Electric testing device of lens module and testing method thereof

Abstract

The invention provides an electric testing device of a lens module and a testing method of the electric testing device, and relates to the technical field of lens module testing, the electric testing device comprises an electric three-axis moving table, a six-axis regulator and a control system, and a mounting frame is arranged at the moving end of the electric three-axis moving table; the mounting rack is provided with a first mounting groove and a second mounting groove which are used for detachably inserting the light source plate and the test plate respectively; a placing frame is arranged at the moving end of the six-axis adjuster and is used for detachably and fixedly mounting a jig of a lens module; the six-axis adjuster is used for adjusting the position of the jig; the control system is in communication connection with a driving mechanism of the electric three-axis moving table; the light source plate and the test plate are driven by the electric three-axis moving table to act, the test efficiency is higher, the light source plate and the test plate are detachably inserted through the mounting frame, the jig for detachably and fixedly mounting the lens module is utilized by the placement frame, the test efficiency can be improved, and the test applicability and compatibility of the test device can also be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of lens module testing, and in particular to an electric testing device for a lens module and a testing method thereof. Background Art

[0002] As the core component of camera equipment, lens modules are widely used in smart phones, surveillance equipment, vehicle cameras, medical imaging equipment and other fields. The performance of lens modules directly determines the imaging quality of the equipment. As the market demand for high-definition image quality continues to increase, the design and manufacturing technology of lens modules is becoming increasingly complex.

[0003] In the manufacturing process of lens modules, it is very important to ensure that all functions of the module are normal. Therefore, the functional test of the lens module has become one of the key steps in the production line. Traditional tests mainly include checking the optical performance (such as focus, resolution, color reproduction, etc.), mechanical stability (such as anti-shake function), and electrical performance (such as voltage, current, etc.) of the lens module.

[0004] However, the lens module testing device known to the inventor still has the following problems:

[0005] The test device has a low degree of automation and mainly relies on manual operation or semi-automatic equipment. The operation is cumbersome and it is difficult to meet the needs of fast and efficient testing. In addition, the adjustment sensitivity of the test equipment is low, and the accuracy of manual adjustment is poor, which cannot meet the needs of high-precision testing. In addition, the test board and light source board on the test device are fixed and are usually used to test a certain lens module. The versatility and compatibility of the test device are poor, and it cannot adapt to the diverse needs of different lens modules.

[0006] To solve the above problems, there is an urgent need for an electric testing device that can improve testing efficiency, enhance detection accuracy, and adapt to a variety of lens modules to meet the production line's needs for fast, efficient, and accurate quality control. Summary of the invention

[0007] The purpose of the present invention is to provide an electric testing device and a testing method for a lens module to solve the problems existing in the prior art, meet the requirements of fast and efficient testing of the lens module, improve the testing efficiency and the testing applicability and compatibility of different lens modules.

[0008] To achieve the above object, the present invention provides the following solutions:

[0009] An electric testing device for a lens module comprises an electric three-axis movable platform, a six-axis adjuster and a control system, wherein a mounting frame is arranged on the movable end of the electric three-axis movable platform, and the mounting frame comprises a first mounting slot and a second mounting slot for detachably inserting a light source board and a test board, respectively, wherein the second mounting slot is located in front of the first mounting slot, and the mounting plane of the first mounting slot is arranged parallel to the mounting plane of the second mounting slot; a placing frame is arranged on the movable end of the six-axis adjuster, and the placing frame is used for detachably fixing a fixture on which a lens module is installed; the six-axis adjuster is used for adjusting the position of the fixture so that the lens module is located directly in front of the test board in the second mounting slot; the control system is communicatively connected with a driving mechanism of the electric three-axis movable platform, and is used for controlling the electric three-axis movable platform to produce an action to adjust the position of the light source board and the test board.

