CN107656419B

CN107656419B - Depth correction test equipment and test method thereof

Info

Publication number: CN107656419B
Application number: CN201610601168.7A
Authority: CN
Inventors: 朱亚栋; 戎琦; 邵登科; 范秋林; 陈余天; 薛江亮; 禹福; 王芳芳; 吴锦; 柯海挺; 张宝忠
Original assignee: Ningbo Sunny Opotech Co Ltd
Current assignee: Ningbo Sunny Opotech Co Ltd
Priority date: 2016-07-26
Filing date: 2016-07-26
Publication date: 2023-06-23
Anticipated expiration: 2036-07-26
Also published as: CN107656419A

Abstract

A depth correction testing device for performing a depth correction test on a module to be tested, comprising: the device comprises a shell, a test assembly, a control panel and an electric control assembly, wherein the test assembly, the electric control assembly and the control panel are arranged in the shell, the control panel is arranged on the surface of the shell, the test assembly, the control panel and the electric control assembly are electrically connected, and the electric control assembly controls the test assembly to conduct depth correction test on the module to be tested through the control panel.

Description

Depth correction test equipment and test method thereof

Technical Field

The invention relates to a testing device, in particular to a novel depth correction testing device which can improve the efficiency of correcting a camera module.

Background

The camera module, such as a double camera module, needs to be subjected to depth correction test after production, and a new process technology is adopted in the process, so that the basic conditions of module test need to be considered in scheme design. Such as the placement location of the modules and targets, the cross-center distance requirement for module placement, the flatness requirement for targets, and the focus distance requirement. These conditions are satisfied with the corresponding requirements to perform the depth correction test. Otherwise, errors in the test results may increase.

In addition, from the viewpoint of productivity guarantee, the number of modules to be tested at one time needs to be increased. At this time, the test conditions are comprehensively evaluated. For example, the size of the target, the focusing distance and the size of the box body are suitable for the conditions of product line placement. Therefore, the synchronous test is carried out by simultaneously putting a plurality of modules. However, multi-module synchronous testing increases the workload of the operator, increases the labor consumption of the operator to some extent, and increases errors in the testing process. In addition, with the increasing emergence of industrialized development stations, the stations become the basic production units of industrial production lines. A product is manufactured by first dividing the product into the most basic originals and distributing the original assemblies to the stations according to the manufacturing sequence. Each station assembles the original or assembles the components of the original into a product. In the depth correction test of the double-shot module, the station required for completing the same test also affects the efficiency of the depth correction test of the double-shot module, and also affects the labor cost of production and test.

Therefore, the improvement of the efficiency of the depth correction test on the camera module on the premise of meeting various conditions of the depth correction test is one of the problems to be solved at present.

Disclosure of Invention

The invention aims to provide a depth correction test device which provides a test assembly, wherein the test assembly and a plurality of targets can realize the functions of automatic displacement and automatic rotation angle through software and electric control, so that the test assembly can be moved to a designated position according to the setting requirement under the test state and then tested.

The invention further provides a depth correction testing device, the module to be tested can synchronously realize automatic photographing at a plurality of different diagonal distances by using the depth correction testing device, and the depth correction testing device can start dynamic link library software to integrate calculation and correction after each module to be tested photographs.

Another object of the present invention is to provide a depth correction testing apparatus, which has a good feedback mechanism in use, and can effectively place confusion of defective products and good products.

Another object of the present invention is to provide a depth correction testing apparatus, which implements a depth correction test of a module to be tested through software, an electronic control component and a testing component, thereby improving the degree of automation.

The invention further aims to provide a depth correction testing device, which realizes the depth correction testing of the module to be tested through software, an electric control assembly and a testing assembly, and effectively reduces the labor intensity of operators.

Another object of the present invention is to provide a depth calibration test apparatus, which can improve the production efficiency of a module to be tested.

Another object of the present invention is to provide a depth correction testing apparatus, which can effectively reduce labor cost and improve the utilization rate of operators.

Another object of the present invention is to provide a depth correction testing method, which can perform a depth correction test on a module to be tested, thereby improving the testing efficiency.

In order to achieve the above object, the present invention provides a depth correction testing apparatus for performing a depth correction test on a module to be tested, comprising:

a shell body, a first connecting piece and a second connecting piece are arranged on the shell body,

a test assembly for testing the test object of the test object,

a control panel, and

an electric control assembly is provided with a plurality of electric control modules,

the test assembly is electrically connected with the control panel, and the control panel controls the test assembly to perform depth correction test on the module to be tested through the control panel.

In an embodiment, the test assembly of the depth correction test device comprises a multi-station fixture mechanism capable of self-shifting, wherein the depth correction test device can use three targets to perform depth correction test on four modules to be tested through control of the control panel and the electric control assembly.

In one embodiment, the depth correction testing apparatus includes a plurality of light sources, each of the light sources and corresponding ones of the targets being secured together by a target mount.

In an embodiment, the test assembly further comprises a linkage rod, the top of the target fixing frame is connected to the linkage rod, and a servo motor of the electric control assembly drives the linkage rod to rotate.

