Device for testing performance indexes of mobile phone camera through high-precision vibration table

Abstract

The utility model discloses a device for testing performance indexes of a mobile phone camera by a high-precision vibration table, which comprises a base, a rotary swing module and a light source module, and is characterized in that the rotary swing module is in sliding connection with the base through a sliding assembly, and the rotary swing module is used for placing a mobile phone and overturning and swinging the mobile phone; the light source module is movably arranged above the base and provides a positioning light source so as to ensure that the center of a camera of the mobile phone coincides with the positioning light source; according to the utility model, high-precision adjustment of the mobile phone in a rotation angle range of 0.1-8 degrees and a swing frequency range of 1Hz-8Hz is realized mainly through the first DD motor and the second DD motor, and the swing bracket is arranged at 45 degrees relative to the fixed bracket, so that the mobile phone can perform composite reciprocating motion in two directions of an X axis and a Y axis, and the mobile phone can be adjusted more accurately in the X-axis direction and the Y-axis direction. And the light source of the light source assembly is photographed to judge the anti-shake performance of the mobile phone.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a high-precision vibration table device for testing the performance indicators of mobile phone cameras. Background Technology

[0002] Optical Image Stabilization (OIS) is an imaging technology that reduces camera shake through physical compensation mechanisms. It is widely used in smartphones, digital cameras, and professional video equipment. Its core principle is to use a gyroscope sensor to detect device shake in real time, and a microprocessor to calculate the compensation displacement. This displacement drives the lens assembly or image sensor to move in the opposite direction to counteract the optical path shift caused by the shake, thus significantly improving image sharpness at low shutter speeds or in moving scenes.

[0003] In existing technologies, testing OIS (Optical Image Stabilization) devices generally involves matching a vibration slide, a servo module lead screw, and a controller. The vibration slide rotates at a certain angle and frequency, providing a certain swing and shaking test environment. The OIS optical image stabilization camera, combined with algorithms and a gyroscope sensor to counteract the shaking amplitude, maintains image stability in this environment, detects the image quality, and indirectly provides feedback on the camera's performance indicators. However, the above technologies cannot control the swing amplitude and frequency of the vibration slide, making it difficult to test under different vibration conditions. Therefore, a more reasonable OIS camera testing mechanism is urgently needed to solve the above technical problems. Utility Model Content

[0004] To address the shortcomings of the aforementioned technologies, which cannot precisely control the swing frequency and angle of the image stabilization testing mechanism, this invention provides a high-precision vibration table device for testing the performance indicators of mobile phone cameras.

[0005] To achieve the above objectives, this utility model provides a high-precision vibration table device for testing the performance indicators of mobile phone cameras, comprising:

[0006] A base, on which a mounting bracket is provided;

[0007] A rotating swing module is slidably connected to the base via the sliding component. The rotating swing module is used to place a mobile phone and to rotate and swing the mobile phone.

[0008] A light source module is movably mounted on the mounting bracket. The light source module provides a positioning light source to ensure that the center of the mobile phone's camera coincides with the positioning light source.

[0009] As an improvement of this utility model, the rotating swing module includes a base, a first DD motor, a swing bracket, and a fixed bracket. The base is fixedly mounted on the sliding assembly. The first DD motor is fixedly mounted on one side of the base. The two ends of the swing bracket are rotatably connected to the output end of the first DD motor and the end of the base away from the first DD motor, respectively, through swing bearings. The swing bracket is provided with at least one fixed bracket for fixing the mobile phone.

[0010] As an improvement of this utility model, the swing bracket is further provided with at least one second DD motor, and the output end of any second DD motor is rotatably connected to the fixed bracket.

[0011] As an improvement of this utility model, the sliding assembly includes a pumping cylinder, a sliding track, a chassis, and a connecting member. The base is fixedly mounted on the chassis, and the chassis is slidably mounted on the sliding track via a sliding block. The working end of the pumping cylinder is fixedly connected to the chassis via the connecting member. The pumping cylinder retracts to drive the chassis to move.

[0012] As an improvement of this utility model, the light source module includes a test light source plate, a synchronous belt, synchronous pulleys, transmission rods, an adjusting handwheel, and a measuring ruler. At least two synchronous pulleys are respectively mounted on two opposite brackets of the mounting bracket and are connected by the synchronous belt. One end of at least two transmission rods is coaxially connected to the synchronous pulleys, and the other end passes through the mounting bracket and the test light source plate in sequence, and is coaxially connected to the adjusting handwheel. The measuring ruler is fixedly mounted on the mounting bracket and is used to measure the displacement distance of the test light source plate.

