Dual light fusion night vision device and dual light fusion dressing method

Abstract

The application provides a dual-light fusion night vision device and a dual-light fusion adjusting method. The dual-light fusion night vision device comprises a first monocular lens group, which comprises: a first lens barrel; a first low-light objective lens group, which is installed on the first lens barrel and defines a first low-light optical axis; an infrared lens group, which is installed on the first lens barrel and defines an infrared optical axis; and a combined image system. The infrared lens group comprises an infrared objective lens and an infrared objective lens adjusting flange, which are arranged along the infrared optical axis. The infrared objective lens is fixed in the infrared objective lens adjusting flange, and the infrared objective lens adjusting flange is movably installed on the first lens barrel. The infrared objective lens can be moved by moving the infrared objective lens adjusting flange on the end surface perpendicular to the infrared optical axis, so as to realize the position adjustment of the infrared image. In the application, the first display lens group uses a low-light and infrared dual-light fusion scheme and can be adjusted through the infrared objective lens adjusting flange, so as to adjust the overlapping deviation of the low-light image and the infrared image.

Description

Technical Field

[0001] This application relates to the field of night vision technology, and in particular to a dual-light fusion night vision device and a dual-light fusion assembly method. Background Technology

[0002] Low-light night vision systems use an image intensifier as their core component. This intensifier amplifies the faint moonlight, starlight, and atmospheric glow reflected from the target scene, thus obtaining a bright image of the scene observable by the human eye. A low-light image intensifier is an optoelectronic device composed of an intensifier tube and a high-voltage power supply, encapsulated using a potting process. The imaging principle involves a photocathode converting an optical image into an electronic image. An electro-optical imaging system (electrode system) then transmits the electronic image to a fluorescent screen. During this transmission, the electron energy is amplified, and the geometric dimensions of the electronic image are scaled. The fluorescent screen then performs electro-optical conversion, transforming the electronic image into a visible light image. Its advantages lie in its continuous target surface, high resolution, clear imaging, and visual capabilities approaching those of the human eye. Based on development stages, it can be divided into first-generation, second-generation, third-generation, and second-and-a-half-generation systems.

[0003] Infrared thermal imagers convert the invisible infrared energy emitted by objects into visible thermal images. Different colors in the thermal image represent different temperatures of the object being measured. By viewing the thermal image, the overall temperature distribution of the target can be observed, the heating process can be studied, and further decisions can be made. Modern thermal imagers work by using photoelectric devices to detect and measure radiation, establishing a correlation between radiation and surface temperature. All objects above absolute zero (-273°C) emit infrared radiation. Thermal imagers use infrared detectors and optical imaging lenses to receive the infrared radiation energy distribution pattern of the target and reflect it onto the photosensitive element of the infrared detector, thus obtaining an infrared thermal image. The advantages of infrared thermal imagers include the ability to distinguish temperature differences, the ability to display multiple thermal imaging modes through algorithms, and the ability to overlay sensor information.

[0004] Most existing night vision products are single low-light night vision or single infrared night vision. Both have their advantages and disadvantages, and they have the disadvantages of relatively poor stereoscopic vision and relatively low product integration.

[0005] Due to varying levels of development of low-light night vision technology in different regions, the price of the same low-light image intensifier can differ significantly. Users in technologically advanced areas often need to purchase the night vision device housing and the low-light image intensifier separately. Therefore, head-mounted night vision devices designed for a fixed image intensifier model cannot meet this need. Furthermore, in actual use, low-light image intensifiers are easily damaged by strong light. A key requirement for night vision device users is the availability of locally sourced image intensifiers for maintenance. After replacing the image intensifier with a high-performance or faulty one, the low-light and infrared images need to be calibrated. Otherwise, issues such as poor comfort, image overlap misalignment, and ultimately, compromised performance and user misjudgment can occur.

[0006] Currently, none of the products on the market support the installation of low-light image intensifiers or the adjustment of low-light and infrared image merging after installation. Summary of the Invention

[0007] Based on this, in order to solve the above-mentioned technical problems, this application provides a dual-light fusion night vision device and a dual-light fusion assembly method, which can adjust and eliminate the overlap deviation between low-light images and infrared images.

[0008] On one hand, embodiments of this application provide a dual-light fusion night vision device, including a first monocular lens group, the first monocular lens group comprising:

[0009] First lens tube;

[0010] The first low-light objective lens group is mounted on the first lens tube and defines a first low-light optical axis, which is used for low-light optical transmission and imaging to obtain a first low-light image;

[0011] An infrared lens assembly is mounted on the first lens barrel and defines an infrared optical axis parallel to the first micro-light optical axis for infrared optical transmission and imaging to obtain an infrared image.

[0012] A fusion system is used to fuse and display the first low-light image and the infrared image;

[0013] The infrared lens assembly includes an infrared objective lens and an infrared objective lens adjustment flange arranged along the infrared optical axis. The infrared objective lens is fixed in the infrared objective lens adjustment flange, which is movably mounted on the first lens barrel. By moving the infrared objective lens adjustment flange on the end face perpendicular to the infrared optical axis, the infrared objective lens can be moved to achieve position adjustment of the infrared image.