In an embodiment, the depth correction test device further includes a device holder connected to the housing, and the test assembly includes a first test component, a second test component, and a third test component, where each of the test assemblies is sequentially disposed in parallel with each other on the device holder.

In an embodiment, the first test component includes a first module frame, a first rotary servo motor, a first adjusting component, a first sliding component, a first target fixing frame and a first connecting rod, wherein the first module frame is connected to the first sliding component, the first sliding component is connected to the equipment support, the first adjusting component is connected to the first module frame, the first rotary servo motor is connected to the first adjusting component, the first connecting rod is connected to the first adjusting component, the first target fixing frame is connected to the first connecting rod for fixing a first target, the first light source is connected to the first target fixing frame, and the first connecting rod is connected to the rotary servo motor.

In an embodiment, the first module rack further includes a first rack board and two first sub-rack connectors, and each of the first sub-rack connectors is vertically connected to two ends of the first rack board.

In one embodiment, each of the first sub-rack connectors further includes a linear guide rail and a chute that mates with the linear guide rail.

In an embodiment, the first sliding assembly further includes two first transmission shafts, a first sliding belt, and a first fixing member, two first transmission shafts are respectively connected to two ends of the first sliding belt, the first transmission shafts have motors driving the first sliding belt to rotate, one ends of the first fixing members are connected to the first module frame, the other ends of the first fixing members have a through hole penetrating through the first sliding belt and are fixed to the first sliding belt, so that the first sliding belt can drive the first module frame to slide along the first substrate.

In one embodiment, the first adjusting assembly further comprises two first sub-adjusting members, wherein a fixed plate of one of the first sub-adjusting members is connected to the first sub-rack connecting member, and wherein the other of the first sub-adjusting members further comprises an angle plate and a pointer.

In an embodiment, the first target holder further includes a first mounting plate, a plurality of first mounting plate clamps coupled to the first mounting plate and the first link shaft, and a plurality of first target clamps coupled to the first link shaft and capable of fixing the first target.

In an embodiment, the second test component includes a second module frame, a second rotary servo motor, a second adjusting component, a second sliding component, a second target fixing frame and a second link shaft, wherein the second module frame is connected to the second sliding component, the second sliding component is connected to the equipment support, the second adjusting component is connected to the second module frame, the second rotary servo motor is connected to the second adjusting component, the second link shaft is connected to the second adjusting component, the second target fixing frame is connected to the second link shaft, and is used for fixing a second target, the second light source is connected to the second target fixing frame, and the second link shaft is connected to the rotary servo motor.

In an embodiment, the second module rack further includes a second rack board and two second sub-rack connectors, and each of the second sub-rack connectors is vertically connected to two ends of the second rack board.

In one embodiment, each of the second sub-rack connectors further includes a linear guide rail and a chute that mates with the linear guide rail.

In an embodiment, the second sliding assembly further includes two second transmission shafts, a second sliding belt, and a second fixing member, two ends of the second sliding belt are respectively connected to two second transmission shafts, the second transmission shafts have motors that drive the second sliding belt to rotate, one end of the second fixing member is connected to the second module frame, and the other end of the second fixing member has a through hole penetrating through the second sliding belt and is fixed to the second sliding belt, so that the second sliding belt can drive the second module frame to slide along the second substrate.

In one embodiment, the second adjusting assembly further comprises two second sub-adjusting members, wherein a fixed plate of one of the second sub-adjusting members is connected to the second sub-rack connecting member, and wherein the other of the second sub-adjusting members further comprises an angle plate and a pointer.

In an embodiment, the second target holder further includes a second plate, a plurality of second plate holders connected to the second plate and the second link shaft, and a plurality of second target holders connected to the second link shaft and capable of fixing the second target.

In an embodiment, the third test component includes a third module frame, a third rotary servo motor, a third adjusting component, a third sliding component, a third target fixing frame and a third link shaft, wherein the third module frame is connected to the third sliding component, the third sliding component is connected to the equipment support, the third adjusting component is connected to the third module frame, the third rotary servo motor is connected to the third adjusting component, the third link shaft is connected to the third adjusting component, the third target fixing frame is connected to the third link shaft, and is used for fixing a third target, the third light source is connected to the third target fixing frame, and the third link shaft is connected to the rotary servo motor.

In an embodiment, the third module rack further includes a third rack board and two third sub-rack connectors, and each of the third sub-rack connectors is vertically connected to two ends of the third rack board.

In one embodiment, each of the third sub-rack connectors further includes a linear guide rail and a chute that mates with the linear guide rail.

In an embodiment, the third sliding assembly further includes two third transmission shafts, a third sliding belt, and a third fixing member, two ends of the third sliding belt are respectively connected to two third transmission shafts, the third transmission shafts have motors that drive the third sliding belt to rotate, one end of the third fixing member is connected to the third module frame, and the other end of the third fixing member has a through hole penetrating through the third sliding belt and is fixed to the third sliding belt, so that the third sliding belt can drive the third module frame to slide along the third substrate.

