Three-axis lens test platform

Abstract

The utility model relates to the technical field of optical instruments, in particular to a three-axis lens test platform, which comprises a bearing platform, a test platform, a test platform and a test platform, and is characterized in that the bearing platform comprises a workbench and a support frame, and the support frame is arranged above the workbench and is provided with a detection lens; the first driving mechanism is arranged along the Y axis, the second driving mechanism is arranged along the X axis, the third driving mechanism is arranged along the Z axis, the imaging photoreceptor is arranged on the third driving mechanism in a sliding mode, the first driving mechanism comprises a guide rail and a first sliding table, and the second driving mechanism comprises a guide rail base and a second sliding table. Sliding assemblies for reducing friction and vibration generated when the first sliding table and the second sliding table move are arranged below the first sliding table and the second sliding table correspondingly, each sliding assembly comprises a fixed part and a moving part which repel each other, the two moving parts are fixedly connected to the lower surfaces of the first sliding table and the second sliding table correspondingly, and the two fixed parts are fixed to the workbench and the guide rail base correspondingly. The two moving parts are respectively corresponding to the two moving parts; the imaging photoreceptor corresponds to the detection lens, and the Z-axis direction is the axial direction of the detection lens.

Description

Technical Field

[0001] The utility model relates to the technical field of optical instruments, in particular to a three-axis lens testing platform. Background Art

[0002] In the field of optical testing and image recording, accurate testing and evaluation of lens performance is a key link to ensure imaging quality and improve equipment stability. With the advancement of science and technology, especially the rapid development of photography, filmmaking, security monitoring and drone technology, the requirements for lens testing platforms are increasing. Traditional lens testing platforms are often limited to single-dimensional adjustment and cannot meet the high-precision, multi-degree-of-freedom adjustment requirements in complex test scenarios.

[0003] Currently, the calibration and focusing of the lens is achieved through a three-axis platform. During the test, even slight vibrations in the external environment may affect the test results. During the process of adjusting the focal length, the friction and jitter generated will also affect the test.

[0004] Therefore, the present application has developed a three-axis lens testing platform to solve the problems existing in the prior art. Utility Model Content

[0005] The utility model aims to provide a three-axis lens testing platform to solve the problem that the friction and shaking generated in the process of calibrating focus in the prior art affect the test results.

[0006] The technical solution of the utility model is: a three-axis lens testing platform, comprising:

[0007] A carrying platform, the carrying platform comprises a workbench and a support frame, the support frame is arranged above the workbench, and a detection lens is arranged on the support frame;

[0008] A driving mechanism 1 is arranged along the Y axis, a driving mechanism 2 is arranged along the X axis, a driving mechanism 3 is arranged along the Z axis, and an imaging photoreceptor is slidably arranged on the driving mechanism 3, the driving mechanism 1 includes a guide rail and a slide 1, the driving mechanism 2 includes a guide rail seat and a slide 2, and a sliding component is provided below the slide 1 and the slide 2 to reduce the friction and vibration generated by the slide 1 and the slide 2 when moving, and the sliding component includes a repelling fixed part and a moving part, the two moving parts are respectively fixedly connected to the lower surfaces of the corresponding slide 1 and the slide 2, the two fixed parts are respectively fixed on the workbench and the guide rail seat, and respectively correspond to the two moving parts; the imaging photoreceptor corresponds to the detection lens, wherein the Z-axis direction is the axial direction of the detection lens.

[0009] Preferably, the fixing part comprises a fixing plate, a magnetic block and a suspension plate; the fixing plate is fixed to the workbench, the upper surface of the fixing plate is evenly arrayed with magnetic blocks, and the suspension plate cover is arranged on a rectangle formed by a plurality of the magnetic blocks.

[0010] Preferably, the length of the suspension plate is greater than the distance between the two farthest magnetic blocks.

[0011] Preferably, the driving mechanism one, the driving mechanism two and the driving mechanism three are stacked in sequence on the workbench, the guide rail seat is fixed on the slide one, and the driving mechanism three is fixed on the slide two.

[0012] Preferably, the moving distance of the imaging photosensor on the driving mechanism three is greater than the focusing distance of the detection lens.

[0013] Preferably, limit blocks are respectively provided at both ends of the driving mechanism 1 and the driving mechanism 2, and the height of the limit blocks is the same as the height of the slide 1 and the slide 2.

