CN222544970U - Plane center calibration device and plane center calibration system - Google Patents

Abstract

The present application relates to a plane center calibration device and a plane center calibration system. The plane center calibration device is arranged on a test device and is located between a test board and a test fixture. The plane center calibration device includes: a base having a positioning plane with a through hole arranged on the positioning plane; a support member arranged on the positioning plane of the base; a moving member arranged on the support member; and a camera arranged on the moving member, with the shooting end of the camera facing the test board or the test fixture, for shooting the crosshairs of the test board or the test fixture; wherein the center of the crosshairs of the test board or the test fixture shot by the camera coincides with the center of the crosshairs of the camera itself, so as to calibrate the center position of the test board or the test fixture. Compared with the prior art, the present application can improve the accuracy of debugging and calibrating test equipment and reduce the test error of module products.

Description

Plane center calibration device and plane center calibration system

Technical Field

The application relates to the technical field of module manufacturing, in particular to a plane center calibration device and a plane center calibration system.

Background

After the module is assembled, the module needs to be functionally tested according to the requirements of clients. Because the module belongs to an optical high-precision high-tech product, the requirement on the test precision is very high. In order to reduce errors of test modules of the test equipment, calibration of the test equipment becomes an indispensable task. The aim of debugging the test equipment is to ensure that the test equipment reaches the space position of each test station and the environment is consistent, so that the test error of the module product can be reduced to the minimum.

In the prior art, the position of the test equipment is calibrated by only using the displacement platform and the cross laser singly, and whether the position of the test equipment is correct or not is observed by naked eyes. The debugging and calibrating method has the following defects that as the vision of human eyes is different, the difference exists when naked eyes judge whether the center of the cross laser is aligned with the center of the cross line of the testing equipment, and the line thickness of the cross laser is generally 1mm-2mm, so that errors exist when the human eyes observe the cross laser, and in the process of debugging the testing equipment, whether the debugging accuracy is correct cannot be judged, so that the testing error of a module product is larger.

Disclosure of utility model

The application provides a plane center calibration device and a plane center calibration system, which are used for solving the technical problem that in the process of the existing debugging and testing equipment, whether the debugging accuracy is correct or not cannot be judged, so that the testing error of a module product is larger.

In a first aspect, an embodiment of the application provides a plane center calibration device, which is located between a test chart board and a test fixture, and comprises a base, a supporting piece, a moving piece and a camera, wherein the base is provided with a positioning plane, a through hole is formed in the positioning plane, the supporting piece is arranged on the positioning plane of the base, the moving piece is arranged on the supporting piece, the camera is arranged on the moving piece, a shooting end of the camera faces the test chart board or the test fixture and is used for shooting a cross line of the test chart board or the test fixture, and the center of the cross line of the test chart board or the test fixture shot by the camera coincides with the center of the cross line of the camera so as to calibrate the center position of the test chart board or the test fixture.

In one possible implementation manner, the supporting piece comprises a supporting cylinder and a fixed ring, wherein the supporting cylinder or the fixed ring is detachably connected with the positioning plane of the base, the supporting cylinder is provided with a first end face and a second end face which are oppositely arranged, the fixed ring is arranged on the first end face of the supporting cylinder, the fixed ring and the supporting cylinder are coaxially arranged, and the moving piece is movably arranged on the inner peripheral side of the supporting cylinder.

In one possible implementation manner, the first end face of the supporting cylinder is provided with a plurality of first connecting holes, one side of the fixing ring, which faces the supporting cylinder, is provided with a plurality of second connecting holes in one-to-one correspondence with the first connecting holes, one side of the fixing ring, which faces away from the supporting cylinder, is provided with a plurality of first grooves in one-to-one correspondence with the second connecting holes, and the supporting cylinder is connected with the fixing ring through a first fastener.