In one embodiment, the third adjusting assembly further comprises two third sub-adjusting members, wherein a fixed plate of one of the third sub-adjusting members is connected to the third sub-rack connecting member, and wherein the other of the third sub-adjusting members further comprises an angle plate and a pointer.

In an embodiment, the third target fixing frame further includes a third placing plate, a plurality of third placing plate clamps connected to the third placing plate and the third connecting rod shaft, and a plurality of third target clamps connected to the third connecting rod shaft and capable of fixing the third target.

In one embodiment, a first reticle holder of the first test component is greater in size than a second reticle holder of the second test component, and also greater in size than a third reticle holder of the third test component, the second reticle holder being greater in size than the third reticle holder.

According to another aspect of the present invention, a depth correction testing method is also disclosed for testing a module to be tested, the depth correction testing method includes the following steps:

(a) The test assembly moves to the center of a target for testing, the angle of the target is controlled by an electric control assembly to rotate, the image is shot, and at least two targets are used in the test process; and

(b) Software calculation and depth correction;

and (c) if the corrected test result of the step (b) is found to be unsatisfactory, circularly executing the step (a) to the step (b) until the corrected test result is satisfactory.

In an embodiment, before the moving of the test component in the step (a), the method further comprises the steps of: (a') determining whether all of the modules to be tested are lit.

In an embodiment, the step (a') further comprises the steps of:

(a' 1) receiving a start instruction by a test software of a depth correction test apparatus;

(a' 2) the module under test being placed and secured to a module frame of a corresponding test assembly;

(a' 3) a control panel receiving a start instruction and judging whether the module to be tested is lighted;

and (3) if the module to be tested in the step (a ' 3) is not fully lighted, circularly executing the step (a ' 1) to the step (a ' 3) until the module to be tested is fully lighted to execute the step (a).

In one embodiment, the photographing in the step (a) is performed at multiple angles.

In one embodiment, the plurality of angles in step (a) are 0 °, +20°, and-20 °, respectively.

In one embodiment, the plurality of angles in step (a) are 0 °, +30°, and-30 °, respectively.

In one embodiment, the testing in the step (a) using at least two targets further comprises the following steps:

(a1) The target is moved out of the field angle of the module to be tested, and the angle of the other target is rotated by the control of the electric control assembly to respectively perform shooting; and

(a2) The other target is moved out of the field angle of the module to be tested, and the angles of the targets are rotated by the control of the electric control assembly to respectively perform image shooting;

In an embodiment, the photographing in the step (a 1) is performed at multiple angles.

In one embodiment, the plurality of angles in step (a 1) are 0 °, +30°, and-30 °, respectively.

In one embodiment, the photographing is performed at multiple angles in the step (a 2).

In one embodiment, the plurality of angles in step (a 2) are 0 °, +30°, and-30 °, respectively.

In one embodiment, the number of targets used is three.

In one embodiment, the depth correction test method comprises the steps of:

(A) Centering is carried out among the tests of the modules to be tested;

(B) A control panel of the depth correction test equipment receives a starting instruction;

(C) Each sub-test part of the test assembly and the corresponding light source respectively move through the electric control assembly of the depth correction test equipment;

(D) Each module to be tested takes a picture in the running process of the depth correction test equipment;

(E) The photo data is transmitted to a depth calibration module of the electronic control assembly; and

(F) The depth calibration module performs data analysis and judges whether the detection of each module to be detected is qualified or not;

and (3) circularly executing the step (A) to the step (F) if the correction test result of the step (F) does not meet the standard, until the correction test result meets the standard.

In an embodiment, the centering in the step (a) is to adjust a center of intersection of each module to be tested from an image of a test interface to coincide with a center of each target mark point.

In one embodiment, four of the modules to be tested, which are implemented as dual camera modules, are tested for depth simultaneously.

Drawings

Fig. 1 is a schematic perspective view of the depth correction testing apparatus according to a preferred embodiment of the present invention.

Fig. 2 is an enlarged schematic view of a control panel of the depth correction testing apparatus according to the above preferred embodiment of the present invention.

Fig. 3 is a schematic view of a lower housing of the depth correction testing apparatus according to the above preferred embodiment of the present invention.

Fig. 4 is a schematic view of the bottom wall of the depth correction testing apparatus according to the above preferred embodiment of the present invention.

Fig. 5 is a schematic view of an electronic control assembly of the depth correction testing apparatus according to the above preferred embodiment of the present invention.

Fig. 6 is an enlarged schematic view of the caster assembly of the depth correction testing apparatus according to the above preferred embodiment of the present invention.

Fig. 7 is an internal perspective view of the depth correction testing apparatus according to the above preferred embodiment of the present invention.

Fig. 8 is an internal perspective view of the depth correction testing apparatus according to the above preferred embodiment of the present invention.

Fig. 9 is an enlarged schematic view of a second test assembly of the depth correction test apparatus according to the above preferred embodiment of the present invention.

Fig. 10A is an enlarged schematic view of a second test assembly of the depth correction test apparatus according to the above preferred embodiment of the present invention.

