A vertical dual camera prism test collimator center and parallax device

Abstract

The present application provides a kind of vertical dual-camera prism test collimator center and parallax device, including light source, parallel light pipe, measured product placement area, light splitting prism and two vertically arranged cameras, optical path polarization adjustment module and dynamic target generation module.The device is with camera cooperation light splitting prism, replace traditional camera movement detection, without moving camera can be realized dual-view detection simultaneously, shorten single parallax test time, improve efficiency, shorten single product detection time.The device integrates center alignment and parallax detection, can also detect lens optical defects simultaneously, without additional equipment, and reduce mechanical wear and maintenance cost.Light splitting prism makes two parallel light paths of parallel light pipe received by parallel operation of dual camera, cross verification of dual camera data, improve the reliability of results.Parallel light pipe simulates 20-100m target distance, detects the actual use demand.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of collimator detection, and particularly relates to a vertical double-camera prism testing collimator center and parallax device. BACKGROUND

[0002] The collimator is an optical aiming component for precise positioning, and the center alignment accuracy and parallax control directly affect the positioning reliability in use, and is widely used in scenes with extremely high precision requirements such as firearms, crossbows, astronomical observation, etc.

[0003] Due to the large variety of products and high precision requirements, the production and testing links of the collimator are still mainly manually operated by manpower, and only a few scenes replace the manual collimator target center and parallel light tube target center visual inspection action by a single visual camera.

[0004] In terms of parallax detection, the prior art needs to take pictures at least two different positions by moving the camera to complete the detection, because the parallax judgment depends on the relative position comparison of the target center and the red dot under different angles. This camera moving detection method has the following defects: on the one hand, the parallax detection of a single product needs to move the camera 4-6 times repeatedly, and the single detection takes as long as 2.5s, which leads to extremely low overall test efficiency and seriously restricts the promotion of automatic production; on the other hand, additional detection deviation is easily introduced during the camera moving process due to mechanical vibration and positioning error, and the multiple movements will aggravate the equipment wear and tear and increase the maintenance cost.

[0005] At the same time, the existing visual detection equipment can only realize the basic alignment judgment of the target center and the red dot, and cannot simultaneously complete additional functions such as lens optical defect (such as scratch, bubble) detection and optical path stability verification, so additional detection equipment needs to be configured, which leads to complicated production procedures and high equipment investment cost.

[0006] In addition, the problems such as environmental light interference and insufficient redundancy of image data taken by a single camera will further affect the reliability of the detection results, and it is difficult to meet the mass production test requirements of high-precision collimators. SUMMARY

[0007] The purpose of the present application is to provide a vertical double-camera prism testing collimator center and parallax device to solve the problems raised in the background.

[0008] Therefore, the present application provides a vertical double-camera prism testing collimator center and parallax device, which comprises a light source, a parallel light tube, a measured product placement area, a light splitting prism, two cameras arranged vertically, an optical path polarization adjusting module and a dynamic target center generating module.

[0009] The light source is used to provide illumination for the parallel light tube;

[0010] The collimator is used for simulating a target distance of 20-100 m and generating a reference target center;

[0011] The product placement area is arranged on the light path between the collimator and the light splitting prism, and is used for placing the tested sighting device;

[0012] The light splitting prism is used for splitting the light path generated by the collimator into two paths at 90 degrees.

[0013] The two cameras correspond to the two light paths split by the light splitting prism respectively, and are used for observing the image information converted by the collimator, so as to realize the testing of the center and parallax of the sighting device.

[0014] The light path polarization adjusting module comprises an adjustable polaroid arranged on the light path between the collimator and the product placement area, the adjustable polaroid is used for adjusting the polarization direction of the light path incident to the tested sighting device, the adjusting range is 0-90 degrees, and the light splitting prism is a polarization light splitting prism adapted to the polarization adjustment.

[0015] The dynamic target center generating module is arranged in the collimator and is a switchable dynamic target center generating component arranged in the internal light path of the collimator, can generate reference target centers with different shapes, different sizes and dynamic movement, and the target center parameters can be adjusted in real time through the control system.

