Optical center centering device for camera module and relay lens and camera module focusing test device

Abstract

The utility model discloses a camera module and relay lens optical center centering device and a camera module focusing test device.The camera module and relay lens optical center centering device comprises a light-transmitting plate and a jig used for supporting the light-transmitting plate and a relay lens, the light-transmitting plate is provided with a circle center mark, the jig is provided with a through hole, and the through hole is communicated with the relay lens. When the light-transmitting plate is positioned and supported on the jig, the circle center mark of the light-transmitting plate is located on the first straight line, and when the relay lens is positioned and supported on the jig, the circle center of the relay lens is also located on the first straight line. The camera module focusing test device comprises a bottom plate, a loading table used for supporting a module jig and a centering device used for optical centers of the camera module and a relay lens, the loading table is installed on the bottom plate, the jig is installed on a first support, the first support is installed on the bottom plate, and the jig is located above the loading table. According to the utility model, the optical center control in the Z-axis direction can be satisfied, the focusing is realized, and the high-precision requirement of customers is satisfied.

Description

Technical Field

[0001] The utility model relates to the technical field of camera modules, and in particular to a camera module and a relay mirror optical center alignment device and a camera module focus testing device. Background Art

[0002] For the manual AA products currently manufactured, due to the high requirements for the optical center offset (normally 25um), how to identify the physical center of the relay mirror has become an urgent problem to be solved in this field.

[0003] Moreover, some modules currently have high requirements for precision and need to be supported by manual AA process. How to ensure the offset of the optical center is particularly important. Since the current environment does not allow it, the optical center is basically not controlled and only the offset of the physical structure is considered. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art, and proposes a device for aligning the optical center of a camera module and a relay lens and a focus test device for the camera module, which can make the center of the module and the center of the relay lens in the same straight line, can meet the optical center control in the Z-axis direction, achieve focusing, and meet the high-precision requirements of customers.

[0005] The technical solution of the utility model is implemented as follows: the utility model discloses a device for aligning the optical center of a camera module and a relay lens, comprising a light-transmitting plate and a jig for supporting the light-transmitting plate and the relay lens, wherein the light-transmitting plate is provided with a center mark, and the jig is provided with a through hole. When the light-transmitting plate is positioned and supported on the jig, the center mark of the light-transmitting plate is located on a first straight line, and when the relay lens is positioned and supported on the jig, the center of the relay lens is also located on the first straight line.

[0006] Furthermore, the first straight line and the axis line of the through hole are located on the same straight line.

[0007] Furthermore, the light-transmitting plate is provided with a first marking line extending along a first direction and a second marking line extending along a second direction, the first direction is perpendicular to the second direction, and the perpendicular intersection of the first marking line and the second marking line is a circle center mark;

[0008] or / and,

[0009] The light-transmitting plate is an acrylic plate.

[0010] Furthermore, a step for supporting the light-transmitting plate and the relay mirror is provided in the through hole of the fixture.

[0011] Further, the outer wall of the fixture is a stepped cylindrical shape;

[0012] or / and,

[0013] The outer wall of the fixture is provided with radial fixing holes.

[0014] The utility model also discloses a camera module focus test device, including a base plate, a loading platform for supporting a module fixture, and the optical center alignment device for the camera module and the relay mirror as described above, wherein the loading platform is mounted on the base plate, the fixture is mounted on a first bracket, the first bracket is mounted on the base plate, and the fixture is located above the loading platform.

[0015] Furthermore, the first bracket includes a first lifting platform and a first Y-axis linear module, the first Y-axis linear module is installed on the bottom plate along the Y-axis direction, the first lifting platform is installed on the first Y-axis linear module, and the fixture is installed on the first lifting platform.

[0016] Furthermore, a slide table extending along the X-axis direction is provided on the bottom plate, and a second bracket is also installed on the bottom plate, the second bracket is located on the side of the slide table, and a light source is installed on the second bracket, and the light source is located above the slide table.

[0017] Furthermore, the second bracket includes a second lifting platform and a second Y-axis linear module, the second Y-axis linear module is installed on the base plate along the Y-axis direction, the second lifting platform is installed on the second Y-axis linear module, the light source is installed on the light source bracket, and the light source bracket is connected to the second lifting platform.

[0018] Furthermore, a test box is supported on the loading platform, and the module fixture is fixed on the upper end of the test box.

[0019] The test box is provided with a female header, the module fixture is fixed on the upper end surface of the adapter plate, and a pin header is fixed on the lower end surface of the adapter plate. The pin header at the lower end of the adapter plate is inserted into the female header of the test box. After the camera module is positioned on the module fixture, it is electrically connected to the probe pads on the adapter board through a number of probes installed on the module fixture, and the probe pads on the adapter board are electrically connected to the pin headers accordingly.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] Since the optical center alignment device for the camera module and the relay mirror of the utility model includes a light-transmitting plate and a fixture for supporting the light-transmitting plate and the relay mirror, the light-transmitting plate is provided with a circle center mark, and the fixture is provided with a through hole, when the light-transmitting plate is positioned and supported on the fixture, the circle center mark of the light-transmitting plate is located on the first straight line, and when the relay mirror is positioned and supported on the fixture, the circle center of the relay mirror is also located on the first straight line, when the module is first fine-tuned to the optical center through the light-transmitting plate, after debugging is clear, it is replaced with a normally used relay mirror for focus testing. The utility model can meet the optical center control in the Z-axis direction, achieve focusing, meet the high-precision requirements of customers, reduce errors, standardize operations, and improve operating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic structural diagram of a camera module focus testing device provided in one embodiment of the utility model.

