Visual optical axis correction device for rear shell group of binocular night vision device

Abstract

The utility model belongs to the technical field of night vision equipment, and particularly discloses a visual optical axis correction device for a rear shell group of a binocular night vision device. A base of the device is arranged on a workbench, a rear shell supporting plate is arranged above the base, the two ends of a supporting rod are fixed to the rear shell supporting plate and the base, a double-tube front mirror and a lifting support are fixed to the base, and a light source set is fixed to the position, at the incident end of the double-tube front mirror, of the base. The collimation and division tool is placed on the top face of a rear shell set of the binocular night vision device to be measured on the rear shell supporting plate, the camera is fixed to a sliding block of the lifting support, a lens is aligned with the collimation and division tool, and the monitor is in signal connection with the camera. According to the utility model, the rear shell supporting plate is arranged to position the rear shell group of the binocular night vision device to be measured, and the light source group, the double-tube front lens, the collimation and division tool behind the light path and the camera are correspondingly arranged in front of the light path, so that binocular optical axes can be checked on a monitor and correction can be carried out at the same time, and the binocular night vision device correction device has the characteristics of simple structure, convenience in adjustment and high correction efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to night vision equipment technical field, concretely relates to a simple structure, adjustment convenient, correction efficiency high visual light axis correction device for binocular night vision appearance rear shell group. BACKGROUND

[0002] Monocular binocular night vision appearance is a kind of equipment that combines night vision technology and binocular observation function, it can provide clear image under low light condition, and allow user to observe through both eyes simultaneously, so as to obtain better stereoscopic and depth perception.Monocular binocular night vision appearance is by splitting the image of image intensifier into two optical paths for left and right eyepieces, but the reflecting mirror of binocular eyepiece will cause the optical axis deviation between eyepieces of binocular night vision appearance due to machining and assembly error, and collision or improper use in use process, so that two eyepieces are not on the same optical axis, seriously affect the stability and imaging definition of night vision appearance.

[0003] At present, monocular binocular night vision appearance is generally combined by fixed objective lens, front shell group of image intensifier and collimating assembly, and rear shell group of fixed circuit board and eyepiece.Two eyepieces of binocular night vision appearance are generally calibrated by setting calibrated standard front shell group on rear shell group, then setting calibration plate in front of standard front shell group, then checking the image on calibration plate through two eyepieces of binocular night vision appearance, adjusting the angle and position of reflecting plate on both sides of rear shell group by hand tool, so that the image on calibration plate and the image in night vision appearance are completely coincided, to ensure that the optical axis is completely accurate.However, since binocular needs to closely watch the eyepiece of night vision appearance, and also needs to consider the position between tool and adjusting screw, so the eyes need to constantly look down and look up between eyepiece of night vision appearance and tool during correction, so that not only the adjustment process during correction is more complicated, but also it is easy to cause eyes and cervical fatigue, seriously affect the correction efficiency, and the evidence after correction is not easy to save and lack of credibility. UTILITY MODEL CONTENTS

[0004] In view of the deficiency in prior art, the utility model provides a simple structure, adjustment convenient, correction efficiency high visual light axis correction device for binocular night vision appearance rear shell group.

[0005] The utility model discloses a workbench is provided with the hollow frame structure's rear shell support board, and the rear shell support board is provided with the support pole, and the support pole is fixedly connected with the rear shell support board and the base, and the double -tube front -positioned mirror is fixedly set up on the base, and the light source group is fixedly set up on the base away from the rear shell support board's double -tube front -positioned mirror incident end, and the collimating and dividing tool is detachably placed on the rear shell support board's rear shell body group top surface of the measured binocular night vision instrument, and the lifting support is fixedly set up on the base, and the camera is vertically fixedly set up on the slider of the lifting support and the lens is directly opposite the light path of collimating and dividing tool, and the monitor is signal connected with the camera.

[0006] Further, the rear shell body group is vertically placed on the rear shell support board and the ocular lens is downwardly through the accommodation slot in the middle part of the rear shell support board, and the lens barrel of the double -tube front -positioned mirror is coaxial with the ocular lens barrel of the rear shell body group.

