Multi-station anti-vibration testing mechanism

Abstract

The utility model relates to the multi -station anti -shake test mechanism of field of anti -shake test, including single -shaft test stand and drive base, single -shaft test stand installs in the upper end of drive base, drive base drives test platform to carry out displacement, the upper end of single -shaft test stand is provided with two or more test mould core, the surface of test mould core is provided with the cell -phone containing groove for placing the product of being measured, drive base constitutes by bottom plate, servo motor and angular position platform, servo motor and angular position platform install with the upper end of bottom plate, the adjusting shaft of angular position platform carries out transmission connection with the rotating shaft of servo motor, single -shaft test stand fixed mounting is in the movable end of angular position platform, can fix and test two or more cell -phones simultaneously, has remarkably shortened the total time required for batch testing, has improved production and research and development efficiency greatly.

Description

Technical Field

[0001] This utility model relates to the field of image stabilization testing, and in particular to a multi-station image stabilization testing mechanism. Background Technology

[0002] With the rapid development of smartphone photography capabilities, optical image stabilization (OIS) and electronic image stabilization (EIS) technologies have become standard features in high-end and even mid-range smartphones. These stabilization technologies effectively counteract hand-held camera shake by precisely controlling the lens assembly or image sensor to make minute displacements or angle adjustments, significantly improving image clarity and stability in low-light, telephoto, or motion-based scenarios. Therefore, the image stabilization performance of smartphone camera components has become a key indicator of their quality and user experience, requiring rigorous and efficient testing and verification in research and development, production, and quality control.

[0003] Currently, testing the image stabilization function of mobile phone cameras typically requires fixing the phone on a dedicated testing mechanism. This mechanism simulates shaking in various directions and amplitudes, while using high-precision sensors or image analysis methods to measure and evaluate the phone's image stabilization response.

[0004] Current mainstream single-station testing facilities can only fixate on and test one mobile phone at a time. This testing mode reveals its efficiency bottleneck when facing increasing production capacity demands and R&D testing volume. Frequently changing the phone under test not only increases the labor intensity of operators, but also significantly reduces the overall test throughput, prolongs the production cycle and R&D verification time, and cannot meet the high testing efficiency requirements of large-scale mass production environments. Summary of the Invention

[0005] To overcome the shortcomings of existing technical solutions, this utility model provides a multi-station anti-shake testing mechanism, which can effectively solve the technical problem that only one mobile phone can be tested at a time.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A multi-station image stabilization testing mechanism includes a single-axis test frame and a drive base. The single-axis test frame is installed on the upper end of the drive base, and the drive base drives the test platform to move. The upper end of the single-axis test frame is provided with two or more test molds, and the surface of the test molds is provided with mobile phone receiving slots for placing the product under test.

[0008] The drive base consists of a base plate, a servo motor, and a corner stage. The servo motor and the corner stage are mounted on the upper end of the base plate. The adjustment shaft of the corner stage is connected to the rotation shaft of the servo motor. The single-axis test frame is fixedly mounted on the movable end of the corner stage.

[0009] Furthermore, the test mold core is connected to the test platform by bolts, and a lens positioning groove is provided on the bottom surface of the mobile phone receiving slot.

[0010] Furthermore, the rotation axis of the corner stage passes through the lens positioning groove.

[0011] Furthermore, a support rod is connected between the servo motor and the fixed end of the corner stage.

[0012] Furthermore, the single-axis test frame includes a bearing platform, a support frame, and a pad. The test mold core is installed at the upper end of the bearing platform, the support frame is installed at the bottom end of the bearing platform, and the support frame is installed to the movable end of the corner stage.

[0013] Furthermore, the servo motor and the adjustment shaft of the angular positioning stage are connected by a coupling for transmission.