[0014] Preferably, two photoelectric imaging photoreceptors are provided on one side of the driving mechanism 1 and the driving mechanism 2, and two sensing plates are provided on the slide 1 and the slide 2 on the same side as the photoelectric imaging photoreceptors. When the corresponding two sensing plates pass through the corresponding photoelectric imaging photoreceptors, the slide 1 and the slide 2 respectively contact the corresponding limit blocks.

[0015] Compared with the prior art, the advantages of the utility model are:

[0016] (1) The repelling fixed part and the moving part make the slide table 1 and the slide table 2 in a suspended state, thereby reducing vibration, friction and noise during movement and improving the accuracy and stability of calibration and focusing;

[0017] (2) Driving mechanism 1, driving mechanism 2 and driving mechanism 3 are stacked to form a more stable support structure, and can reduce motion errors and vibrations by working together, thereby reducing the impact of vibrations on test results;

[0018] (3) The three-axis test platform has high precision and excellent anti-shake performance, which can reduce the focusing error caused by shake. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0020] Figure 1 This is a structural schematic diagram of a three-axis lens testing platform described in the utility model;

[0021] Figure 2 It is a structural schematic diagram of the fixing part in the sliding assembly of the utility model;

[0022] Figure 3 It is a schematic diagram of the structure of the assembly of the driving mechanism 1, the driving mechanism 2 and the driving mechanism 3 of the utility model;

[0023] Figure 4 This is a front view of a three-axis lens testing platform described in the utility model;

[0024] Figure 5 for Figure 4 A magnified structural diagram of the middle part;

[0025] Figure 6 It is a side view of the three-axis lens test platform when one of the sensing sheets of the utility model is located at the corresponding photoelectric imaging photoreceptor;

[0026] Figure 7 for Figure 6 The enlarged structure of B in the middle;

[0027] Figure 8 It is a side view of the three-axis lens test platform when another sensing sheet of the utility model is located at the corresponding photoelectric imaging photoreceptor;

[0028] Fig. 9 This is a top view of the driving mechanism 1, the driving mechanism 2 and the driving mechanism 3 of the utility model located on a workbench.

[0029] Among them: 1. Carrying platform; 11. Workbench; 12. Support frame; 2. Driving mechanism 1; 21. Guide rail; 22. Slide 1; 3. Driving mechanism 2; 31. Guide rail seat; 32. Slide 2; 4. Driving mechanism 3; 5. Imaging photoreceptor; 6. Sliding assembly; 61. Fixed part; 611. Fixed plate; 612. Magnetic block; 613. Suspension plate; 62. Moving part; 7. Limit block; 8. Photoelectric imaging photoreceptor; 9. Sensor sheet; 10. Detection lens. DETAILED DESCRIPTION

[0030] The following is a further detailed description of the present invention in conjunction with specific embodiments:

[0031] like Figure 1-Figure 3As shown, a three-axis lens test platform includes a carrier 1, a drive mechanism 1 2, a drive mechanism 2 3, a drive mechanism 3 4, and an imaging photoreceptor 5; the carrier 1 includes a workbench 11 and a support frame 12, the workbench 11 provides support, a detection lens 10 is arranged on the support frame 12, the drive mechanism 1 2, the drive mechanism 2 3 and the drive mechanism 3 4 are respectively arranged along the Y-axis, X-axis and Z-axis directions, wherein the axial direction of the detection lens 10 is consistent with the direction of the Z-axis, and the drive mechanism 1 2, the drive mechanism 2 3 and the drive mechanism 3 4 are sequentially stacked on the workbench 11, and the imaging photoreceptor 5 is slidably arranged on the drive mechanism 3 4, and the imaging photoreceptor 5 is made to correspond to the detection lens 10 by adjusting the drive mechanism 1 2, the drive mechanism 2 3 and the drive mechanism 3 4, and the focus is calibrated so that the lens can be tested during the test. The position can be flexibly adjusted during the process so as to find the focal plane more accurately. The X, Y, and Z three-axis test platform has high stability, can effectively isolate external interference, ensure the accuracy of the test, and has good anti-shake performance. Therefore, when the lens is tested to find the focal plane, the focus error caused by platform shaking can be significantly reduced; and the stacked setting of the three driving mechanisms can achieve more complex motion trajectories and more flexible motion control. By coordinating the movements of various mechanisms to reduce motion errors and vibrations, the imaging photoreceptor 5 can be accurately positioned and moved, which can not only improve the efficiency of calibrating the focus of the detection lens 10, but also improve the accuracy of the calibrated focus. At the same time, the stacked setting of the three driving mechanisms can improve stability and compactness, reduce vibration or jitter generated during movement, and improve the accuracy of the test.