[0013] As an improvement of this utility model, the swing bracket is set at a 45-degree angle relative to the fixed bracket.

[0014] As an improvement of this utility model, the rotation angle range of the first DD motor is 0.1° to 8°, and the oscillation frequency range is 1Hz to 8Hz.

[0015] As an improvement of this utility model, the rotation adjustment range of the first DD motor is 0 to 1.5°, and the oscillation frequency adjustment range is 1Hz.

[0016] As an improvement of this utility model, an auxiliary bearing and an auxiliary bracket are provided on one side of the sliding track. The auxiliary bracket is fixedly connected to the sliding track, and the auxiliary bearing is slidably sleeved on the auxiliary bracket and in contact with the chassis.

[0017] As an improvement of this utility model, the fixed bracket is provided with at least one fixed cylinder and a fixed clamping block. The output end of the fixed cylinder is fixedly connected to the fixed clamping block. When the fixed cylinder extends or retracts, the fixed clamping block squeezes the mobile phone.

[0018] The beneficial effects of this utility model are as follows: Compared with the prior art, this utility model provides a high-precision vibration table device for testing the performance indicators of mobile phone cameras, including a base, a rotating swing module, and a light source module. The rotating swing module is slidably connected to the base through a sliding component. The rotating swing module is used to place the mobile phone and rotate and swing it. The light source module is movably set above the base and provides a positioning light source to ensure that the center of the mobile phone's camera coincides with the positioning light source. During operation, the rotating swing module moves to a position opposite to the light source module through the sliding component, and the rotating swing module is activated to rotate and swing the mobile phone. This utility model mainly uses a first DD motor and a second DD motor to achieve high-precision adjustment of the mobile phone within the rotation angle range of 0.1° to 8° and the swing frequency range of 1Hz to 8Hz. The swing bracket is set at 45° relative to the fixed bracket, so that the mobile phone can perform compound reciprocating motion in both the X and Y axes. The anti-shake performance of the mobile phone is judged by taking pictures of the light source component. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present utility model;

[0020] Figure 2 This is a schematic diagram of the rotary swing module of this utility model;

[0021] Figure 3 This is a schematic diagram of the light source module of this utility model;

[0022] Figure 4 This is a schematic diagram of the fixing bracket of this utility model;

[0023] Figure 5 This is a schematic diagram of the sliding component of this utility model.

[0024] The symbols for the main components are explained below:

[0025] 1. Base; 2. Rotary swing module; 21. Base; 22. First DD motor; 23. Swing bracket; 24. Fixed bracket; 25. Second DD motor; 26. Swing bearing; 3. Sliding assembly; 31. Chassis; 32. Pull-out cylinder; 33. Sliding rail; 34. Sliding block; 35. Connector; 4. Light source module; 41. Test light source board; 42. Synchronous belt; 43. Synchronous pulley; 44. Transmission rod; 45. Adjusting handwheel; 46. Measuring ruler; 5. Auxiliary bearing; 6. Auxiliary bracket; 7. Fixed cylinder; 8. Fixed clamp; 9. Mounting bracket; 10. Limit block. Detailed Implementation

[0026] To more clearly illustrate this utility model, the following description, in conjunction with the accompanying drawings, will provide a further picture.

[0027] In the following description, specific examples are given to provide a more in-depth understanding of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of them. It should be understood that the specific embodiments described are only used to explain the present invention and are not intended to limit the present invention.

[0028] It should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of the said feature, integral, step, operation, element, or component, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, or combinations thereof.

[0029] Please see Figures 1-5 This utility model discloses a high-precision vibration table device for testing the performance indicators of mobile phone cameras, comprising:

[0030] Base 1, wherein a mounting bracket 9 is provided on the base 1;

[0031] A rotating swing module 2 is slidably connected to the base 1 via the sliding component 3. The rotating swing module 2 is used to place a mobile phone and to rotate and swing the mobile phone.

[0032] A light source module 4 is movably mounted on the mounting bracket 9. The light source module 4 provides a positioning light source to ensure that the center of the mobile phone's camera coincides with the positioning light source.