In one possible implementation manner, a first convex column is arranged on one side, away from the supporting cylinder, of the fixing ring, a first clamping groove connected with the first convex column in a clamping manner is arranged on the positioning plane of the base, or a second clamping groove is arranged on one side, away from the supporting cylinder, of the fixing ring, and a second convex column connected with the second clamping groove in a clamping manner is arranged on the positioning plane of the base.

In one possible implementation manner, the second end surface of the supporting cylinder is provided with a third convex column connected with the first clamping groove in a clamping way, or the second end surface of the supporting cylinder is provided with a third clamping groove connected with the second convex column in a clamping way.

In one possible implementation mode, the moving piece comprises a sliding ring, the sliding ring and the supporting cylinder are coaxially arranged and are in sliding connection, the center of the sliding ring coincides with the optical center of the camera, a positioning plate is arranged on the sliding ring, a slide way is arranged on the peripheral side of the supporting cylinder along the axis direction of the supporting cylinder, and the positioning plate is connected with the slide way through a second fastening piece.

In one possible implementation mode, a plurality of positioning plates are arranged and are uniformly distributed on the periphery of the sliding ring, a plurality of slide ways are arranged in one-to-one correspondence with the positioning plates and are uniformly distributed on the periphery of the supporting cylinder, a fixing hole is formed in any one positioning plate, and one end of a second fastening piece penetrates through the slide ways and is fixedly connected with the fixing hole of the positioning plate.

In one possible implementation manner, the moving piece further comprises a fixed plate, a first connecting plate and a second connecting plate, wherein the fixed plate is arranged on the first connecting plate and used for fixing the camera, the first connecting plate and the second connecting plate are oppositely arranged and are arranged on the same side of the sliding ring, a first positioning groove is formed in one side, facing the second connecting plate, of the first connecting plate, a second positioning groove is formed in one side, facing the first connecting plate, of the second connecting plate, and the first positioning groove and the second positioning groove are combined to form a circular positioning groove and used for limiting movement of the camera in the horizontal direction.

In a second aspect, the application provides a planar center calibration system comprising a test chart board, a test jig arranged opposite to the test chart board, and a planar center calibration device as described above.

In one possible implementation, the side of the test board facing the camera of the planar center calibration device is provided with a first test plane, a first cross line is arranged on the first test plane, the side of the test jig facing the camera of the planar center calibration device is provided with a second test plane, and a second cross line is arranged on the second test plane.

Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:

According to the plane center calibration device and the plane center calibration system, when the test equipment needs to be calibrated, the base, the test drawing board and the test jig are respectively installed on the test equipment. Before calibration, the parallelism between the test drawing board and the positioning plane of the base or the parallelism between the test jig and the positioning plane of the base must be within 0.005 mm. Firstly, the shooting end of a camera faces a test drawing board and is arranged on a moving part, a supporting part is arranged on a positioning plane of a base, the focusing range of the camera can be roughly adjusted by adjusting the position of the moving part on the supporting part, meanwhile, the image shot by the camera on external display equipment is observed, image software can simultaneously display the cross line of the test drawing board and the cross line of the camera, and when the definition of the image shot by the camera reaches the preset definition, the relative position of the moving part and the supporting part is fixed. When the center of the cross line of the test chart is deviated from the center of the cross line of the camera, the XYR shaft displacement platform for fixing the test chart can be adjusted until the center of the cross line of the test chart is consistent with the center of the cross line of the camera, and the calibration of the test chart is completed. And then, the supporting piece is turned and arranged on the positioning plane of the base, so that the shooting end of the camera faces the test jig, the calibration process is the same as that of the test drawing board, and when the cross line center of the test jig deviates from the cross line center of the camera, the XYR shaft displacement platform for fixing the test jig can be adjusted until the cross line center of the test jig is consistent with the cross line center of the camera, and the calibration of the test jig is completed. After the calibration of the test drawing board and the test jig is completed, the center alignment degree of the test drawing board, the test jig and the base can reach within 0.01 mm. By adopting the plane center calibration device, the multi-plane center calibration can be realized, and compared with the prior art, the plane center calibration device provided by the application can improve the accuracy of debugging calibration test equipment and reduce the test error of a module product through the high accuracy of an image shot by a camera.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.

