A parallax testing device for holographic sights

Abstract

The utility model discloses parallax testing device relates to holographic sighting telescope test technical field, including support base plate and holographic sighting telescope of being located at support base plate top, the top of support base plate is equipped with clamping assembly, and is equipped with parallel light pipe through clamping assembly, the top of support base plate is fixedly equipped with cross -beam, and the inside rotation of cross -beam is equipped with first screw rod, and the rod wall of first screw rod is equipped with vertical support with thread, and the inside rotation of vertical support is equipped with second screw rod, and the rod wall of second screw rod is equipped with mounting block with thread, and the outer wall of mounting block is fixedly equipped with CCD camera, and the top of support base plate is fixedly equipped with placing block, and placing block is located at the bottom of holographic sighting telescope. The utility model can move on longitudinal and lateral of calibration camera to simulate human eye position, and shoot the scale pattern with the help of CCD camera, to this, complete parallax measurement and calculation to holographic sighting telescope.

Description

Technical Field

[0001] This utility model relates to the field of holographic sight testing technology, specifically to a parallax testing device. Background Technology

[0002] Parallax refers to the apparent displacement between the reticle and the target when the shooter's eye moves relative to the eyepiece. An ideal sight should ensure no relative displacement between the reticle and the target when the shooter's eye moves within the exit pupil, i.e., "parallax-free." However, due to limitations in manufacturing precision and assembly processes, actual products all exhibit varying degrees of parallax. Therefore, conducting parallax testing is crucial for product quality control.

[0003] Traditional detection methods primarily rely on the operator's subjective visual judgment, that is, estimating whether the reticle drifts with eye movement by observing with the naked eye and slightly moving the head. This method is highly dependent on personal experience and intuition. Although there are some detection schemes based on optical calibration, their devices are often complex in structure, expensive, or have cumbersome operating procedures, making it difficult to achieve rapid and efficient widespread application on production lines or at ordinary user ends.

[0004] Therefore, we propose a parallax testing device for holographic sights to solve the above problems. Utility Model Content

[0005] In view of the problems existing in the above-mentioned parallax testing devices, this utility model is proposed.

[0006] Therefore, the purpose of this invention is to provide a parallax testing device for holographic sights, which solves the problems of complex structure and high cost of existing devices.

[0007] To achieve the above objectives, this utility model provides the following technical solution: A parallax testing device for a holographic sight includes a supporting base plate and a holographic sight mounted on top of the supporting base plate. The top of the supporting base plate is provided with a clamping assembly, and a collimator is provided through the clamping assembly. A crossbar is fixedly provided on the top of the supporting base plate. A first lead screw is rotatably passed through the inside of the crossbar. A vertical frame is threaded onto the wall of the first lead screw. A second lead screw is rotatably passed through the inside of the vertical frame. A mounting block is threaded onto the wall of the second lead screw. A CCD camera is fixedly mounted on the outer wall of the mounting block. A placement block is fixedly provided on the top of the support base plate, and the placement block is located at the bottom of the holographic sight.

[0008] Preferably, a horizontal guide rod is fixedly provided on the inner wall of the cross frame, and the horizontal guide rod slides through the interior of the vertical frame. A vertical guide rod is fixedly provided on the inner wall of the vertical frame, and the vertical guide rod slides through the interior of the mounting block.

[0009] Preferably, both the horizontal guide rod and the vertical guide rod comprise two guide rods.

[0010] Preferably, a horizontal crank handle is fixedly provided at the end of the first lead screw, and a vertical crank handle is fixedly provided at the end of the second lead screw.

[0011] Preferably, the clamping assembly includes a base frame and a clamp. The base frame is fixedly mounted on the top of the support base plate, and the clamp is sleeved on the outside of the parallel light tube and screwed with mounting bolts between it and the top of the base frame.

[0012] Preferably, an XYZ axis displacement platform is fixedly provided on the top of the placement block, a platform is fixedly provided on the top of the XYZ axis displacement platform, and the holographic sight is provided above the platform.

[0013] Preferably, both ends of the top of the support base plate are fixed with pull handles.

[0014] Preferably, the collimator includes a light source, a lens group, and a pattern plate.

[0015] The technical effects and advantages provided by this utility model in the above technical solution are as follows: 1. This utility model, through the provision of a supporting base plate, a collimator, a horizontal frame, a first lead screw, a vertical frame, a second lead screw, a holographic sight, and a CCD camera, can move the calibration camera longitudinally and laterally to simulate the position of the human eye. It also uses the CCD camera to capture the differentiation pattern of the holographic sight and the collimator pattern plate. Through external software, it can measure parallax and detect indicators such as image clarity and brightness. The device has a simple structure, is easy to operate, and has low cost.