[0014] In one embodiment, the infrared lens assembly further includes an infrared objective lens fixing screw, which is disposed around the infrared objective lens adjusting flange to adjustably mount the infrared objective lens adjusting flange onto the first lens barrel.

[0015] In one embodiment, the first lens barrel includes a front cover plate disposed at the front end, the front cover plate having a micro-light objective lens hole and an infrared objective lens hole, the first micro-light objective lens assembly being installed in the micro-light objective lens hole; the infrared objective lens assembly further includes an infrared imaging component, the diameter of the infrared objective lens hole is larger than the outer diameter of the rear end portion of the infrared objective lens adjusting flange, the infrared objective lens adjusting flange is installed from the front end into the infrared objective lens hole along the infrared optical axis via a flange sealing ring and can move on a plane perpendicular to the infrared optical axis, and the infrared imaging component is installed along the infrared optical axis to the rear end of the infrared objective lens hole.

[0016] In one embodiment, the first monocular lens group further includes a display component disposed on one side of the imaging system and connected to the infrared imaging component to display the infrared image.

[0017] In one embodiment, the image intensifier bracket includes a mounting cylinder, an adjusting screw ring, and an elastic element. The mounting cylinder is used to mount a first low-light image intensifier in the following manner: the front end of the first low-light image intensifier abuts against the front cover plate, and the rear end of the first low-light image intensifier abuts against the rear end of the mounting cylinder through the elastic element; the two ends of the adjusting screw ring along the low-light optical axis are respectively connected to the front cover plate and the mounting cylinder through reverse threads, so that when the adjusting screw ring is rotated, the mounting cylinder and the front cover plate move towards or away from each other along the low-light optical axis.

[0018] In one embodiment, the rear end of the front cover plate has a threaded interface, and the front end of the mounting cylinder has a cylinder opening thread, the cylinder opening thread having a helical direction opposite to that of the external thread of the threaded interface; the inner wall of the adjusting screw ring facing the end of the mounting cylinder has a first internal thread that is threadedly connected to the cylinder opening thread, and the inner wall of the adjusting screw ring facing the end of the front cover plate has a second internal thread that is threadedly connected to the threaded interface, the helical directions of the first internal thread and the second internal thread being opposite.

[0019] In one embodiment, the image merging system is fixedly connected to the rear end of the mounting cylinder to form an integral bracket with the mounting cylinder.

[0020] In one embodiment, a second monocular lens group is further included, wherein the first monocular lens group and the second monocular lens group are connected via a bridge assembly; the second monocular lens group includes:

[0021] The second lens tube defines a second low-light optical axis;

[0022] The second low-light objective lens group is disposed on the second lens tube along the second low-light optical axis and is used for low-light optical transmission and imaging to obtain low-light images;

[0023] The bridge assembly connects the first monocular lens group and the second monocular lens group in such a way that the first micro-light optical axis and the second micro-light optical axis are parallel.

[0024] In one embodiment, the second monocular lens group further includes a second eyepiece group and a second eyepiece adjustment flange, wherein the second eyepiece group is adjustablely mounted on the second lens barrel via the second eyepiece adjustment flange.

[0025] On the other hand, this application provides a dual-light fusion assembly method for the above-mentioned dual-light fusion night vision device, including the following steps:

[0026] Observe whether there is overlap or deviation between the low-light image and the infrared image;

[0027] If the low-light image and the infrared image overlap or deviate, the infrared objective lens adjustment flange is moved on the end face perpendicular to the infrared optical axis to move the infrared objective lens for optical-mechanical calibration. The calibrated infrared image is then output to the display screen for display.

[0028] Tighten the infrared objective lens adjustment flange to fix the infrared objective lens to the first lens barrel.

[0029] In one embodiment, the dual-light fusion assembly method of the dual-light fusion night vision device further includes the following steps:

[0030] During the overall inspection of the dual-light fusion night vision device, it is determined whether there is still an overlap or deviation between the low-light image and the infrared image;

[0031] If the low-light image and the infrared image still have an overlap deviation, the position of the display area on the display screen is controlled to adjust the display position of the infrared image, so as to achieve translation calibration of the display area on the display screen.

[0032] The dual-light fusion night vision device and dual-light fusion assembly and adjustment method of this application have at least the following beneficial effects: In the dual-light fusion night vision device and dual-light fusion assembly and adjustment method of this application, the first display lens group uses a scheme of low-light and infrared dual-light path fusion, which obtains the visual effect of low-light and infrared fusion imaging, and has the advantage of dual-spectrum fusion imaging. The dual-light fusion image can be adjusted by adjusting the infrared objective lens flange and the display area position of the display screen of the display component, so as to adjust and eliminate the overlap deviation of the low-light image and the infrared image, improve the display quality of the fused image, and can be applied to the adjustment after replacing the low-light image intensifier. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of a dual-light fusion night vision device according to an embodiment of this application;

[0034] Figure 2 for Figure 1 A three-dimensional structural diagram of the first display lens group of the dual-light fusion night vision device;

[0035] Figure 3 for Figure 2 An exploded view of the first display lens group in the diagram;

[0036] Figure 4 for Figure 3 An exploded view of the first display mirror assembly after removing the first bridge interface component;

[0037] Figure 5 for Figure 3 A schematic diagram of the exploded structure of the optical components in the diagram;

[0038] Figure 6 for Figure 5 A schematic diagram of the assembly structure;

[0039] Figure 7 for Figure 6 A schematic diagram of the cross-sectional optical path;

[0040] Figure 8 for Figure 1 A three-dimensional structural diagram of the second display lens group of the dual-light fusion night vision device;

[0041] Figure 9 for Figure 8 An exploded view of the second display mirror assembly after removing the second bridge interface component;

[0042] Figure 10 This is a schematic diagram of a normal two-light fusion image;

[0043] Figure 11 This is a schematic diagram of a two-light fusion image with overlap deviation.