Fig. 10B is an enlarged schematic view of a second test assembly of the depth correction test apparatus according to the above preferred embodiment of the present invention.

Fig. 10C is an enlarged schematic view of a second test assembly of the depth correction test apparatus according to the above preferred embodiment of the present invention.

Fig. 10D is an enlarged schematic view of a second test assembly of the depth correction test apparatus according to the above preferred embodiment of the present invention.

Fig. 11 is an internal perspective view of the depth correction testing apparatus according to the above preferred embodiment of the present invention.

Fig. 12A is an enlarged schematic view of a first test assembly of the depth correction test apparatus according to the above preferred embodiment of the present invention.

Fig. 12B is an enlarged schematic view of a third test assembly of the depth correction test apparatus according to the above preferred embodiment of the present invention.

Fig. 13 is a schematic diagram of the depth correction testing apparatus according to the above preferred embodiment of the present invention for performing a depth correction test on a module to be tested.

Fig. 14 is an enlarged schematic view of the built-in tooling of the depth correction test apparatus according to the above preferred embodiment of the present invention.

Fig. 15 is an enlarged schematic view of a second test assembly of the depth correction test apparatus according to the above preferred embodiment of the present invention.

Detailed Description

The following description is presented to enable one of ordinary skill in the art to make and use the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.

Fig. 1 to 15 show a depth correction testing apparatus according to a preferred embodiment of the present invention, which can be used for testing an image capturing module, such as a single-shot or multi-shot module, and in the present invention, a dual-shot module is used for performing a depth correction test. The depth correction testing equipment synchronously tests four modules, has a good feedback mechanism, realizes the operation flow through software, electric control and mechanisms, meets a plurality of conditions required by the depth correction testing of the double-shot module, improves the degree of automation, improves the efficiency and the production efficiency of the depth testing of the double-shot module, and also effectively reduces the labor intensity and the labor cost of operators. Of course, in the preferred embodiment of the present invention, the synchronous test is performed on four modules, but it will be understood by those skilled in the art that the number of modules to be synchronously tested is not limited to four, such as one to three, or more. The invention preferably carries out synchronous test on four modules, thereby ensuring the test accuracy and improving the test efficiency.

Specifically, the depth correction testing apparatus includes a housing 10, an apparatus rack 20, a testing assembly 30, a control panel 40, and an electrical control assembly 50. The device support 20 is connected with the housing 10, the test assembly 30 and the electric control assembly 50 are arranged in the housing 10, and the control panel 40 is arranged on the surface of the housing 10. The test assembly 30, the control panel 40, and the electronic control assembly 50 are electrically connected. In a preferred embodiment of the present invention, the apparatus support 20 further comprises a plurality of columns of support portions 21 perpendicular to the horizontal line, and a base plate 22 perpendicularly connected to the support portions 21, the support portions 21 for the overall weight bearing of the depth correction test apparatus, and the base plate 22 for supporting the test assembly 30. The test assembly 30 is movable over the substrate 22. The test assembly 30 includes a first test member 31, a second test member 32, and a third test member 33. The substrate 22 includes a first substrate 221, a second substrate 222 and a third substrate 223 parallel to each other and connected to the supporting portion 21. The first test part 31 is disposed on the first substrate 221, the second test part 32 is disposed on the second substrate 222, and the third test part 33 is disposed on the third substrate 223. The housing 10 can provide a shading environment for the depth correction testing apparatus, so as to avoid interference of external light. As shown in fig. 7, the device holder 20 further comprises a scale 23 for adjusting the distance between the sub-test parts of the test assembly 30, in the preferred embodiment, the distance between each of the first test part 31, the second test part 32 and the third test part 33.

Further, as shown in fig. 1, the housing 10 includes an upper housing 11, a middle housing 12 connected to the upper housing 11, and a lower housing 13 connected to the middle housing 12. The first test part 31 is disposed in the upper housing 11, the second test part 32 and the third test part 33 are disposed in the middle housing 12, the control panel 40 is disposed on the back of the middle housing 12 in the present embodiment, and the electric control assembly 50 is disposed in the lower housing 13.

Specifically, the upper housing 11 includes a top cover 111 and four upper side walls 112, wherein each of the four upper side walls 112 has an upper side door 1121, so that an operator can monitor the internal test conditions at any time. The middle housing 12 includes a table 121, a control wall 122, and three middle side walls 123. As shown in fig. 2, the control wall 122 of the middle housing 12 is connected to the control panel 40 and is provided with a viewing window 1221, a USB zone 1222, a plurality of buttons 1223, a plurality of indicator lights 1224, and two

display screens

12251, 12252. Wherein the USB area 1222, the button 1223, the indicator light 1224, and the display screens 12251, 12252 are electrically connected to the control panel 40, the electronic control assembly 50. The USB area 1222 has a plurality of USB jacks, which are convenient for connecting with other electronic devices, and performs a function of inputting or outputting data. In the preferred embodiment, each of the buttons 1223 is electrically matched to each of the lights 1224, for example, when the button 1223 performing the activation function is depressed, the corresponding electrically connected lights 1224 emit colored light to provide the corresponding indication function. Further, the buttons 1223 may further include a device total switch button 12233, electronic