[0014] Compared with existing technologies, the advantages of this invention are: by setting two or more test molds at the upper end of the single-axis test frame, two or more mobile phones can be fixed and tested simultaneously, significantly shortening the total time required for batch testing and greatly improving production and R&D efficiency. When multiple test molds are integrated and installed on the same single-axis test frame, and driven by servo motors and precisely adjusted by an angle stage, all test molds and the mobile phones under test can achieve completely synchronized movement, ensuring that all mobile phones under test are tested under identical vibration or motion conditions, resulting in highly comparable and consistent test results. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the structure of this utility model;

[0017] Figure 3 This is a three-dimensional schematic diagram of the single-axis test fixture of this utility model;

[0018] Figure 4 This is a three-dimensional schematic diagram of the drive base in this utility model;

[0019] Figure 5 These are three imaging scenarios recorded during the operation of this utility model;

[0020] Figure 6 This is the image analysis formula of this utility model;

[0021] The diagram is labeled as follows: 1-single-axis test frame, 101-bearing platform, 102-support frame, 103-pad;

[0022] 2-Drive base, 201-Base plate, 202-Servo motor, 203-Corner platform, 204-Support rod, 205-Coupling;

[0023] 3-Test mold core, 301-Mobile phone receiving slot, 302-Lens positioning slot. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] The following is combined with Figures 1-6 The multi-station anti-shake testing mechanism of this utility model is described in detail below:

[0026] like Figure 1 and Figure 2 As shown, the multi-station image stabilization testing mechanism includes a single-axis test frame 1 and a drive base 2. The single-axis test frame 1 is installed on the upper end of the drive base 2. The drive base 2 drives the test platform to move. The upper end of the single-axis test frame 1 is provided with two or more test mold cores 3. The surface of the test mold core 3 is provided with a mobile phone receiving slot 301 for placing the product under test.

[0027] like Figure 4 As shown, the drive base 2 consists of a base plate 201, a servo motor 202 and a corner stage 203. The servo motor 202 and the corner stage 203 are installed on the upper end of the base plate 201. The adjustment shaft of the corner stage 203 is connected to the rotation shaft of the servo motor 202 for transmission. The single-axis test frame 1 is fixedly installed on the movable end of the corner stage 203.

[0028] like Figure 3 As shown, by setting three test molds 3 at the upper end of the single-axis test frame 1, each test mold 3 has a mobile phone receiving slot 301 on its surface for placing the product under test, the mechanism can simultaneously fix and test three mobile phones. This solves the efficiency bottleneck of existing technologies that can only test one mobile phone at a time. The test throughput can increase proportionally with the number of molds, significantly shortening the total time required for batch testing and greatly improving production and R&D efficiency. Multiple test molds 3 are integrated and installed on the same single-axis test frame 1, which is fixedly installed on the movable end of the corner stage 203. Driven by the servo motor 202 and precisely displaced or angled by the corner stage 203, all test molds 3 and the mobile phones under test on them can achieve completely synchronized movement. This avoids the complexity and increased cost of configuring a separate drive mechanism for each station, while ensuring that all mobile phones under test are tested under exactly the same vibration or motion conditions, resulting in highly comparable and consistent test results.

[0029] The test mold core 3 is connected to the test platform by bolts. The bolt connection method facilitates quick disassembly and replacement of the test mold core 3, adapting to the testing needs of different mobile phone models. The bottom surface of the mobile phone receiving slot 301 is provided with a lens positioning slot 302. The lens positioning slot 302 can accurately constrain the optical center position of the camera of the mobile phone under test, ensuring that the lens nodes of all mobile phones under test maintain a fixed spatial relationship with the axis of motion, avoiding test errors caused by positioning deviations, and significantly improving the accuracy and repeatability of test data.

[0030] The rotation axis of the corner stage 203 passes through the lens positioning groove 302, which is crucial for simulating real handheld shaking, especially rotational shaking. This makes the applied disturbance more consistent with actual working conditions, greatly improving the realism of the image stabilization performance test and the reliability of the evaluation results. Simultaneously, the lens positioning grooves 302 of the multi-station mold cores are all located on the same rotation axis, ensuring that all tested mobile phones are tested under completely equivalent disturbance conditions. The single-axis test frame 1 includes a carrier platform 101, a support frame 102, and a pad 103. The test mold core 3 is mounted on the upper end of the carrier platform 101, and the support frame 102 is mounted on the bottom end of the carrier platform 101. The support frame 102 is mounted to the movable end of the corner stage 203. The use of the pad 103 provides flexibility in height adjustment; pads 103 of different thicknesses can be replaced as needed to adjust the height or level of the entire single-axis test frame 1, ensuring that the lens positioning grooves 302 of all test mold cores 3 are located within the rotation axis of the corner stage 203. The design of support frame 102 optimizes the force transmission path, improves the rigidity and torsional resistance of the overall structure, and ensures the stability of synchronous motion in multiple workstations.

