Calibration device for a sighting device

Abstract

The utility model discloses a kind of calibration devices of sighting equipment, including main body structure, tool structure and pedestal;The main body structure and tool structure are arranged on pedestal;The main body structure is composed of collimator and light source structure;The light source structure is arranged between collimator and tool structure;Collimating light pipe, scale plate, camera, collimating fine adjustment structure are arranged inside collimator;The collimating light pipe is fixed in collimator inside by fine adjustment support;The camera is set on collimating fine adjustment structure, and the camera is set in collimating light pipe tail end;Collimating fine adjustment structure, fine adjustment support can move up and down and left and right;The scale plate is fixed in the focal plane position of camera by mechanical pressure ring;The tool structure includes sleeve, support, locking structure;The locking structure fixes sleeve on support;Collimating light pipe, light source structure, sleeve coaxial center.The utility model improves calibration precision, with the advantages of compatibility and low cost.

Description

Technical Field

[0001] This utility model belongs to the technical field of calibration devices, specifically relating to a calibration device for aiming equipment. Background Technology

[0002] As a precision positioning optical aiming component, aiming equipment often requires a dedicated calibration device for calibration, verification, parameter adjustment, and troubleshooting. During operation, the crosshairs or center mark on the target plate pass sequentially through optical components such as a condenser lens, a reflector, and a lens that deflects the optical path before finally reaching the eyepiece. The testing personnel observe the alignment of the central crosshair of the ring plate with the crosshairs or center mark of the target plate through the eyepiece to determine whether the equipment needs further calibration or verification.

[0003] In practical applications, optical equipment to be calibrated often operates in harsh field environments, some of which are quite challenging. After repeated use, the equipment's optomechanical structure is prone to slight deformations or displacements, leading to relative positional shifts in the optical components. This, in turn, reduces the coaxiality of the aiming axis and mechanical axis, affecting detection accuracy and result reliability. Therefore, to ensure the stable performance of the equipment, it is necessary to perform regular calibration using a specialized calibration device.

[0004] In existing technologies, inspectors need to observe through eyepieces. This process is affected by factors such as visual fatigue and differences in viewing angles, and it is impossible to quantify and measure minute offsets, making it difficult to provide accurate offset data and failing to meet the needs of high-precision scenarios.

[0005] Furthermore, traditional calibration devices have poor compatibility. When the model of the equipment to be calibrated changes, the tooling structure needs to be redesigned, which not only increases the equipment procurement cost but also extends the calibration preparation cycle.

[0006] Therefore, developing a calibration device that combines objective quantitative measurement with compatibility is key to solving the pain points of existing technologies. Utility Model Content

[0007] This utility model addresses the above-mentioned problems and overcomes the shortcomings of the prior art by providing a calibration device for aiming equipment, comprising a main structure, a tooling structure, and a base; the main structure and the tooling structure are disposed on the base; The main structure consists of a collimator and a light source structure; the light source structure is located between the collimator and the tooling structure. The collimator is internally equipped with a collimator, a reticle, a camera, and a collimation fine-tuning structure; the collimator is fixed inside the collimator by a fine-tuning bracket; the camera is mounted on the collimation fine-tuning structure and is located at the tail end of the collimator; the collimation fine-tuning structure and the fine-tuning bracket can move up, down, left, and right. The reticle is fixed to the focal plane of the camera by a mechanical pressure ring; The tooling structure includes a sleeve, a bracket, and a locking structure; the locking structure fixes the sleeve to the bracket. The collimating tube, the light source structure, and the sleeve are coaxial.

[0008] Preferably, the light source structure is an LED lighting system, and the output brightness of the LED lighting system can be adjusted.

[0009] Preferably, the light source structure is a ring-shaped lighting source structure. The advantage of a ring shape is that the illumination is uniform.

[0010] Preferably, the camera is a CCD camera.

[0011] Preferably, the bracket has a V-groove structure.

[0012] Preferably, the collimator is an externally focused collimator.

[0013] The beneficial effects of this utility model are: This device acquires images of the reticle via a camera, avoiding subjective biases from manual visual observation and making measurement results more objective and repeatable. The collimator uses an external focusing structure, allowing precise adjustment of the parallel light output accuracy. The collimator is fixed by a fine-tuning bracket; this collimation fine-tuning structure allows for vertical, horizontal, and forward / backward movement of the camera, ensuring accurate imaging of the reticle on the camera's focal plane and significantly improving measurement accuracy. The ring-shaped illumination source provides a uniform light source, avoiding the uneven illumination problems caused by traditional point or line light sources, reducing image background interference, and ensuring clear, unblurred reticle edges.