control switch buttons

12231 and 12232, an emergency shutdown button 12234, three

single control buttons

12235, 12236, 12237, and the like. The device master switch button 12233 is capable of controlling the overall activation and deactivation of the depth correction test device, the electronically controlled

switch buttons

12231 and 12232 are used to control the activation and deactivation of the display screens 12251 and 12252, respectively, the emergency shutdown button 12234 is used to emergency shutdown the operation of the depth correction test device, and the three

single control buttons

12235, 12236, 12237 are used to control the first test part 31, the second test part 32, and the third test part 33, respectively. It will be appreciated by those skilled in the art that the invention is not limited to the specific number and placement of the various components of the control wall 122 described in the preferred embodiment.

In addition, as shown in fig. 2, the observation window 1221 is used for an operator to observe the test condition during the test. The table 121 further includes an operating platform 1211 coupled to the control wall 122 and a storage drawer 1212 for storing a keyboard or other items required during operation.

It should be noted that each of the three middle side walls 123 of the middle housing 12 has a middle side door 1231 for placing the module to be tested 90 therein, so as to facilitate the operation of an operator.

Fig. 3 shows a schematic structure of the lower housing 13. The lower housing 13 includes a partition 131, four lower side walls 132, and a bottom wall 133. The partition plates 131 are connected to the four lower side walls 132, and partition the electronic control assembly 50 in the lower housing 13, so as to block pollution of the electronic control assembly 50 by the external environment. Four of the lower side walls 132 each have a lower side door 1321 and at least one fan 1322. The lower door 1321 is used for placing and replacing the electronic control assembly 50, and the fan 1322 is used for dissipating heat. As shown in fig. 4, the bottom wall 133 further has a plurality of heat dissipating holes 1331 for enhancing heat dissipation and prolonging the service life of each component.

As shown in fig. 5, the electronic control unit 50 is disposed in the lower housing 13. In the preferred embodiment of the present invention, the electronic control unit 50 further includes two

host computers

51, 52 and an industrial personal computer 53. The computer hosts 51, 52 and the industrial personal computer 53 are electrically connected with the control panel 40 and the test assembly 50.

It should be noted that, as shown in fig. 3, the lower housing 13 further has an operation slot 130 formed by the partition 131 and four lower sidewalls 132, so as to facilitate the operation of the operator during the depth correction test.

It should be noted that, as shown in fig. 2 and 6, the lower housing 13 further includes four caster assemblies 134. Each caster assembly 134 includes a caster anchor plate 1341 attached to the bottom wall 133, a sub-caster anchor 1342 attached to the caster anchor plate 1341, an axle 1343 attached to the sub-caster anchor plate 1342, a wheel 1344 attached to the sub-caster anchor plate 1342, and a positioning member 1345 attached to the caster anchor plate 1341. Wherein the wheels 1344 are used to move the depth correction testing apparatus and the positioning members 1345 are used to secure the depth correction testing apparatus.

Fig. 7, 8 and 11 are schematic structural views of the device holder 20 and the test assembly 30 shown from different orientations after the upper case 11 and the middle case 12 are removed by the depth correction testing apparatus according to the preferred embodiment of the present invention. The test assembly 30 is movable on the substrate 22 of the equipment rack 20.

Fig. 9 to 10D show schematic structural views of the second test part 32. Both ends of the second test part 32 are respectively disposed on two

second sub-substrates

2221 and 2222 of the second substrate 222. Specifically, the second test part 32 includes a module frame 321, a rotary servo motor 322, an adjustment assembly 326, a slide assembly 323, a reticle holder 324, a light source 325, and a link shaft 327. The module frame 321 is connected to the sliding component 323, and moves on the second substrate 222 along with the sliding component 323, the sliding component 323 is connected to the second substrate 222, the adjusting component 326 is connected to the module frame 321, and can move along with the module frame 321, the rotary servo motor 322 is connected to the adjusting component 326, the link shaft 327 is connected to the adjusting component 326, the target fixing frame 324 is connected to the link shaft 327, the second light source 325 is disposed on the target fixing frame 324, and the second target can be fixed on the target fixing frame 324.

The module frame 321 further includes a frame plate 3211, a first frame connector 3212, and a second frame connector 3213. The first rack connector 3212 is vertically connected to one end of the rack plate 3211, and the second rack connector 3213 is vertically connected to the other end of the rack plate 3211. In order to realize the movement of the module frame 321 on the second substrate 222, the surfaces of the second sub-substrates 2221 and 2222 respectively have a first sliding rail 22211 and a second sliding rail 22221. The first frame connector 3212 further has a first sliding groove matching with the first sliding rail 22211, so that the first frame connector 3212 can slide on the second sub-board 2221 along the first sliding rail 22211, and the second frame connector 3213 further has a second sliding groove matching with the second sliding rail 22221, so that the second frame connector 3213 can slide on the second sub-board 2222 along the second sliding rail 22221. Because the first slide rail and the second slide rail are horizontally disposed on the second sub-substrate 222, the module frame 321 can move horizontally along the second substrate 222. In this preferred embodiment of the invention, the frame mount plate 3211 may be implemented as a probe fixture.

