Fixed structure and detection device containing fixed structure

Abstract

The present application provides a fixed structure, including a first carrier plate, a second carrier plate and an electronic connector. The first carrier plate has a first through hole. The second carrier plate can be movably connected to the first carrier plate, and the second carrier plate has a first accommodating groove, the first accommodating groove is used to accommodate a motor with a lens, and the second carrier plate is also provided with a second through hole that passes through the bottom of the first accommodating groove, and the central axes of the first through hole and the second through hole are on the same straight line. The fixed structure provided by the present application can detect the optical performance used for the motor-driven lens movement, thereby improving the production efficiency of detecting motors and lenses. The present application also provides a detection device having the fixed structure.

Description

Technical Field

[0001] The present application relates to the technical field of device testing, and in particular to a fixing structure and a detection device containing the fixing structure. Background Art

[0002] Camera modules are commonly found in modern electronic devices, and high-definition camera functionality is a key development trend. The autofocus component is a crucial factor affecting the optical performance of high-definition camera modules. The autofocus component consists of a lens and a voice coil motor (VCM). The VCM is connected to the lens and drives the lens to focus the image onto the sensor's photosensitive surface, thus achieving autofocus.

[0003] In the era of mass production of camera modules, the requirements for yield rates are becoming increasingly stringent. Autofocus components must undergo inspection before leaving the factory. During this inspection, the quality of the lens and voice coil motor are typically tested separately, but not when they work together. Specifically, it's impossible to verify the optical performance of the lens when the voice coil motor drives the lens. Summary of the Invention

[0004] In view of this, the present application provides a fixing structure for detecting the optical performance of a lens when a voice coil motor drives the lens to move.

[0005] In addition, it is necessary to provide a detection device with the fixing structure.

[0006] The present application provides a fixed structure, including a first carrier plate, a second carrier plate and an electronic connector. The first carrier plate has a first through hole. The second carrier plate can be movably connected to the first carrier plate, and the second carrier plate has a first accommodating groove, the first accommodating groove is used to accommodate a voice coil motor with a lens, and the second carrier plate is also provided with a second through hole passing through the bottom of the first accommodating groove, and the central axes of the first through hole and the second through hole are on the same straight line; the electronic connector is provided on the second carrier plate, the electronic connector is used to be electrically connected to the voice coil motor, and the electronic connector is also used to connect to an external power supply.

[0007] In some embodiments, a positioning protrusion is provided on the surface of the second carrying plate facing the first carrying plate; a second receiving groove for accommodating the second carrying plate is provided on the first carrying plate, the first through hole is located at the bottom of the second receiving groove, and the first carrying plate forms a first surface and a second surface at the bottom and inner side wall of the second receiving groove, respectively; the first carrying plate has a first protrusion and a second protrusion protruding from the first surface, a first gap is left between the first protrusion and the second protrusion, and the positioning protrusion is accommodated in the first gap.

[0008] In some embodiments, a third accommodating groove is further provided on the second carrier plate, the third accommodating groove is communicated with the first accommodating groove, and the electronic connector is accommodated in the third accommodating groove.

[0009] In some embodiments, a first coil is disposed on the first protrusion, and a second coil is disposed on the second protrusion. Both the first coil and the second coil are electrically connected to the electronic connector.

[0010] In some embodiments, the electronic connector has a first pin and a second pin, the first pin is connected to the first coil, and the second pin is connected to the second coil.

[0011] In some embodiments, the second supporting plate is provided with a first mounting hole and a second mounting hole passing through the bottom of the third accommodating groove, the first pin is connected to the first coil through the first mounting hole, and the second pin is connected to the second coil through the second mounting hole.

[0012] In some embodiments, the electronic connector further includes two third pins, one end of the third pin is located in the first receiving groove and is electrically connected to the voice coil motor.

[0013] In some embodiments, the second carrier plate also includes an annular flange extended from the inner wall of the second through hole, the annular flange includes a connecting portion connected to the inner wall of the second through hole and a boss protruding from the surface of the connecting portion, the boss is used to support the voice coil motor, and the height of the boss extending out of the connecting portion is less than the depth of the first accommodating groove.

[0014] In some embodiments, a second gap is left between the boss and the inner side wall of the first receiving groove, and the third pin is received in the second gap.

[0015] The present application also provides a detection device using the fixed structure, including an optical detection module and a detection platform, and also including the fixed structure, the fixed structure is arranged on the detection platform, and the optical detection module is arranged above the fixed structure.