[0044] The component labels in the diagram are as follows:

[0045] First display lens group 10;

[0046] First lens barrel 11, first low-light objective lens group 12, infrared lens group 13, first eyepiece group 14, first bridge interface 15, image intensifier bracket 16, display assembly 17, first low-light image intensifier 18, main control board 19;

[0047] 111 front cover plate, 112 cylinder body, 113 front cover sealing ring, 114 eyepiece end sealing foam pad, 115 cable tray interface sealing ring;

[0048] Microscope hole 1111, infrared mirror hole 1112, threaded interface 1113, positioning notch 1114;

[0049] Infrared objective lens 131, infrared objective lens adjustment flange 132, infrared imaging assembly 133, infrared objective lens fixing screw 134;

[0050] First eyepiece lens group 141, first eyepiece handwheel 142;

[0051] First cable tray interface body 151, first cable tray adjusting screw 152;

[0052] Mounting cylinder 161, adjusting screw ring 162, image convergence device 163, elastic element 164;

[0053] The cylinder opening thread is 1611, and the lug is 1613.

[0054] Display screen 171, connecting cable 172; display area 1711;

[0055] Low-light image 41, infrared image 42;

[0056] Second display lens group 20;

[0057] Second lens barrel 21, second low-light objective lens group 22, second eyepiece group 23, second low-light image intensifier 24, second bridge interface 25, second eyepiece adjustment flange 26, gasket 27, clamping ring 28;

[0058] Cable tray assembly 30;

[0059] Dual-light fusion night vision device 100. Detailed Implementation

[0060] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application.

[0061] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intervening element. When an element is considered to be "coupled" to another element, it can be directly coupled to the other element or there may be an intervening element. The term "joint" as used herein refers to a connection in which two elements have power transmission. The terms "vertical," "horizontal," "left," "right," "above," "below," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations. It should be understood that these spatially related terms are intended to cover different orientations of the device in use or operation, in addition to those depicted in the drawings. For example, if the device is flipped in the drawings, an element or feature described as "below" or "under" other elements or features will be oriented "above" other elements or features. Therefore, the example term "below" can include both above and below orientations.

[0062] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The terms “and / or” and “and / or” as used herein include any and all combinations of one or more of the associated listed items.

[0063] Please see Figure 1 An embodiment of this application of a dual-light fusion night vision device 100 includes a first display lens group 10 (i.e., a first monocular lens group or a right display lens group), a second display lens group 20 (i.e., a second monocular lens group or a left display lens group), and a bridge assembly 30. The first display lens group 10 and the second display lens group 20 are connected via the bridge assembly 30 to form a binocular, dual-channel, dual-light night vision imager. The first display lens group 10, as a low-light infrared fusion display component, mainly performs low-light imaging and display, infrared imaging and display, integrated information processing and display functions, and works with the bridge assembly 30 to realize the second eye tilting function, interpupillary distance adjustment function, and other software control functions. The second display lens group 20, as a low-light night vision display component, mainly performs low-light imaging and display adjustment, and works with the bridge assembly 30 to realize the second eye tilting function, interpupillary distance adjustment function, and other software control functions. The bridge assembly 30, as the main connection control module, performs structural connection and support functions, and works with internal hardware to complete the electrical control and signal transmission functions for the first and second eyes.

[0064] Please refer to the following: Figure 2 and Figure 3The first display lens group 10 of the dual-light fusion night vision device 100 integrates low-light imaging, infrared imaging, and fusion imaging functions. The objective lens and eyepiece assembly can be adjusted for optical imaging to adapt to different usage conditions. The first display lens group 10 for low-light and infrared dual-light fusion imaging integrates a first low-light objective lens group 12 for low-light night vision, an infrared lens group 13 for thermal imaging, and a first bridge interface 15 for gull-wing flip-up functionality. The first bridge interface 15 is connected to the bridge assembly 30, thereby connecting the first display lens group 10 and the second display lens group 20 into one unit. Thus, the dual-light fusion night vision device 100 is a binocular, dual-channel, dual-light fusion night vision imager with functions such as horizontal rotation and gull-wing flip-up.