[0007] Further, the left and right side walls and the front and back side walls of the accommodation slot are provided with the positioning surface abutting against the outer wall of the rear shell body group.

[0008] Further, the top surface of the workbench is provided with the accommodation hole, the base is a hollow frame structure and is fixed on the accommodation hole of the workbench, the light source group is fixed at the lower end of the accommodation hole of the workbench, and the double -tube front -positioned mirror is vertically fixed in the accommodation hole of the workbench.

[0009] Further, the light source group comprises left and right spaced light source boxes, and light sources are arranged in the left and right light source boxes respectively, the light sources in the left and right light source boxes are different in color, and the double -tube incident ends of the double -tube front -positioned mirror correspondingly extend into the left and right light source boxes.

[0010] Further, the lifting support further comprises a lifting rod and an adjusting member, the lifting rod is vertically fixed on one side of the base, the slider is movably arranged on the lifting rod, and the adjusting member is screwedly connected on one side of the slider and abuts against the lifting rod or is screwedly connected on the lifting rod and abuts against the end surface of the slider.

[0011] Further, the lifting rod is a sliding rod with screw threads on the surface, the slider is slidingly sleeved on the lifting rod, the adjusting member is an adjusting nut and is screwedly sleeved on the lower end of the lifting rod, and the top end of the adjusting member abuts against the bottom end of the slider.

[0012] Further, the collimation dividing tool comprises a front shell tool, a collimation assembly and an objective lens group, the collimation assembly and the objective lens group are sequentially fixed in the front shell tool, and the front shell tool can cover the opening end of the rear shell group away from the ocular lens, and the light path of the collimation assembly is optically coupled with the light path of the ocular lens of the rear shell group.

[0013] Further, the collimation assembly comprises a collimation mirror body, a collimation mirror group and a light splitting prism, the collimation mirror body is fixed behind the objective lens group in the front shell tool, the collimation mirror group is fixed in front of the collimation mirror body close to the objective lens group, and the light splitting prism is fixed behind the collimation mirror body away from the objective lens group, and the light paths of the objective lens group, the collimation mirror group and the light splitting prism are sequentially coupled.

[0014] Further, the two sides of the front shell tool expose the adjusting screws corresponding to the two sides of the rear shell group.

[0015] The utility model discloses a beneficial effect:

[0016] 1, the utility model discloses a rear shell support plate is set up to support and position the rear shell group of the binocular night vision instrument of measuring, and corresponding light source group, double -tube front mirror are set up at the light path incident end of rear shell group, and collimation dividing tool and camera are set up at the light path emission end, can obtain the image of double -tube front mirror through camera through collimation dividing tool's rear shell group to the binocular night vision instrument of measuring, and the optical axis image of two ocular lenses is directly shown on the monitor, so that the ocular lens optical axis of rear shell group is corrected through the image on the monitor, and the image on the monitor is larger and obvious, so that the eyes and cervical vertebra are not easy to fatigue when correcting, thereby can improve the correction efficiency, and the image after correction can be saved in the memory, and the credibility of the evidence after correction can be improved.

[0017] 2, the utility model discloses that the double -tube front mirror corresponds to the ocular lens of the binocular night vision instrument of measuring, so that the two divided images in double -tube front mirror are overlapped on the monitor simultaneously, thereby the optical axis offset and offset direction of two ocular lenses can be directly viewed in real time when adjusting, effectively simplifies the adjustment process, and also improves the correction efficiency.Especially, the light source box of light source group is provided with light sources of different colors on the two sides, so that the two divided images overlapped on the monitor are different in color, thereby the adjustment amount and adjustment direction of the corresponding ocular lens are facilitated to be determined, and the correction efficiency is further improved.