[0010] As one embodiment, the mounting frame includes a mounting shell and a limit plate, the mounting shell is square in shape, and the mounting shell is fixedly connected to the movable end of the electric three-axis movable platform; the mounting shell has a first opening and a second opening with opening directions perpendicular to each other, the limit plate is fixed at the first opening, and the second opening is used to insert the light source board into the mounting shell; the limit plate is used to limit the light source board in the opening direction of the first opening; the limit plate includes a third opening and a fourth opening, a retaining ring is fixed at the third opening, and the fourth opening is used to insert the test board into the area between the retaining ring and the light source board.

[0011] As an implementation manner, a first screw hole is provided on the mounting shell, and the first screw hole is used to connect a first fastening screw for fastening the light source board.

[0012] As an implementation manner, a second screw hole is provided on the retaining ring, and the second screw hole is used to connect a second fastening screw for fastening the test plate.

[0013] As one embodiment, the placement rack is an L-shaped structure, one end of the L-shaped structure is fixedly connected to the output end of the six-axis adjuster, and the other end of the L-shaped structure is used to fix the fixture.

[0014] As an implementation manner, the other end of the L-shaped structure has a mounting groove, and a third screw hole is provided on the groove wall of the mounting groove, and the third screw hole is used to connect a third fastening screw that fastens the fixture.

[0015] As an embodiment, the electric three-axis mobile platform includes an X-axis moving mechanism, a Y-axis moving mechanism and a Z-axis moving mechanism, wherein the X-axis moving mechanism includes a fixed frame, an X-axis driving motor and an X-axis guiding mechanism arranged on the fixed frame, an output end of the X-axis driving motor is connected to an X-axis screw, and an X-axis moving nut is arranged on the X-axis screw; the Y-axis moving mechanism includes an X-axis sliding seat arranged on the X-axis guiding mechanism, a Y-axis driving motor and a Y-axis guiding mechanism arranged on the X-axis sliding seat, and the X-axis sliding seat is connected to the X-axis moving mechanism. The nut is fixedly connected, the output end of the Y-axis driving motor is connected to the Y-axis screw, and the Y-axis moving nut is arranged on the Y-axis screw; the Z-axis moving mechanism comprises a Y-axis sliding seat arranged on the Y-axis guiding mechanism and a Z-axis driving motor and a Z-axis guiding mechanism arranged on the Y-axis sliding seat, the Y-axis sliding seat is fixedly connected to the Y-axis moving nut, the output end of the Z-axis driving motor is connected to the Z-axis screw, and the Z-axis moving nut is arranged on the Z-axis screw, the Z-axis moving nut is fixed to the Z-axis moving nut, the mounting frame is fixed to the Z-axis moving nut, and the mounting frame is slidably connected to the Z-axis guiding mechanism.

[0016] As an implementation manner, the X-direction guiding mechanism, the Y-direction guiding mechanism, and the Z-direction guiding mechanism are all slide rails.

[0017] As one embodiment, the six-axis adjuster includes an X-axis translation mechanism, a Y-axis translation mechanism, a Z-axis translation mechanism, an X-axis rotation mechanism, a Y-axis rotation mechanism and a Z-axis rotation mechanism; the X-axis translation mechanism, the Y-axis translation mechanism, the Z-axis translation mechanism, the X-axis rotation mechanism, the Y-axis rotation mechanism and the Z-axis rotation mechanism are all driven by a knob.

[0018] The present invention also discloses a lens module testing method implemented based on the above-mentioned electric testing device of the lens module, comprising the following steps: inserting a light source board into a first mounting slot, inserting a test board into a second mounting slot, and fixing a chart in the middle of the test board; installing the lens module on a fixture, and fixing the fixture on a placement rack; a control system controls the movement of the electric three-axis moving stage to automatically return the light source board to zero, rotates the knob to make the fixture and the test board stick together, stops rotating, and starts testing according to test requirements.