[0016] 2. This utility model, through the provided placement block, XYZ axis displacement platform, clamping screw and clamping assembly, can adjust and fix the position of the collimator and holographic sight, ensuring the accuracy of the test. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is an enlarged view of a partial side view of the present invention; Figure 3This is a partial structural schematic diagram of the present invention.

[0019] Explanation of reference numerals in the attached figures: 1. Support base plate; 2. Holographic sight; 3. Collimator; 4. Horizontal frame; 5. First lead screw; 6. Vertical frame; 7. Second lead screw; 8. Mounting block; 9. CCD camera; 10. Placement block; 11. Guide rod; 12. Horizontal crank; 13. Base frame; 14. Clamp; 15. Mounting bolt; 16. XYZ axis displacement platform; 17. Placement platform; 18. Second adjusting screw; 19. First adjusting screw; 20. Pull handle; 21. Vertical crank; 22. Horizontal guide rod; 23. Third adjusting screw. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0021] This utility model discloses a parallax testing device for a holographic sight.

[0022] This utility model provides, for example Figure 1-3 The parallax testing device for the holographic sight shown includes a support base plate 1 and a holographic sight 2 mounted on top of the support base plate 1. Both ends of the top of the support base plate 1 are fixed with pull handles 20 for easy transfer and transportation. A clamping assembly is provided on the top of the support base plate 1, and a collimator 3 is mounted through the clamping assembly. The collimator 3 provides a parallel light source and includes a light source, a lens group, and a pattern plate. The lens group shapes the diverging light emitted by the light source into parallel light. The pattern plate serves as an aiming background or provides a reference for simulating the movement of the pattern on the target object. A crossbeam 4 is fixed on the top of the support base plate 1. A first lead screw 5 is rotatably threaded through the crossbeam 4. A vertical frame 6 is threaded onto the wall of the first lead screw 5. A second lead screw 7 is rotatably threaded through the vertical frame 6. A horizontal crank 12 is fixed to the end of the first lead screw 5, and a vertical crank 21 is fixed to the end of the second lead screw 7. A mounting block 8 is threaded onto the wall of the second lead screw 7. A horizontal guide rod 22 is fixedly installed on the inner wall of the cross frame 4, and the horizontal guide rod 22 slides through the interior of the vertical frame 6. A vertical guide rod 11 is fixedly installed on the inner wall of the vertical frame 6, and the vertical guide rod 11 slides through the interior of the mounting block 8. Both the horizontal guide rod 22 and the vertical guide rod 11 consist of two guide rods. A CCD camera 9 is fixedly installed on the outer wall of the mounting block 8.

[0023] In order to fix the positions of the collimator 3 and the holographic sight 2 and ensure the accuracy of the test, such as Figure 1 and Figure 3As shown, a placement block 10 is fixedly mounted on the top of the support base plate 1, and the placement block 10 is located at the bottom of the holographic sight 2. An XYZ axis displacement platform 16 is fixedly mounted on the top of the placement block 10, and a platform 17 is fixedly mounted on the top of the XYZ axis displacement platform 16. The holographic sight 2 is mounted above the platform 17. The clamping assembly includes a base frame 13 and a clamp 14. The base frame 13 is fixedly mounted on the top of the support base plate 1, and the clamp 14 is fitted onto the outside of the collimator 3 and screwed with a mounting bolt 15 between it and the top of the base frame 13.

[0024] The working principle and process are as follows: Complete the installation of the collimator 3: By cooperating with the base frame 13 of the clamping assembly and the clamp 14, place the collimator 3 on the top of the base frame 13, put the clamp 14 on the outside of the collimator 3, and then screw in the mounting bolt 15 to make the clamp 14 firmly fix the collimator 3, ensuring that the collimator 3 is installed horizontally and the light output direction is aligned with the holographic sight 2, so as to provide a stable parallel light source for testing. Determining the position of the holographic sight: On the support base plate 1, the placement block 10, the XYZ axis displacement platform 16, and the mounting platform 17 are sequentially connected and fixed with screws. The holographic sight 2 is then fixed to the mounting platform 17 using clips or screws. Rotating the first adjusting screw 19 and the second adjusting screw 18 adjusts the position of the mounting platform 17 in the XY horizontal plane, while rotating the third adjusting screw 19 adjusts the height of the mounting platform 17 in the Z axis. The position of the holographic sight 2, fixed above the mounting platform 17, is adjusted accordingly. The holographic sight 2 is adjusted until it is at the same height as the collimator 3, and the line connecting their centers is horizontal with the support base plate 1. This position is the location of the holographic sight 2. Adjust the CCD camera to the center position: such as Figure 3 As shown, cranking the horizontal crank 12 rotates the first lead screw 5. Since the first lead screw 5 is threadedly engaged with the vertical frame 6, and the horizontal guide rod 22 on the inner wall of the cross frame 4 guides and restricts the movement of the vertical frame 6, the vertical frame 6 will move smoothly in the horizontal direction along the horizontal guide rod 22. The vertical frame 6 drives the mounting block 8 and the CCD camera 9 to move horizontally synchronously, adjusting the horizontal position of the CCD camera 9 so that the CCD camera 9, the holographic sight 2, and the collimator 3 are in a straight line. Cranking the vertical crank 21 rotates the second lead screw 7. The mounting block 8, which is threadedly engaged with the second lead screw 7, moves up and down under the guidance of the vertical guide rod 11, thereby driving the CCD camera 9 to move up and down, adjusting the vertical position of the CCD camera 9 so that the centers of the CCD camera 9, the holographic sight 2, and the collimator 3 are in a straight line.