[0018] In summary, the utility model has the characteristics of simple structure, convenient adjustment and high correction efficiency. ACCURACY

[0019] Figure 1 It is the structure schematic drawing of the utility model;

[0020] Figure 2 It is the partial enlarged view of Figure 1 ;

[0021] Figure 3 is a left lower view of the rear shell support plate structure of the utility model; Figure 2 is a partial structure enlarged view of the utility model;

[0022] Figure 4 is a partial structure enlarged view of the utility model; Figure 2

[0023] Figure 5 is a rear shell support plate structure enlarged view of the utility model;

[0024] Figure 6 is a collimation dividing tool structure enlarged view of the utility model;

[0025] Figure 7 is a collimation assembly structure enlarged view of the utility model;

[0026] In the figure: 1-rear shell body group, 2-base, 3-supporting rod, 4-rear shell support plate, 401-giving way groove, 5-double tube front mirror, 6-light source group, 7-collimation dividing tool, 701-front shell body tool, 702-collimation assembly, 7021-collimation mirror body, 7022-collimation mirror group, 7023-splitting prism, 703-objective lens group, 8-lifting support, 801-sliding block, 802-lifting rod, 803-adjusting piece, 9-camera, 10-monitor. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further detailed in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.

[0028] As shown in Figures 1 to 7 , the utility model includes base 2, supporting rod 3, rear shell support plate 4, double tube front mirror 5, light source group 6, collimation dividing tool 7, lifting support 8, camera 9, monitor 10, base 2 is set on the workbench, rear shell support plate 4 is hollow frame structure and is set above base 2 and is circumferentially spaced apart and is provided with a plurality of supporting rods 3, supporting rod 3 is vertically set and both ends are fixedly connected with rear shell support plate 4 and base 2, double tube front mirror 5 is fixedly set on base 2, light source group 6 is fixedly set on the base 2 far from the incident end of double tube front mirror 5 of rear shell support plate 4, collimation dividing tool 7 is detachably placed on the top surface of the rear shell body group 1 of the double eye night vision instrument to be measured on rear shell support plate 4, lifting support 8 is fixedly set on base 2, camera 9 is vertically fixedly set on the sliding block 801 of lifting support 8 and the lens is directly opposite the light path of collimation dividing tool 7, monitor 10 is signal connected with camera 9.

[0029] ​The rear shell group 1 is vertically placed on the rear shell support plate 4 and the ocular lens penetrates through the accommodation slot 401 in the middle of the rear shell support plate 4 downward, and the lens barrel of the double-tube front lens 5 is coaxial with the ocular lens barrel of the rear shell group 1.

[0030] The left and right side walls and the front and back side walls of the accommodation slot 401 are provided with positioning surfaces abutting the outer wall of the rear shell group 1.

[0031] The workbench top surface is provided with an accommodation hole, the base 2 is a hollow frame structure and is fixed on the accommodation hole of the workbench, the light source group 6 is fixed at the lower end of the accommodation hole of the workbench, and the double-tube front lens 5 is vertically fixed in the accommodation hole of the workbench.

[0032] The light source group 6 includes left and right spaced light source boxes, light sources arranged in the left and right light source boxes respectively, the light sources in the left and right light source boxes are different in color, and the double-tube incident ends of the double-tube front lens 5 respectively extend into the left and right light source boxes.

[0033] The lifting support 8 further includes a lifting rod 802 and an adjusting member 803, the lifting rod 802 is vertically fixed on one side of the base 2, the sliding block 801 is movably arranged on the lifting rod 802, and the adjusting member 803 is threadedly connected to one side of the sliding block 801 and abuts against the lifting rod 802, or the adjusting member 803 is threadedly connected to the lifting rod 802 and abuts against the end surface of the sliding block 801.

[0034] The lifting rod 802 is a sliding rod with thread lines on the surface, the sliding block 801 is slidingly sleeved on the lifting rod 802, the adjusting member 803 is an adjusting nut and is threadedly sleeved on the lifting rod 802 at the lower end of the sliding block 801, and the top end of the adjusting member 803 abuts against the bottom end of the sliding block 801.

