Low-light night vision device based on finite element analysis

Abstract

The utility model discloses a low-light level night vision device based on finite element analysis in the technical field of low-light level night vision devices, which comprises a night vision intensifier, one end of the night vision intensifier is connected with an observation eyepiece, and one end of the night vision intensifier far away from the observation eyepiece is provided with an observation objective lens. Elastic sealing pieces are arranged between the night vision intensifier and the interior of the observation eyepiece and between the night vision intensifier and the interior of the observation objective lens, and fixing rod pieces are connected to the four corners of the outer side of the night vision intensifier and the four corners of the outer side of the observation eyepiece and the four corners of the outer side of the observation objective lens respectively. A user can quickly replace observation eyepieces or observation objective lenses with different parameters according to actual observation requirements, the optimal imaging effect is achieved, the universality and adaptability of the device are greatly improved, the whole night vision device does not need to be disassembled complexly when the device is maintained, the maintenance difficulty and cost are reduced, and the maintenance efficiency is improved. And the maintenance convenience and the use efficiency of the equipment are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of low-light night vision instrument, especially to a low-light night vision instrument based on finite element analysis. BACKGROUND

[0002] Low-light night vision instrument is a kind of equipment that can observe scenes under weak light. It is mainly composed of objective lens, image intensifier, eyepiece and other parts. When working, the objective lens first focuses the weak light on the image intensifier, and the image intensifier converts and enhances the weak light signal into a visible light image, and finally through the eyepiece for the user to observe. Because of its efficient use of light, low-light night vision instrument is widely used in military reconnaissance, night security monitoring, outdoor exploration and wildlife observation, etc. It can help people clearly see the target object in a relatively dark environment.

[0003] The existing low-light night vision instrument mostly adopts fixed integrated structure design. This design makes the observation eyepiece and observation objective lens fixed in the low-light night vision instrument, and cannot be flexibly adjusted according to the actual observation scene. When facing diversified observation scenes, the user cannot quickly replace the observation eyepiece or observation objective lens with corresponding parameters. If the observation eyepiece or observation objective lens is damaged during use, due to its integrated structure with the whole device, the whole night vision instrument needs to be disassembled for maintenance, which increases the maintenance difficulty and cost, and the whole device cannot be used during maintenance. Therefore, there is certain limitation in the use process.

[0004] Based on this, we propose a low-light night vision instrument based on finite element analysis to solve the above-mentioned problems. CONTENT OF THE UTILITY MODEL

[0005] The purpose of this part is to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part and the abstract of the specification and the utility model name to avoid obscuring the purpose of this part, the abstract of the specification and the utility model name. Such simplifications or omissions cannot be used to limit the scope of the utility model.

[0006] Therefore, the utility model aims to provide a low-light night vision instrument based on finite element analysis, which can solve the problems of the existing low-light night vision instrument, such as the inability to flexibly adjust the eyepiece and objective lens for observation, the difficulty in quickly replacing the parameters, and the high cost and difficulty in maintenance after damage.

[0007] In order to solve the above technical problems, the utility model provides a faint light night vision device based on finite element analysis adopts the following technical scheme: including night vision intensifier, one end of night vision intensifier is connected with observation eyepiece, the end away from observation eyepiece of night vision intensifier is installed with observation objective lens, the inside between night vision intensifier and observation eyepiece, observation objective lens all is provided with elastic packing, the outside four corners of night vision intensifier and observation eyepiece, observation objective lens still are connected with fixed link piece respectively,

[0008] The middle part of the night vision intensifier is provided with a lens barrel embedded hole, and the bottom of the night vision intensifier is provided with a picture analysis assembly based on finite element analysis.

[0009] Optionally, the lens barrel embedded hole is provided with a connecting screw opening at both ends, and a first annular groove is further provided between the lens barrel embedded hole and the connecting screw opening.

[0010] Optionally, the picture analysis assembly includes an optical combiner, which is installed inside the night vision intensifier, and the night vision intensifier is provided with an infrared imaging lens at one end, a plurality of infrared emitters are equidistantly distributed on the outer side of the infrared imaging lens, and a knock protection cover is further provided on one end of the infrared imaging lens.

[0011] Optionally, the infrared imaging lens is provided with a positioning column on both sides of the outer side, and the knock protection cover is provided with a rotating clamping groove on both sides, the rotating clamping groove and the positioning column are matched in structure, and the rotating clamping groove and the positioning column are rotatably connected.