In order to more clearly illustrate the embodiments of the application or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.

FIG. 1 is a schematic diagram of a plane center calibration device according to an embodiment of the present application;

FIG. 2 is a schematic view of the operation state of the planar center calibration apparatus shown in FIG. 1;

FIG. 3 is a schematic view of the structure of the support of the planar center calibration apparatus shown in FIG. 1;

FIG. 4 is a schematic exploded view of the structure of the support shown in FIG. 3;

FIG. 5 is a schematic view of the base of the planar center calibration apparatus shown in FIG. 1;

FIG. 6 is a top view of the planar center calibration apparatus shown in FIG. 1;

FIG. 7 is a schematic structural diagram of a planar center calibration apparatus according to another embodiment of the present application;

FIG. 8 is a schematic exploded view of the moving member of the planar center calibration apparatus shown in FIG. 7;

FIG. 9 is a top view of a slip ring of the mover shown in FIG. 8;

FIG. 10 is a schematic diagram of a planar center calibration system according to an embodiment of the present application;

FIG. 11 is a perspective view of the planar center calibration system shown in FIG. 10;

Fig. 12 is an enlarged schematic view of the portion a in fig. 11.

Reference numerals illustrate:

1. Plane center calibrating device, 11, base, 111, positioning plane, 112, through hole, 113, first clamping groove, 114, second groove, 12, supporting piece, 121, supporting barrel, 1211, first end face, 1212, second end face, 1213, first connecting hole, 1214, third convex column, 1215, slideway, 1216, second fastening piece, 122, fixing ring, 1221, second connecting hole, 1222, first convex column, 1223, third groove, 1224, first groove, 13, moving piece, 131, sliding ring, 1311, positioning plate, 1312, fixing hole, 132, fixing plate, 133, first connecting plate, 1331, first positioning groove, 134, second connecting plate, 1341, second positioning groove, 14, camera;

2. The device comprises a plane center calibration system, a 21, a test drawing board, 211, a first test plane, 2111, a first cross wire, 22, a test jig, 221, a second test plane, 2211 and a second cross wire.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The following disclosure provides many different embodiments, or examples, for implementing different structures of the application. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the application. Furthermore, the present application may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.

For ease of description, spatially relative terms, such as "inner," "outer," "lower," "upper," "above," "front," "rear," and the like, may be used herein to describe one element's or feature's relative positional relationship or movement to another element's or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures experiences a positional reversal or a change in attitude or a change in state of motion, then the indications of these directives will also correspondingly change, e.g., an element described as "under" or "under" another element or feature will then be oriented "over" or "over" the other element or feature. Thus, the example term "below" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used herein interpreted accordingly.

In the prior art, the position of the test equipment is calibrated by only using the displacement platform and the cross laser singly, and whether the position of the test equipment is correct or not is observed by naked eyes. The specific process of calibration and debugging is as follows, a test drawing board and a test fixture are respectively installed on test equipment, a cross laser device is placed between the test drawing board and the test fixture, so that the cross laser device emits cross laser, then naked eyes observe whether the center of the cross laser is aligned with the center of a cross line on the test drawing board or whether the center of the cross laser is aligned with the center of the cross line on the test fixture, and therefore XYR shaft displacement platforms for fixing the test drawing board or the test fixture are respectively adjusted until the centers of the cross lines of the test drawing board and the test fixture are aligned. The debugging and calibrating method has the following defects that as the vision of human eyes is different, the difference exists when naked eyes judge whether the center of the cross laser is aligned with the center of the cross line of the testing equipment, and the line thickness of the cross laser is generally 1mm-2mm, so that errors exist when the human eyes observe the cross laser, and in the process of debugging the testing equipment, whether the debugging accuracy is correct cannot be judged, so that the testing error of a module product is larger.