[0035] The collimation dividing tool 7 includes a front shell tool 701, a collimation assembly 702 and an objective lens group 703, the collimation assembly 702 and the objective lens group 703 are sequentially fixed in the front shell tool 701, the front shell tool 701 can be covered on the opening end of the rear shell group 1 away from the ocular lens, and the light output path of the collimation assembly 702 is optically coupled with the light input path of the ocular lens of the rear shell group 1.

[0036] The collimation assembly 702 includes a collimation lens body 7021, a collimation lens group 7022 and a light splitting prism 7023, the collimation lens body 7021 is fixed behind the objective lens group 703 in the front shell tool 701, the collimation lens group 7022 is fixed in front of the collimation lens body 7021 close to the objective lens group 703, the light splitting prism 7023 is fixed behind the collimation lens body 7021 away from the objective lens group 703, and the light paths of the objective lens group 703, the collimation lens group 7022 and the light splitting prism 7023 are sequentially coupled.

[0037] The front housing fixture 701 exposes the corresponding adjusting screws on both sides of the rear housing assembly 1.

[0038] The dual-tube front mirror 5 is provided with a reticle, and the reticle is provided with dividing lines.

[0039] Working principle and process of this utility model:

[0040] like Figures 1 to 7 As shown, before optical axis calibration, according to the size of the rear housing assembly 1 of the binocular night vision device under test, select the corresponding rear housing support plate 4, dual-tube front lens 5 and collimation reticle fixture 7, install and debug the aforementioned components as required, and then adjust the slider 801 to make the camera 9 at a suitable height to complete the calibration preparation.

[0041] During optical axis calibration, the rear housing assembly 1 of the binocular night vision device under test is inserted into the clearance groove 401 of the rear housing support plate 4 with the eyepiece facing downwards. Then, the light source assembly 6, camera 9, and monitor 10 are turned on. The light emitted by the light source assembly 6 passes through the dual-tube front lens 5 and projects the reticle pattern into the eyepiece of the rear housing assembly 1. The light emitted from the eyepiece passes through the reflector assembly and enters the beam splitter prism 7023, thereby merging the two beams into one beam. The beam then passes through the collimating lens assembly 7022 and the objective lens assembly 703 in sequence before exiting. The light emitted from the collimating reticle fixture 7 enters the camera 9 and finally the dual-tube front lens 7023 enters the objective lens assembly 7023. The reticle image of the lens 5, after passing through the rear housing assembly 1 and the collimating reticle fixture 7, is displayed directly on the monitor 10. Because the light sources in the left and right light source boxes of the light source assembly 6 are of different colors, the corresponding reticle patterns displayed on the monitor 10 are also of different colors. Therefore, based on the offset and direction of the reticle patterns of different colors from the center, the adjusting screws on the corresponding sides of the rear housing assembly 1 can be adjusted to ensure that the offset and direction of the reticle patterns of the two colors are within the allowable range. Finally, the calibrated rear housing assembly 1 is removed, completing the optical axis calibration of the binocular night vision device's rear housing assembly. If necessary, the calibrated reticle pattern displayed on the monitor 10 is saved before removing the rear housing assembly 1 as evidence of the calibration.

[0042] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model 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 utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A visual axis correction device for binocular night vision goggle rear housing set, characterized in that: It includes base (2), support rod (3), rear shell support plate (4), double tube front mirror (5), light source group (6), collimation division tooling (7), lifting support (8), camera (9), monitor (10), the base (2) is arranged on the workbench, the rear shell support plate (4) is hollow frame structure and is arranged above the base (2) and is circumferentially spaced apart and is provided with a plurality of support rods (3), the support rod (3) is vertically arranged and both ends are respectively fixedly connected with the rear shell support plate (4) and the base (2), the double tube front mirror (5) is fixedly arranged on the base (2), the light source group (6) is fixedly arranged on the base (2) away from the incident end of the double tube front mirror (5) of the rear shell support plate (4), the collimation division tooling (7) is detachably placed on the top surface of the rear shell group (1) of the binocular night vision instrument to be measured on the rear shell support plate (4), the lifting support (8) is fixedly arranged on the base (2), the camera (9) is vertically fixedly arranged on the sliding block (801) of the lifting support (8) and the lens is opposite the light exit path of the collimation division tooling (7), and the monitor (10) is signal connected with the camera (9).