[0033] Among them, the rotating swing module 2, the light source module 4, and the sliding module 3 can be electrically connected to the main control board.

[0034] This invention provides a high-precision, fully automatic device for detecting the image stabilization performance of a camera. It uses a rotating swing module 2 to swing a mobile phone (or other electronic products with image stabilization and cameras). High-precision control is achieved through a first DD motor 22 and a DD motor driver, controlling parameters such as the swing amplitude and vibration amplitude of the rotating swing module 2. The parameters of the DD motor can also be adjusted via a host computer and controller. When the sliding component 3 moves the rotating swing module 2 below the light source component, the rotating swing module 2 is activated, causing the mobile phone to swing. Simultaneously, the light source module 4 emits light, and the mobile phone takes pictures during the swing. By adjusting the swing parameters of the rotating swing module 2, such as frequency and swing angle, and combining this with the image quality captured by the mobile phone, the image stabilization performance of the phone can be determined. Furthermore, the device can precisely adjust the swing frequency and angle experienced by the mobile phone, using multiple different parameter indicators to obtain the maximum performance of the mobile phone.

[0035] The working principle of this utility model is as follows:

[0036] The phone is placed on the fixed point of the rotating swing module 2 and fixed. After that, the sliding component 3's actuating cylinder 32 moves the rotating swing module 2 to a position opposite to the light source module 4. Then, the rotating swing module 2 is activated, and the first DD motor 22 rotates to drive the phone to reciprocate within a frequency range of 0.1 degrees to 8 degrees and 1Hz to 8Hz via the swing bracket 23. The DD motor driver performs high-precision gear adjustment to keep the amplitude sampling sine wave distortion rate within 4% for testing. At the same time, the swing bracket 23 is set at 45° relative to the fixed bracket 24, so that the phone can change its position in both the X and Y axes simultaneously. When the swing bracket 23 swings, it is equivalent to changing the X and Y axis positions of the phone simultaneously. Meanwhile, the positioning light source of the light source module 4 coincides with the center of the phone's camera. The phone can take pictures with the light source module 4 as a reference. The phone's photography performance is determined based on the set swing parameters and the image quality of the phone. The second DD motor 26 set on the swing bracket 23 can rotate the fixed bracket 24 to fine-tune the phone's angle, satisfying the phone's automatic adjustment function.

[0037] In this embodiment, the rotating swing module 2 includes a base 21, a first DD motor 22, a swing bracket 23, and a fixed bracket 24. The base 21 is fixedly mounted on the sliding assembly 3. The first DD motor 22 is fixedly mounted on one side of the base 21. The two ends of the swing bracket 23 are rotatably connected to the output end of the first DD motor 22 and one end of the base 21 respectively via swing bearings 26. At least one fixed bracket 24 is provided on the swing bracket 23 to fix the mobile phone. This invention uses a DD motor to meet the high-precision testing requirements of the mobile phone. The DD motor is a direct-connection load that eliminates intermediate transmission links such as reducers and gears, thus eliminating backlash error and mechanical vibration. In this invention, the mobile phone is fixed on the fixed bracket 24. The first DD motor 22 rotates to rotate the swing bracket 23 via the swing bearings 26, thereby achieving vibration and swing of the mobile phone. Combined with the high-resolution encoder and closed-loop control algorithm of the DD motor, it achieves ultra-high positioning accuracy of ±1 second and millisecond-level dynamic response. Its low-speed, high-torque output solves the problems of traditional servo motors. The device addresses the vibration issue during machining and reducer operation by employing an ultra-thin hollow structure and through-hole design, saving installation space and facilitating wiring. It also boasts advantages such as high rigidity, low noise, maintenance-free operation, and energy efficiency exceeding 90%. Furthermore, through DD motor driver pulse control, the adjustment precision of the DD motor reaches 0.05° oscillation amplitude and 1Hz vibration amplitude. The first DD motor 22 has a rotation angle range of 0.1° to 8° and an oscillation frequency range of 1Hz to 8Hz. The rotation adjustment amplitude of the first DD motor 22 is 1.5°, and the oscillation frequency adjustment amplitude is 1Hz. Users can precisely adjust high frequency and low angle or low frequency and high angle test environments, obtaining the upper limit of the phone's anti-shake performance through multiple sets of tests with different parameters. The swing bracket 23 is set at a 45-degree angle relative to the fixed bracket 24. Therefore, when the swing bracket 23 rotates and swings, the phone on the fixed bracket 24 is equivalent to being displaced simultaneously in the X and Y axis directions. The fixed bracket 24 swings along a straight line at 45°, rather than in a direction perpendicular or parallel to the swing bracket 23.