[0016] In the application, in a further embodiment, one of the two cameras is arranged along the horizontal direction to correspond to the horizontal light path split by the light splitting prism, and the other camera is arranged along the vertical direction to correspond to the vertical light path split by the light splitting prism, and the fields of view of the two cameras converge to the target center of the collimator through the light splitting prism.

[0017] In the application, in a further embodiment, the light splitting prism is fixed on the support, one camera is mounted on the rear end of the support, and the other camera is mounted on the lower end of the support.

[0018] In the application, in a further embodiment, the application further comprises an image processing unit connected with the two cameras, used for receiving and analyzing the image information captured by the cameras to obtain the testing results of the center and parallax of the sighting device, and the image processing unit can compare and analyze the position relationship between the red dot of the sighting device and the reference target center in the images obtained by the two cameras.

[0019] In the application, in a further embodiment, the reference target center generated by the collimator and the red dot of the sighting device can be in the same field of view of the two cameras, so that the cameras can capture the positions of the two.

[0020] In the present application, a further embodiment is that the shooting angles of the two cameras cover the optical state of the sighting device in horizontal and vertical directions, and the optical defects of the sighting device lens in horizontal and vertical directions can be synchronously captured.

[0021] In the present application, a further embodiment is that the two cameras are operated in parallel to receive two light paths of the collimator by the light splitting prism.

[0022] In the present application, a further embodiment is that the two cameras can generate two sets of independent image data for the same reference target and the red dot of the sighting device, and the consistency of the two sets of data can be compared.

[0023] In the present application, a further embodiment is that the collimator generates a vertical simulated light path to the light splitting prism, and the simulated light path is received by the two cameras after passing through the light splitting prism, and the simulated light path can pass through the sighting device to simulate the light path state when the sighting device is actually used.

[0024] In the present application, a further embodiment is that the light source is a stable monochromatic light source, which can ensure that the reference target image generated by the collimator is clear and stable.

[0025] The present application has the following beneficial effects:

[0026] By using two cameras arranged vertically and cooperating with the light splitting prism, the traditional camera movement detection method is replaced, and synchronous detection of two angles of view can be realized without moving the camera, so that the single parallax test time is shortened from 2.5s to 0.5s, and the efficiency is improved by 400%; for 4-6 times of parallax detection of a single product, the detection time is shortened by 8-12s, which effectively meets the high efficiency demand of automatic production.

[0027] The device integrates the centering and parallax detection functions, and the two cameras arranged vertically can synchronously complete the optical defect detection of the sighting device lens in horizontal and vertical directions, without the need for additional configuration of separate detection equipment, thereby reducing the equipment procurement cost; at the same time, the mechanical wear of the traditional camera movement structure is avoided, and the equipment maintenance frequency and cost are reduced.

[0028] The light splitting prism only allows the specific wavelength light beam generated by the collimator to pass through and refract to the two cameras, so that the two cameras can receive two light paths of the collimator in parallel, can filter environmental stray light interference, and ensure image clarity; the two sets of independent image data generated by the two cameras can exclude false judgments caused by lens pollution of a single camera through cross verification, and improve the reliability of the detection results.

[0029] The device can cooperate with the image processing unit to automatically compare and analyze the positional relationship between the red dot and the reference target, without manual intervention, thereby solving the problems of low efficiency and large error of traditional manual visual inspection, and providing key test support for automatic production of sighting devices.

[0030] The collimator can simulate a target distance of 20-100 m, the simulated light path passes through the measured sighting device, restores the light path state of the sighting device in actual use, makes the detection result more in line with the actual use requirement, and ensures the use precision of the product after leaving the factory. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a structural schematic diagram of the present application;

[0032] Figure 2 is a light path transmission schematic diagram of the present application. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly described below. Obviously, the described embodiments are 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 belong to the scope of protection of the present application.