[0032] In this embodiment, the driving mechanism 1 2 includes a guide rail 21 and a slide 1 22, the driving mechanism includes a guide rail seat 31 and a slide 2 32, and a sliding assembly 6 is provided below the slide 1 22 and the slide 2 32. The sliding assembly 6 includes a fixed portion 61 and a moving portion 62. The two fixed portions 61 are respectively fixed on the workbench 11 and the guide rail seat 31, and the two moving portions 62 are respectively fixed on the slide 1 22 and the slide 2 32. When the slide 1 22 and the slide 2 32 move on the corresponding guide rail 21 and the guide rail seat 31, the moving portion 62 also moves accordingly. The moving part 62 and the fixed part 61 repel each other, so the slide 1 22 and the slide 2 32 are forced upward, reducing the contact with the corresponding guide rail 21 and the guide rail seat 31. During the sliding process and when stopping, the impact of vibration or noise caused by movement on the detection can be reduced, so that the lens can maintain a more stable state during the calibration and focus process, reducing the focus error caused by jitter, reducing the friction and vibration caused by mechanical contact, significantly improving the overall stability, and being able to adjust the position more finely to meet the high-precision calibration and focus requirements.

[0033] Furthermore, if Figure 2As shown, the fixed part 61 includes a fixed plate 611, a magnetic block 612 and a suspension plate 613. The fixed plate 611 is fixed on the workbench 11, and the magnetic blocks 612 are evenly distributed on the fixed plate 611. If the magnetic block 612 is fixed on the fixed plate 611 as a whole, the generated magnetic field will be distorted at the edge or a specific area, resulting in uneven distribution of the magnetic field, thereby causing the corresponding slide 1 22 or slide 2 32 to shake during movement, affecting the detection result. The magnetic blocks 612 are evenly distributed on the fixed plate 611, which can make the magnetic field more uniform in all directions, reduce the phenomenon of excessive or weak local magnetic fields, and make the slide more stable when moving. By adjusting the distribution density and arrangement of the magnetic blocks 612 on the fixed plate 611, the specific requirements of different application scenarios for magnetic field strength and distribution can be flexibly met.

[0034] In order to further improve the stability of slider 1 and slider 2 during the sliding process, the suspension plate 613 is covered on top of the magnetic block 612 and completely covers the multiple magnetic blocks 612. The suspension plate 613, as a part of the magnetic field regulation, further refines the distribution of the magnetic field by adjusting the distance or position between it and the magnetic block 612, thereby achieving more precise suspension control, providing a more stable magnetic field, reducing vibration and noise, and improving the overall stability of the system.

[0035] The length of the suspension plate 613 is greater than the distance between the two farthest magnetic blocks 612, so that the suspension plate 613 can completely cover all the magnetic blocks 612, and will not cause some edge magnetic blocks 612 outside the suspension plate 613, thereby causing inconsistent magnetic fields and deviations in the suspension force provided to slider one or slider two, causing unnecessary jitter or vibration of slider one or slider two during movement, resulting in large errors in the detection results.

[0036] Furthermore, if Figure 4-Figure 8 As shown, the moving distance of the imaging photoreceptor 5 on the driving mechanism 3 4 is greater than the focusing distance of the detection lens 10, so as to prevent the focusing failure or inaccurate focusing due to the limitation of the moving distance when adjusting the distance of the imaging photoreceptor 5.

[0037] like Figure 4-Figure 9As shown, in order to avoid exceeding the safety range during movement, limit blocks 7 are provided at both ends of driving mechanism 1 2 and driving mechanism 2 3. The height of limit blocks 7 is the same as the height of slide 1 22 and slide 2 32. By limiting the movement range of the driving mechanism, vibration and impact caused by excessive movement are reduced. At the same time, two photoelectric imaging photoreceptors 8 are provided on one side of driving mechanism 1 2 and driving mechanism 2 3, and two sensing sheets 9 are provided on the same side ends of slide 1 22 and slide 2 32. When the corresponding sensing sheet 9 passes through the photoelectric imaging photoreceptor 8, the corresponding driving mechanism stops moving. At this time, slide 1 22 and slide 2 32 are in contact with the limit blocks 7. Through the cooperation of the limit blocks 7 and the photoelectric imaging photoreceptors 8, not only collision can be prevented, but also instability caused by rapid stopping of the driving mechanism can be prevented.