[0019] Compared with the prior art, the present invention has the following technical effects:

[0020] The present invention drives the light source board and the test board to move through an electric three-axis mobile platform, avoiding manual operation test, and the test efficiency and the adjustment accuracy of the chart can be significantly improved, which can meet the requirements of fast and efficient testing of the lens module. In addition, the present invention uses a mounting frame to detachably insert the light source board and the test board, and uses a placement frame to detachably fix the fixture of the lens module, so that the light source board, the test board, the chart, and the lens module can be replaced conveniently and quickly, which can not only improve the test efficiency, but also meet the test of different performances of different lens modules, and improve the test applicability and compatibility of the test device to different lens modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 It is a structural schematic diagram of an electric testing device for a lens module in one embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of a six-axis regulator in one embodiment of the present invention;

[0024] Figure 3 A schematic diagram of the structure of an installation shell in one embodiment of the present invention;

[0025] Figure 4 A schematic diagram of the structure of a limit plate in one embodiment of the present invention;

[0026] Figure 5 It is a schematic structural diagram of a placement rack in one embodiment of the present invention.

[0027] Description of reference numerals:

[0028] 1. Six-axis adjuster; 2. Light source board; 3. Test board; 4. Placement rack; 5. Fixture; 6. Mounting shell; 7. Limit plate; 8. First screw hole; 9. Second screw hole; 10. Mounting slot; 11. Third screw hole; 12. X-axis moving mechanism; 13. Y-axis moving mechanism; 14. Z-axis moving mechanism; 15. X-axis driving motor; 16. Y-axis driving motor; 17. Z-axis driving motor; 18. X-axis translation mechanism; 19. Y-axis translation mechanism; 20. Z-axis translation mechanism; 21. X-axis rotation mechanism; 22. Y-axis rotation mechanism; 23. Z-axis rotation mechanism; 24. Test platform; 25. Test computer; 26. Retaining ring. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] The purpose of the present invention is to provide an electric testing device and a testing method for a lens module to solve the problems existing in the prior art, meet the requirements of fast and efficient testing of the lens module, improve the testing efficiency and the testing applicability and compatibility of different lens modules.

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Embodiment 1:

[0033] like Figure 1 to Figure 5 As shown, this embodiment discloses an electric test device for a lens module, including an electric three-axis mobile platform, a six-axis adjuster 1 and a control system. A mounting frame is arranged on the mobile end of the electric three-axis mobile platform, and the mounting frame has a first mounting groove 10 and a second mounting groove 10 for removably inserting a light source board 2 and a test board 3, respectively, and the second mounting groove 10 is located in front of the first mounting groove 10. After the test board 3 is installed in the second mounting groove 10, a chart (test chart) is fixed in the middle of the test board 3. In this embodiment, the first mounting groove 10 and the second mounting groove 10 are both square in shape, and the mounting plane of the first mounting groove 10 is arranged parallel to the mounting plane of the second mounting groove 10, so that the light source board 2 and the test board 3 are parallel after installation. A placement frame 4 is arranged on the mobile end of the six-axis adjuster 1, and the placement frame 4 is used for removably fixing a fixture 5 on which a lens module is installed; the six-axis adjuster 1 is used to adjust the position of the fixture 5 so that the lens module is located in front of the test board 3 in the second mounting groove 10. During the test process, the six-axis adjuster 1 is adjusted according to the test requirements to adjust the posture of the lens module. The control system is in communication connection with the driving mechanism of the electric three-axis moving platform, and is used to control the electric three-axis moving platform to move and adjust the positions of the light source board 2 and the test board 3 during the test process.

[0034] Therefore, this embodiment drives the light source board 2 and the test board 3 to move through the electric three-axis mobile platform, avoiding manual operation testing, and the test efficiency and the adjustment accuracy of the chart can be significantly improved, which can meet the requirements of fast and efficient testing. In addition, this embodiment uses a mounting frame to detachably insert the light source board 2 and the test board 3, and uses a placement frame 4 to detachably fix the fixture 5 of the lens module, so that the light source board 2, the test board 3, the chart, and the lens module can be replaced conveniently and quickly, which can not only improve the test efficiency, but also meet the different performances of different lens modules. Testing of different lens modules improves the applicability and compatibility of the test device for testing different lens modules.

