Binocular low-light night vision device convenient for independent focusing

Abstract

The invention provides a binocular low-light level night vision device convenient for independent focusing. The binocular low-light level night vision device comprises two lens cones and a connecting seat, the two ends of the connecting seat are connected with lens cones through damping rotating shafts; image intensifiers for amplifying optical signals are mounted in the middle parts in the lens cones; an objective lens focusing hand wheel is rotatably mounted at the front end of the lens barrel, an eyepiece focusing hand wheel is rotatably mounted at the rear end of the lens barrel, an objective lens group and an eyepiece group are respectively mounted in the objective lens focusing hand wheel and the eyepiece focusing hand wheel, and a connecting structure of the objective lens group and the objective lens focusing hand wheel is the same as a connecting structure of the eyepiece group and the eyepiece focusing hand wheel; the objective lens set comprises an objective lens frame and a lens installed in the objective lens frame, and the rear section of the objective lens frame is in sliding connection with a sliding block fixedly arranged on the inner wall of the lens cone through an arranged sliding groove. The focal lengths of the objective lens and the ocular lens of the two lens cones can be respectively adjusted, so that the imaging focuses of the two lens cones can be positioned on a focal plane, and the object image is clear.

Description

Technical Field

[0001] The present invention relates to the technical field of night vision devices, and in particular to a binocular low-light-level night vision device with convenient and independent focusing. Background Art

[0002] Low-light-level night vision devices utilize low-brightness natural light—such as skylight, starlight, moonlight, and atmospheric glow—reflected by nighttime targets, amplifying it by hundreds of thousands of times, thereby achieving a level suitable for nighttime reconnaissance, observation, aiming, vehicle driving, and other battlefield operations with the naked eye. Low-light-level night vision devices are based on the physics of the photoelectric effect. Photons enter the device and strike a metal plate, generating photoelectrons. These electrons then pass through a thin disk placed in front of a light screen. The disk contains millions of microchannels (i.e., millions of pixels). Once these electrons enter the microchannels, they are multiplied and projected onto a fluorescent screen to form an image. Because low-light-level night vision devices utilize nighttime light and operate passively, they can effectively conceal themselves, making them ideal for specialized work.

[0003] When focusing, current binocular low-light-level night vision devices usually use a central focusing mechanism to focus the two lens barrels 1 at the same time. However, when different people use binocular low-light-level night vision devices, the distance between the two eyes of each person is different, and the distance between the two lens barrels 1 needs to be adjusted. When the distance between the two lens barrels 1 changes, the focal planes of the two lens barrels 1 will change. At this time, when the central focusing mechanism is used to focus the two lens barrels 1 at the same time, it is difficult to adjust the two lens barrels 1 to a clear state at the same time. Therefore, it is necessary to set an adjustment mechanism that can focus the two lens barrels 1 independently. In addition, some people have different degrees of myopia in their two eyes, and it is difficult to adjust the two eyes to a clear state at the same time using central focusing. Summary of the Invention

[0004] In order to overcome the problems existing in the background technology, the present invention provides a binocular low-light level night vision device with convenient independent focusing, so as to solve the technical problem that when the distance between the two lens barrels 1 of the binocular low-light level night vision device proposed in the background technology changes, the focal plane will change, and when the central focusing is used to focus the two lens barrels 1 at the same time, it is difficult to adjust the two lens barrels 1 to a clear state at the same time.