[0031] A support rod 204 is connected between the fixed end of the servo motor 202 and the corner stage 203. The support rod 204 significantly enhances the structural rigidity and connection stability between the servo motor 202 and the corner stage 203, effectively suppresses vibration transmission and possible deformation during motor operation, and ensures the motion accuracy and long-term operational reliability of the drive system under high-speed or high-load conditions, providing a solid mechanical foundation for high-precision anti-shake testing.

[0032] The servo motor 202 and the adjustment shaft of the corner stage 203 are connected by a coupling 205, which effectively compensates for any minor radial, axial or angular deviations that may exist between the output shaft of the servo motor 202 and the adjustment shaft of the corner stage 203. This reduces the stringent requirements for installation accuracy and significantly reduces vibration and impact during transmission, protecting the motor and the bearings of the corner stage 203. At the same time, it ensures the smoothness and accuracy of power transmission, which is a key link in achieving high-precision, low-noise disturbance simulation.

[0033] The operator first places multiple mobile phones under test into the mobile phone receiving slots 301 of the multiple test molds 3 set on the upper end of the single-axis test frame 1, ensuring that the optical center of the mobile phone camera is aligned with the lens positioning slot 302 at the bottom of the receiving slot. After starting the test system, the servo motor 202 in the drive base 2 receives the control signal and begins to work. The rotational motion generated by the servo motor 202 is precisely transmitted to the adjustment shaft of the corner stage 203 through the coupling 205. The corner stage 203 converts the input rotational motion into angular oscillation at its movable end. Since the single-axis test frame 1 is fixedly installed on the movable end of the corner stage 203, the entire single-axis test frame 1 and the multiple test molds 3 integrated on it, along with all the mobile phones under test placed on it, rotate as a whole in complete synchronization under the drive of the servo motor 202. This simulates the shaking of a mobile phone in a specific direction and amplitude during use.

[0034] Three imaging scenarios were recorded using an image acquisition device, such as... Figure 5 The images show: 1. Imaging when the platform is stationary; 2. Imaging when the camera module's image stabilization is off during platform shaking; 3. Imaging when the camera module's image stabilization is on during shaking. This data provides a basis for subsequent analysis of optical image stabilization performance.

[0035] The image data is analyzed using relevant image analysis algorithms to calculate indicators such as image sharpness, edge sharpness, and blur level. Figure 6 As shown, the image stabilization performance in the X and Y directions is quantified in decibels (dB) to obtain the optical image stabilization suppression rate, thereby quantitatively evaluating the optical image stabilization performance of the camera module. Based on the analysis results of these test data, it is determined whether the optical image stabilization function of the camera module or product under test meets the standards, providing a strong basis for product research and development improvement, quality control, etc.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A multi-station anti-shake testing mechanism, comprising a single-axis test frame and a drive base, wherein the single-axis test frame is mounted on the upper end of the drive base, and the drive base drives the test platform to move, characterized in that: The upper end of the single-axis test frame is provided with two or more test molds, and the surface of the test mold is provided with a mobile phone receiving slot for placing the product under test. The drive base consists of a base plate, a servo motor, and a corner stage. The servo motor and the corner stage are mounted on the upper end of the base plate. The adjustment shaft of the corner stage is connected to the rotation shaft of the servo motor. The single-axis test frame is fixedly mounted on the movable end of the corner stage.

2. The multi-station image stabilization testing mechanism according to claim 1, characterized in that: The test mold core is connected to the test platform by bolts, and a lens positioning groove is provided on the bottom surface of the mobile phone receiving slot.

3. The multi-station image stabilization testing mechanism according to claim 2, characterized in that: The rotation axis of the corner stage passes through the lens positioning groove.

4. The multi-station image stabilization testing mechanism according to any one of claims 1-3, characterized in that: A support rod is connected between the servo motor and the fixed end of the corner stage.

5. The multi-station image stabilization testing mechanism according to any one of claims 1-3, characterized in that: The single-axis test frame includes a bearing platform, a support frame, and a pad. The test mold core is installed at the upper end of the bearing platform, the support frame is installed at the bottom end of the bearing platform, and the support frame is installed to the movable end of the corner stage.

6. The multi-station image stabilization testing mechanism according to any one of claims 1-3, characterized in that: The servo motor and the adjustment shaft of the angular positioning stage are connected by a coupling.

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