[0035] like Figure 3 , Figure 4 As shown, in this embodiment, the mounting frame includes a mounting shell 6 and a limiting plate 7. The mounting shell 6 is square in shape and is fixedly connected to the moving end of the electric three-axis moving platform. The mounting shell 6 has a first opening and a second opening with opening directions perpendicular to each other, that is, the square shape has at least two adjacent openings. The limiting plate 7 is fixed at the first opening, and the area between the limiting plate 7 and the mounting shell 6 body forms a first mounting groove 10. The limiting plate 7 is used to limit the light source board 2 in the opening direction of the first opening. The first opening is used for the light source board 2 to transmit light outward, and the second opening is used to insert the light source board 2 into the mounting shell 6. The limiting plate 7 includes a third opening and a fourth opening. A retaining ring 26 is fixed at the third opening, and the fourth opening is used to insert the test board 3 into the area between the retaining ring 26 and the light source board 2. At this time, the area between the light source board 2 and the retaining ring 26 forms a second mounting groove 10.

[0036] The mounting shell 6 is provided with a first screw hole 8, and the first screw hole 8 is used to connect the first fastening screw for fastening the light source board 2. The retaining ring 26 is provided with a second screw hole 9, and the second screw hole 9 is used to connect the second fastening screw for fastening the test board 3. It should be noted that the light source board 2 and the test board 3 are usually arranged in a mounting frame. When in use, the light source board 2, the test board 3 and the corresponding mounting frame will be arranged in the first mounting groove 10 or the second mounting groove 10; the first fastening screw or the second fastening screw abuts against the corresponding mounting frame to ensure that the position of the light source board 2 or the test board 3 does not move, so as to avoid the situation in which the light source board 2 and the test board 3 shake and shift during the adjustment of the position of the chart by the electric three-axis moving platform, resulting in poor test accuracy.

[0037] like Figure 5As shown, in this embodiment, the placement frame 4 is an L-shaped structure, one end of the L-shaped structure is fixedly connected to the output end of the six-axis adjuster 1, and the other end of the L-shaped structure is used to fix the fixture 5, and the fixture 5 is a clamp for fixing the lens module. The fixture 5 can adopt a common structure in this field. Specifically, the other end of the L-shaped structure has a mounting groove 10, and a third screw hole 11 is provided on the groove wall of the mounting groove 10, and the third screw hole 11 is used to connect the third fastening screw for fastening the fixture 5. The placement frame 4 with an L-shaped structure is conducive to bringing the fixture 5 closer to the test board 3, avoiding the electric three-axis mobile platform or the six-axis adjuster 1 from hindering the test process.

[0038] In this embodiment, the electric three-axis mobile platform includes an X-axis moving mechanism 12, a Y-axis moving mechanism 13 and a Z-axis moving mechanism 14. The X-axis moving mechanism 12 includes a fixed frame, an X-axis driving motor 15 and an X-axis guiding mechanism arranged on the fixed frame. The output end of the X-axis driving motor 15 is connected to an X-axis screw, and an X-axis moving nut is arranged on the X-axis screw. The Y-axis moving mechanism 13 includes an X-axis sliding seat arranged on the X-axis guiding mechanism, a Y-axis driving motor 16 and a Y-axis guiding mechanism arranged on the X-axis sliding seat. The X-axis sliding seat The output end of the Y-direction drive motor 16 is connected to a Y-direction screw, and a Y-direction screw is provided on the Y-direction screw. The Z-direction moving mechanism 14 includes a Y-direction sliding seat provided on the Y-direction guiding mechanism, a Z-direction drive motor 17 provided on the Y-direction sliding seat, and a Z-direction guiding mechanism. The Y-direction sliding seat is fixedly connected to the Y-direction moving nut, the output end of the Z-direction drive motor 17 is connected to a Z-direction screw, and a Z-direction moving nut is provided on the Z-direction screw. The Z-direction moving nut is fixed to a mounting bracket, and the mounting bracket is slidably connected to the Z-direction guiding mechanism. The X-direction drive motor 15, the Y-direction drive motor 16, and the Z-direction drive motor 17 are all connected to the control system for communication.