[0005] To achieve the above objectives, the invention is implemented through the following technical solutions: A binocular low-light-level night vision device with convenient independent focusing comprises two lens barrels 1 and a connecting seat 2; the two ends of the connecting seat 2 are connected to the lens barrel 1 by a damping shaft 3, and an image intensifier 4 for amplifying light signals is installed in the middle of the lens barrel 1; an objective lens focusing handwheel 5 is rotatably installed at the front end of the lens barrel 1, and an eyepiece focusing handwheel 6 is rotatably installed at the rear end, an objective lens group 7 and an eyepiece group 8 are respectively installed in the objective lens focusing handwheel 5 and the eyepiece focusing handwheel 6, and the connection structure between the objective lens group 7 and the objective lens focusing handwheel 5 is the same as the connection structure between the eyepiece group 8 and the eyepiece focusing handwheel 6; the objective lens group 7 comprises an objective lens frame 9 and a lens 10 installed in the objective lens frame 9, the rear section of the objective lens frame 9 is slidably connected to a slider 12 fixedly arranged on the inner wall of the lens barrel 1 through a provided slide groove 11, and the front section of the objective lens frame 9 is provided with an external thread threadedly connected to an annular boss 13 provided on the inner wall of the objective lens focusing handwheel 5.

[0006] Preferably, a micro motor 14 and a micro gear reducer 15 are installed on the outer wall of the lens barrel 1, the micro motor 14 is transmission connected to the micro gear reducer 15, the output shaft of the micro gear reducer 15 is connected to a transmission gear 16, the transmission gear 16 is transmission connected to a passive gear 17 provided on the outer wall of the objective lens focusing hand wheel 5, and the micro motor 14 is electrically connected to a battery pack 18 installed on the connecting seat 2 through a wire.

[0007] Preferably, a rubber eye mask 19 is further installed at the rear end of the lens barrel 1 .

[0008] Preferably, the eye mask 19 includes a cover body 20 and a fixing part 21. The fixing part 21 is an annular slot structure that is clamped at the rear end of the lens barrel 1 through the elasticity of rubber. The connection between the cover body 20 and the fixing part 21 is a compressible corrugated structure.

[0009] Preferably, a fixing ring 22 is relatively rotatably mounted on the end of the eyepiece focusing hand wheel 6 , the fixing ring 22 is fixedly connected to the lens barrel 1 via a connecting rod 23 , and the eye mask 19 is mounted on the fixing ring 22 via a slot structure.

[0010] Preferably, an infrared emitting device 24 is installed on the connecting base 2 through the damping shaft 3.

[0011] Preferably, the connecting base 2 is further provided with a driving motor 25 which is transmission-connected to the damping shaft 3 of the infrared emitting device 24 , and the driving motor 25 is electrically connected to the battery pack 18 .

[0012] The beneficial effects of the present invention are as follows: the binocular low-light-level night vision device of the present invention is provided with an objective lens focusing hand wheel and an eyepiece focusing hand wheel on both lens barrels, and the focal lengths of the objective lenses and eyepieces of the two lens barrels can be adjusted respectively, so that the focal points of the imaging of the two lens barrels can be located on the focal plane, thereby making the object image clear; when the observer's two eyes have different degrees of myopia, the eyepiece focusing hand wheels of the two lens barrels can be adjusted to adjust the focal lengths of the eyepieces respectively, so that the focal lengths of the two lens barrels correspond to the observer's vision, thereby allowing the observer to observe clearer images through the binocular low-light-level night vision device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention.

[0014] Figure 2 2 is a schematic diagram of the cross-sectional structure of the lens barrel.

[0015] Figure 3 It is a schematic diagram of the adjustment structure of the objective lens focusing hand wheel.

[0016] Figure 4 It is a structural schematic diagram of the objective lens frame.

[0017] Figure 5 2 is a schematic diagram of the installation structure of the micro motor.

[0018] Figure 6 It is a schematic diagram of the installation structure of the infrared emitting device.

[0019] Figure 7 It is a structural schematic diagram of the eye mask. DETAILED DESCRIPTION

[0020] In order to make the objectives, technical solutions and beneficial effects of the present invention more clear, preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings to facilitate understanding by technicians.