[0065] Specifically, the first display lens group 10 includes a first lens barrel 11, a first low-light objective lens group 12, an infrared lens group 13, a first eyepiece group 14, a first bridge interface 15, an image intensifier bracket 16, a display component 17, a first low-light image intensifier 18, and a main control board 19. The first low-light objective lens group 12, the infrared lens group 13, the first eyepiece group 14, and the first bridge interface 15 are mounted on the first lens barrel 11, and the image intensifier bracket 16, the display component 17, the first low-light image intensifier 18, and the main control board 19 are mounted inside the first lens barrel 11. The first lens barrel 11 defines a first low-light optical axis and an infrared optical axis, with the infrared optical axis parallel to the first low-light optical axis. As the outer shell structure, it serves to support and fix the device. The first low-light objective lens group 12 mainly realizes low-light optical transmission and imaging. The infrared lens group 13 serves as infrared optical transmission and imaging. The first eyepiece group 14 serves as an optical imaging transmission component, providing imaging display and diopter adjustment functions. The first bridge interface 15 serves as a connector to the bridge assembly 30, connecting the first display lens group 10 to the bridge assembly 30. The image intensifier bracket 16 mainly serves to install the first low-light image intensifier 18 and to connect and fix it. The display component 17 is an infrared image display device. The first low-light image intensifier 18 is a low-light imaging device for displaying low-light images.

[0066] The first lens barrel 11 includes a front cover plate 111 and a barrel body 112. The front cover plate 111 is installed at the front opening of the barrel body 112 through a front end cover sealing ring 113. The first eyepiece assembly 14 is installed at the rear end of the barrel body 112 through an eyepiece end sealing foam pad 114. The first bridge interface component 15 is installed at the top opening of the barrel body 112 through a bridge interface sealing ring 115, thereby achieving structural sealing inside the first lens barrel 11 and ensuring the overall structural sealing of the first display lens assembly 10.

[0067] The first low-light objective lens group 12 and the infrared lens group 13 are mounted on the front cover plate 111. The image intensifier bracket 16 is adjustablely connected to the front cover plate 111. The first eyepiece group 14, the display component 17, the first low-light image intensifier 18 and the main control board 19 are all mounted on the image intensifier bracket 16 and encapsulated in the cylinder 112.

[0068] Please refer to the following: Figure 4 The front cover plate 111 is a flat plate with an opening at the front end of the closed cylindrical body 112. It has a micro-light objective lens hole 1111 and an infrared objective lens hole 1112, used to mount the first micro-light objective lens group 12 and the infrared objective lens group 13, respectively. The first micro-light objective lens group 12 and the infrared objective lens group 13 are mounted side-by-side on the front cover plate 111 with the first micro-light optical axis and the infrared optical axis parallel. Because the first micro-light objective lens group 12 and the infrared objective lens group 13 are on the same plane of the front cover plate 111, the assembly and adjustment of the optical system is very simple.

[0069] A threaded interface 1113 is formed at the rear end of the micro-mirror aperture 1111 around the axis (first micro-light optical axis) of the micro-mirror aperture 1111 for mounting and adjusting the image intensifier bracket 16. A positioning notch 1114 with an opening facing the rear end is also provided on the side wall of the threaded interface 1113. In the illustrated embodiment, the two positioning notches 1114 are arranged in the diametrical direction of the threaded interface 1113. A threaded interface 1113 extends from the rear end of the front cover plate 111 to connect with the image intensifier bracket 16. This design employs an integrated form that reduces the number of 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 plate 111.

[0070] The infrared mirror assembly 13 includes an infrared objective lens 131, an infrared objective lens adjustment flange 132, and an infrared imaging component 133. The infrared objective lens adjustment flange 132 serves as a transition structure between the infrared objective lens 131 and the front cover plate 111, providing fixation and adjustment. The infrared imaging component 133 performs infrared image acquisition and processing. The infrared objective lens 131 is fixed in the infrared objective lens adjustment flange 132, which is installed from the front end into the infrared lens hole 1112 on the front cover plate 111 via a flange sealing ring. The infrared imaging component 133 is installed along the infrared optical axis to the rear end of the infrared lens hole 1112 to sense the infrared light focused by the infrared objective lens 131. In existing systems, the infrared objective lens and infrared detector are typically mounted on opposite sides of a cover plate or housing, connecting the entire infrared mirror assembly in series via the cover plate or housing. Infrared imaging is adjusted by regulating the relative positions of the infrared objective lens and the infrared detector. In the illustrated embodiment, the infrared objective lens 131 is not directly mounted on the front cover plate 111, but is mounted on the front cover plate 111 via the infrared objective lens adjustment flange 132. The diameter of the infrared lens hole 1112 is larger than the outer diameter of the portion of the infrared objective lens adjustment flange 132 that extends into the infrared lens hole 1112 (i.e., the rear end portion of the infrared objective lens adjustment flange 132). The infrared objective lens adjustment flange 132 (with the infrared objective lens 131) can be moved on the end face perpendicular to the infrared optical axis within the infrared lens hole 1112 via the outer edge of the infrared objective lens adjustment flange 132 to adjust the infrared imaging position. This is safer than directly moving the infrared detector in the prior art and can protect the relatively fragile infrared detector in the infrared imaging assembly 133. 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 fasten the infrared objective lens adjustment flange 132 and the internal infrared objective lens 131 to the fastening holes of the infrared lens hole 1112 on the front cover plate 111.