[0012] Optionally, the observation eyepiece and the observation objective lens are provided with a fixed baffle at one end, the fixed baffle is provided with a fixed through hole at the four corners of the night vision intensifier, the fixed through hole and the fixed link piece are matched in structure, the observation eyepiece and the observation objective lens are provided with an observation lens barrel at one end close to the fixed baffle, and the observation lens barrel and the lens barrel embedded hole are transitionally matched.

[0013] Optionally, the fixed baffle is provided with a connecting screw head on the outer side close to the observation lens barrel, the connecting screw head and the connecting screw opening are matched in structure, a second annular groove is further formed between the connecting screw head and the observation lens barrel, and the second annular groove, the first annular groove and the elastic packing are transitionally matched.

[0014] In summary, the utility model includes at least one of the following beneficial effects:

[0015] 1. The low-light night vision device designed in this solution adopts a modular structure, flexibly combining the observation eyepiece, observation objective lens, and night vision intensifier. Users can quickly replace the observation eyepiece or observation objective lens with different parameters according to actual observation needs to achieve the best imaging effect, greatly improving the versatility and adaptability of the equipment. The device does not require complex disassembly of the entire night vision device during maintenance, reducing maintenance difficulty and cost. As can be seen from the above, this design enables the low-light night vision device to quickly install and remove the night vision intensifier, observation eyepiece, and observation objective lens according to usage conditions. Users can quickly replace the observation eyepiece and observation objective lens with different parameters in different usage scenarios, greatly improving the convenience of equipment maintenance and usage efficiency.

[0016] 2. The low-light night vision device designed in this scheme utilizes a structural design with a transitional fit between the first annular groove and the elastic seal. This design allows the elastic seal to be positioned at the connection between the night vision intensifier and the observation eyepiece / objective lens, effectively improving the airtightness of the connection. This prevents external dust and other impurities from entering the device through the connection gaps, protecting internal components from contamination and ensuring long-term stable operation. Furthermore, the rotating slot and positioning post allow for a rotating snap-fit ​​connection, enabling the anti-collision protective cover to be attached to the outside of the infrared imaging lens. This provides excellent anti-collision protection for the core component, the infrared imaging lens, enhancing the safety and reliability of the night vision intensifier during outdoor use, reducing damage from accidental collisions, and extending the device's lifespan. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram showing the disassembled night vision intensifier of this utility model;

[0020] Figure 3 This is a schematic diagram of the image analysis component structure of this utility model;

[0021] Figure 4 For the present utility model Figure 3 Enlarged view of point A in the middle;

[0022] Figure 5 This is a schematic diagram of the second annular groove structure of this utility model.

[0023] Explanation of reference signs: 1, night vision enhancer; 2, observation eyepiece; 3, observation objective lens; 4, elastic sealing element; 5, fixed rod element; 6, lens barrel embedded hole; 7, picture analysis assembly; 8, connecting screw; 9, first annular groove; 10, optical combiner; 11, infrared imaging lens; 12, infrared emitter; 13, anti-collision protective cover; 14, positioning column; 15, rotating clamping groove; 16, fixed baffle; 17, fixed through hole; 18, observation lens barrel; 19, connecting screw head; 20, second annular groove. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] Embodiment: refer to Figures 1 to 5 The present application provides an embodiment, a low-light-level night vision device based on finite element analysis, comprising a night vision enhancer 1, one end of the night vision enhancer 1 is connected with an observation eyepiece 2, one end of the night vision enhancer 1 away from the observation eyepiece 2 is installed with an observation objective lens 3, the inside of the night vision enhancer 1, the observation eyepiece 2 and the observation objective lens 3 are all provided with an elastic sealing element 4, the outside four corners of the night vision enhancer 1, the observation eyepiece 2 and the observation objective lens 3 are also respectively connected with a fixed rod element 5, a lens barrel embedded hole 6 is provided in the middle of the night vision enhancer 1, a picture analysis assembly 7 based on finite element analysis is arranged at the bottom of the night vision enhancer 1, the picture analysis assembly 7 in the existing technology can analyze and optimize the night vision picture in real time by using the finite element analysis capability, through finite element analysis, the light distribution, imaging quality and other parameters in the night vision picture can be accurately simulated and predicted, and the performance of the night vision enhancer 1 can be adjusted and optimized according to the analysis result, so as to further improve the overall performance and imaging effect of the night vision device, connecting screws 8 are arranged at the openings of both ends of the lens barrel embedded hole 6, a first annular groove 9 is further arranged between the lens barrel embedded hole 6 and the connecting screws 8, the connecting screws 8 arranged at the openings of both ends of the lens barrel embedded hole 6 are used for dismounting and connecting the night vision enhancer 1, the observation eyepiece 2 and the observation objective lens 3.

