the dual-light fusion night vision device adopts a low-light-level night vision solution to meet conventional low-light-level night vision needs. At the same time, with the adjustable objective lens and eyepiece solution, it can meet the observation of far and near scenes and the ability to adjust according to the different vision of the user. While achieving excellent imaging quality and human-machine efficiency, the overall weight of the component is also well controlled.

[0115] (3) The right display mirror group and the left display mirror group are connected by a bridge assembly with a flip function, which has the advantages of left and right eye stereoscopic imaging. Under the premise of realizing binocular stereoscopic visual recognition function, flip function, and pupil distance adjustment function, the integrated circuit control and software control functions further improve the performance of the whole machine.

[0116] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0117] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A dual-light fusion night vision device, comprising a right display lens group (10), a left display lens group (20) and a bridge assembly (30), wherein the right display lens group (10) and the left display lens group (20) are detachably connected via the bridge assembly (30), characterized in that: The right display lens assembly (10) comprises: The right lens barrel (11) defines a right low-light optical axis and an infrared optical axis, wherein the infrared optical axis is arranged parallel to the low-light optical axis; A right low-light objective lens group (12) is arranged on the right lens barrel (11) along the right low-light optical axis and is used for low-light optical transmission and imaging to obtain a low-light image; An infrared lens assembly (13) is arranged on the right lens barrel (11) along the infrared optical axis and is used for infrared optical transmission and imaging to obtain an infrared image; The left display lens assembly (20) comprises: The left lens barrel (21) defines a left micro-light axis; A left low-light objective lens group (22) is arranged on the left lens barrel (21) along the left low-light optical axis and is used for low-light optical transmission and imaging to obtain a low-light image; The bridge assembly (30) connects the right display lens group (10) and the left display lens group (20) in a manner such that the right micro-light axis is parallel to the left micro-light axis.

2. The dual-light fusion night vision device according to claim 1, characterized in that: The bridge assembly (30) comprises a bridge body (31), and a right bridge support shaft (311) and a left bridge support shaft (312) with parallel axes extend from both sides of the bridge body (31); The right bridge interface component (15) comprises a right bridge interface body (151) and a right bridge adjustment screw (152), and the right bridge interface body (151) is mounted on the right lens barrel (11); The left bridge interface component (25) comprises a left bridge interface body (251) and a left bridge adjustment screw (252), and the left bridge interface body (251) is mounted on the left lens barrel (21); The right bridge interface body (151) is rotatably sleeved on the bridge right support shaft (311), and the right bridge adjustment screw (152) is screwed into the right bridge interface body (151) perpendicular to the bridge right support shaft (311) to lock the angle of the right display lens group (10) around the bridge right support shaft (311); The left bridge interface body (251) is rotatably sleeved on the bridge left support shaft (312), and the left bridge adjustment screw (252) is screwed into the left bridge interface body (251) perpendicular to the bridge left support shaft (312) to lock the angle of the left display lens group (20) around the bridge left support shaft (312).

3. The dual-light fusion night vision device according to claim 2, characterized in that: The bridge assembly (30) further includes a bridge right-rotating shaft pressure plate (32) and a bridge left-rotating shaft pressure plate (33), wherein the bridge right-rotating shaft pressure plate (32) and the bridge left-rotating shaft pressure plate (33) are mounted on the bridge body (31); The right bridge frame rotating shaft pressure plate (32) is coaxially provided with a right pressure plate rotating shaft (321) corresponding to the right bridge frame supporting rotating shaft (311); the right bridge frame supporting rotating shaft (311) and the right pressure plate rotating shaft (321) respectively penetrate into the right bridge frame connecting hole (1511) on the right bridge frame interface body (151) from both ends; the right bridge frame adjusting screw (152) is screwed into the right adjusting screw hole (1512) which is perpendicular to and passes through the right bridge frame connecting hole (1511); The bridge frame left rotating shaft pressure plate (33) is coaxially provided with a left pressure plate rotating shaft (331) corresponding to the bridge frame left supporting rotating shaft (312); the bridge frame left supporting rotating shaft (312) and the left pressure plate rotating shaft (331) respectively penetrate the left bridge frame connecting hole (2511) on the left bridge frame interface body (251) from both ends; the left bridge frame adjusting screw (252) is screwed into the left adjusting screw hole (2512) which is vertical and passes through the left bridge frame connecting hole (2511).

4. The dual-light fusion night vision device according to claim 3, characterized in that: The bridge assembly (30) also includes a right pressure plate pin (34), a left pressure plate pin (35), a right pressure plate fixing screw (36) and a left pressure plate fixing screw (37); the right-rotating shaft pressure plate (32) of the bridge is rotatably mounted on the right rear side of the bridge body (31) through the right pressure plate pin (34), and is locked to the bridge body (31) through the right pressure plate fixing screw (36); the left-rotating shaft pressure plate (33) of the bridge is rotatably mounted on the left rear side of the bridge body (31) through the left pressure plate pin (35), and is locked to the bridge body (31) through the left pressure plate fixing screw (37).

