Eyepiece adjustment device for night vision device

Abstract

The utility model discloses an eyepiece adjusting device for night vision instrument relates to night vision instrument technical field, including night vision instrument body, the both ends of night vision instrument body are equipped with objective lens and adjusting block respectively, the inside of adjusting block is provided with eyepiece, the side of adjusting block away from night vision instrument body is installed with eye -shade, the outside fixed mounting of adjusting block has scale ring, the side of objective lens away from night vision instrument body is installed with protection mechanism, the inside of adjusting block is provided with the moving mechanism for adjusting the position of ocular lens, for cooperation scale ring and accurate change the distance difference between eyepiece and user's eyes. The utility model discloses through rotating eyepiece adjusting ring can drive gear meshing drive, and then drive eyepiece along the guide rod direction and move, cooperate scale ring and through -hole realize accurate positioning effect, set up fixed assembly, avoid in the external object collision or other factors under the condition of leading to eyepiece adjusting ring movement, and then influence the positional relationship between eyepiece and eye -shade, increase structural stability.

Description

Technical Field

[0001] This utility model relates to the field of night vision technology, specifically to an eyepiece adjustment device for night vision devices. Background Technology

[0002] Night vision devices are devices that enhance vision in dark environments. They help users see their surroundings by amplifying weak light or infrared radiation. Night vision devices typically consist of an objective lens, an eyepiece, and an image intensifier. The eyepiece is the part through which the user directly observes the image. The eyepiece adjustment mechanism of existing night vision devices is relatively simple, often involving rotating an adjustment ring to move the outer frame of the eyepiece back and forth, thereby adjusting the position of the eyepiece. However, because the adjustment ring is tightly connected to the eyepiece tube by threads, multiple turns are required to achieve a clear image, resulting in low adjustment efficiency, inconvenience for beginners, and a poor user experience.

[0003] For example, the patent with authorization announcement number CN217425823U describes an eyepiece diopter adjustment device for night vision devices. However, the adjustment knob in this device is exposed to the external environment and is easily pressed, which causes the device to lose its self-locking property. The structure is not very stable and it is not easy to understand the adjustment drive precision, making it impossible to quickly and accurately adjust the position of the eyepiece.

[0004] Based on this, an eyepiece adjustment device for night vision devices is now provided, which can eliminate the drawbacks of existing technical solutions. Utility Model Content

[0005] The purpose of this invention is to provide an eyepiece adjustment device for night vision devices, so as to solve the problems of poor structural stability and inability to quickly and accurately adjust the eyepiece position in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A night vision device eyepiece adjustment device includes a night vision device body, an objective lens and an adjustment block are respectively provided at both ends of the night vision device body, an eyepiece is provided inside the adjustment block, an eyecup is installed on the side of the adjustment block away from the night vision device body, and a scale ring is fixedly installed on the outside of the adjustment block.

[0008] The objective lens is equipped with a protective mechanism on the side away from the night vision device body to prevent damage to the objective lens. The adjustment block is equipped with a moving mechanism for adjusting the position of the eyepiece, which is used to cooperate with the scale ring and accurately change the distance difference between the eyepiece and the user's eye.

[0009] Preferably, the protective mechanism includes a mounting plate disposed on the outside of the objective lens, an insertion interface being formed on the surface of the mounting plate, a protective plate being sleeved on the outside of the objective lens, a transparent protective sheet being fixedly installed inside the protective plate, a cover being hinged to the top of the protective plate, and an insertion block being fixedly disposed at the top of the protective plate near the insertion interface, one end of the insertion block being inserted into the insertion interface and connected with a bolt.

[0010] Preferably, the moving mechanism includes an eyepiece adjustment ring rotatably connected to the adjustment block. The adjustment block has a cavity inside. A gear ring is fixedly installed on the inner wall of the eyepiece adjustment ring. A gear is meshed on the inner side of the gear ring. One end of the gear shaft is rotatably connected to the inner wall of the cavity. The other end of the gear shaft is fixedly connected to a screw. The end of the screw is rotatably connected to the inner wall of the cavity. A slider is threaded on the outer side of the screw. The slider is fixedly installed on the outer side of the eyepiece. A guide assembly for pulling the slider is provided at the bottom of the eyepiece. A fixing assembly is provided on the side of the eyepiece adjustment ring near the night vision device body.