[0023] Figure 2 A schematic structural diagram of a camera module focus testing device provided in one embodiment of the utility model.

[0024] In the accompanying drawings, 1 is a base plate, 11 is a slide, 2 is a loading platform, 3 is a first Y-axis linear module, 4 is a first lifting platform, 5 is a fixture, 51 is a step, 52 is a through hole, 6 is a second Y-axis linear module, 7 is a second lifting platform, and 8 is a light source bracket. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0026] Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Multiple means two or more. Similarly, words such as "one", "one" or "the" do not indicate quantity restrictions, but indicate the existence of at least one. Words such as "include" or "include" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described target changes, the relative positional relationship may also change accordingly.

[0027] In each of the accompanying drawings, identical elements are represented by similar reference numerals. For the sake of clarity, the various parts in the accompanying drawings are not all drawn to scale. In addition, some well-known parts may not be shown in the drawings.

[0028] Many specific details of the present invention are described below, such as the structure, materials, dimensions, processing techniques and technologies of the components, so as to more clearly understand the present invention. However, as those skilled in the art will appreciate, the present invention may be implemented without following these specific details.

[0029] See also Figure 1 The embodiment of the utility model discloses a device for aligning the optical center of a camera module and a relay lens, including a light-transmitting plate and a fixture 5 for supporting the light-transmitting plate and the relay lens, wherein a center mark is provided on the light-transmitting plate, and the fixture 5 is provided with a through hole 52. When the light-transmitting plate is positioned and supported on the fixture 5, the center mark of the light-transmitting plate is located on a first straight line, and when the relay lens is positioned and supported on the fixture 5, the center of the relay lens is also located on the first straight line.

[0030] Furthermore, the first straight line and the axis line of the through hole 52 are located on the same straight line.

[0031] In some embodiments, the light-transmitting plate is an acrylic plate. Of course, the light-transmitting plate of the present invention is not limited to an acrylic plate, but may also be a transparent plate made of other materials through which light can pass.

[0032] Furthermore, a first marking line extending along a first direction and a second marking line extending along a second direction are provided on the light-transmitting plate, the first direction is perpendicular to the second direction, and the perpendicular intersection of the first marking line and the second marking line is a circle center mark.

[0033] Furthermore, a step 51 for supporting the light-transmitting plate and the relay mirror is provided in the through hole 52 of the fixture 5 .

[0034] For example, when the light-transmitting plate is supported on the step 51 of the fixture 5 , the outer wall of the light-transmitting plate is gap-matched with the hole wall of the through hole 52 of the fixture 5 .

[0035] Of course, the step 51 may not be provided in the through hole 52 of the fixture 5 .

[0036] The structure and aperture of the jig 5 are set as needed. It only requires that the light-transmitting plate and the relay lens can be positioned and supported on the jig 5 (such as the light-transmitting plate and the relay lens are directly placed on the jig 5), and when the light-transmitting plate is positioned and supported on the jig 5, the center mark of the light-transmitting plate is located on the first straight line, and when the relay lens is positioned and supported on the jig 5, the center mark of the relay lens is also located on the first straight line.

[0037] The light-transmitting plate can be cylindrical. Of course, the outer wall of the light-transmitting plate can also be a stepped cylinder, such as the small diameter section of the light-transmitting plate is gap-matched with the hole wall of the through hole 52 of the fixture 5, and the outer diameter of the large diameter section of the light-transmitting plate is larger than the hole diameter of the through hole 52 of the fixture 5.

[0038] Furthermore, the outer wall of the fixture 5 is a stepped cylindrical shape.

[0039] Furthermore, a radial fixing hole is provided on the outer wall of the fixture 5 for cooperating with a screw. The fixing hole is used for fixed connection with the first bracket.

[0040] The device for aligning the optical center of the camera module and the relay lens of the utility model comprises a fixture 5 for placing the relay lens and a transparent acrylic plate, on which two diameter marking lines X and Y are provided, and the middle point is the center of the relay lens. When the module is aligned with the optical center through the acrylic plate, fine adjustment is first performed, and after the adjustment is clear, the normally used relay lens is replaced to perform a focus test. Through the centering device, the utility model can make the center of the module and the center of the relay lens in the same straight line, ensuring the deviation in the Z-axis direction.

[0041] Embodiment 2

[0042] An embodiment of the utility model discloses a camera module focus test device, comprising a base plate 1, a loading platform 2 for supporting a module fixture 5, and a device for aligning the optical center of the camera module and the relay mirror as described in Example 1, wherein the loading platform 2 is mounted on the base plate 1, the fixture 5 is mounted on a first bracket, the first bracket is mounted on the base plate 1, and the fixture 5 is located above the loading platform 2.