The application provides a plane center calibration device and a plane center calibration system, which can realize the center calibration of multiple planes, improve the accuracy of debugging and calibrating test equipment and reduce the test error of a module product.

Fig. 1 and 2 show a planar center calibration apparatus 1 according to an embodiment of the present application, where the planar center calibration apparatus 1 is disposed on a test device and is located between a test chart 21 and a test fixture 22, and the planar center calibration apparatus 1 includes a base 11, a support 12, a moving member 13 and a camera 14, the base 11 has a positioning plane 111, the positioning plane 111 is provided with a through hole 112, the support 12 is disposed on the positioning plane 111 of the base 11, the moving member 13 is disposed on the support 12, the camera 14 is disposed on the moving member 13, a shooting end of the camera 14 faces the test chart 21 or the test fixture 22 and is used for shooting a cross line of the test chart 21 or the test fixture 22, where a center of the cross line of the test chart 21 or the test fixture 22 shot by the camera 14 coincides with a center of the cross line of the camera 14 itself so as to calibrate a center position of the test chart 21 or the test fixture 22.

It should be noted that, the positioning plane 111 is provided with a through hole 112, so as to avoid affecting the normal shooting of the camera 14, and the shape of the through hole 112 may be a circular shape, a square shape, an oval shape, or the like, which is not limited herein. The camera can be an area array industrial camera with the existing model MV-CA050-10GM and has high resolution of 2448px multiplied by 2048 px. The camera 14 has a data transmission interface, and can be connected with the data transmission interface of the camera 14 and an external display device (such as a computer) through a data transmission line, etc., so that image data shot by the camera 14 (shot images are accurate to within 0.01 mm) can be transmitted to the external display device and processed by image software of the external display device, and the specific working principle can refer to the prior art and will not be repeated herein. The test equipment can adopt the existing module automatic function test machine, and the specific working principle can refer to the prior art. The X-axis, Y-axis, and R-axis of the XYR-axis displacement platform are shown in the figure, and by mounting the test chart 21 or the test jig 22 on the corresponding XYR-axis displacement platform, respectively, the rotation of the test chart 21 or the test jig 22 about the R-axis can be restricted, and the displacement of the test chart 21 or the test jig 22 in the X-axis or Y-axis direction can be adjusted. The application aims to measure the center accuracy of a test chart 21 and a test jig 22, wherein in a plane center calibration system, the test chart 21 is provided with an independent XYR axis displacement platform, the test jig 22 is also provided with an independent XYR axis displacement platform, and meanwhile, the XYR axis displacement platform is a standard component, and the precision and the use method thereof are not described herein in detail with reference to the prior art.

It will be appreciated that the base 11, test board 21 and test fixture 22 are each mounted to test equipment (not shown) when calibration of the test equipment is required. Before calibration, the parallelism between the test chart 21 and the positioning plane 111 of the base 11 or the parallelism between the test jig 22 and the positioning plane 111 of the base 11 must be within 0.005 mm. Firstly, the shooting end of the camera 14 faces the test chart 21 and is mounted on the moving piece 13, the supporting piece 12 is mounted on the positioning plane 111 of the base 11, the focusing range of the camera 14 can be coarse-adjusted by adjusting the position of the moving piece 13 on the supporting piece 12, meanwhile, the image shot by the camera 14 on the external display device is observed, the image software can simultaneously display the cross line of the test chart 21 and the cross line of the camera 14, and when the definition of the image shot by the camera 14 reaches the preset definition, the relative position of the moving piece 13 and the supporting piece 12 is fixed. When there is a deviation of the center of the reticle of the test chart 21 from the center of the reticle of the camera 14, the XYR axis displacement stage for fixing the test chart 21 may be adjusted until the center of the reticle of the test chart 21 coincides with the center of the reticle of the camera 14, at which time the calibration of the test chart 21 is completed. Then, the supporting member 12 is turned and mounted on the positioning plane 111 of the base 11, so that the photographing end of the camera 14 faces the testing jig 22, and the calibration process is the same as the testing drawing board 21, when the center of the cross line of the testing jig 22 deviates from the center of the cross line of the camera 14, the XYR axis displacement platform for fixing the testing jig 22 can be adjusted until the center of the cross line of the testing jig 22 is consistent with the center of the cross line of the camera 14, and the calibration of the testing jig 22 is completed. After the calibration of the test chart 21 and the test jig 22 is completed, the center alignment of the test chart 21, the test jig 22 and the base 11 can be within 0.01 mm. By adopting the plane center calibration device 1, the multi-plane center calibration can be realized, and compared with the prior art, the plane center calibration device 1 of the application can improve the accuracy of debugging calibration test equipment and reduce the test error of module products through the high accuracy of the image shot by the camera 14.