[0034] The embodiment provides a camera 4 plus prism test sighting device center and parallax device, which comprises a light source, a collimator 1, a measured product placement area 2, a light splitting prism 3, and two cameras 4 arranged vertically, a light path polarization adjusting module, and a dynamic target center generating module.

[0035] The light source is used to provide illumination for the collimator 1; the collimator 1 is used to simulate a target distance of 20-100 m and generate a reference target center; the measured product placement area 2 is arranged on a light path 5 between the collimator 1 and the light splitting prism 3, and is used to place a measured sighting device; the light splitting prism 3 is used to vertically split the light path 5 generated by the collimator 1 into two paths at 90 degrees; the two cameras 4 correspond to the two light paths 5 split by the light splitting prism 3, and are used to observe image information converted by the collimator 1, so as to realize the test of the center and parallax of the sighting device.

[0036] Through the light path 5 distribution function of the light splitting prism 3, the single light path 5 is converted into two vertical light paths 5, so that the cameras 4 can synchronously obtain images of two visual angles without moving, and the low efficiency problem caused by the traditional "moving camera 4 to obtain multiple visual angles" is solved.

[0037] After the light source is started, illumination is provided for the collimator 1, the collimator 1 emits a light path 5 simulating a long-distance scene and generates a reference target center; the light path 5 first passes through the measured sighting device placed in the detection area (at this time, the red dot of the sighting device and the reference target center form an overlay image), and then enters the light splitting prism 3 and is split into horizontal and vertical two paths; the two light paths 5 are respectively received by the two cameras 4 arranged vertically, the cameras 4 convert the images into electrical signals and transmit them to subsequent units, so as to complete the center alignment and parallax detection.

[0038] Instead of the traditional camera movement detection mode, the mechanical action time is reduced structurally, laying the foundation for efficient detection. At the same time, the integrated design reduces the space occupied by the equipment, adapting to the compact layout requirements of the production line.

[0039] To further improve the stability of the light path 5, an adjustable diaphragm can be added between the collimator 1 and the product placement area 2, such as a manual diaphragm with a diameter of 5-10mm. By adjusting the aperture of the diaphragm, the size of the light beam entering the sight can be controlled to adapt to the detection needs of lenses of different sizes. When detecting small caliber lenses, reducing the aperture of the diaphragm can reduce the entry of stray light; when detecting large caliber lenses, increasing the aperture can ensure that the light beam covers the entire lens. This design can accommodate φ10-50mm sight lenses without replacing core components, improving the versatility of the equipment and solving the problem of traditional equipment that requires replacement of adaptive tooling to detect different specifications of products.

[0040] In this embodiment, further, one camera 4 is arranged along the horizontal direction to correspond to the horizontal light path 5 split by the light splitting prism 3, and the other camera 4 is arranged along the vertical direction to correspond to the vertical light path 5 split by the light splitting prism 3, and the fields of view of the two cameras 4 converge to the target center of the collimator 1 through the light splitting prism 3.

[0041] The optical properties of the light splitting prism 3 can distribute the incident light path 5 at a 90-degree angle, ensuring that the horizontal and vertical cameras 4 can observe the same target center from a vertical angle of view; the convergence design of the camera 4 field of view avoids detection blind spots caused by angle deviation.

[0042] After the light path 5 of the collimator 1 enters the light splitting prism 3, part of the light is refracted along the horizontal direction to the horizontal camera 4, and the other part of the light is refracted along the vertical direction to the vertical camera 4; since the lens axes of the two cameras 4 are aligned to the reference target center after the light path 5 of the light splitting prism 3, they can simultaneously capture the relative position relationship of the "reference target center + sight red dot" in the horizontal and vertical directions, such as the horizontal red dot offset and the vertical red dot offset.

[0043] The vertical angle of view covers the core detection dimension of the sight, avoiding the problem of missing detection in a single angle of view; at the same time, the simultaneous shooting of the camera 4 changes the parallax detection from "completed at different times" to "real-time synchronization", improving the efficiency of single detection by 400%.