[0038] In this embodiment, the light source module 4 includes a test light source plate 41, a synchronous belt 42, synchronous pulleys 43, transmission rods 44, an adjusting handwheel 45, and a measuring scale 46. At least two synchronous pulleys 43 are respectively mounted on two opposite brackets of the mounting bracket 9 and are connected by the synchronous belt 42. One end of each of the at least two transmission rods 44 is coaxially connected to the synchronous pulleys 43, and the other end passes through the mounting bracket 9 and the test light source plate 41 in sequence, and is coaxially connected to the adjusting handwheel 45. The measuring scale 46 is fixedly mounted on the mounting bracket 9 and is used to measure the displacement distance of the test light source plate 41. The test light source plate 41 is mainly controlled by rotating the adjusting handwheel 45. Then, the transmission rod 44 rotates to drive the test light source plate 41 to move. The two synchronous pulleys 43 are also connected by a synchronous belt 42. Therefore, when any one of the adjustment handwheels 45 is rotated, the other synchronous pulley 43 is rotated through the synchronous belt 42 to drive the corresponding transmission rod 44, so that the test light source plate 41 can move synchronously. The measuring ruler 46 on the mounting bracket 9 can also be used to observe the current height of the test light source plate 41 to meet the testing needs of different heights. It is convenient and practical. The test light source plate 41 can provide a test light source to meet the mobile phone's photography needs. Based on the image quality, it is easy to test the mobile phone's image stabilization performance.

[0039] In this embodiment, the swing bracket 23 is also provided with at least one second DD motor 26, and the output end of any second DD motor 26 is rotatably connected to the fixed bracket 24; the fixed bracket 24 can be rotated slightly by the second DD motor 26 to meet the automatic adjustment function of the mobile phone and achieve the anti-shake effect test of the mobile phone.

[0040] In this embodiment, the sliding assembly 3 includes a pull cylinder 32, a sliding track 33, a chassis 31, and a connector 35. The base 21 is fixedly mounted on the chassis 31, and the chassis 31 is slidably mounted on the sliding track 33 via a sliding block 34. The working end of the pull cylinder 32 is fixedly connected to the chassis 31 via the connector 35. The working end of the pull cylinder 32 retracts to drive the chassis 31 to move via the connector, so that the chassis 31 can drive the rotating swing module 2 to move, so that the mobile phone camera can be aligned with the test light source. Furthermore, an auxiliary bearing 5 and an auxiliary bracket 6 are also provided on one side of the sliding track 33. The auxiliary bracket 6 is fixedly connected to the sliding track 33, and the auxiliary bearing 5 is slidably mounted on the auxiliary bracket 6 and in contact with the chassis 31. When the chassis 31 is moved by the pull cylinder 32, the auxiliary bearing 5 can reduce the friction between the sliding block 34 and the sliding track 33, helping the chassis 31 slide more smoothly and providing the chassis 31 with an additional load-bearing support point to ensure the stability of the chassis 31's sliding.

[0041] In this embodiment, the fixed bracket 24 is provided with at least one fixed cylinder 7 and a fixed clamping block 8. The output end of the fixed cylinder 7 is fixedly connected to the fixed clamping block 8. When the fixed cylinder 7 extends or retracts, the fixed clamping block 8 compresses the mobile phone with the thrust provided by the fixed cylinder 7, so that the fixed clamping block 8 can hold the mobile phone. A fixed cylinder 7 and a fixed clamping block 8 are set as a group, and a group of fixed cylinders 7 and fixed clamping blocks 8 are placed at each of the four corners of the mobile phone so that the mobile phone can be balanced by force, and the fixed clamping block 8 can hold it more firmly and stably. Alternatively, a limiting block 10 can be set to limit the mobile phone, and a group of fixed cylinders 7 and fixed clamping blocks 8 can be set in the horizontal and vertical directions of the mobile phone. When the fixed cylinder 7 extends, the fixed clamping block 8 abuts one corner of the mobile phone against the limiting block 10. The pressure of the fixed cylinder makes the mobile phone stick tightly to the limiting block, ensuring that it will not be swinged out.