In some embodiments, as shown in fig. 3 and 4, the support 12 includes a support cylinder 121 and a fixing ring 122, the support cylinder 121 or the fixing ring 122 is detachably coupled with the positioning plane 111 of the base 11, preferably, an axis of the support cylinder 121 or the fixing ring 122 may be disposed to pass through a center of the through hole 112 of the base 11, the support cylinder 121 has a first end surface 1211 and a second end surface 1212 disposed opposite to each other, the fixing ring 122 is disposed at the first end surface 1211 of the support cylinder 121, and the fixing ring 122 and the support cylinder 121 are coaxially disposed, and the moving member 13 is movably disposed at an inner circumferential side of the support cylinder 121. Typically, the initial focal length of the camera 14 is within 110mm-130 mm. The fixing ring 122 and the supporting cylinder 121 are coaxially arranged to ensure that the optical center of the camera 14 coincides with the center of the supporting cylinder 121, and the focusing range of the camera 14 is enlarged by adjusting the position of the moving member 13 relative to the supporting cylinder 121.

As shown in fig. 4, the first end surface 1211 of the support cylinder 121 is provided with a plurality of first connection holes 1213, a side of the fixing ring 122 facing the support cylinder 121 is provided with a plurality of second connection holes 1221 corresponding to the first connection holes 1213 one to one, a side of the fixing ring 122 facing away from the support cylinder 121 is provided with a plurality of first grooves 1224 corresponding to the second connection holes 1221 one to one, the support cylinder 121 and the fixing ring 122 are connected by a first fastener, and by providing the first grooves 1224, a sufficient operation space is reserved for installing the first fastener. The first fastening member may be a screw, and the threaded end of the first fastening member passes through the second connecting hole 1221 of the fixing ring 122 and is in threaded connection with the first connecting hole 1213 of the supporting cylinder 121, so that the fixing ring 122 is fixedly connected to the supporting cylinder 121, the coaxiality between the fixing ring and the supporting cylinder is ensured, and the definition of the camera 14 for shooting the test chart 21 or the test jig 22 is further ensured.

In some embodiments, as shown in fig. 4 and 5, a first protruding column 1222 is disposed on a side of the fixing ring 122 facing away from the supporting cylinder 121, a first clamping groove 113 connected with the first protruding column 1222 in a clamping manner is disposed on the positioning plane 111 of the base 11, or a second clamping groove is disposed on a side of the fixing ring 122 facing away from the supporting cylinder 121, and a second protruding column connected with the second clamping groove in a clamping manner is disposed on the positioning plane 111 of the base 11. The connection between the fixing ring 122 and the positioning plane 111 of the base 11 can be realized through the clamping connection between the first protruding column 1222 and the first clamping groove 113 or the clamping connection between the second protruding column and the second clamping groove, so that the fixing ring 122 is ensured to be horizontally placed on the positioning plane 111 of the base 11 and cannot move, and the accuracy of the alignment of the optical center of the camera 14 and the center of the positioning plane 111 of the base 11 is ensured through the processing precision of the first protruding column 1222 or the second protruding column.