[0044] In the above content, a polarizer can also be installed in front of the lens of the horizontal camera 4 and the vertical camera 4, respectively, and the polarization directions of the two polarizers are perpendicular to each other. When the light path 5 passes through the sighting lens, if the lens has stress birefringence (such as lens deformation caused by assembly pressure), the vibration direction of the polarized light will be rotated, and the image gray value captured by the camera 4 will change regularly. The image processing unit can quantize the lens stress distribution by analyzing the gray value change amplitude, and realize the additional function of "parallax detection + stress detection". The problem that the traditional equipment cannot find the hidden stress of the lens in the detection stage, resulting in precision drift due to stress release in product use, is solved.

[0045] In the embodiment, further, a support 6 is included, the light splitting prism 3 is fixed on the support 6, one camera 4 is installed at the rear end of the support 6, and the other camera 4 is installed at the lower end of the support 6.

[0046] The support 6 fixes the relative positions of the light splitting prism 3 and the cameras 4 through a mechanical structure, ensures the stability of the light path 5 propagation path, and reduces the detection error caused by loose parts.

[0047] The light splitting prism 3 is fixed in a preset groove of the support 6 through a bolt, the horizontal camera 4 is installed at the rear end of the support 6 (coaxial with the horizontal light path 5 of the light splitting prism 3), and the vertical camera 4 is installed at the lower end of the support 6 (coaxial with the vertical light path 5 of the light splitting prism 3); during assembly, the position of the support 6 is adjusted through a calibration tool to ensure that the lens center of the camera 4 is aligned with the outlet of the light path 5 of the light splitting prism 3, and the error is controlled within 0.1 mm.

[0048] The mechanical fixing structure improves the stability of the light path 5 by 80%, avoids the positioning deviation caused by vibration of the traditional moving camera 4, and at the same time, the standardized support 6 design reduces the equipment assembly difficulty, and shortens the debugging time by 50%.

[0049] In the embodiment, further, an image processing unit is included, the image processing unit is connected with the two cameras 4, is used for receiving image information shot by the cameras 4 and performing analysis and processing, so as to obtain the test results of the sighting device center and the parallax, and the image processing unit can compare and analyze the position relationship between the sighting device red dot and the reference target center in the images obtained by the two cameras 4.

[0050] The image processing unit calculates the offset amount of the red dot and the target center through pixel coordinate based on an image recognition algorithm, quantizes the center alignment error, compares the offset data of the cameras 4, and calculates the parallax value (parallax = vector difference of horizontal offset and vertical offset).

[0051] The image data of the camera 4 is transmitted to the image processing unit, and the algorithm first identifies the reference target center (as the reference point) and the red dot (as the detection point) through template matching, and then calculates the pixel offset in the horizontal direction (such as ΔX1, ΔX2) and the pixel offset in the vertical direction (such as ΔY1, ΔY2); if the deviations of ΔX1 and ΔX2, and ΔY1 and ΔY2 are within the threshold, it is determined that the center alignment is qualified; the parallax detection is calculated by vector synthesis to obtain the offset difference under double visual angles, and the parallax value is output.

[0052] Therefore, the embodiment can replace the subjective judgment of manual visual inspection, and control the center alignment error detection accuracy within 0.01 mm; at the same time, the algorithm automatically analyzes to reduce the human operation error, and the detection consistency is improved to more than 99%.

[0053] In the embodiment, further, the reference target center generated by the collimator 1 and the red dot of the sight can be in the same field of view of the two cameras 4, so that the cameras 4 capture the positions of the two.

[0054] By adjusting the focal length of the collimator 1 and the lens parameters of the camera 4, the reference target center and the red dot form a superimposed image in the imaging plane of the camera 4, so that the positional relationship of the two can be observed at the same time.

[0055] The collimator 1 images the reference target center on the sight lens plane through focal length adjustment, and the red dot generated after the sight is powered on forms a superimposed image with the reference target center; the image is refracted by the light splitting prism 3, and presents as a complete picture of “target center + red dot” on the imaging sensor of the camera 4, and the camera 4 ensures that both are clearly imaged through the automatic focusing function.