[0011] Preferably, the guide assembly includes a guide rod fixedly connected to the inner wall of the cavity, and the slider is slidably connected to the guide rod.

[0012] Preferably, the fixing component includes a rotating ring fixedly disposed on both sides of the eyepiece adjustment ring. The rotating ring has a plurality of through holes evenly distributed on its surface. A pin is installed inside the through hole located at the top. The pin is connected to the adjustment block by a spring.

[0013] Preferably, the scale markings on the scale ring surface are adapted to the position of the through hole.

[0014] Preferably, the surface of the eyepiece adjustment ring is provided with anti-slip texture.

[0015] Preferably, the bottom end of the cover and the bottom end of the protective plate are fixed together by magnetic attraction.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. This utility model is equipped with a moving mechanism. With the cooperation of the gear ring and the gear, the gear meshing transmission can be driven by rotating the eyepiece adjustment ring, thereby driving the slider and eyepiece to move along the guide rod. The scale ring and the through hole are used to achieve precise locking of the scale and the through hole. The fixed component is set to prevent the eyepiece adjustment ring from moving due to collision with external objects or other factors, thereby affecting the positional relationship between the eyepiece and the eyecup and increasing the structural stability.

[0018] 2. This utility model includes a protective mechanism to protect the objective lens, preventing dust from adhering to the surface of the objective lens or foreign objects from scratching the lens when the objective lens is not in use, thereby affecting the night vision effect. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of one side of the present invention.

[0020] Figure 2 For the present utility model Figure 1 A schematic diagram of the internal structure.

[0021] Figure 3 This is a schematic diagram of the structure of the present invention without the installed protective mechanism.

[0022] Figure 4 This is a schematic diagram of the protective mechanism of this utility model.

[0023] Figure 5 This is a schematic diagram of the moving mechanism of this utility model.

[0024] Figure 6 For the present utility model Figure 5 The left view.

[0025] Figure reference numerals: Night vision device body 101, objective lens 102, adjustment block 103, eyepiece 104, goggles 105, scale ring 106, protective mechanism 200, mounting plate 201, protective plate 202, transparent protective sheet 203, cover 204, insert block 205, moving mechanism 300, eyepiece adjustment ring 301, chamber 302, gear ring 303, gear 304, screw 305, slider 306, guide rod 307, rotating ring 308, through hole 309, pin 310. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Example

[0027] In this embodiment, as Figures 1-6 As shown, a night vision device eyepiece adjustment device includes a night vision device body 101. The night vision device body 101 has an electronic component for adjusting parameters, which is the prior art. Objective lenses 102 and adjustment blocks 103 are respectively provided at both ends of the night vision device body 101. An eyepiece 104 is provided inside the adjustment block 103. An eyecup 105 is installed on the side of the adjustment block 103 away from the night vision device body 101. A scale ring 106 is fixedly installed on the outside of the adjustment block 103. The number and angle of the scale lines on the surface of the scale ring 106 are adapted to the through hole 309. The through hole 309 and the pin 310 cooperate to realize the sliding limit of the eyepiece adjustment ring 301.

[0028] A protective mechanism 200 is installed on the side of the objective lens 102 away from the night vision device body 101 to prevent damage to the objective lens 102. The adjustment block 103 is equipped with a moving mechanism 300 for adjusting the position of the eyepiece 104. This mechanism works with the scale ring 106 to precisely change the distance difference between the eyepiece 104 and the user's eye. Before using the eyepiece adjustment device of the night vision device, check whether the night vision device can be used normally. Then, adjust and fix the eyepiece 104 through the moving mechanism 300 to facilitate the adjustment of the clarity and put the night vision device into the ready-to-use state.