For the convenience of user's observation, the base 11 is provided with a second groove 114, and the fixing ring 122 and the supporting cylinder 121 are provided with a third groove 1223 corresponding to the second groove 114, and preferably, the orthographic projections of the second groove 114 and the third groove 1223 on the horizontal plane (XY plane) are in a cross shape. After the snap connection between the first stud 1222 and the first detent 113 or the snap connection between the second stud and the second detent, the second recess 114 of the base 11 can be seen aligned with the retaining ring 122 or with the third recess 1223 of the support barrel 121, as shown in fig. 6.

Optionally, in order to improve positioning accuracy between the fixing ring 122 and the base 11, a plurality of first protruding columns 1222 are provided, and the first clamping grooves 113 are provided in one-to-one correspondence with the plurality of first protruding columns 1222. In the embodiment of the present application, two first protrusions 1222 are provided, and the two first protrusions 1222 are symmetrically disposed with respect to the center of the fixing ring 122.

As shown in fig. 3, the second end 1212 of the support cylinder 121 is provided with two third protruding columns 1214 that are connected to the first clamping groove 113 in a clamping manner, or the second end 1212 of the support cylinder 121 is provided with a third clamping groove that is connected to the second protruding column in a clamping manner. Through the connection of the third convex column 1214 and the first clamping groove 113 or the connection of the second convex column and the third clamping groove, the connection between the supporting cylinder 121 and the positioning plane 111 of the base 11 can be realized, so that the supporting cylinder 121 can be ensured to be horizontally placed on the positioning plane 111 of the base 11 and cannot move, and the accuracy of the alignment of the optical center of the camera 14 and the center of the positioning plane 111 of the base 11 can be ensured through the processing precision of the second convex column or the third convex column 1214.

In some embodiments, as shown in fig. 7, the moving member 13 includes a sliding ring 131, the sliding ring 131 and the supporting cylinder 121 are coaxially arranged and are in sliding connection, the center of the sliding ring 131 coincides with the optical center of the camera 14, a positioning plate 1311 is arranged on the sliding ring 131, a slide 1215 is arranged on the peripheral side of the supporting cylinder 121 along the axial direction of the supporting cylinder 121, and the positioning plate 1311 is connected with the slide 1215 through a second fastener 1216. By adjusting the position of the positioning plate 1311 relative to the slide 1215, the sliding ring 131 slides relative to the moving member 13, thereby realizing coarse adjustment of the focusing range of the camera 14 and expanding the focusing range of the camera 14. When the resolution of the image captured by the camera 14 reaches the preset resolution, the positioning plate 1311 is fixedly connected to the slide 1215 by the second fastener 1216 (which may be a screw).

As shown in fig. 8 and 9, the positioning plates 1311 are provided in plurality, the plurality of positioning plates 1311 are uniformly distributed on the circumference of the sliding ring 131 in a ring shape, the plurality of slide ways 1215 are provided in a one-to-one correspondence to the positioning plates 1311, the plurality of slide ways 1215 are uniformly distributed on the circumference of the supporting cylinder 121 in a ring shape, a fixing hole 1312 is provided in any one of the positioning plates 1311, and one end of the second fastener passes through the slide way 1215 and is fixedly connected with the fixing hole 1312 of the positioning plate 1311. With the above arrangement, coaxiality between the slide ring 131 and the support cylinder 121 can be ensured. In an alternative embodiment, the positioning plate 1311 is provided with four, two of which are symmetrically disposed positioning plates 1311 provided with the fixing holes 1312.