[0016] In this application, a voice coil motor with a lens is placed in a first receiving groove. The voice coil motor is electrically connected to an electronic connector. The power supply is electrically connected to the voice coil motor through the electronic connector. When the power supply is turned on, the voice coil motor drives the lens to move. At this time, light passes through the lens of the lens through the first through hole and the second through hole to reach the photosensitive surface of the image sensor, completing the optical performance test of the lens. The fixed structure of this application improves the method of testing the voice coil motor and lens separately, and improves the production efficiency of testing the voice coil motor and lens. At the same time, in this application, the first carrier plate and the second carrier plate are movably connected. Second carrier plates of different specifications can be set according to production requirements to meet the needs of voice coil motors with lenses of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of a fixed structure provided in an embodiment of the present application.

[0018] Figure 2 yes Figure 1 An exploded view of a fixing structure in an embodiment is shown.

[0019] Figure 3 yes Figure 1 A schematic structural diagram of the second supporting plate of the fixed structure in the embodiment.

[0020] Figure 4 yes Figure 1 The figure shows a cross-sectional view of the fixing structure along IV-IV in one embodiment.

[0021] Figure 5 yes Figure 1 An exploded view of a fixing structure in an embodiment is shown from another perspective.

[0022] Figure 6 It is a three-dimensional schematic diagram of a fixed structure detection device for an implementation application of the present application.

[0023] Description of main component symbols

[0024] Fixed structure 100

[0025] The first carrier plate 10

[0026] First through hole 11

[0027] Second accommodating groove 12

[0028] First surface 121

[0029] Second surface 122

[0030] First protrusion 13

[0031] Second protrusion 14

[0032] First gap 15

[0033] First coil 16

[0034] Second coil 17

[0035] Second carrier plate 20

[0036] First accommodating groove 21

[0037] Second through hole 22

[0038] Positioning protrusion 23

[0039] The third accommodating groove 24

[0040] First mounting hole 25

[0041] Second mounting hole 26

[0042] Annular flange 27

[0043] Connecting portion 271

[0044] Boss 272

[0045] Second gap 28

[0046] Scale mark 29

[0047] Electronic connector 30

[0048] First pin 31

[0049] Second pin 32

[0050] The third pin 33

[0051] Voice Coil Motor 200

[0052] Wire post 201

[0053] Lens 300

[0054] Detection device 400

[0055] Optical detection module 401

[0056] Detection Platform 402

[0057] The following specific implementation methods will be combined with the above-mentioned Figure 1-6 Further explain this application. DETAILED DESCRIPTION

[0058] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0059] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. When an element is referred to as being "disposed on" another element, it may be directly disposed on the other element or there may be an intermediate element.

[0060] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0061] In order to further illustrate the technical means and effects adopted by this application to achieve the intended purpose, the following detailed description of this application is made in conjunction with the accompanying drawings and implementation methods.

[0062] See also Figure 1 、 Figure 2 and Figure 3 , an embodiment of the present application provides a fixed structure 100, the fixed structure 100 includes a first carrier plate 10, a second carrier plate 20 and an electronic connector 30, the second carrier plate 20 is movably arranged on the first carrier plate 10, and a first receiving groove 21 is provided on the second carrier plate 20 for receiving the voice coil motor 200 with the lens 300. A second receiving groove 12 is provided on the first carrier plate 10, and the second carrier plate 20 is placed in the second receiving groove 12. The second carrier plate 20 also has a third receiving groove 24, and the electronic connector 30 is placed in the third receiving groove 24, and is electrically connected between the voice coil motor 200 and an external power supply (not shown). The voice coil motor 200 is connected to the external power supply through the electronic connector 30, so that the voice coil motor 200 drives the lens 300 to move, which is convenient for the optical detection module 401 (in Figure 6 ) detects the optical performance of the lens 300 during movement.

[0063] See Figure 2 and Figure 4The first carrier plate 10 is provided with a first through hole 11 penetrating the first carrier plate 10 at the bottom of the second receiving groove 12. The first carrier plate 10 forms a first surface 121 and a second surface 122 at the bottom and inner side wall of the second receiving groove 12, respectively. The first carrier plate 10 has a first protrusion 13 and a second protrusion 14 protruding from the first surface 121. The edge of the first protrusion 13 away from the second surface 122 is flush with the edge of the first through hole 11. The second protrusion 14 is arranged at the connection between the second surface 122 and the first surface 121 of the first carrier plate 10. A first gap 15 is left between the first protrusion 13 and the second protrusion 14. In this embodiment, the first protrusion 13 and the second protrusion 14 are both arranged in an annular shape, but this is not a limitation.