[0029] Among them, such as Figure 2 and Figure 3 As shown, the protective mechanism 200 includes a mounting plate 201 disposed on the outside of the objective lens 102. A plug-in interface is provided on the surface of the mounting plate 201. The size and style of the plug-in interface are adapted to the size and style of the plug 205. The protective plate 202 is sleeved on the outside of the objective lens 102 to facilitate the disassembly of the protective plate 202. The protective plate 202 is made of a relatively rigid material and plays a protective role. A transparent protective sheet 203 is fixedly installed inside the protective plate 202 to prevent damage to the lens. A cover 204 is hinged to the top of the protective plate 202 to prevent dust from adhering to the surface of the objective lens 102 when it is not in use and affecting its use. A plug 205 is fixedly disposed at the top of the protective plate 202 and near the plug-in interface. One end of the plug 205 is inserted into the plug-in interface and connected with a bolt to facilitate the disassembly of the protective plate 202 and extend the life of the objective lens 102.

[0030] Among them, such as Figures 2-6 As shown, the moving mechanism 300 includes an eyepiece adjusting ring 301 rotatably connected to the adjusting block 103. A chamber 302 is formed inside the adjusting block 103. A gear ring 303 is fixedly mounted on the inner wall of the eyepiece adjusting ring 301. A gear 304 is meshed on the inner side of the gear ring 303. One end of the gear 304's rotating shaft is rotatably connected to the inner wall of the chamber 302, and the other end of the gear 304's rotating shaft is fixedly connected to a screw 305. The end of the screw 305 is rotatably connected to the inner wall of the chamber 302, and a sliding thread is provided on the outer side of the screw 305. Block 306 and slider 306 are fixedly installed on the outside of eyepiece 104. The screw drive structure of gear 304 and screw 305 is combined with guide rod 307 to ensure that eyepiece 104 can move smoothly without deviation, which is suitable for different user needs. The bottom of eyepiece 104 is provided with a guide component for pulling slider 306 to move. The eyepiece adjustment ring 301 is provided with a fixing component on the side near the night vision device body 101, which effectively prevents the position of eyepiece 104 from changing due to external collision, pressing or vibration, and improves the reliability of field use.

[0031] Among them, such as Figure 2 and Figure 5As shown, the guide assembly includes a guide rod 307 fixedly connected to the inner wall of the chamber 302, and a slider 306 slidably connected to the guide rod 307, which guides the eyepiece 104 and prevents the slider 306 from shifting during use, thus avoiding jamming.

[0032] Among them, such as Figures 2-5 As shown, the fixing assembly includes a rotating ring 308 fixedly disposed on both sides of the eyepiece adjustment ring 301. The rotating ring 308 has several through holes 309 evenly distributed on its surface. A pin 310 is installed inside the through hole 309 at the top. The pin 310 is connected to the adjustment block 103 by a spring to prevent the pin 310 from being lost. The spring also enables the pin 310 to automatically return to its original position.

[0033] Among them, such as Figure 2 and Figure 5 As shown, the scale on the surface of the scale ring 106 is matched with the position of the through hole 309, and the spacing of the through holes 309 matches the scale of the scale ring 106 to avoid adjustment errors. The position and number of through holes 309 are restricted to improve the overall usability of the structure. The number of scale ring 106 and through holes 309 can be adjusted according to actual needs.

[0034] Among them, such as Figure 1 and Figure 2 As shown, the surface of the eyepiece adjustment ring 301 is provided with anti-slip texture. The anti-slip texture on the surface of the eyepiece adjustment ring 301 can be distinguished by color, which makes it possible to perform zeroing operation of the scale line of the eyepiece adjustment ring 301, reducing the threshold of use for beginners. The function of the anti-slip texture is to increase the contact area between the user and the eyepiece adjustment ring 301, improve the friction effect, and prevent slippage. Example

[0035] The difference from Example 1 is that, as in Example 2, ... Figure 4 As shown, the bottom end of the cover 204 and the bottom end of the protective plate 202 are fixed by magnetic attraction. The cover 204 is closed by magnetic attraction to prevent dust from entering and to provide double protection when not in use. Other methods can also be selected according to actual needs to meet the fixing requirements of the cover 204 and the protective plate 202.