In some embodiments, as shown in fig. 8, the moving member 13 further includes a fixing plate 132, a first connecting plate 133 and a second connecting plate 134, where the fixing plate 132 is disposed on the first connecting plate 133 and is used for fixing the camera 14, the fixing plate 132 is in an "L" shape, one end of the fixing plate 132 is fixedly connected with the first connecting plate 133, the other end is fixedly connected with the camera 14, the first connecting plate 133 and the second connecting plate 134 are disposed opposite to each other and are disposed on the same side of the sliding ring 131, a first positioning slot 1331 is disposed on a side of the first connecting plate 133 facing the second connecting plate 134, a second positioning slot 1341 is disposed on a side of the second connecting plate 134 facing the first connecting plate 133, the first positioning slot 1331 and the second positioning slot 1341 are both semicircular, and the first positioning slot 1331 and the second positioning slot 1341 are combined to form a circular positioning slot for limiting movement of the camera 14 in a horizontal direction and positioning of the camera 14 in a horizontal direction.

As shown in fig. 10, an embodiment of the present application provides a planar center calibration system 2, which includes a test chart 21, a test fixture 22 and the planar center calibration apparatus 1 as described above, where the test chart 21 is disposed on a test device, and the test fixture 22 is disposed on the test device and opposite to the test chart 21. By adopting the plane center calibration device 1, the center calibration of the test drawing board 21 and the test jig 22 can be sequentially realized, and compared with the prior art, the plane center calibration device 1 provided by the application can improve the accuracy of debugging and calibrating test equipment and reduce the test error of a module product by shooting images through the camera 14 with high accuracy.

In some embodiments, as shown in fig. 10 to 12, the side of the test chart 21 facing the camera 14 of the planar center calibration apparatus 1 has a first test plane 211, a first reticle 2111 is disposed on the first test plane 211, and the side of the test jig 22 facing the camera 14 of the planar center calibration apparatus 1 has a second test plane 221, and a second reticle 2211 is disposed on the second test plane 221.

When there is a deviation between the center of the first reticle 2111 of the test chart 21 and the center of the reticle of the camera 14, the XYR axis displacement platform for fixing the test chart 21 may be adjusted until the center of the first reticle 2111 of the test chart 21 coincides with the center of the reticle of the camera 14, at which time the calibration of the test chart 21 is completed, and then the support 12 is turned and mounted on the positioning plane 111 of the base 11 such that the photographing end of the camera 14 faces the test jig 22, the calibration process coincides with the test chart 21 until the center of the second reticle 2211 of the test jig 22 coincides with the center of the reticle of the camera 14, at which time the calibration of the test jig 22 is completed, thereby respectively achieving the center calibration of the first test plane 211 of the test chart 21 and the second test plane 221 of the test jig 22.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless an order of performance is explicitly stated. It should also be appreciated that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

The foregoing is only a specific embodiment of the application to enable those skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A planar center calibration device between a test board (21) and a test jig (22), characterized in that the planar center calibration device (1) comprises:

The base (11) is provided with a positioning plane (111), and a through hole (112) is arranged on the positioning plane (111);

a support (12) provided on the positioning plane (111) of the base (11);

A moving member (13) provided on the support member (12), and

The camera (14) is arranged on the moving piece (13), and the shooting end of the camera (14) faces the test drawing board (21) or the test jig (22) and is used for shooting a cross line of the test drawing board (21) or the test jig (22);

The center of the cross line of the test chart board (21) or the test jig (22) shot by the camera (14) coincides with the center of the cross line of the camera (14) so as to calibrate the center position of the test chart board (21) or the test jig (22).

2. The planar centering device according to claim 1, characterized in that the support (12) comprises a support cylinder (121) and a fixing ring (122), the support cylinder (121) or the fixing ring (122) being detachably connected to the positioning plane (111) of the base (11);

The support cylinder (121) has a first end surface (1211) and a second end surface (1212) which are oppositely arranged, the fixed ring (122) is arranged on the first end surface (1211) of the support cylinder (121), the fixed ring (122) and the support cylinder (121) are coaxially arranged, and the moving member (13) is movably arranged on the inner circumferential side of the support cylinder (121).