[0014] The sleeve can be customized according to the external dimensions of the equipment to be calibrated. The bracket adopts a V-groove structure and a locking structure, which can not only firmly fix aiming equipment of different diameters or shapes, but also avoid excessive clamping force that may cause equipment deformation. It is compatible with the calibration needs of multiple equipment models and reduces the procurement cost of special tooling. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a calibration device for an aiming equipment according to this utility model.

[0016] Figure 2 This is a schematic diagram of the structure of a calibration device for an aiming equipment according to this utility model.

[0017] Figure 3 This is a schematic diagram of the structure of a calibration device for an aiming equipment according to this utility model.

[0018] Figure 4 This is a schematic diagram of the structure of a calibration device for an aiming equipment according to this utility model.

[0019] In the diagram, the markings are as follows: 1 is the collimator, 2 is the collimation fine-tuning structure, 3 is the camera, 4 is the reticle, 5 is the collimator, 6 is the fine-tuning bracket, 7 is the device to be calibrated, 8 is the ring illumination source structure, 9 is the sleeve, 10 is the locking structure, 11 is the bracket, 12 is the base; 1101 is the bottom block; 1102 is the fixing structure; and 1103 is the groove. Detailed Implementation

[0020] To make the technical problems solved, the technical solutions, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] Combination Figure 1 As shown, a calibration device for an aiming device includes a main structure, a tooling structure, and a base 12; the main structure and the tooling structure are mounted on the base 12. The main structure consists of a collimator 1 and a light source structure; the light source structure is located between the collimator 1 and the tooling structure. The collimator 1 contains a collimator 5, a reticle 4, a camera 3, and a collimation fine-tuning structure 2. The collimator 5 is fixed inside the collimator 1 by a fine-tuning bracket 6. The camera 3 is mounted on the collimation fine-tuning structure 2 and is located at the tail end of the collimator 5. The collimation fine-tuning structure 2 and the fine-tuning bracket 6 can move up, down, left, and right. The camera 3 is an image acquisition component. The collimation fine-tuning structure 2 can move the camera 3 back and forth along the optical axis. By changing the relative distance between the camera 3 and the collimator 5 and the reticle 4, the pattern of the reticle 4 of the device to be calibrated 7 can be clearly imaged on the photosensitive element of the camera 3, ensuring the accuracy of subsequent image acquisition and data calculation.

[0022] The reticle 4 is fixed to the focal plane of the camera 3 by a mechanical pressure ring; this ensures that the pattern of the reticle 4 can be accurately projected onto the camera's photosensitive element in the optical imaging path, guaranteeing image clarity and positional accuracy.

[0023] The tooling structure includes a sleeve 9, a bracket 11, and a locking structure 10; the locking structure 10 fixes the sleeve 9 onto the bracket 11. Preferably, the bracket 11 has a V-groove structure. 1101 is the base block; 1102 is the fixing structure; 1103 is the groove.

[0024] like Figures 2-4 As shown, the V-groove structure includes a base block 1101 and a fixing structure 1102. The fixing structure 1102 is located on the upper part of the base block 1101, and the fixing structure 1102 and the base block 1101 are integrally formed. A groove 1103 is provided in the middle part of the fixing structure 1102, and the shape of the groove 1103 is approximately V-shaped.

[0025] The base block 1101 is the overall foundational load-bearing component, providing a stable installation reference and ensuring that the equipment will not shift or shake during operation. The fixing structure 1102 serves to position the sleeve 9.

[0026] Collimating tube 5, light source structure, and sleeve 9 are coaxial.

[0027] Furthermore, the light source structure is an LED lighting system, and the output brightness of the LED lighting system can be adjusted. The LED lighting system can be adapted to the optical characteristics of different devices to be calibrated 7, ensuring that a clear target image is obtained during detection.

[0028] The light source structure is a ring-shaped lighting source structure 8. The advantage of the ring shape is that the lighting is uniform.

[0029] Furthermore, camera 3 is a CCD camera.

[0030] Furthermore, it also includes a computer connected to camera 3, and the images from camera 3 and reticle 4 can be displayed on the computer.

[0031] The computer can display the reticle images captured by the camera in real time, and also supports data storage, report generation, and comparison with historical data.

[0032] More preferably, the computer can automatically identify the center coordinates of the reticle, calculate the positional deviation at different angles, fit the measurement circle, and output the coaxiality value between the mechanical axis and the optical axis.