[0039] Specifically, in this embodiment, the X-direction guiding mechanism, the Y-direction guiding mechanism and the Z-direction guiding mechanism are all slide rails.

[0040] like Figure 2 As shown, in this embodiment, the six-axis regulator 1 includes an X-axis translation mechanism 18, a Y-axis translation mechanism 19, a Z-axis translation mechanism 20, an X-axis rotation mechanism 21, a Y-axis rotation mechanism 22, and a Z-axis rotation mechanism 23; the X-axis translation mechanism 18, the Y-axis translation mechanism 19, the Z-axis translation mechanism 20, the X-axis rotation mechanism 21, the Y-axis rotation mechanism 22, and the Z-axis rotation mechanism 23 are all driven by knobs, and by adjusting the knobs on the corresponding mechanisms, the lens module can be driven to translate in the X, Y, and Z directions or rotate around the X, Y, and Z axes to meet the test requirements. The six-axis regulator 1 can use common devices to achieve the purpose of manually fine-tuning the lens module.

[0041] In this embodiment, the electric three-axis moving platform and the six-axis regulator 1 are both installed on the test platform 24; a test computer 25 is also installed on the test platform 24, and the test computer 25 stores a control system.

[0042] Embodiment 2:

[0043] The present embodiment discloses a lens module testing method implemented by the electric testing device of the lens module described above, comprising the following steps: inserting the light source board 2 into the first mounting slot 10, inserting the test board 3 into the second mounting slot 10, fixing the chart in the middle of the test board 3, the chart can be fixed by pasting, turning on the light source board 2, and adjusting the brightness. Select the corresponding fixture 5 according to the test item, install the lens module on the fixture 5, fix the fixture 5 on the placement rack 4, turn on the test software in the control system, and ensure that the lens module can be lit. The control system controls the action of the electric three-axis moving stage to automatically return the light source board 2 to zero, rotates the knob to make the fixture 5 close to the test board 3, stops rotating, and starts testing according to the test requirements. The operating system controls the electric three-axis moving stage and manually adjusts the six-axis adjuster 1 to perform the test process of different items.

[0044] The testing process of different performances of the lens module and the specific operations performed on the testing software are well known to those skilled in the art, and the detailed operations of the testing process are not described in detail in this embodiment.

[0045] Adaptive changes made according to actual needs are all within the protection scope of the present invention.

[0046] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An electric testing device for a lens module, characterized in that: include: An electric three-axis mobile platform, wherein a mounting frame is provided on the mobile end of the electric three-axis mobile platform, and the mounting frame has a first mounting groove and a second mounting groove for detachably inserting a light source board and a test board, respectively, the second mounting groove is located in front of the first mounting groove, and the mounting plane of the first mounting groove is arranged parallel to the mounting plane of the second mounting groove; A six-axis adjuster, wherein a placement frame is provided on the movable end of the six-axis adjuster, and the placement frame is used to detachably fix a fixture on which a lens module is installed; the six-axis adjuster is used to adjust the position of the fixture so that the lens module is located directly in front of the test board in the second mounting groove; And a control system, which is communicatively connected with the driving mechanism of the electric three-axis moving platform and is used to control the electric three-axis moving platform to produce an action to adjust the positions of the light source board and the test board.