[0064] See Figure 2 and Figure 4 A first coil 16 is provided on the first protrusion 13, and a second coil 17 is provided on the second protrusion 14. The first coil 16 and the second coil 17 are positive and negative coils respectively. The first coil 16 and the second coil 17 are both electrically connected to the electronic connector 30, wherein the first coil 16 and the second coil 17 can both be made of metal conductive materials, conductive rubber, wire glue, conductive plastic and composite materials. The setting of the first coil 16 and the second coil 17 ensures the effectiveness of the power supply to the second carrier plate 20 when the first carrier plate 10 is connected to the second carrier plate 20, increases the power supply, improves the lighting rate, and further improves the test effect of the fixed structure 100. The material of the first carrier plate 10 is an insulating material. Among them, the shape of the first carrier plate 10 can be set to a shape and size that matches the optical detection device 400.

[0065] See Figure 4 and Figure 5 The second carrier plate 20 has a positioning protrusion 23 on its surface facing the first carrier plate 10. The positioning protrusion 23 is received in the first gap 15 of the first carrier plate 10, thereby achieving a detachable connection between the second carrier plate 20 and the first carrier plate 10. In this embodiment, the positioning protrusion 23 is annular, which makes the connection between the second carrier plate 20 and the first carrier plate 10 more stable.

[0066] See Figure 3 and Figure 4The second carrier plate 20 also defines a second through-hole 22 extending through the bottom of the first accommodating groove 21. The central axis of the second through-hole 22 is aligned with the central axis of the first through-hole 11. A voice coil motor 200 with a lens 300 is placed in the first accommodating groove 21. An external power source provides power to the voice coil motor 200 via the electronic connector 30, causing the voice coil motor 200 to move the lens 300. An optical detection module 401 is located above the first through-hole 11 and the second through-hole 22 and performs optical performance testing of the moving lens 300 through the first through-hole 11 and the second through-hole 22. Furthermore, the fixed structure 100 provided in the present application can also independently test the optical performance of the lens 300. Specifically, the lens 300 is placed in the first accommodating groove 21, with the lens element of the lens 300 aligned with the first through-hole 11, and the optical performance of the lens 300 is tested using the optical detection module 401. In practical applications, the second carrier plate 20 of different specifications can be provided according to production requirements to facilitate the testing of voice coil motors 200 and lenses 300 of different specifications, thereby realizing multiple uses of the first carrier plate 10 .

[0067] See Figure 3 、 Figure 4 and Figure 5 The second carrier plate 20 also includes an annular flange 27 extending from the inner wall of the second through hole 22. The annular flange 27 includes a connecting portion 271 connected to the inner wall of the second through hole 22 and a boss 272 protruding from the surface of the connecting portion 271. The boss 272 is used to support the voice coil motor 200. The height T of the boss 272 extending from the connecting portion is less than the depth H of the first accommodating groove 21. Such a configuration is conducive to placing the voice coil motor 200 more firmly in the first accommodating groove 21. A second gap 28 is left between the boss 272 and the inner wall of the first accommodating groove 21. The voice coil motor 200 has a wire post 201 for connecting to the electronic connector 30, and the wire post 201 is placed in the second gap 28.

[0068] See Figure 3 、 Figure 4 and Figure 5 The first receiving groove 21 on the second carrier plate 20 communicates with the third receiving groove 24. In this application, the electronic connector 30 is specifically a PIN connector, comprising a first pin 31, a second pin 32, and a third pin 33. The third pin 33 is partially located within the second gap 28 and connects to the lead pin 201 of the voice coil motor 200, thereby electrically connecting the voice coil motor 200 to the electronic connector 30. In this embodiment, two third pins 33 are provided, correspondingly connecting to the two lead pins 201 of the voice coil motor 200.

[0069] See Figure 3 、 Figure 4 and Figure 5The second carrier plate 20 also defines a first mounting hole 25 and a second mounting hole 26 extending through the bottom of the third receiving slot 24. A first pin 31 of the electronic connector 30 passes through the first mounting hole 25 to electrically connect to the first coil 16, while a second pin 32 passes through the second mounting hole 26 to electrically connect to the second coil 17. The first coil 16 and the second coil 17 are powered by an external power source connected to the electronic connector 30. When the external power source is activated, the electronic connector 30 energizes the voice coil motor 200, thereby driving the voice coil motor 200 and moving the lens 300. The external power source can be connected to a digital power controller to control the driving current supplied to the voice coil motor 200. This allows testing of the optical performance of the voice coil motor 200 driving the lens 300 under different driving currents. In other embodiments, the positions of the electronic connector 30 and the first, second, and third pins 31, 32, and 33 on the electronic connector 30 can be adjusted according to production requirements.