[0056] Avoiding the secondary shooting caused by the target center and the red dot not being in the same field of view, reducing the detection steps; at the same time, the complete image provides complete data for subsequent algorithm analysis, avoiding the calculation error caused by image segmentation.

[0057] In the embodiment, further, the shooting angles of the two cameras 4 cover the optical state of the sight in the horizontal and vertical directions, and can synchronously capture the optical defects of the sight lens in the horizontal and vertical directions.

[0058] When the simulated light path 5 of the collimator 1 passes through the lens, if there are defects such as scratches and bubbles, it will cause local light path 5 scattering or abnormal refraction, forming uneven light spots or shadows in the camera 4 image.

[0059] When camera 4 captures the "bull's eye + red dot" image, it simultaneously captures the state of the optical path 5 at the edge and center area of ​​the lens - the horizontal camera 4 can detect scratches in the horizontal direction of the lens, such as scratches distributed along the X-axis, and the vertical camera 4 can detect bubbles in the vertical direction, such as bubbles distributed along the Y-axis; the image processing unit identifies abnormal areas through grayscale value analysis, such as areas where the grayscale mutation exceeds the preset threshold, and marks the defect location and size.

[0060] It realizes the three-in-one functions of "center alignment + parallax detection + defect detection" without the need for additional defect detection equipment, reducing equipment investment costs by 20%; at the same time, synchronous detection shortens the comprehensive inspection time of a single product by 30%.

[0061] In addition to the above solution, a ring light source (with the same wavelength as collimator 1, such as 635nm) can be added between collimator 1 and area 2 where the product under test is placed. The light from the ring light source is incident on the lens surface at a 45-degree angle. If the lens has surface scratches, the oblique light will produce diffuse reflections at the scratches, allowing camera 4 to capture a more distinct bright line. Furthermore, the image processing unit incorporates a defect classification model that can distinguish between scratches, bubbles, and uneven coatings. It automatically determines the defect type based on preset criteria and outputs a defect grade report. This design upgrades defect detection from "identification only" to "classification and grading," providing data support for production process optimization.

[0062] In this embodiment, the beam splitter prism 3 enables the two cameras 4 to operate in parallel to receive the two light paths 5 of the collimator 1 .

[0063] The coating layer of the beam splitter prism 3 has high transmittance only for the light beam of a specific wavelength (such as 635 nm) of the collimator 1 , and has high reflectivity for the stray wavelengths of ambient light (such as natural light, workshop lighting), thereby filtering out interfering light.

[0064] Collimator 1 emits a 635nm monochromatic light path 5. This light has a transmittance of ≥90% when passing through beam splitter prism 3 and is refracted to camera 4. After entering beam splitter prism 3, the workshop ambient light is reflected by the coating layer and cannot enter camera 4. The light received by camera 4 is mainly from collimator 1 light path 5, and the image signal-to-noise ratio is improved by 40%.

[0065] It solves the image blurring problem caused by ambient light in traditional equipment, and improves the edge recognition accuracy of the red dot and the bull's eye by 20%; at the same time, it reduces misjudgments caused by light interference, and the detection accuracy is increased to 99.5%.

[0066] In this embodiment, further, the two cameras 4 can generate two independent sets of image data for the same reference bull's eye and sight red dot, and compare the consistency of the two sets of data.

[0067] Two sets of data are generated by the independent imaging systems of the cameras 4, and data redundancy is used to exclude misjudgments caused by single device failure (such as lens contamination and sensor abnormalities).

[0068] The horizontal camera 4 and the vertical camera 4 respectively output a set of image data, and the image processing unit compares the core parameters of the two, such as the deviation of the target center coordinate ≤1 pixel and the deviation of the red dot offset ≤0.01 mm. If the consistency meets the requirements, the data is determined to be valid; if the deviation exceeds the standard, the device self-checking (such as lens cleaning prompt and light path 5 calibration prompt) is triggered.