[0071] The first eyepiece group 14 includes a first eyepiece lens group 141 and a first eyepiece handwheel 142. The first eyepiece lens group 141 is mounted on the image intensifier bracket 16 along the first micro-optical axis and protrudes from the rear end of the barrel 112. The first eyepiece handwheel 142 is mounted on the first eyepiece lens group 141 from the rear end. Existing eyepieces are generally directly mounted on the housing, but thin-shell structures are easily deformed under stress. In the illustrated embodiment, to improve the stability of the image merging optical system, the first eyepiece lens group 141 is directly assembled with the image intensifier bracket 16 (with the image merging device 163). An eyepiece end sealing foam pad 114 is used for sealing and buffering between the first eyepiece lens group 141 and the barrel 112, reducing the impact of barrel 112 deformation on the optical mechanism. Furthermore, the first eyepiece lens group 141 abandons the conventional end-face mounting method and is mounted to the image intensifier bracket 16 using side-locking screws, which reduces the diameter of the lens group.

[0072] The first low-light objective lens group 12 and the first low-light image intensifier 18 are the main components of the low-light night vision system of the dual-light fusion night vision device 100; the infrared lens group 13, namely the infrared objective lens 131 and the infrared imaging component 133, are the main components of the thermal imaging system; the image intensifier bracket 16 (with the image combiner 163), the display component 17, and the first eyepiece lens group 141 are the main components of the image combination display system. The three optical systems—the low-light night vision system, the thermal imaging system, and the image combination display system—are all integrated and mounted on the front cover plate 111, making the overall structure very compact.

[0073] The first cable tray interface component 15 includes a first cable tray interface body 151 and a first cable tray adjusting screw 152. The first cable tray interface body 151 is installed on the top of the first lens barrel 11 through a cable tray interface sealing ring 115. The first cable tray interface body 151 is used to connect one side of the cable tray assembly 30 and is adjusted and locked by the first cable tray adjusting screw 152.

[0074] The image intensifier support 16 is positioned at the rear end of the first low-light objective lens group 12 along the first low-light optical axis and is detachably mounted to the front cover plate 111. The image intensifier support 16 includes a mounting cylinder 161, an adjusting screw ring 162, an image clamping device 163, and an elastic element 164. The mounting cylinder 161 is the main body for housing the first low-light image intensifier 18. One end of the adjusting screw ring 162 is screwed onto the front end of the mounting cylinder 161, and the other end is screwed into the threaded interface 1113 at the rear end of the front cover plate 111. The elastic element 164 is located at the bottom of the mounting cylinder 161, positioned between the first low-light image intensifier 18 and the image clamping device 163, to ensure the stable installation of the first low-light image intensifier 18 and to cooperate with the adjusting screw ring 162 in adjusting the position along the first low-light optical axis. The rear end of the mounting cylinder 161 is an image convergent 163, and the front end is an opening for inserting the first low-light image intensifier 18 and is provided with a cylinder opening thread 1611. The front end of the mounting cylinder 161 has a lug 1613 protruding forward. The image convergent 163 and the mounting cylinder 161 for mounting the first low-light image intensifier 18 are combined into an image intensifier bracket 16. This integrated design also makes the support structure more stable.

[0075] The mounting cylinder 161 adopts a cylindrical frame structure to firmly protect the first low-light image intensifier 18 in the middle. The frame structure is made of ultra-light magnesium alloy material, and the weight is further reduced by openings in the mounting cylinder 161. The first low-light image intensifier 18 is inserted into the opening at the front end of the mounting cylinder 161, and the lug 1613 at the front end passes through the adjusting screw ring 162 and is engaged in the positioning notch 1114 on the threaded interface 1113, thereby restricting the rotational freedom of the mounting cylinder 161 around the first low-light optical axis.

[0076] The adjusting ring 162 has a first internal thread on its inner wall facing the mounting cylinder 161, which is threaded to the cylinder opening thread 1611 of the mounting cylinder 161. The adjusting ring 162 has a second internal thread on its inner wall facing the front cover plate 111, which is threaded to the threaded interface 1113 on the front cover plate 111, thereby connecting the mounting cylinder 161 and the front cover plate 111 along the first micro-light optical axis. The internal threads of the first and second internal threads have opposite helical directions. Correspondingly, the external threads of the cylinder opening thread 1611 and the threaded interface 1113 have opposite helical directions. Thus, the first internal thread and the cylinder opening thread 1611 form opposite threads with the second internal thread and the threaded interface 1113. By rotating the adjusting ring 162, the positions of the mounting cylinder 161 and the image convergent device 163 relative to the front cover plate 111 on the first micro-light optical axis change. The front end of the first low-light image intensifier 18 abuts against the end face of the threaded interface 1113, and the rear end abuts against the bottom of the mounting cylinder 161 through one end of the elastic element 164. By rotating the adjusting screw ring 162, the mounting cylinder 161 and the front cover plate 111 move towards or away from each other, and the position of the image convergence device 163, which is fixedly connected to the mounting cylinder 161, also changes accordingly. This allows adjustment of the relative distance between the image convergence device 163 and the first low-light image intensifier 18, and also allows for adaptation to different models of the first low-light image intensifier 18.

[0077] The image combiner 163 is positioned along the first low-light optical axis at the rear end of the first low-light image intensifier 18, primarily serving to superimpose and fix low-light and infrared images. The image combiner 163 can achieve the superposition display of low-light and infrared images through a semi-transparent and semi-reflective mirror.