[0043] Furthermore, the first bracket includes a first lifting platform 4 and a first Y-axis linear module 3, the first Y-axis linear module 3 is installed on the base plate 1 along the Y-axis direction, the first lifting platform 4 is installed on the first Y-axis linear module 3, and the fixture 5 is installed on the first lifting platform 4.

[0044] Furthermore, a slide 11 extending along the X-axis direction is provided on the base plate 1 , and a second bracket is also installed on the base plate 1 , the second bracket is located on the side of the slide 11 , and a light source is installed on the second bracket, and the light source is located above the slide 11 .

[0045] Furthermore, the second bracket includes a second lifting platform 7 and a second Y-axis linear module 6. The second Y-axis linear module 6 is installed on the base plate 1 along the Y-axis direction. The second lifting platform 7 is installed on the second Y-axis linear module 6. The light source is installed on the light source bracket 8, and the light source bracket 8 is connected to the second lifting platform 7.

[0046] The first lifting platform 4 and the second lifting platform 7 can be manually adjusted lifting platforms, or can be automatic lifting platforms (such as driven by a motor). The first lifting platform 4 and the second lifting platform 7 of this embodiment are manually adjusted lifting platforms.

[0047] The first Y-axis linear module 3 and the second Y-axis linear module 6 can be manually adjusted linear modules or linear modules driven by a motor or the like. The first Y-axis linear module 3 and the second Y-axis linear module 6 of this embodiment are manually adjusted linear modules. And the first Y-axis linear module 3 and the second Y-axis linear module 6 are provided with scale marks to facilitate the control of displacement.

[0048] Furthermore, a test box is supported on the loading platform 2, and the module fixture 5 is fixed on the upper end of the test box.

[0049] Furthermore, the test box is provided with a female header, the module fixture 5 is fixed on the upper end surface of the adapter plate, and a pin header is fixed on the lower end surface of the adapter plate. The pin header at the lower end of the adapter plate is inserted into the female header of the test box. After the camera module is positioned on the module fixture 5, it is electrically connected to the probe pads on the adapter board through a number of probes installed on the module fixture 5, and the probe pads on the adapter board are electrically connected to the pin headers accordingly.

[0050] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A device for aligning the optical center of a camera module and a relay lens, characterized in that: It includes a light-transmitting plate and a jig for supporting the light-transmitting plate and a relay lens, wherein the light-transmitting plate is provided with a center mark, and the jig is provided with a through hole. When the light-transmitting plate is positioned and supported on the jig, the center mark of the light-transmitting plate is located on a first straight line, and when the relay lens is positioned and supported on the jig, the center of the relay lens is also located on the first straight line.

2. The device for aligning the optical center of a camera module and a relay lens according to claim 1, characterized in that: The first straight line and the axis line of the through hole are located on the same straight line.

3. The optical center alignment device for a camera module and a relay lens according to claim 1, characterized in that: The light-transmitting plate is provided with a first marking line extending along a first direction and a second marking line extending along a second direction, the first direction is perpendicular to the second direction, and the perpendicular intersection of the first marking line and the second marking line is a circle center mark; or / and, The light-transmitting plate is an acrylic plate.

4. The optical center alignment device for a camera module and a relay lens according to claim 1, characterized in that: A step for supporting the light-transmitting plate and the relay mirror is arranged in the through hole of the fixture.

5. The device for aligning the optical center of a camera module and a relay lens according to claim 1, characterized in that: The outer wall of the fixture is a stepped cylindrical shape; or / and, The outer wall of the fixture is provided with radial fixing holes.

6. A camera module focus test device, characterized in that: It includes a base plate, a loading platform for supporting a module fixture, and a device for aligning the optical center of a camera module and a relay mirror as described in claim 1, wherein the loading platform is mounted on the base plate, the fixture is mounted on a first bracket, the first bracket is mounted on the base plate, and the fixture is located above the loading platform.

7. The camera module focus test device according to claim 6, characterized in that: The first bracket includes a first lifting platform and a first Y-axis linear module. The first Y-axis linear module is installed on the bottom plate along the Y-axis direction. The first lifting platform is installed on the first Y-axis linear module. The fixture is installed on the first lifting platform.

8. The camera module focus test device according to claim 6, characterized in that: The bottom plate is provided with a slide extending along the X-axis direction, and a second bracket is also installed on the bottom plate, the second bracket is located at the side of the slide, and a light source is installed on the second bracket, and the light source is located above the slide.

9. The camera module focus test device according to claim 8, characterized in that: The second bracket includes a second lifting platform and a second Y-axis linear module. The second Y-axis linear module is installed on the base plate along the Y-axis direction. The second lifting platform is installed on the second Y-axis linear module. The light source is installed on the light source bracket. The light source bracket is connected to the second lifting platform.

10. The camera module focus test device according to any one of claims 6 to 9, characterized in that: A test box is supported on the loading platform, and the module fixture is fixed on the upper end of the test box.

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