[0021] like Figure 1-7As shown, the present invention provides a binocular low-light level night vision device with convenient independent focusing, comprising two lens barrels 1 and a connecting seat 2; the two ends of the connecting seat 2 are connected to the lens barrel 1 through a damping shaft 3, and an image intensifier 4 for amplifying light signals is installed in the middle part of the lens barrel 1; an objective lens focusing handwheel 5 is rotatably installed at the front end of the lens barrel 1, and an eyepiece focusing handwheel 6 is rotatably installed at the rear end, an objective lens group 7 and an eyepiece group 8 are respectively installed in the objective lens focusing handwheel 5 and the eyepiece focusing handwheel 6, and the connection structure between the objective lens group 7 and the objective lens focusing handwheel 5 is the same as the connection structure between the eyepiece group 8 and the eyepiece focusing handwheel 6; the objective lens group 7 includes an objective lens frame 9 and a lens 10 installed in the objective lens frame 9, the rear section of the objective lens frame 9 is slidably connected to a slider 12 fixedly arranged on the inner wall of the lens barrel 1 through a provided slide groove 11, and the front section of the objective lens frame 9 is provided with an external thread threadedly connected to an annular boss 13 provided on the inner wall of the objective lens focusing handwheel 5. When using the night vision device, the damping shaft 3 between the connecting seat 2 and the lens barrel 1 is rotated according to the distance between the user's two eyes, thereby rotating the lens barrel 1 and adjusting the distance between the two lens barrels 1 to match the user's eyes; the objective lens focusing handwheels 5 of the two lens barrels 1 are rotated respectively to make the object image clear. During rotation, the objective lens focusing handwheel 5 rotates relative to the objective lens frame 9 through the annular boss 13 through the thread. The sliding groove 11 provided at the rear section of the objective lens frame 9 and the slider 12 provided on the inner wall of the lens barrel 1 cooperate to limit the objective lens frame 9 circumferentially to prevent the objective lens frame 9 from rotating, so that the objective lens frame 9 group moves back and forth, thereby adjusting the focal length of the objective lens group 7, and adjusting the focal length of the eyepiece through the eyepiece focusing handwheel 6 to correspond to the different vision of the two eyes. The binocular low-light-level night vision device of the present invention is provided with an objective lens focusing hand wheel 5 and an eyepiece focusing hand wheel 6 on both lens barrels 1, and the focal lengths of the objective lenses and eyepieces of the two lens barrels 1 can be adjusted respectively, so that the focal points of the images of the two lens barrels 1 can be located on the focal plane, thereby making the object image clear; when the observer's two eyes have different degrees of myopia, the eyepiece focusing hand wheels 6 of the two lens barrels 1 can be adjusted to adjust the focal lengths of the eyepieces respectively, so that the focal lengths of the two lens barrels 1 correspond to the observer's vision, thereby allowing the observer to observe clearer images through the binocular low-light-level night vision device.

[0022] like Figure 5 As shown, the outer wall of the lens barrel 1 is equipped with a micro motor 14 and a micro gear reducer 15, the micro motor 14 is connected to the micro gear reducer 15 in a transmission connection, the output shaft of the micro gear reducer 15 is connected to a transmission gear 16, the transmission gear 16 is connected to a passive gear 17 provided on the outer wall of the objective lens focusing hand wheel 5, and the micro motor 14 is electrically connected to a battery pack 18 installed on the connecting base 2 through a wire. The battery pack 18 supplies power to the micro motor 14, starts the micro motor 14, and the output shaft of the micro motor 14 is reduced in speed after being decelerated by the micro gear reducer 15, driving the transmission gear 16 to rotate, and the transmission gear 16 drives the objective lens focusing hand wheel 5 to rotate slowly through the passive gear 17, thereby automatically adjusting the focal length of the objective lens group 7 by the motor, making focal length adjustment more convenient and quick.

[0023] like Figure 7 As shown, the rear end of the lens barrel 1 is also equipped with a rubber eye mask 19. When observing, the eye mask 19 covers the eyes, avoiding interference from external light, allowing more focused observation using the night vision device, and improving the effectiveness of the night vision device during combat; the eye mask 19 made of rubber can fit tightly to the eyes, providing better comfort when used.