[0026] The picture analysis component 7 comprises an optical combiner 10 which is installed inside the night vision intensifier 1, one end of the night vision intensifier 1 is provided with an infrared imaging lens 11, a plurality of groups of infrared emitters 12 are equidistantly distributed on the outer side of the night vision intensifier 1 close to the infrared imaging lens 11, and a knock-proof protective cover 13 is further sleeved on one end of the infrared imaging lens 11. The picture analysis component 7 is mainly composed of the optical combiner 10, the infrared imaging lens 11, the infrared emitter 12 and the knock-proof protective cover 13, wherein the optical combiner 10 is responsible for integrating the optical path and ensuring that the light accurately reaches the infrared imaging lens 11 during transmission, which can realize high-quality imaging. The infrared imaging lens 11 focuses on capturing weak infrared light signals, significantly improving the imaging capability in low-illumination environments. The infrared emitter 12 is used to provide active infrared illumination to assist in improving the brightness and clarity of the image. Based on finite element analysis, the optical path design of the optical combiner 10 is further optimized to achieve the best state of cooperation between components, thereby comprehensively improving the imaging quality and reliability of the entire system.

[0027] The infrared imaging lens 11 is provided with positioning columns 14 on both sides of the outer part, the anti-collision protective cover 13 is provided with rotating clamping grooves 15 on both sides, the rotating clamping grooves 15 are matched with the positioning columns 14, and the rotating clamping grooves 15 and the positioning columns 14 are in rotating clamping connection. Through the structure design of the rotating clamping connection between the rotating clamping grooves 15 and the positioning columns 14, the anti-collision protective cover 13 can be rotatingly clamped on the outer part of the infrared imaging lens 11, and the anti-collision protective cover 13 can play a role in preventing the infrared imaging lens 11 from being collided from the outside. One end of the observation eyepiece 2 and the observation objective lens 3 is provided with a fixed baffle 16, the fixed baffle 16 is provided with fixed through holes 17 at four corners of the night vision intensifier 1, the fixed through holes 17 are matched with the fixed rod 5, one end of the observation eyepiece 2 and the observation objective lens 3 close to the fixed baffle 16 is provided with an observation lens barrel 18, the observation lens barrel 18 is in transition fit with the lens barrel embedded hole 6, the fixed through holes 17 are respectively arranged at the fixed baffle 16 and the four corners of the night vision intensifier 1, the fixed through holes 17 are matched with the fixed rod 5, the night vision intensifier 1, the observation eyepiece 2 and the observation objective lens 3 which are in threaded connection can be secondarily fixed, the stability of the splicing between the night vision intensifier 1, the observation eyepiece 2 and the observation objective lens 3 can be effectively improved, the outer side of the fixed baffle 16 close to the observation lens barrel 18 is provided with a connecting screw head 19, the connecting screw head 19 is matched with the connecting screw hole 8, a second annular groove 20 is further formed between the connecting screw head 19 and the observation lens barrel 18, the second annular groove 20, the first annular groove 9 and the elastic sealing piece 4 are in transition fit, the elastic sealing piece 4 can be limitedly connected at the connecting part between the night vision intensifier 1 and the observation eyepiece 2 and the observation objective lens 3 through the transition fit between the second annular groove 20, the first annular groove 9 and the elastic sealing piece 4, the air tightness of the connection between the night vision intensifier 1 and the observation eyepiece 2 and the observation objective lens 3 can be improved by the elastic sealing piece 4, and the impurities such as dust from the outside can be effectively prevented from entering from the connecting gap.

[0028] Working principle: the low-light-level night vision device designed in the scheme is mainly composed of a night vision intensifier 1, an observation eyepiece 2 and an observation objective lens 3. The night vision intensifier 1 is embedded and connected in the inside of the night vision intensifier 1 through the lens barrel embedded hole 6 and the connecting screw hole 8 arranged at both ends of the night vision intensifier 1 and the observation lens barrel 18 arranged at one end of the observation eyepiece 2 and the observation objective lens 3, the connecting screw head 19 is matched with the connecting screw hole 8, and the observation lens barrel 18 is in transition fit with the lens barrel embedded hole 6, so that the observation lens barrel 18 arranged at one end of the observation eyepiece 2 and the observation objective lens 3 can be embedded and connected in the inside of the night vision intensifier 1, and the night vision intensifier 1 can be spliced between the observation eyepiece 2 and the observation objective lens 3.