[0078] Display component 17 is connected to infrared imaging component 133 and is used to display the infrared image of infrared lens group 13. It is mounted above image merging unit 163 via screws and washers that serve to fix the connection and provide fine-tuning. The low-light image of the first low-light objective lens group 12 and the infrared image of infrared lens group 13 are fused at image merging unit 163, and can be observed through first eyepiece group 14. Figure 10 The image shown is a fusion of low-light imaging and infrared thermal imaging. When the low-light image is superimposed on the display area of ​​the infrared display screen, the low-light target and the infrared target will be displayed in the same way. The display effect of the infrared target can be switched in various modes by software control to achieve the display effect under different needs.

[0079] The main control board 19 is mounted on the mounting post on the mounting cylinder 161 by fasteners. The main control board 19 integrates the power supply circuits of the display component 17 and the first low-light image intensifier 18. The mounting cylinder 161 is located to facilitate power supply to the display component 17 behind and the first low-light image intensifier 18 below.

[0080] It should be noted that when the dual-light fusion night vision device 100 is sold as a product, the first display lens group 10 may not include the first low-light image intensifier 18. Consumers can purchase and install the image intensifier according to their personal preferences after purchasing the product.

[0081] Please refer to the following: Figure 5 , Figure 6 and Figure 7 The imaging principle and process of the first display lens group 10 are as follows:

[0082] External image light enters the first low-light objective lens group 12, is transmitted and imaged, and then undergoes photoelectric conversion and phosphor screen bombardment imaging and display by the first low-light image intensifier 18. Finally, the image is displayed on the imaging surface after brightness enhancement. In this way, the low-light imaging optical path is formed.

[0083] After the external image is transmitted and imaged by the infrared objective lens 131, it is photoelectrically imaged by the infrared imaging component 133. The image is processed and analyzed by the internal circuit and processing program, and a digital video format file is output. The image is then transmitted to the display screen 171 for display via the connecting cable 172. In this way, the infrared imaging optical path is formed.

[0084] The two spectral images, the low-light imaging image displayed by the first low-light image intensifier 18 and the infrared imaging image displayed by 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, and then transmitted and displayed through the first eyepiece lens group 141. This step constitutes the low-light and infrared fusion optical path.

[0085] Second display lens group 20 Figure 8 and Figure 9 As shown, the second display lens group 20 integrates low-light imaging functionality, and also integrates internal electronic components for function control. The first display lens group 10 for low-light imaging integrates a second low-light objective lens group 22, a second eyepiece group 23, and a second low-light image intensifier 24 for low-light night vision, as well as a second bridge interface component 25 for gull-wing flip-up functionality. The second bridge interface component 25 is connected to the bridge assembly 30, thereby connecting the second display lens group 20 and the first display lens group 10 into one unit. Thus, the dual-light fusion night vision device 100 is a binocular, dual-channel, dual-light fusion night vision imager, and has functions such as horizontal rotation and gull-wing flip-up.

[0086] Specifically, the second display lens group 20 includes a second lens barrel 21, a second low-light objective lens group 22, a second eyepiece group 23, a second low-light image intensifier 24, a second bridge interface 25, a second eyepiece adjustment flange 26, a gasket 27, and a clamping ring 28. The second low-light objective lens group 22, the second eyepiece group 23, and the second bridge interface 25 are mounted on the second lens barrel 21, and the second low-light image intensifier 24 is mounted inside the second lens barrel 21. The second lens barrel 21 defines a second low-light optical axis, which is parallel to the first low-light optical axis and serves as the outer shell structure, providing support and fixing for the device. The second low-light objective lens group 22 mainly realizes low-light optical transmission and imaging. The second eyepiece group 23 serves as an optical imaging transmission component, providing imaging display and diopter adjustment. The second low-light image intensifier 24 is a low-light imaging device for displaying low-light images. The second bridge interface 25 serves as a connector to the bridge assembly 30, connecting the first display lens group 10 to the bridge assembly 30. The second eyepiece adjustment flange 26 is used for the installation and adjustment of the second eyepiece group 23.

[0087] More specifically, the second lens barrel 21 has a cylindrical structure arranged along the second low-light optical axis. The second low-light objective lens group 22, the second low-light image intensifier 24, and the second eyepiece group 23 are sequentially arranged within the second lens barrel 21 along the second low-light optical axis to achieve low-light imaging. The second low-light objective lens group 22 is equipped with a viewing distance adjustment ring, which can be used to fix the distance between near and far focus. After adjustment, the adjustment ring is tightened with a set screw. The clamping ring 28 is a threaded clamping ring, which is connected to the second lens barrel 21 through internal and external threads, and simultaneously clamps the washer 27 and the second low-light image intensifier 24. The second eyepiece adjustment flange 26 and the second eyepiece group 23 form an integral eyepiece, and related optical adjustment functions can be achieved through the second eyepiece adjustment flange 26.

[0088] In the aforementioned dual-light fusion night vision device 100, since the right eye is the conventional dominant eye, the first display lens group 10 (right display lens group) in the dual-light fusion night vision device uses a scheme of low-light and infrared dual-light path fusion. While meeting the requirements of small size, low weight, and high human-machine efficiency, it obtains the visual effect of low-light and infrared fusion imaging, has the advantages of dual-spectrum fusion imaging, strong discrimination ability, and greatly improves the user experience, which can meet the various usage needs of customers.