The sliding assembly 323 further includes a first transmission shaft 3231, a second transmission shaft 3232, a sliding belt 3233, and a fixing member 3234. The sliding belt 3233 has one end connected to the first transmission shaft 3231 and the other end connected to the second transmission shaft 3232, and the second transmission shaft 3232 has a motor for driving the sliding belt 3233 to rotate, so that the sliding belt 3233 can rotate along with the first transmission shaft 3231 and the second transmission shaft 3232. The fixing member 3234 has one end connected to the module frame 321, and the other end having a through hole passing through the sliding belt 3233 and fixed to the sliding belt 3233, so that the sliding belt 3233 can drive the module frame 321 to slide along the second substrate 222.

Both ends of the link shaft 327 are respectively connected to the center of the fixed base plate of the adjusting unit 326, and can move along with the adjusting unit 326. The second target fixing frame 324 is connected with the connecting rod shaft 327 and is used for placing the second target, and the second target fixing frame 324 can move along with the connecting rod shaft 327. To effect adjustment of the angle of the second target 325 relative to horizontal, the adjustment assembly 326 further includes a first adjustment member 3261 and a second adjustment member 3262. The fixing plate of the first adjusting member 3261 is connected to the first frame connecting member 3212, the second adjusting member 3262 is disposed on the second frame connecting member 3213, in order to display the adjusted angle, the second adjusting member 3262 further includes an angle plate 32621 and a pointer 32622, the pointer 32622 can indicate the scale on the angle plate 32621, and the indicated scale indicates the angle of the second target fixing frame 324 relative to the horizontal line.

To improve the accuracy of the test, the second target is parallel to the second target holder 324, and the angle of the second target holder 324 relative to the horizontal line drives the link shaft 327 to perform angle adjustment through the adjusting component 326. As shown in fig. 10C, the second target holder 324 further includes a plate 3242, a plurality of plate holders 3241 connected to the plate 3242 and the link shaft 327, and a plurality of target holders 3243 connected to the link shaft 327 and capable of holding the second target 325. Thus, the second target 325 is able to be adjusted in angle relative to horizontal by the adjustment assembly 326 with the link shaft 327.

As shown in fig. 7, 8, 11 and 12A to 12B, the first, second and

third test parts

31, 32 and 33 of the test assembly 30 are similar in structure, except for the size of the target holder. In the preferred embodiment of the present invention, the first test part 31 includes a first reticle holder 314 and a first light source 315, the second test part 32 includes a second reticle holder 324 and a second light source 325, and the third test part 33 includes a third reticle holder 334 and a third light source 335. In the preferred embodiment of the present invention, the first target plate has a size larger than the second target plate and also larger than the third target plate, and may be implemented as a large target plate, and accordingly, the first target plate holder 314 has a size larger than the second target plate holder 324 and the third target plate holder 334; the second target plate has a size larger than the third target plate, and may be implemented as a target plate, and accordingly, the second target plate holder 324 has a size larger than the third target plate holder 334; the third target 334 may be implemented as a small target. Of course, those skilled in the art will appreciate that other embodiments of the invention are not so limited.

It is worth mentioning that in the shifting process of the tool, the moving modes of the three light sources keep consistent. Each of the light sources is moved by a corresponding one of the displacement stepper motors 54 connected to each of the adjustment assemblies, and each of the targets and each of the corresponding light sources are locked together by each of the target holders, so that each of the targets moves synchronously as each of the light sources moves. As shown in fig. 15, taking the second test part 32 as an example, since the second targets and the corresponding second light sources 325 are locked together by the second target holder 324, the top mechanism of the second target holder 324 is coupled to the link shaft 327, and the other end of the link shaft 237 is driven by the forward and reverse rotation of the rotary servo motor 322. Therefore, the three targets can realize the automatic rotation function.

The movement of the tool is further disclosed as shown in fig. 14, specifically, the tool is fixed on the built-in platform of the depth correction testing apparatus, and the bottom mechanism of the platform is connected to a belt, which is driven by a stepping motor. That is, in an embodiment, the tooling is implemented as a USB3.0 tooling 41A, the four-station fixture mechanism is implemented as a USB3.0 tooling fixing plate 42A, the USB3.0 tooling 41A is disposed on the USB3.0 tooling fixing plate 42A of the depth correction test device, and a USB3.0 tooling adapter plate 43A is connected between the two USB3.0 tooling 41A. The USB3.0 tooling fixture plate 42A is connected to a bottom mechanism. The bottom mechanism is connected to the sliding belt 3233A, and the sliding belt 3233A is driven by a stepping motor 54A. So that the USB3.0 tooling fixture plate 42A can move. More specifically, the bottom mechanism 44A includes a linear bearing slide 441A and a drag chain 442A, the USB3.0 tooling fixing plate 42A can slide along the linear bearing slide 441A, and a limit switch 443A is further disposed at one end of the linear bearing slide 441A to control the displacement of the USB3.0 tooling 41A.