[0024] like Figure 7 As shown, the eye mask 19 includes a body portion 20 and a fixing portion 21. The fixing portion 21 is an annular slot structure that is clamped to the rear end of the lens barrel 1 through the elasticity of rubber. The connection between the body portion 20 and the fixing portion 21 is a compressible corrugated structure. The slot structure of the fixing portion 21 clamps the eye mask 19 to the eyepiece focusing hand wheel 6 and is automatically fixed by the elastic force of the rubber. It is quick to install and easy to use. The compressible corrugated structure ensures that the eye mask 19 has an elastic effect when it is attached to the eye. Even if the lens barrel 1 shakes, the eye mask 19 will not move, which provides a better observation effect.

[0025] like Figure 1 As shown, a fixing ring 22 is mounted on the end of the eyepiece focusing hand wheel 6 so as to rotate relative to the eyepiece. The fixing ring 22 is fixedly connected to the lens barrel 1 via a connecting rod 23, and the eye mask 19 is mounted on the fixing ring 22 via a slot structure. Since the fixing ring 22 is fixedly connected to the lens barrel 1 via the connecting rod 23, when the eyepiece focusing hand wheel 6 is rotated, the fixing ring 22 does not rotate, thereby preventing the eye mask 19 from rotating along with it. The eyepiece focusing hand wheel 6 can be rotated and adjusted while the eye mask 19 is worn on the eyes, which makes it more convenient to use and more practical.

[0026] like Figure 6 As shown, an infrared emitting device 24 is mounted on the connecting base 2 via a damping shaft 3. When there is no starlight or moonlight at night and the light is weak, the infrared emitting device 24 can be turned on to emit infrared rays, and then the reflected infrared light is received to observe the object. The irradiation direction of the infrared rays can be adjusted by the damping shaft 3, so that the target object can be observed, thereby improving the night observation capability of the night vision device.

[0027] like Figure 6 As shown, the connecting base 2 is also provided with a drive motor 25 that is drivingly connected to the damping shaft 3 of the infrared emitting device 24. The drive motor 25 is electrically connected to the battery pack 18. By starting the drive motor 25 to rotate the damping shaft 3, the direction of the infrared emitting device 24 is adjusted to accurately illuminate the object to be observed, replacing the need to manually adjust the direction of the infrared emitting device 24, making operation more convenient.

[0028] Working process: When using the night vision device, the damping shaft 3 between the connecting seat 2 and the lens barrel 1 is rotated according to the distance between the user's two eyes, thereby rotating the lens barrel 1 and adjusting the distance between the two lens barrels 1 to match the user's eyes; the eye mask 19 is placed on the eyes to avoid interference caused by external light, and then the objective lens focusing hand wheels 5 of the two lens barrels 1 are rotated respectively to make the object image clear. During rotation, the objective lens focusing hand wheel 5 rotates relative to the objective lens frame 9 through the annular boss 13 through the thread, and the slide groove 11 provided at the rear section of the objective lens frame 9 and the slider 12 provided on the inner wall of the lens barrel 1 cooperate to limit the objective lens frame 9 circumferentially to prevent the objective lens frame 9 from rotating, so that the objective lens group 7 moves back and forth, thereby adjusting the focal length of the objective lens group 7; the focal length of the eyepiece is adjusted through the eyepiece focusing hand wheel 6 to correspond to the different vision of the two eyes. The micro motor 14 can also be started. The output shaft of the micro motor 14 is decelerated by the micro gear reducer 15 and the speed is reduced, driving the transmission gear 16 to rotate. The transmission gear 16 drives the objective lens focusing hand wheel 5 to rotate slowly through the passive gear 17, thereby automatically adjusting the focal length of the objective lens group 7 through the motor, making the focal length adjustment more convenient and quick.