[0033] The assembly of this utility model is as follows: 1. Main structure assembly: The collimator 1 uses a high-precision optical lens group to ensure the accuracy of parallel light output; the LED lighting system uses an adjustable power LED light source to uniformly illuminate the reticle 4 of the device to be calibrated 7; the collimator 1 and the LED lighting system are fixed to ensure that their optical axes are parallel and their relative positions can be calibrated by fine-tuning screws.

[0034] 2. Assembly of the tooling structure: Place the sleeve 9 (machined according to the external dimensions of the corresponding device 7 to be calibrated) on the bracket 11, and temporarily fix the sleeve 9 with the locking structure 10 for later use. The locking structure 10 adopts a manual knob-type clamping structure, which contacts the sleeve 9 through a rubber pressure block, so as to achieve reliable locking and prevent the sleeve 9 from deforming.

[0035] In this utility model, parameters such as the collimation accuracy of the collimator 1 and the resolution of the camera 3 need to be matched and selected according to the device 7 to be calibrated. Specific parameters can be referred to the technical specifications of the corresponding model device. These are existing technologies and are not the innovations of this utility model.

[0036] The operation process of this utility model is as follows: 1. Fixing the device to be calibrated 7: Insert the device to be calibrated 7 into the sleeve 9, and the two are locked together by the outer rubber pressure block. Place the sleeve 9 on the bracket 11, and turn the knob of the locking structure 10 to press the rubber pressure block into the sleeve 9. Ensure that the lens of the device to be calibrated 7 faces the collimator 1 and that the device to be calibrated 7 is stable and does not shake.

[0037] 2. Start the lighting: Turn on the power of the LED lighting system, adjust the brightness of the light using the brightness adjustment knob, and observe the reticle 4 initially to ensure that the pattern on the reticle 4 is visible; acquire images using the camera 3, observe them on the computer interface, and adjust the exposure parameters of the camera 3 so that the background of the acquired image is pure white and the target of the reticle 4 is pure black, thereby improving the image contrast.

[0038] 3. Focus adjustment: Observe the image displayed on the camera 3 by the reticle 4. If the pattern on the reticle 4 is blurry, rotate the collimation fine adjustment structure 2 of the main structure to move the camera 3 back and forth until the lines of the reticle 4 are clear and the edges are not blurred.

[0039] 4. Data Acquisition: Record the center position data of the reticle 4 of the device to be calibrated 7; then, rotate the device to be calibrated 7 and stop rotating at 0°, 90°, 180°, 270° and 360° respectively. After each stop, click the camera 3 to collect data and complete the data recording of five angle positions.

[0040] 5. Result Output: Calculate and fit the measurement circle based on the data collected from the five angular positions, and determine the radius of the circle and the coaxiality of the corresponding mechanical axis and optical axis for verification.

[0041] It is understood that the above specific description of this utility model is only used to illustrate this utility model and is not limited to the technical solutions described in the embodiments of this utility model. Those skilled in the art should understand that modifications or equivalent substitutions can still be made to this utility model to achieve the same technical effect; as long as the use needs are met, they are all within the protection scope of this utility model.

Claims

1. A calibration device for an aiming device, characterized in that, It includes a main structure, a tooling structure, and a base (12); the main structure and the tooling structure are mounted on the base (12); The main structure consists of a collimator (1) and a light source structure; the light source structure is located between the collimator (1) and the tooling structure. The collimator (1) is equipped with a collimator (5), a reticle (4), a camera (3), and a collimation fine-tuning structure (2); the collimator (5) is fixed inside the collimator (1) by a fine-tuning bracket (6); the camera (3) is mounted on the collimation fine-tuning structure (2) and is located at the tail end of the collimator (5); the collimation fine-tuning structure (2) and the fine-tuning bracket (6) can move up, down, left, and right. The reticle (4) is fixed to the focal plane of the camera (3) by a mechanical pressure ring; The tooling structure includes a sleeve (9), a bracket (11), and a locking structure (10); the locking structure (10) fixes the sleeve (9) to the bracket (11); The collimating tube (5), the light source structure, and the sleeve (9) are coaxial.

2. The calibration device for an aiming device according to claim 1, characterized in that, The light source structure is an LED lighting system.

3. The calibration device for an aiming device according to claim 1, characterized in that, The light source structure is a ring-shaped lighting light source structure (8).

4. The calibration device for an aiming device according to claim 1, characterized in that, The camera (3) is a CCD camera.

5. The calibration device for an aiming device according to claim 1, characterized in that, The bracket (11) has a V-groove structure.

6. The calibration device for an aiming device according to claim 1, characterized in that, The collimator (1) is an externally focused collimator.

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