3. The planar center alignment apparatus according to claim 2, wherein the first end surface (1211) of the support cylinder (121) is provided with a plurality of first connection holes (1213), a side of the fixing ring (122) facing the support cylinder (121) is provided with a plurality of second connection holes (1221) in one-to-one correspondence with the first connection holes (1213), and a side of the fixing ring (122) facing away from the support cylinder (121) is provided with a plurality of first grooves (1224) in one-to-one correspondence with the second connection holes (1221).

4. The device according to claim 2, wherein the fixing ring (122) is provided with a first projection (1222) on a side facing away from the support cylinder (121), and a first clamping groove (113) connected with the first projection (1222) in a clamping manner is arranged on the positioning plane (111) of the base (11), or

The fixing ring (122) is provided with a second clamping groove on one side deviating from the supporting cylinder (121), and a second convex column connected with the second clamping groove in a clamping manner is arranged on the positioning plane (111) of the base (11).

5. The device according to claim 4, wherein the second end face (1212) of the support cylinder (121) is provided with a third projection (1214) which is snap-connected to the first clamping groove (113), or

The second end face (1212) of the supporting cylinder (121) is provided with a third clamping groove which is connected with the second convex column in a clamping way.

6. The planar center alignment device according to claim 2, wherein the moving member (13) comprises a sliding ring (131), the sliding ring (131) being coaxially arranged with the support cylinder (121) and slidingly connected therebetween, the center of the sliding ring (131) coinciding with the optical center of the camera (14);

The sliding ring (131) is provided with a positioning plate (1311), the periphery of the supporting cylinder (121) is provided with a slide way (1215) along the axial direction of the supporting cylinder (121), and the positioning plate (1311) is connected with the slide way (1215) through a second fastener (1216).

7. The planar center calibration apparatus according to claim 6, wherein a plurality of the positioning plates (1311) are provided, the plurality of positioning plates (1311) being uniformly distributed in a ring shape on a peripheral side of the sliding ring (131);

The slide ways (1215) are arranged in a plurality of corresponding to the positioning plates (1311) one by one, and the slide ways (1215) are uniformly distributed on the periphery of the supporting cylinder (121) in a ring shape;

Any one of the positioning plates (1311) is provided with a fixing hole (1312), and one end of the second fastening piece (1216) passes through the slide way (1215) and is fixedly connected with the fixing hole (1312) of the positioning plate (1311).

8. The planar center alignment apparatus according to claim 6, wherein the moving member (13) further comprises a fixing plate (132), a first connection plate (133), and a second connection plate (134), the fixing plate (132) being provided on the first connection plate (133) for fixing the camera (14);

The first connecting plate (133) and the second connecting plate (134) are oppositely arranged, the first connecting plate (133) and the second connecting plate (134) are arranged on the same side of the sliding ring (131), a first positioning groove (1331) is formed in one side of the first connecting plate (133) towards the second connecting plate (134), a second positioning groove (1341) is formed in one side of the second connecting plate (134) towards the first connecting plate (133), and the first positioning groove (1331) and the second positioning groove (1341) are combined to form a circular positioning groove for limiting the movement of the camera (14) in the horizontal direction.

9. A planar center alignment system, comprising:

A test panel (21);

a test jig (22) disposed opposite to the test pattern plate (21), and

The planar center alignment apparatus (1) according to any one of claims 1 to 8.

10. The planar center calibration system according to claim 9, wherein a side of the test chart board (21) facing the camera (14) of the planar center calibration device (1) is provided with a first test plane (211), a first cross line (2111) is arranged on the first test plane (211), a side of the test jig (22) facing the camera (14) of the planar center calibration device (1) is provided with a second test plane (221), and a second cross line (2211) is arranged on the second test plane (221).