[0089] Please see Figure 10 and Figure 11 The dual-light fusion assembly method for a dual-light fusion night vision device provided in this application includes the following steps:

[0090] Step S01: Observe whether there is overlap or deviation between the low-light image 41 and the infrared image 42 through the first eyepiece group 14;

[0091] In step S02, if there is an overlap deviation between the low-light image 41 and the infrared image 42, the infrared objective lens fixing screw 134 is loosened, and the infrared objective lens 131 is moved up and down or left and right in the infrared lens hole 1112 of the front cover plate 111. After the translation, optical and mechanical calibration is performed, and the infrared imaging component 133 outputs the calibrated image to the display component 17 for display.

[0092] Step S03: Secure the infrared objective lens 131 to the front cover plate 111 by tightening the infrared objective lens adjusting flange 132 with the infrared objective lens fixing screw 134.

[0093] Step S04: During the overall inspection, determine whether there is still a slight overlap deviation between the low-light image 41 and the infrared image 42;

[0094] Step S05: If there is still an overlap deviation between the edges of the low-light image 41 and the infrared image 42, control the position of the display area 1711 on the display screen 171 to control the display position of the infrared image 42, thereby achieving vertical and horizontal translation calibration of the display area 1711.

[0095] The dual-light fusion display effect of the first display lens group 10 is as follows: Figure 10 As shown, when the infrared objective lens adjustment flange 132 and the infrared imaging assembly 133 are centered, there is no optical imaging deviation. The low-light image 41 and the infrared image 42 are superimposed and displayed to obtain an image like... Figure 10 The normal dual-light fusion image shown can meet the requirements of search applications. However, when the low-light image 41 and the infrared image 42 overlap, as... Figure 11 As shown, this will affect the effectiveness of the product.

[0096] When the image display shows, Figure 11 When there is an overlap deviation, the end face can be shifted up and down or left and right by moving the infrared objective lens 131. After shifting, the optics are mechanically calibrated, and the infrared imaging component 133 outputs the calibrated image, which is then displayed on the display component 17. The dual-light fusion image after preliminary calibration is shown below. Figure 10 As shown, when the infrared objective lens 131 is shifted vertically and horizontally, the optical convergence also shifts accordingly. At this time, the image image of the imaging infrared imaging component 133 also shifts to a certain extent, thereby achieving the purpose of calibration. After calibration is completed, the infrared objective lens 131 and the infrared objective lens adjustment flange 132 can be fixed to the corresponding structure (front cover plate 111) by the infrared objective lens fixing screw 134, thus completing the structural assembly and adjustment work.

[0097] The display component 17 for infrared imaging display has a certain margin in its screen 171 design, making the area of ​​the screen 171 larger than the display area 1711. This allows the position of the display area 1711 of the screen 171 to be controlled by software settings, thereby adjusting the display position of the infrared image 42 and ultimately eliminating positional discrepancies between the infrared image 42 and the low-light image 41. After structural assembly and adjustment, during the overall inspection of the low-light image 41 and the infrared image 42, if slight deviations still exist at the image edges, the infrared imaging component 133 and the display component 17 can use software and external hardware to control and save the vertical and horizontal translation calibration of the display area 1711 of the screen 171, ultimately achieving image overlap between the infrared image 42 and the low-light image 41, thus achieving the desired overlap adjustment effect.

[0098] In summary, the dual-light fusion night vision device of this application has the functions of low-light imaging night vision, low-light infrared fusion night vision, and adjustable dual-light fusion image, and has at least the following advantages:

[0099] (1) The right eye is the conventional dominant eye. The first display lens group in the dual-light fusion night vision device uses a scheme of low light and infrared dual-light path fusion to obtain the visual effect of low light and infrared fusion imaging. It has the advantage of dual-spectrum fusion imaging. The dual-light fusion image can be adjusted by adjusting the infrared objective lens flange and the display area of ​​the display component to improve the display quality of the fusion image. It is applicable to the adjustment after replacing the low light image intensifier.

[0100] (2) The second display lens group in the dual-light fusion night vision device adopts a low-light night vision scheme to meet the conventional low-light night vision requirements. At the same time, with the adjustable objective lens and eyepiece scheme, it can meet the observation of near and far scenes and the ability to adjust according to the user's different vision. Under the premise of achieving excellent imaging quality and human-machine efficiency, the overall weight of the components is also well controlled.

[0101] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0102] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A dual light fusion night vision device, characterized in that, The first monocular group comprises: A first lens barrel (11); A first micro-lens group (12) mounted on the first lens barrel (11) and defining a first micro-lens optical axis, for micro-lens optical transmission and imaging to obtain a first micro-lens image; An infrared lens group (13) mounted on the first lens barrel (11) and defining an infrared optical axis parallel to the first micro-lens optical axis, for infrared optical transmission and imaging to obtain an infrared image; A combining system for displaying the first micro-lens image and the infrared image in fusion; A display assembly (17) for displaying the infrared image; The infrared lens group (13) comprises an infrared objective lens (131) and an infrared objective lens adjusting flange (132) arranged along the infrared optical axis, the infrared objective lens (131) is fixed in the infrared objective lens adjusting flange (132), the infrared objective lens adjusting flange (132) is movably mounted on the first lens barrel (11), the infrared objective lens (131) is moved by moving the infrared objective lens adjusting flange (132) on the end surface perpendicular to the infrared optical axis, so as to realize the position adjustment of the infrared image; The area of the display screen (171) of the display assembly (17) is larger than the display area (1711) for displaying the infrared image, so as to adjust the display position of the infrared image on the display screen (171) by controlling the position of the display area (1711).