5. The dual-light fusion night vision device according to claim 3, characterized in that: The right supporting shaft (311) of the bridge and the right pressure plate shaft (321) are respectively provided with shaft washers (38) and abut against the two ends of the right bridge connection hole (1511); the left supporting shaft (312) of the bridge and the left pressure plate shaft (331) are respectively provided with shaft washers (38) and abut against the two ends of the left bridge connection hole (2511).

6. The dual-light fusion night vision device according to any one of claims 1 to 5, characterized in that: The top of the bridge main body (31) is provided with a bridge adapter interface (313) for external connection; the bridge main body (31) is provided with a bridge function knob (314), and the left and right sides of the top of the bridge main body (31) are respectively provided with bridge function buttons (315), and the bridge function knob (314) and the bridge function buttons (315) are used to control and adjust the right display mirror group (10) and the left display mirror group (11); and the two sides of the front end of the bridge main body (31) are respectively provided with bridge function windows (316) for external sensing and internal information transmission.

7. The dual-light fusion night vision device according to any one of claims 1 to 5, characterized in that: The left display lens group (20) further comprises a left eyepiece adjustment flange (26), and the left eyepiece group (23) is adjustably mounted on the left lens barrel (21) via the left eyepiece adjustment flange (26).

8. The dual-light fusion night vision device according to claim 7, characterized in that: The left display lens group (20) further comprises a left low-light-level image intensifier (24) and a clamping ring (28). The left low-light-level image intensifier (24) is arranged between the left low-light-level objective lens group (22) and the left eyepiece lens group (23) along the left low-light-level optical axis. The clamping ring (28) is threadedly connected to the left lens barrel (21) to clamp the left low-light-level image intensifier (24) in the left lens barrel (21).

9. The dual-light fusion night vision device according to any one of claims 1 to 5, characterized in that: The right lens barrel (11) comprises a front cover plate (111) and a barrel body (112); the front cover plate (111) is mounted at the front end opening of the barrel body (112); and the right low-light objective lens group (12) and the infrared lens group (13) are mounted on the front cover plate (111).

10. The dual-light fusion night vision device according to claim 9, characterized in that: The infrared lens group (13) comprises an infrared objective lens (131) arranged along the infrared optical axis, an infrared objective lens adjustment flange (132) and an infrared imaging assembly (133); the infrared objective lens (131) is fixed in the infrared objective lens adjustment flange (132); the infrared objective lens adjustment flange (132) is adjustably and movably mounted on the front cover (111); the infrared objective lens (131) can be driven to move by moving the infrared objective lens adjustment flange (132) on an end surface perpendicular to the infrared optical axis, thereby achieving adjustment of the infrared imaging position.

11. The dual-light fusion night vision device according to claim 10, characterized in that: The right display lens group (10) further comprises an image intensifier bracket (16), which is arranged at the rear end of the right low-light-level objective lens group (12) along the right low-light-level optical axis and is adjustably connected to the front cover plate (111), and a right low-light-level image intensifier (18) is detachably mounted in the image intensifier bracket (16) along the right low-light-level optical axis.

12. The dual-light fusion night vision device according to claim 11, characterized in that: The image intensifier bracket (16) comprises a mounting tube (161), an adjusting screw ring (162), an image combiner (163) and an elastic member (164); a right low-light-level image intensifier (18) is mounted in the mounting tube (161); two ends of the adjusting screw ring (162) along the right low-light-level optical axis are respectively connected to the front cover plate (111) and the mounting tube (161) through reverse threads, so that when the adjusting screw ring (162) is rotated, the mounting tube (161) and the front cover plate (111) move toward or away from each other along the right low-light-level optical axis.

13. The dual-light fusion night vision device according to claim 12, characterized in that: The right display lens group (10) further includes a display component (17) connected to the infrared lens group (13) by signal, the image combiner (163) is arranged between the right low-light-level image intensifier (18) and the eyepiece group (14) along the right low-light-level optical axis, and the display component (17) is arranged on one side of the image combiner (163) and connected to the infrared lens group (13) to display an infrared image.

14. The dual-light fusion night vision device according to claim 13, characterized in that: The display assembly (17) includes a display screen (171) and a connecting cable (172). The infrared lens assembly (13) transmits an infrared image to the display screen (171) for display via the connecting cable (172). The display screen (171) is larger than a display area (1711) for displaying the infrared image, so that the position of the display area (1711) can be adjusted on the display screen (171).

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