[0036] In use, the user rotates the eyepiece adjustment ring 301, causing the inner wall gear ring 303 to rotate. The gear ring 303 drives the gear 304 to mesh and transmit power, which in turn drives the screw 305 to rotate, causing the threaded slider 306 to move linearly along the guide rod 307, thereby pushing the eyepiece 104 to adjust its position back and forth. The scale ring 106 engages with the through hole 309, allowing the user to observe the scale. When the specified position is reached, the pin 310 is inserted into the through hole 309 of the rotating ring 308 under the action of the spring, locking the eyepiece adjustment ring 301 to prevent accidental displacement, increase structural stability, and achieve precise adjustment.

[0037] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A night vision device eyepiece adjustment device, comprising a night vision device body (101), wherein an objective lens (102) and an adjustment block (103) are respectively provided at both ends of the night vision device body (101), an eyepiece (104) is provided inside the adjustment block (103), an eyepiece (105) is installed on the side of the adjustment block (103) away from the night vision device body (101), and a scale ring (106) is fixedly installed on the outer side of the adjustment block (103). Its features are, A protective mechanism (200) is installed on the side of the objective lens (102) away from the night vision device body (101) to prevent the objective lens (102) from being damaged; The adjustment block (103) is internally provided with a moving mechanism (300) for adjusting the position of the eyepiece (104), which is used to cooperate with the scale ring (106) and precisely change the distance difference between the eyepiece (104) and the user's eyes; The protective mechanism (200) includes a mounting plate (201) disposed on the outside of the objective lens (102). An insertion interface is provided on the surface of the mounting plate (201). A protective plate (202) is sleeved on the outside of the objective lens (102). A transparent protective sheet (203) is fixedly installed inside the protective plate (202). A cover (204) is hinged to the top of the protective plate (202). An insertion block (205) is fixedly disposed at the top of the protective plate (202) and near the insertion interface. One end of the insertion block (205) is inserted into the insertion interface and connected with a bolt. The moving mechanism (300) includes an eyepiece adjustment ring (301) rotatably connected to an adjustment block (103). The adjustment block (103) has a cavity (302) inside. A gear ring (303) is fixedly mounted on the inner wall of the eyepiece adjustment ring (301). A gear (304) is meshed on the inner side of the gear ring (303). One end of the gear (304) shaft is rotatably connected to the inner wall of the cavity (302), and the other end of the gear (304) shaft... The end is fixedly connected to the screw (305), and the end of the screw (305) is rotatably connected to the inner wall of the chamber (302). The outer side of the screw (305) is threaded with a slider (306), and the slider (306) is fixedly installed on the outer side of the eyepiece (104). The bottom of the eyepiece (104) is provided with a guide assembly for pulling the slider (306) to move. The eyepiece adjustment ring (301) is provided with a fixing assembly on the side near the night vision device body (101).

2. The eyepiece adjustment device for a night vision device according to claim 1, characterized in that, The guide assembly includes a guide rod (307) fixedly connected to the inner wall of the chamber (302), and the slider (306) is slidably connected to the guide rod (307).

3. The eyepiece adjustment device for a night vision device according to claim 1, characterized in that, The fixing assembly includes a rotating ring (308) fixedly disposed on both sides of the eyepiece adjustment ring (301). The rotating ring (308) has a plurality of through holes (309) evenly distributed on its surface. A pin (310) is installed inside the through hole (309) located at the top. The pin (310) is connected to the adjustment block (103) by a spring.

4. The eyepiece adjustment device for a night vision device according to claim 3, characterized in that, The scale on the surface of the scale ring (106) is adapted to the position of the through hole (309).

5. The eyepiece adjustment device for a night vision device according to claim 1, characterized in that, The surface of the eyepiece adjustment ring (301) is provided with anti-slip texture.

6. The eyepiece adjustment device for a night vision device according to claim 1, characterized in that, The bottom end of the cover (204) is fixed to the bottom end of the protective plate (202) by magnetic attraction.

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