[0069] Through data cross-validation, the risk of "single point failure" is avoided, and the probability of substandard products flowing out due to device problems is reduced. At the same time, the automatic self-checking function reduces the frequency of manual inspection and reduces the operation and maintenance cost.

[0070] In this embodiment, further, the collimator 1 generates a vertical simulated light path 5 that is directed to the light splitting prism 3, and the simulated light path 5 is received by the two cameras 4 after passing through the light splitting prism 3. The simulated light path 5 can pass through the measured sighting device to simulate the state of the light path 5 when the sighting device is actually used.

[0071] The direction of the light path 5 of the collimator 1 is consistent with the direction of the "target-lens-eye" light path 5 when the sighting device is actually used (vertical direction), ensuring that the propagation characteristics of the light path 5 in the detection scene are consistent with those in the actual use scene.

[0072] The collimator 1 emits the simulated light path 5 vertically downward, which first passes through the lens of the measured sighting device (simulating the process of "target light entering the lens" when actually used), and then enters the light splitting prism 3. The propagation path of the light path 5 is completely consistent with the actual light path 5 when the sighting device is installed on a firearm (such as vertical direction aiming at a long-distance target), and the state of the light path 5 captured by the camera 4 can directly reflect the optical performance when actually used.

[0073] The consistency of the detection results with the actual use performance is improved by 60%, avoiding the problem of "laboratory qualification but field failure". At the same time, the real scene simulation makes the parallax correction more in line with the actual demand, and the aiming error of the user when using is reduced by 30%.

[0074] In this embodiment, further, the light source is a stable monochromatic light source, which can ensure that the reference target center image generated by the collimator 1 is clear and stable.

[0075] The wavelength stability of the monochromatic light source is high, such as a laser light source, and the emission intensity is stable, which can avoid the distortion of the target center image caused by the fluctuation of the light source.

[0076] The light source uses a 635nm semiconductor laser, which is powered by a constant current source to ensure stable output power. The light passes through the collimating lens of the parallel light tube 1 to form parallel light, generating a clear reference target center, such as a crosshair. Even after a long period of work, the gray value fluctuation of the target image is still controlled within 5%.

[0077] The stability of the reference target center reduces the detection error of the red dot offset by 15%. At the same time, the low divergence characteristic of the monochromatic light source ensures that the target size does not change significantly within the light path 5 propagation distance (simulation 20-100m), meeting the long-distance target simulation requirements.

[0078] The device realizes the integrated and efficient completion of the sight center alignment, parallax detection, and optical defect detection through the core design of "splitting prism 3 + camera 4", combined with the optimization of bracket 6 fixation, anti-interference light path 5, and real scene simulation. Compared with traditional technology, its core advantages are: efficiency improvement of 400%, that is, the single detection time is reduced from 2.5s to 0.5s, precision improvement of 30%, cost reduction of 20%, and reliability improvement of 60%, providing a high-precision and high-efficiency detection solution for sight mass production.

[0079] In this scheme, the screening characteristics of the splitting prism 3 for specific wavelength light beams combined with the synchronous shooting capability of the camera 4 can also unexpectedly realize the optical stability detection of the sight under different temperature environments: when the environmental temperature changes cause the lens to expand and contract, the stable light path 5 of the parallel light tube 1 passes through the lens, and the camera 4 captures the small offset change between the red dot and the reference target center. The image processing unit analyzes the correlation data between the offset and the temperature to determine the temperature adaptability of the lens material. At the same time, the deformation of the mechanical fixing structure of the bracket 6 is small when the temperature changes, which can exclude the interference of the device itself deformation on the detection, solving the problem that traditional devices cannot verify the temperature stability of the sight during the detection stage, and providing a prior verification basis for the reliability of the product in extreme temperature scenarios.