2. The device for correction of visual axis of binocular night vision goggles rear housing set according to claim 1, characterized in that: The rear shell group (1) can be inserted and pulled and is vertically placed on the rear shell support plate (4) and the ocular lens penetrates the accommodation slot (401) in the middle of the rear shell support plate (4) downward, and the lens barrel of the double tube front mirror (5) is coaxial with the ocular lens barrel of the rear shell group (1).

3. The device for correcting the visual axis of binocular night vision goggles according to claim 2, characterized in that: The left and right side walls and the front and rear side walls of the accommodation slot (401) are provided with positioning surfaces abutting the outer wall of the rear shell group (1).

4. The device for correcting the visual axis of the binocular night vision goggles rear housing group according to claim 1, characterized in that: The workbench top surface is provided with an accommodation hole, the base (2) is a hollow frame structure and is fixed on the accommodation hole of the workbench, the light source group (6) is fixed at the lower end of the accommodation hole of the workbench, and the double tube front mirror (5) is vertically fixed in the accommodation hole of the workbench.

5. The device for correction of visual axis of binocular night vision goggles rear housing set according to claim 4, characterized by the fact that: The light source group (6) includes left and right spaced light source boxes, light sources arranged in the left and right light source boxes respectively, the light sources in the left and right light source boxes are different in color, and the double tube incident ends of the double tube front mirror (5) respectively extend into the left and right light source boxes.

6. The device for correction of visual axis of binocular night vision goggles rear housing set according to claim 4, characterized by: The lifting support (8) further includes a lifting rod (802) and an adjusting member (803), the lifting rod (802) is vertically fixed on one side of the base (2), the sliding block (801) is movably arranged on the lifting rod (802), and the adjusting member (803) is threadedly connected on one side of the sliding block (801) and abuts against the lifting rod (802), or the adjusting member (803) is threadedly connected on the lifting rod (802) and abuts against the end surface of the sliding block (801).

7. The device for correction of visual axis of binocular night vision goggles rear housing set according to claim 6, characterized by the fact that: The lifting rod (802) is a sliding rod with threads on the surface, the sliding block (801) is slidably sleeved on the lifting rod (802), the adjusting member (803) is an adjusting nut and is threadedly sleeved on the lifting rod (802) at the lower end of the sliding block (801), and the top end of the adjusting member (803) abuts against the bottom end of the sliding block (801).

8. The device for correction of visual axis of binocular night vision goggles rear housing set according to any one of claims 1 to 7, characterized in that: The collimation dividing tool (7) comprises a front shell tool (701), a collimation assembly (702) and an objective lens group (703), the collimation assembly (702) and the objective lens group (703) are sequentially fixed in the front shell tool (701), the front shell tool (701) can be covered on the opening end of the rear shell group (1) away from the ocular lens, and the light path of the collimation assembly (702) is optically coupled with the light path of the ocular lens of the rear shell group (1).

9. The device for correction of visual axis of binocular night vision goggles rear housing set according to claim 8, characterized by the fact that: The collimation assembly (702) comprises a collimation mirror body (7021), a collimation mirror group (7022) and a light splitting prism (7023), the collimation mirror body (7021) is fixed behind the objective lens group (703) in the front shell tool (701), the collimation mirror group (7022) is fixed in front of the collimation mirror body (7021) close to the objective lens group (703), the light splitting prism (7023) is fixed behind the collimation mirror body (7021) away from the objective lens group (703), and the light paths of the objective lens group (703), the collimation mirror group (7022) and the light splitting prism (7023) are sequentially coupled.

10. The device for correcting the visual axis of binocular night vision goggles according to claim 8, characterized in that: The front shell tool (701) exposes the adjusting screws corresponding to the two sides of the rear shell group (1) on the two sides.

Images