[0038] The implementation principle of this embodiment:

[0039] When calibrating and focusing the detection lens 10, the detection lens 10 is placed on the support frame 12, and the driving mechanism 1 2, the driving mechanism 2 3 and the driving mechanism 3 4 are controlled to move in three directions, and the position is continuously adjusted so that the imaging photoreceptor 5 corresponds to the position of the detection lens 10. When adjusting the position, the two moving parts 62 slide on the guide rail 21 and the guide rail seat 31 respectively with the slide 1 22 and the slide 2 32, and the magnetic blocks 612 evenly distributed on the fixed plate 611 generate a magnetic field, and the magnetic field is made more stable through the suspension plate 613. The moving part 62 causes the slide 1 22 and the slide 2 32 to generate a force away from the corresponding guide rail 21 and the guide rail seat 31, so that the slide 1 22 and the slide 2 32 have less resistance when sliding, reduce friction and noise, and reduce the possibility of vibration and jitter. In addition, when the sensor sheet 9 moves to the corresponding photoelectric imaging photoreceptor 8, the driving mechanism stops moving, and the limit block 7 also limits the moving position of the driving mechanism to reduce collision.

[0040] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, so it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model.

Claims

1. A three-axis lens testing platform, characterized in that: include: A carrying platform (1), the carrying platform (1) comprising a workbench (11) and a support frame (12), the support frame (12) being arranged above the workbench (11), and a detection lens (10) being arranged on the support frame (12); A driving mechanism (2) arranged along the Y axis, a driving mechanism (3) arranged along the X axis, a driving mechanism (4) arranged along the Z axis, and an imaging photoreceptor (5) slidably arranged on the driving mechanism (4), wherein the driving mechanism (2) comprises a guide rail (21) and a slide table (22), the driving mechanism (3) comprises a guide rail seat (31) and a slide table (32), and the slide table (22) and the slide table (32) are both provided below with a friction reducing mechanism (21) and a vibration reducing mechanism (32) generated when the slide table (22) and the slide table (32) move. The sliding assembly (6) comprises a fixed portion (61) and a moving portion (62) that repel each other, the two moving portions (62) being respectively fixedly connected to the lower surfaces of the corresponding slide table 1 (22) and the slide table 2 (32), the two fixed portions (61) being respectively fixed to the workbench (11) and the guide rail seat (31), and respectively corresponding to the two moving portions (62); the imaging photoreceptor (5) corresponds to the detection lens (10), wherein the Z-axis direction is the axial direction of the detection lens (10).

2. A three-axis lens testing platform according to claim 1, characterized in that: The fixing portion (61) comprises a fixing plate (611), a magnetic block (612), and a suspension plate (613); the fixing plate (611) is fixed on the workbench (11), the upper surface of the fixing plate (611) is provided with magnetic blocks (612) in a uniform array, and the suspension plate (613) is covered on a rectangle formed by a plurality of the magnetic blocks (612).

3. A three-axis lens testing platform according to claim 2, characterized in that: The length of the suspension plate (613) is greater than the distance between the two farthest magnetic blocks (612).

4. The three-axis lens testing platform according to claim 1, characterized in that: The driving mechanism one (2), the driving mechanism two (3) and the driving mechanism three (4) are stacked in sequence on the workbench (11), the guide rail seat (31) is fixed on the slide one (22), and the driving mechanism three (4) is fixed on the slide two (32).

5. The three-axis lens testing platform according to claim 1, characterized in that: The moving distance of the imaging photoreceptor (5) on the driving mechanism three (4) is greater than the focusing distance of the detection lens (10).

6. The three-axis lens testing platform according to claim 1, characterized in that: Limit blocks (7) are respectively provided at both ends of the driving mechanism 1 (2) and the driving mechanism 2 (3), and the height of the limit blocks (7) is the same as the height of the slide 1 (22) and the slide 2 (32).

7. The three-axis lens testing platform according to claim 6, characterized in that: Two photoelectric imaging photoreceptors (8) are provided on one side of each of the driving mechanism 1 (2) and the driving mechanism 2 (3); two sensing sheets (9) are provided on the slide 1 (22) and the slide 2 (32) on the same side as the photoelectric imaging photoreceptors (8); when the corresponding two sensing sheets (9) pass through the corresponding photoelectric imaging photoreceptors (8), the slide 1 (22) and the slide 2 (32) respectively contact the corresponding limit blocks (7).

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