2. The electric testing device for the lens module according to claim 1, characterized in that: The mounting frame includes a mounting shell and a limiting plate, the mounting shell is in a square shape, and the mounting shell is fixedly connected to the moving end of the electric three-axis moving platform; the mounting shell has a first opening and a second opening with opening directions perpendicular to each other, the limiting plate is fixed at the first opening, and the second opening is used to insert the light source board into the mounting shell; The limiting plate is used to limit the light source board in the opening direction of the first opening; the limiting plate includes a third opening and a fourth opening, a retaining ring is fixed at the third opening, and the fourth opening is used to insert the test board into the area between the retaining ring and the light source board.

3. The electric testing device for the lens module according to claim 2, characterized in that: The mounting shell is provided with a first screw hole, and the first screw hole is used for connecting a first fastening screw for fastening the light source board.

4. The electric testing device for the lens module according to claim 2, characterized in that: The retaining ring is provided with a second screw hole, and the second screw hole is used for connecting a second fastening screw for fastening the test plate.

5. The electric testing device for the lens module according to claim 1, characterized in that: The placement rack is an L-shaped structure, one end of the L-shaped structure is fixedly connected to the output end of the six-axis regulator, and the other end of the L-shaped structure is used to fix the fixture.

6. The electric testing device for the lens module according to claim 5, characterized in that: The other end of the L-shaped structure has a mounting groove, and a third screw hole is arranged on the groove wall of the mounting groove. The third screw hole is used to connect and fasten a third fastening screw of the fixture.

7. The electric testing device for the lens module according to any one of claims 1 to 6, characterized in that: The electric three-axis mobile platform includes an X-direction moving mechanism, a Y-direction moving mechanism and a Z-direction moving mechanism. The X-direction moving mechanism includes a fixed frame, an X-direction driving motor and an X-direction guiding mechanism arranged on the fixed frame. The output end of the X-direction driving motor is connected to an X-direction screw, and an X-direction moving nut is arranged on the X-direction screw; the Y-direction moving mechanism includes an X-direction sliding seat arranged on the X-direction guiding mechanism, a Y-direction driving motor and a Y-direction guiding mechanism arranged on the X-direction sliding seat, and the X-direction sliding seat is fixed to the X-direction moving nut. The output end of the Y-axis driving motor is connected with a Y-axis screw, and a Y-axis moving nut is arranged on the Y-axis screw; the Z-axis moving mechanism comprises a Y-axis sliding seat arranged on the Y-axis guiding mechanism and a Z-axis driving motor and a Z-axis guiding mechanism arranged on the Y-axis sliding seat, the Y-axis sliding seat is fixedly connected with the Y-axis moving nut, the output end of the Z-axis driving motor is connected with a Z-axis screw, and a Z-axis moving nut is arranged on the Z-axis screw, the Z-axis moving nut is fixed with the mounting bracket, and the mounting bracket is slidably connected with the Z-axis guiding mechanism.

8. The electric testing device for the lens module according to claim 7, characterized in that: The X-direction guiding mechanism, the Y-direction guiding mechanism and the Z-direction guiding mechanism are all slide rails.

9. The electric testing device for the lens module according to claim 7, characterized in that: The six-axis adjuster includes an X-direction translation mechanism, a Y-direction translation mechanism, a Z-direction translation mechanism, an X-direction rotation mechanism, a Y-direction rotation mechanism and a Z-direction rotation mechanism; the X-direction translation mechanism, the Y-direction translation mechanism, the Z-direction translation mechanism, the X-direction rotation mechanism, the Y-direction rotation mechanism and the Z-direction rotation mechanism are all driven by knobs.

10. A lens module testing method implemented by the electric testing device for lens modules according to any one of claims 1 to 9, characterized in that: The following steps are involved: Insert the light source board into the first mounting groove, insert the test board into the second mounting groove, and fix the chart in the middle of the test board; Install the lens module on the jig, and fix the jig on the placement frame; The control system controls the electric three-axis moving stage to automatically return the light source board to zero, rotates the knob to make the fixture close to the test board, stops rotating, and starts testing according to the test requirements.

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