Thus, the depth test device can be used to detect modules. In this preferred embodiment of the present invention, the fixture 41A is implemented as four modules to be tested, that is, four modules to be tested 91, 92, 93, 94 are fixed on the four-station fixture for testing using the depth test apparatus as an example. Firstly, resetting the depth test equipment before testing the module to be tested, namely resetting the position of a rack for placing the module to be tested and the position of a light source through the control of electric control, a mechanism and software of the depth test equipment, so as to ensure that the environmental conditions before testing the module to be tested are unified each time, and the resetting function can be operated once when the equipment is started each time; then placing the modules to be tested, that is, placing four modules to be tested 91, 92, 93, 94 on the test assembly 30 for testing, in the preferred embodiment of the present invention, the modules to be tested 91 and 92 are placed on the second module frame 321 of the second test component 32, and the modules to be tested 93 and 94 are placed on the third module frame 331 of the third test component 33; then, the center alignment between the module to be tested is determined from the image of the test interface, that is, whether the cross centers of the four modules to be tested are coincident with the center of the marking point of each marking board, in the preferred embodiment of the present invention, the determination sequence is that the position center of the cross center of the module to be tested is determined based on the position center of the marking point of the large marking board (that is, the first marking board 315), after the position of the cross center of the module to be tested is determined, the center positions of the marking points of the small marking board (that is, the second marking board 325) and the middle marking board (that is, the third marking board 335) are coincident with the cross centers of the four modules to be tested; finally, for the operation test using the depth test device, namely through electric control, mechanism and software control, after an employee presses a start key on the depth test device, the four racks placed by the modules to be tested and the three light sources respectively move, all pictures shot by the modules to be tested in the operation test process are input into a depth calibration module of the electric control assembly 50 for data analysis, and whether the detection of the modules to be tested is qualified is judged.

Thus, in this preferred embodiment of the invention, the test steps of the depth correction test apparatus are:

(a) Opening test software;

(b) Placing and fixing the module to be tested on each module rack of the test assembly 30;

(c) Pressing a start button on the control panel 40 to judge whether the module to be tested is lighted;

(d) When the modules to be tested are all lighted, the test assembly 30 automatically moves to the center of the third standard plate 335 for testing, the motor of the electric control assembly 50 controls the third standard plate 335 to rotate by an angle, and the images are respectively taken at three angles of 0 degree, +20 degrees and-20 degrees indicated by the third adjusting assembly 336;

(e) Removing the third target 335 from the field of view of the module to be tested, and rotating the second target 325 by controlling the motor of the electronic control unit 50 to perform mapping at three angles of 0 °, +30°, and-30 ° indicated by the second adjustment unit 326;

(f) The second target 325 is moved out of the field angle of the module to be tested, the first target 315 is rotated by the motor control of the electric control assembly 50, and the imaging is performed under the three angles of 0 degree, +30 degree and-30 degree indicated by the first adjusting assembly 316;

(g) Dynamic link library software calculation and depth correction;

(h) And closing the depth correction test equipment.

And (c) if the module to be tested in the step (c) is not fully lighted, circularly executing the steps (a) to (c) until the module to be tested is fully lighted to execute the step (d), wherein if the correction test result of the step (g) is found to be unsatisfactory, circularly executing the steps (b) to (g) until the correction test result is satisfactory.

Therefore, the test assembly 30 in the depth correction testing apparatus of the present invention can automatically shift and three targets can realize the functions of automatic shifting and automatic rotation angle, and in the testing state, the test assembly 30 and targets can be moved to the designated size position according to the setting requirements of the control panel 40 and the electronic control assembly 50 for testing. The four modules to be tested can synchronously realize automatic photographing under the control of the electric control assembly 50 at three different focusing distances, and the automatic control equipment integrating calculation and correction of library software in the electric control assembly 50 is dynamically linked after 18 pictures are shot by the modules to be tested.

The depth correction testing apparatus has a good feedback mechanism in use. For example, the depth correction test apparatus can automatically alarm through the control panel 40 when defective products occur in the test stage, and in addition, has a supervision function for the front-end process. For example, an AF (Auto Focus) uncorrected and lens shading uncorrected module can be checked and distinguished, so that confusion of defective products and good products can be effectively prevented;

in addition, the depth correction testing equipment realizes the operation flow through software, electric control and a mechanism, so that the degree of automation is improved; the use of the depth correction test apparatus also improves production efficiency, for example, the production time per pcs (i.e., pieces, representing a certain product unit number) is increased from 170s/pcs to 35s/pcs. On the other hand, the labor intensity of operators can be effectively reduced. For example, the original manual operation time is 17s/pcs by comparing the data, and the current operation time is only 6s/pcs. Meanwhile, the labor cost is reduced, and the utilization rate of operators is improved. For example, the working mode without using the depth correction testing device is 1 person and 1 station, and 1 person can control multiple stations after using the depth correction testing device.