2. The dual-optical fusion night vision device of claim 1, wherein, The infrared lens group (13) further comprises an infrared objective lens fixing screw (134) arranged around the infrared objective lens adjusting flange (132) to adjustably mount the infrared objective lens adjusting flange (132) on the first lens barrel (11).

3. The dual-optical fusion night vision device of claim 2, wherein, The first lens barrel (11) comprises a front cover plate (111) arranged at the front end, the front cover plate (111) is provided with a micro-lens hole (1111) and an infrared lens hole (1112), and the first micro-lens group (12) is mounted in the micro-lens hole (1111); The infrared lens group (13) further comprises an infrared imaging assembly (133), the aperture of the infrared lens hole (1112) is larger than the outer diameter of the rear end part of the infrared objective lens adjusting flange (132), the infrared objective lens adjusting flange (132) is mounted into the infrared lens hole (1112) along the infrared optical axis from the front end and can move on the surface perpendicular to the infrared optical axis through the flange sealing ring, and the infrared imaging assembly (133) is mounted to the rear end of the infrared lens hole (1112) along the infrared optical axis.

4. The dual-optical fusion night vision device of claim 3, wherein, The display assembly (17) is arranged on one side of the combining system and connected with the infrared imaging assembly (133) to display the infrared image.

5. The dual-optical fusion night vision device of claim 3, wherein, The first lens barrel (11) is internally provided with an image intensifier support (16), which comprises a mounting cylinder (161), an adjusting screw ring (162) and an elastic member (164). The mounting cylinder (161) is internally provided with a first micro-light image intensifier (18) mounted by abutting the front end of the first micro-light image intensifier (18) against the front cover plate (111) and abutting the rear end of the first micro-light image intensifier (18) against the rear end of the mounting cylinder (161) through the elastic member (164). The adjusting screw ring (162) is reversely screwed with the front cover plate (111) and the mounting cylinder (161) at both ends along the micro-light optical axis direction, so that the mounting cylinder (161) and the front cover plate (111) move towards or away from each other along the micro-light optical axis direction when the adjusting screw ring (162) is rotated.

6. The dual-optical fusion night vision device of claim 5, wherein, The rear end of the front cover plate (111) is formed with a threaded interface (1113), and the front end of the mounting cylinder (161) is provided with a cylinder mouth thread (1611) opposite in screwing direction to the external thread of the threaded interface (1113). The inner wall of one end of the adjusting screw ring (162) towards the mounting cylinder (161) is provided with a first internal thread threadedly connected with the cylinder mouth thread (1611), and the inner wall of one end of the adjusting screw ring (162) towards the front cover plate (111) is provided with a second internal thread threadedly connected with the threaded interface (1113), the screwing directions of the first internal thread and the second internal thread being opposite.

7. The dual-optical fusion night vision device of claim 5, wherein, The combined image system is fixedly connected to the rear end of the mounting cylinder (161) to form an integrated support with the mounting cylinder (161).

8. The dual-optical fusion night vision device of claim 1, wherein, Further comprising a second monocular group, the first monocular group and the second monocular group being connected through a bridge assembly (30); the second monocular group comprising: a second lens barrel (21) defining a second micro-light optical axis; a second micro-light objective group (22) arranged on the second lens barrel (21) along the second micro-light optical axis for micro-light optical transmission and imaging to obtain a micro-light image; wherein the bridge assembly (30) connects the first monocular group and the second monocular group in parallel with the first micro-light optical axis and the second micro-light optical axis.

9. The dual-optical fusion night vision device of claim 8, wherein, The second monocular group further comprises a second eyepiece group (23) and a second eyepiece adjusting flange (26), the second eyepiece group (23) being adjustably mounted on the second lens barrel (21) through the second eyepiece adjusting flange (26).

10. A dual-light fusion night vision device according to any one of claims 1 to 9, comprising the following steps: observing whether the micro-light image (41) and the infrared image (42) appear to be overlapped or deviated; If the micro-light image (41) and the infrared image (42) have an overlapping deviation, the infrared objective adjusting flange (132) is moved on the end surface perpendicular to the infrared optical axis to drive the infrared objective (131) to move for optical mechanical calibration, and the calibrated infrared image (42) is output to the display screen (171) for display; After calibration, the infrared objective adjusting flange (132) is locked to fix the infrared objective (131) to the first lens barrel (11).

11. The dual fusion night vision method of claim 10, wherein, Further comprising the following steps: During the whole machine inspection of the dual-light fusion night vision device, it is judged whether the micro-light image (41) and the infrared image (42) still have an overlapping deviation; If the micro-light image (41) and the infrared image (42) still have an overlapping deviation, the position of the display area (1711) on the display screen (171) is controlled to adjust the display position of the infrared image (42), so as to realize the translation calibration of the display area (1711) on the display screen (171).

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