[0025] The CCD camera 9 is connected to a computer, and the video content is displayed synchronously on the computer. At the start of the test, the CCD camera 9 is positioned in the center, meaning that the centers of the CCD camera 9, the holographic sight 2, and the collimator 3 are aligned in a straight line, simulating the situation where the human eye is in the exact center of the viewing window. A photo is taken and recorded, at which point the image displays the reticle pattern of the holographic sight 2 and the pattern plate in the collimator 3, and this image is used as the reference image.

[0026] Crank the horizontal crank 12 to move the CCD camera 9 horizontally to the leftmost and rightmost edges of the holographic sight eyebox; crank the vertical crank 21 to move the CCD camera 9 vertically to the topmost and bottommost edges of the holographic sight eyebox, capture images at four extreme off-axis angles, compare them with the reference image, and measure and calculate the angular fraction of the apparent movement of the reticle pattern.

[0027] By cranking the horizontal crank 12 and the vertical crank 21, the CCD camera 9 is moved to the four diagonal extreme positions of the holographic sight eyebox, and images are captured at the four diagonal angles. These images are then compared with the reference image, and the angular fraction of the apparent movement of the reticle pattern is measured and calculated.

[0028] The parallax performance of a holographic sight is measured by the magnitude of its arc fraction.

[0029] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A parallax testing device for a holographic sight, comprising a supporting base plate (1) and a holographic sight (2) disposed on top of the supporting base plate (1), characterized in that, The top of the support base plate (1) is provided with a clamping assembly, and a parallel light tube (3) is provided through the clamping assembly. A cross frame (4) is fixedly provided on the top of the support base plate (1). A first lead screw (5) is rotatably passed through the inside of the cross frame (4). A vertical frame (6) is threaded on the rod wall of the first lead screw (5). A second lead screw (7) is rotatably passed through the inside of the vertical frame (6). An installation block (8) is threaded on the rod wall of the second lead screw (7). A CCD camera (9) is fixedly provided on the outer wall of the installation block (8). The top of the support base plate (1) is fixedly provided with a placement block (10), which is located at the bottom of the holographic sight (2).

2. The parallax testing device for a holographic sight according to claim 1, characterized in that, A horizontal guide rod (22) is fixedly provided on the inner wall of the cross frame (4). The horizontal guide rod (22) slides through the interior of the vertical frame (6). A vertical guide rod (11) is fixedly provided on the inner wall of the vertical frame (6). The vertical guide rod (11) slides through the interior of the mounting block (8).

3. The parallax testing device for a holographic sight according to claim 2, characterized in that, Both the horizontal guide rod (22) and the vertical guide rod (11) contain two guide rods.

4. The parallax testing device for a holographic sight according to claim 1, characterized in that, The first lead screw (5) is fixedly provided with a horizontal crank handle (12) at its end, and the second lead screw (7) is fixedly provided with a vertical crank handle (21) at its end.

5. The parallax testing device for a holographic sight according to claim 1, characterized in that, The clamping assembly includes a base frame (13) and a clamp (14). The base frame (13) is fixedly mounted on the top of the support base plate (1). The clamp (14) is sleeved on the outside of the parallel light tube (3) and is screwed with a mounting bolt (15) between it and the top of the base frame (13).

6. The parallax testing device for a holographic sight according to claim 1, characterized in that, The top of the placement block (10) is fixedly provided with an XYZ axis displacement platform (16), the top of the XYZ axis displacement platform (16) is fixedly provided with a platform (17), and the holographic sight (2) is provided above the platform (17).

7. The parallax testing device for a holographic sight according to claim 1, characterized in that, Both ends of the top of the support base plate (1) are fixed with pull handles (20).

8. The parallax testing device for a holographic sight according to claim 1, characterized in that, The collimator (3) includes a light source, a lens group, and a pattern plate.

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