[0029] The micro-light night vision device designed by the scheme, through the first annular groove 9 formed between the embedded hole 6 in the lens barrel and the connecting screw 8, and the second annular groove 20 formed between the connecting screw head 19 and the observation lens barrel 18, because the second annular groove 20, the first annular groove 9 and the elastic sealing element 4 are in transition fit, the elastic sealing element 4 can be limited and connected at the connecting part between the night vision intensifier 1 and the observation eyepiece 2 and the observation objective lens 3, and the elastic sealing element 4 can also be used to improve the air tightness of the connection between the night vision intensifier 1 and the observation eyepiece 2 and the observation objective lens 3, which can effectively prevent external dust and other impurities from entering from the connecting gap, through the positioning column 14 respectively installed on the two sides of the infrared imaging lens 11, and the rotary clamping groove 15 respectively formed on the two sides of the anti-knock protective cover 13, because the rotary clamping groove 15 and the positioning column 14 are matched in structure, and the rotary clamping groove 15 and the positioning column 14 are in rotary clamping, the anti-knock protective cover 13 can be rotatably clamped on the outside of the infrared imaging lens 11, which can protect the core element infrared imaging lens 11 of the device from being knocked, thereby improving the safety of the night vision intensifier 1 in outdoor use.

[0030] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A low-light night vision device based on finite element analysis, comprising a night vision intensifier (1), characterized in that: One end of the night vision intensifier (1) is connected to an eyepiece (2), and an objective lens (3) is installed at the end of the night vision intensifier (1) away from the eyepiece (2). An elastic seal (4) is provided between the night vision intensifier (1) and the interior of the eyepiece (2) and the objective lens (3). Fixing rods (5) are also connected to the four outer corners of the night vision intensifier (1) and the eyepiece (2) and the objective lens (3). The night vision intensifier (1) has a through hole (6) in the middle of the lens tube, and a screen analysis component (7) based on finite element analysis is provided at the bottom of the night vision intensifier (1).

2. The low-light night vision device based on finite element analysis according to claim 1, characterized in that: The inner hole (6) of the lens barrel is provided with connecting screw holes (8) at both ends, and a first annular groove (9) is provided between the inner hole (6) of the lens barrel and the connecting screw holes (8).

3. A low-light night vision device based on finite element analysis according to claim 2, characterized in that: The image analysis component (7) includes an optical combiner (10), which is installed inside the night vision intensifier (1). One end of the night vision intensifier (1) is provided with an infrared imaging lens (11). Several groups of infrared emitters (12) are equidistantly distributed on the outer side of the night vision intensifier (1) near the infrared imaging lens (11). One end of the infrared imaging lens (11) is also covered with a shockproof protective cover (13).

4. A low-light night vision device based on finite element analysis according to claim 3, characterized in that: The infrared imaging lens (11) has positioning posts (14) on both sides of its exterior, and the anti-collision protective cover (13) has rotating slots (15) on both sides. The rotating slots (15) and the positioning posts (14) are structurally matched, and the rotating slots (15) and the positioning posts (14) are rotated and connected.

5. A low-light night vision device based on finite element analysis according to claim 4, characterized in that: A fixed baffle (16) is installed at one end of both the observation eyepiece (2) and the observation objective (3). Fixed through holes (17) are opened at the four corners of the fixed baffle (1) and the night vision intensifier (1). The fixed through holes (17) are matched with the structure of the fixed rod (5). An observation tube (18) is installed at one end of both the observation eyepiece (2) and the observation objective (3) near the fixed baffle (16). The observation tube (18) and the embedded hole (6) in the tube are in a transition fit.

6. A low-light night vision device based on finite element analysis according to claim 5, characterized in that: The fixed baffle (16) is provided with a connecting screw head (19) near the outer side of the observation tube (18). The connecting screw head (19) is matched with the connecting screw hole (8). A second annular groove (20) is also formed between the connecting screw head (19) and the observation tube (18). The second annular groove (20), the first annular groove (9) and the elastic seal (4) are in transition fit.

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