It should be noted that, as those skilled in the art will understand, the testing step of the depth correction testing apparatus is not limited to using three targets, but can be implemented for at least two targets, and the present invention is not limited thereto.

According to another aspect of the present invention, the present invention further discloses a depth correction testing method for testing a module to be tested, the depth correction testing method comprising the following steps:

(A) The test software of the depth correction test equipment receives a starting instruction;

(B) Resetting the depth test equipment;

(C) The module to be tested is placed on a corresponding test component of the depth correction test device;

(D) Centering among the tests of the modules to be tested, namely adjusting the crossed center of each module to be tested to be consistent with the center of each mark point of the target from the image of the test interface;

(E) A control panel of the depth correction test equipment receives a starting instruction;

(F) Each sub-test part of the test assembly and the corresponding light source respectively move through the electric control assembly of the depth correction test equipment;

(G) Each module to be tested takes a picture in the running process of the depth correction test equipment;

(H) The photo data is transmitted to a depth calibration module of the electronic control assembly;

(I) And the depth calibration module performs data analysis and judges whether the detection of each module to be detected is qualified.

And (3) circularly executing the step (B) to the step (I) if the correction test result of the step (I) does not meet the standard, until the correction test result meets the standard.

It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are by way of example only and are not limiting. The objects of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been shown and described in the examples and embodiments of the invention may be modified or practiced without departing from the principles described.

Claims

1. The utility model provides a degree of depth correction test equipment for carry out degree of depth correction test to the module that awaits measuring, its characterized in that includes:

an equipment support connected to the housing,

a test assembly for testing the test object of the test object,

a control panel, and

the electronic control assembly is used for controlling the test assembly to perform depth correction test on the module to be tested through the control panel, the test assembly comprises a first test part, a second test part and a third test part, the test parts are sequentially arranged on the equipment support in parallel, the equipment support further comprises a plurality of rows of supporting parts perpendicular to a horizontal line and a substrate which is vertically connected with the supporting parts, the supporting parts are used for supporting the whole bearing of the depth correction test equipment, the substrate is used for supporting the test assembly, the test assembly can move on the substrate, the substrate comprises a first substrate, a second substrate and a third substrate which are parallel to each other and connected with the supporting parts, the first test part is arranged on the first substrate, the second test part is arranged on the third substrate, the third substrate is arranged on the electronic control assembly, the electronic control assembly is arranged on the third substrate, the electronic control assembly is arranged on the electronic control assembly, the electronic control assembly is subjected to test assembly is subjected to the test at an angle of 20 DEG, the electronic control assembly is used for carrying out the test; removing the third target to the outside of the field angle of the module to be tested, and rotating the second target angle of the second test part through the electric control assembly to perform image shooting at three angles of 0 degree, +30 degrees and-30 degrees respectively; and (3) removing the second target to the outside of the field angle of the module to be tested, and rotating the first target angle of the first test part through the electric control assembly to perform image shooting at three angles of 0 degree, +30 degrees and-30 degrees respectively.

2. The depth correction testing apparatus of claim 1, wherein each of the first, second, and third test components of the test assembly comprises a module frame, a rotary servo motor, an adjustment assembly, a slide assembly, a reticle mount, a light source, and a link shaft, wherein the module frame is coupled to the slide assembly and moves with the slide assembly on a corresponding substrate, the slide assembly is coupled to the corresponding substrate, the adjustment assembly is coupled to the module frame and is movable with the module frame, the rotary servo motor is coupled to the adjustment assembly, the link shaft is coupled to the adjustment assembly, the reticle mount is coupled to the link shaft, and the light source and the corresponding reticle are secured together by the reticle mount.

3. The depth correction testing apparatus of claim 2, wherein the module rack further comprises a rack plate and two sub-rack connectors, each of the sub-rack connectors being vertically connected to both ends of the rack plate.

4. A depth correction testing apparatus as claimed in claim 3, wherein each of said sub-rack connectors further comprises a linear rail and a chute matching said linear rail.

5. The depth correction testing apparatus of claim 4, wherein the sliding assembly further comprises two driving shafts, a sliding belt, and a fixing member, wherein two ends of the sliding belt are respectively connected to the two driving shafts, the driving shafts have motors for driving the sliding belt to rotate, one end of the fixing member is connected to the module frame, and the other end of the fixing member has a through hole penetrating through the sliding belt and is fixed to the sliding belt, so that the sliding belt can drive the module frame to slide along the substrate.

6. The depth correction testing apparatus of claim 5, wherein the adjustment assembly further comprises two sub-adjusters, wherein a fixed plate of one of the sub-adjusters is coupled to the sub-rack connector, wherein the other of the sub-adjusters further comprises an angle plate and a pointer.

7. The depth correction testing apparatus of claim 2, wherein the reticle mount further comprises a plate, a plurality of plate clamps connecting the plate and the link shaft, and a plurality of reticle clamps connected to the link shaft and capable of securing the reticle.

8. The depth correction testing apparatus of claim 1, wherein the size of the reticle mount of the first test component is numerically greater than the size of the reticle mount of the second test component, which is also numerically greater than the size of the reticle mount of the third test component.