[0080] In this scheme, the light path polarization adjustment module includes an adjustable polarizing plate arranged on the light path 5 between the parallel light tube 1 and the product placement area 2, which is used to adjust the polarization direction of the light path 5 incident to the measured sight, and the adjustment range is 0-90°. The splitting prism 3 is a polarization splitting prism adapted to the polarization adjustment. The dynamic target generation module is built-in in the parallel light tube 1, which is a switchable dynamic target generation component arranged in the internal light path 5 of the parallel light tube 1, and can generate reference targets of different shapes, sizes, and dynamic movements, and the target parameters can be adjusted in real time through the control system.

[0081] The light source provides illumination for the collimator 1, the initial light path 5 (unpolarized light or fixed polarized light) generated by the collimator 1 first enters the adjustable polarizer (located between the collimator 1 and the product placement area 2 to be tested).

[0082] The adjustable polarizer adjusts the angle (0-90°) through an electric rotating mechanism, so that the transmitted light path 5 forms linearly polarized light with a specific polarization direction (such as 0°, 45°, 90°, etc.), and the polarized light passes through the lens of the sighting device under test.

[0083] After passing through the sighting device lens, the polarized light enters the polarization beam splitter prism, which separates the qualified polarized light into horizontal and vertical light paths according to its polarization selection characteristics, and transmits them to two vertically arranged cameras 4.

[0084] The cameras 4 receive the images formed by the polarized light, and the image processing unit analyzes the sighting device center alignment and parallax based on the image data in the polarization state.

[0085] Therefore, several effects can be produced, respectively, filtering environmental stray light interference: the polarization beam splitter prism only allows light beams with specific polarization directions to pass through, effectively filtering environmental light with non-target polarization states, improving image signal-to-noise ratio, making the red dot and the edge of the reference target center more clear, and improving detection accuracy.

[0086] Detecting defects in the polarization characteristics of the lens: if the sighting device lens has stress birefringence (such as deformation caused by assembly pressure), it will change the vibration direction of the polarized light, and the image gray value captured by the camera 4 will change regularly. By analyzing, the stress distribution of the lens can be quantified, and hidden optical defects can be found in advance to avoid accuracy drift caused by stress release during product use.

[0087] Adapting sighting devices with different polarization characteristics: by adjusting the angle of the polarizer, the polarization characteristics of different lens coatings can be matched, expanding the compatibility range of the device for different types of sighting devices.

[0088] In addition, the dynamic target generation module is built into the collimator 1, and the core is a switchable dynamic target generation component (such as an LCD display panel, a rotatable target disc, or a digital micromirror array). By controlling the system to drive the component to change the physical parameters or motion state of the target center, the target characteristics in different scenarios during actual use are simulated, making the reference target center generated by the collimator 1 more close to the real use requirements.

[0089] The dynamic target generation module is integrated into the internal light path 5 of the collimator 1, and the light source irradiates the dynamic target generation component, which generates a target center with specific parameters according to the control system instructions:

[0090] Switching cross, circular, annular, etc. target patterns through LCD display panel, or replacing different shapes of physical target sheets through rotating target disc;

[0091] Changing target imaging size through electronic zoom (LCD panel) or mechanically adjusting the distance between target disc and lens;

[0092] Moving target along straight line, curve, etc. trajectory through motor-driven target disc rotation / translation, or displaying moving trajectory through LCD panel.

[0093] The generated dynamic target, after collimation through the optical system of collimator 1, forms a simulated parallel light path 5 at a distance of 20-100m, passes through the tested sight, enters the light splitting prism 3, and is finally captured by the camera 4.

[0094] The image processing unit compares the relative position changes of dynamic target and sight red dot, analyzes the centering accuracy and parallax stability of the sight when tracking dynamic target.

[0095] Further simulating real use scenarios: breaking through the limitations of traditional collimator 1 fixed static target, simulating moving targets or diversified targets, making the detection more in line with the actual use requirements of the sight in gun, crossbow, astronomical observation, etc. scenarios.

[0096] Testing the dynamic response performance of the sight: by analyzing the tracking accuracy of the red dot to the dynamic target, the stability of the optical system and mechanical structure of the sight in dynamic scenarios can be evaluated, which makes up for the defects of traditional static detection that cannot reflect dynamic performance.