[0029] Because the fixing ring 22 is fixedly connected to the lens barrel 1 via the connecting rod 23, the fixing ring 22 does not rotate when the eyepiece focusing hand wheel 6 is rotated, thereby preventing the eye mask 19 from rotating therewith. The eyepiece focusing hand wheel 6 can be rotated and adjusted while the eye mask 19 is worn on the eye, making it more convenient to use and more practical. When there is no starlight or moonlight at night, and the light is weak, the infrared emitting device 24 can be turned on to generate infrared rays, and then the reflected infrared light can be received to observe the object. The direction of the infrared ray can be adjusted by the damping shaft 3, so that the target object can be observed, thereby improving the night observation capability of the night vision device.

[0030] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A binocular low-light-level night vision device with convenient independent focusing, characterized by: The invention comprises two lens barrels (1) and a connecting seat (2); the two ends of the connecting seat (2) are connected to the lens barrel (1) via a damping shaft (3); an image intensifier (4) for amplifying light signals is installed in the middle of the lens barrel (1); an objective lens focusing hand wheel (5) is rotatably installed at the front end of the lens barrel (1), and an eyepiece focusing hand wheel (6) is rotatably installed at the rear end; an objective lens group (7) and an eyepiece group (8) are respectively installed in the objective lens focusing hand wheel (5) and the eyepiece focusing hand wheel (6); the objective lens group (7) The connection structure of the objective lens focusing hand wheel (5) and the connection structure of the eyepiece group (8) and the eyepiece focusing hand wheel (6) are the same; the objective lens group (7) includes an objective lens frame (9) and a lens (10) installed in the objective lens frame (9); the rear section of the objective lens frame (9) is slidably connected to a slider (12) fixedly provided on the inner wall of the lens barrel (1) through a provided sliding groove (11); the front section of the objective lens frame (9) is provided with an external thread and is threadedly connected to an annular boss (13) provided on the inner wall of the objective lens focusing hand wheel (5).

2. The binocular low-light-level night vision device with convenient independent focusing according to claim 1, characterized in that: A micro motor (14) and a micro gear reducer (15) are mounted on the outer wall of the lens barrel (1), the micro motor (14) is in transmission connection with the micro gear reducer (15), the output shaft of the micro gear reducer (15) is connected to a transmission gear (16), the transmission gear (16) is in transmission connection with a passive gear (17) mounted on the outer wall of the objective lens focusing hand wheel (5), and the micro motor (14) is electrically connected to a battery pack (18) mounted on the connecting seat (2) via a wire.

3. A binocular low-light-level night vision device with convenient independent focusing according to claim 1 or 2, characterized in that: The rear end of the lens barrel (1) is also equipped with an eye mask (19) made of rubber.

4. The binocular low-light-level night vision device with convenient independent focusing according to claim 3, characterized in that: The eye mask (19) comprises a cover body (20) and a fixing part (21); the fixing part (21) is an annular slot structure that is clamped to the rear end of the lens barrel (1) through the elasticity of rubber; and the connection between the cover body (20) and the fixing part (21) is a compressible corrugated structure.

5. The binocular low-light-level night vision device with convenient independent focusing according to claim 4, characterized in that: A fixing ring (22) is relatively rotatably mounted on the end of the eyepiece focusing hand wheel (6); the fixing ring (22) is fixedly connected to the lens barrel (1) via a connecting rod (23); and the eye mask (19) is mounted on the fixing ring (22) via a slot structure.

6. The binocular low-light-level night vision device with convenient independent focusing according to claim 1 or 2, characterized in that: An infrared emitting device (24) is mounted on the connecting seat (2) via a damping shaft (3).

7. The binocular low-light-level night vision device with convenient independent focusing according to claim 6, characterized in that: The connecting seat (2) is also provided with a driving motor (25) that is transmission-connected to the damping shaft (3) of the infrared emitting device (24), and the driving motor (25) is electrically connected to the battery pack (18).

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