[0042] The advantages of this utility model are:

[0043] This invention mainly uses a first DD motor and a second DD motor to achieve high-precision adjustment of the mobile phone within the rotation angle range of 0.1° to 8° and the swing frequency range of 1Hz to 8Hz. The swing bracket is set at 45° relative to the fixed bracket, so that the mobile phone can perform compound reciprocating motion in both the X and Y axes. The anti-shake performance of the mobile phone is judged by taking pictures of the light source of the light source component.

[0044] The above-disclosed embodiments are only a few specific examples of this utility model. However, this utility model is not limited thereto. Any variations that can be conceived by those skilled in the art should fall within the protection scope of this utility model.

Claims

1. A high-precision vibration table device for testing the performance indicators of mobile phone cameras, characterized in that, include: A base, on which a mounting bracket is provided; A rotating swing module is slidably connected to a base via a sliding assembly. The rotating swing module is used to hold a mobile phone and to rotate and swing it. The rotating swing module includes a base, a first DD motor, a swing bracket, and a fixed bracket. The base is fixedly mounted on the sliding assembly. The first DD motor is fixedly mounted on one side of the base. Both ends of the swing bracket are rotatably connected to the output end of the first DD motor and the end of the base away from the first DD motor, respectively, via swing bearings. At least one fixed bracket is provided on the swing bracket to secure the mobile phone. A light source module is movably mounted on the mounting bracket. The light source module provides a positioning light source to ensure that the center of the mobile phone's camera coincides with the positioning light source.

2. The high-precision vibration table device for testing the performance indicators of mobile phone cameras according to claim 1, characterized in that, The swing bracket is also equipped with at least one second DD motor, and the output end of any one of the second DD motors is rotatably connected to the fixed bracket.

3. The high-precision vibration table device for testing the performance indicators of mobile phone cameras according to claim 1, characterized in that, The swing bracket is set at a 45-degree angle relative to the fixed bracket.

4. The high-precision vibration table device for testing the performance indicators of mobile phone cameras according to claim 1, characterized in that, The first DD motor has a rotation angle range of 0.1° to 8° and an oscillation frequency range of 1Hz to 8Hz.

5. The high-precision vibration table device for testing the performance indicators of mobile phone cameras according to claim 4, characterized in that, The first DD motor has a rotation adjustment range of 0 to 1.5° and an oscillation frequency adjustment range of 1Hz.

6. The high-precision vibration table device for testing the performance indicators of mobile phone cameras according to claim 1, characterized in that, The fixed bracket is provided with at least one fixed cylinder and a fixed clamping block. The output end of the fixed cylinder is fixedly connected to the fixed clamping block. When the fixed cylinder extends or retracts, the fixed clamping block clamps and fixes the mobile phone.

7. The high-precision vibration table device for testing the performance indicators of mobile phone cameras according to claim 1, characterized in that, The sliding assembly includes a pumping cylinder, a sliding rail, a chassis, and a connector. The base is fixedly mounted on the chassis, and the chassis is slidably mounted on the sliding rail via a sliding block. The working end of the pumping cylinder is fixedly connected to the chassis via the connector. The pumping cylinder retracts to drive the chassis to move.

8. The high-precision vibration table device for testing the performance indicators of mobile phone cameras according to claim 7, characterized in that, An auxiliary bearing and an auxiliary bracket are also provided on one side of the sliding track. The auxiliary bracket is fixedly connected to the sliding track, and the auxiliary bearing is slidably sleeved on the auxiliary bracket and in contact with the chassis.

9. The high-precision vibration table device for testing the performance indicators of mobile phone cameras according to claim 8, characterized in that, The light source module includes a test light source board, a synchronous belt, synchronous pulleys, transmission rods, an adjusting handwheel, and a measuring ruler. At least two synchronous pulleys are respectively mounted on two opposite brackets of the mounting bracket and are connected by the synchronous belt. One end of at least two transmission rods is coaxially connected to the synchronous pulleys, and the other end passes through the mounting bracket and the test light source board in sequence, and is coaxially connected to the adjusting handwheel. The measuring ruler is fixedly mounted on the mounting bracket and is used to measure the displacement distance of the test light source board.

Images