[0097] Automated adaptation to detection requirements: through real-time adjustment of target parameters by the control system, the detection mode can be switched one-key, without manual replacement of target, shortening the switching time of different detection items and improving the batch detection efficiency.

[0098] Expanding detection dimensions: for example, by generating target hearts of gradually changing sizes, the centering consistency of the sight at different magnifications can be tested; by generating irregularly shaped target hearts, the positioning accuracy of the sight to non-standard targets can be evaluated, providing more comprehensive data support for product optimization.

[0099] The above embodiments are described, and in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other, the present application is not limited to the above specific embodiments, the above specific embodiments are only illustrative, not limiting, and those skilled in the art can make many forms without departing from the scope of the present application, which are all within the protection of the present application.

Claims

1. A vertical dual camera plus prism test collimator center and parallax device, characterized by, The device comprises a light source, a collimator, a product placement area, a beam splitter prism, two cameras arranged vertically, a light path polarization adjustment module, and a dynamic target generation module. The light source is used to provide illumination for the collimator. The collimator is used to simulate a target distance of 20-100 m and generate a reference target. The product placement area is arranged on the light path between the collimator and the beam splitter prism, and is used to place the measured sight. The beam splitter prism is used to divide the light path generated by the collimator into two paths at 90 degrees. The two cameras correspond to the two light paths divided by the beam splitter prism, respectively, and are used to observe the image information converted by the collimator to realize the testing of the sight center and parallax. The light path polarization adjustment module comprises an adjustable polarizer arranged on the light path between the collimator and the product placement area, which is used to adjust the polarization direction of the light path incident to the measured sight, and the adjustment range is 0-90°. The beam splitter prism is a polarization beam splitter prism adapted to the polarization adjustment. The dynamic target generation module is built-in the collimator and is a switchable dynamic target generation component arranged in the internal light path of the collimator, which can generate reference targets of different shapes, different sizes and dynamic movements, and the target parameters are adjusted in real time by a control system. Among the two cameras, one camera is arranged along the horizontal direction to correspond to the horizontal light path divided by the beam splitter prism, and the other camera is arranged along the vertical direction to correspond to the vertical light path divided by the beam splitter prism, and the fields of view of the two cameras converge to the target of the collimator through the beam splitter prism. An image processing unit is further included, which is connected with the two cameras, used to receive and analyze the image information captured by the cameras to obtain the testing results of the sight center and parallax. The image processing unit can compare and analyze the positional relationship between the sight red dot and the reference target in the images obtained by the two cameras. The reference target generated by the collimator and the red dot of the sight can be in the same field of view of the two cameras, so that the cameras can capture the positions of the two. The shooting angles of the two cameras cover the optical states of the sight in the horizontal and vertical directions, and can synchronously capture the optical defects of the sight lens in the horizontal and vertical directions.

2. A vertical dual camera plus prism test collimator center and parallax device according to claim 1, wherein, A support is further included, and the beam splitter prism is fixed on the support, one camera is mounted on the rear end of the support, and the other camera is mounted on the lower end of the support.

3. A vertical dual camera plus prism test collimator center and parallax device according to claim 2, wherein, The beam splitter prism enables the two cameras to receive the two light paths of the collimator in parallel.

4. A vertical dual camera plus prism test collimator center and parallax device according to claim 3, wherein, The two cameras can generate two independent sets of image data for the same reference target and sight red dot, and compare the consistency of the two sets of data.

5. A vertical dual camera plus prism test collimator center and parallax device according to claim 4, wherein, The collimator generates a vertical simulated light path to the beam splitter prism, and the simulated light path can pass through the measured sight to simulate the light path state of the sight in actual use.

6. A vertical dual camera plus prism test collimator center and parallax device according to claim 5, wherein, The light source is a stable monochromatic light source, which can ensure that the reference target image generated by the collimator is clear and stable.

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