[0070] See Figure 3 The second carrier plate 20 is an annular disc, and a scale line 29 is provided on the edge of the second carrier plate 20. The scale line 29 facilitates the accurate placement of the voice coil motor 200 in the first receiving groove 21. This arrangement improves the accuracy of the voice coil motor 200 and the lens 300 test.

[0071] The fixing structure 100 is applicable to voice coil motors 200 of central, open-loop, closed-loop, optical image stabilization, and other types.

[0072] See Figure 6 The fixed structure 100 can be applied to various detection devices 400 for testing camera modules, such as the Pro optical detection device platform, the HR optical detection device platform, and other lens optical detection instruments. The detection device 400 also includes an optical detection module 401 and a detection platform 402. The fixed structure 100 is set on the detection platform 402, and the optical detection module 401 is set above the fixed structure 100. The voice coil motor 200 with the lens 300 is placed on the fixed structure 100. The light from the optical detection module 401 passes through the lens 300 and reaches the photosensitive surface of the image sensor, completing the optical performance test of the lens 300.

[0073] In this application, a voice coil motor 200 with a lens 300 is placed in the first receiving groove 21. The voice coil motor 200 is electrically connected to the electronic connector 30, and an external power supply is electrically connected to the voice coil motor 200 through the electronic connector 30. With the external power supply, the voice coil motor 200 drives the lens 300 to move, and light passes through the first through-hole 11 and the second through-hole 22 to the photosensitive surface of the image sensor, completing the optical performance test of the moving lens 300. The fixing structure 100 of this application improves the method of separately testing the voice coil motor 200 and lens 300, thereby increasing the production efficiency of testing voice coil motors and lenses 300. Furthermore, in this application, the flexible connection between the first carrier plate 10 and the second carrier plate 20 allows for different specifications of the second carrier plate 20 to be set according to production requirements to accommodate different specifications of voice coil motors 200 and lenses 300.

[0074] The above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A fixing structure, characterized in that: The fixed structure includes: A first carrying plate having a first through hole; a second carrier plate movably connected to the first carrier plate, the second carrier plate having a first accommodating groove for accommodating the voice coil motor with a lens, and the second carrier plate further having a second through hole extending through the bottom of the first accommodating groove, wherein the central axes of the first through hole and the second through hole are collinear; an electronic connector, disposed on the second carrier plate, the electronic connector being used to electrically connect to the voice coil motor and further being used to connect to an external power source; The first carrier plate is provided with a second accommodating groove for accommodating the second carrier plate, the first through hole is located at the bottom of the second accommodating groove, and the first carrier plate forms a first surface and a second surface at the bottom and inner wall of the second accommodating groove respectively; the first carrier plate has a first protrusion and a second protrusion protruding from the first surface, a first coil is provided on the first protrusion, and a second coil is provided on the second protrusion, the first coil and the second coil are both electrically connected to the electronic connector, and the electronic connector has a first pin and a second pin, the first pin is connected to the first coil, and the second pin is connected to the second coil.

2. The fixing structure according to claim 1, wherein: A positioning protrusion is provided on the surface of the second carrier plate facing the first carrier plate; A first gap is left between the first protrusion and the second protrusion, and the positioning protrusion is accommodated in the first gap.

3. The fixing structure according to claim 1, wherein: The second carrier plate is further provided with a third accommodating groove, the third accommodating groove is communicated with the first accommodating groove, and the electronic connector is accommodated in the third accommodating groove.

4. The fixing structure according to claim 3, wherein: The second supporting plate is provided with a first mounting hole and a second mounting hole which pass through the bottom of the third accommodating groove. The first pin passes through the first mounting hole to be connected to the first coil, and the second pin passes through the second mounting hole to be connected to the second coil.

5. The fixing structure according to claim 1, wherein: The electronic connector further includes two third pins, one end of which is located in the first accommodating groove and is electrically connected to the voice coil motor.

6. The fixing structure according to claim 5, wherein: The second carrier plate also includes an annular flange extended from the inner wall of the second through hole, and the annular flange includes a connecting portion connected to the inner wall of the second through hole and a boss protruding from the surface of the connecting portion. The boss is used to support the voice coil motor, and the height of the boss extending out of the connecting portion is less than the depth of the first accommodating groove.

7. The fixing structure according to claim 6, wherein: A second gap is left between the boss and the inner side wall of the first accommodating groove, and the third pin is accommodated in the second gap.

8. A detection device, comprising an optical detection module and a detection platform, characterized in that: It also includes a fixing structure according to any one of claims 1 to 7, wherein the fixing structure is arranged on the detection platform, and the optical detection module is arranged above the fixing structure.

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