CN108801924B - Optical test equipment - Google Patents
Optical test equipment Download PDFInfo
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- CN108801924B CN108801924B CN201810956448.9A CN201810956448A CN108801924B CN 108801924 B CN108801924 B CN 108801924B CN 201810956448 A CN201810956448 A CN 201810956448A CN 108801924 B CN108801924 B CN 108801924B
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- 238000012360 testing method Methods 0.000 title claims abstract description 119
- 230000003287 optical effect Effects 0.000 title claims abstract description 109
- 230000000007 visual effect Effects 0.000 claims abstract description 13
- 230000001681 protective effect Effects 0.000 claims description 17
- 238000001514 detection method Methods 0.000 claims description 9
- 230000006854 communication Effects 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000003190 augmentative effect Effects 0.000 description 1
- 230000007175 bidirectional communication Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
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- 230000003071 parasitic effect Effects 0.000 description 1
- 238000004092 self-diagnosis Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/9515—Objects of complex shape, e.g. examined with use of a surface follower device
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses an optical test device. The optical test equipment comprises a vision camera, an optical test camera, a sliding table component and a controller; the visual camera is configured to acquire position information of a product to be detected and output the position information to the controller; the optical test camera is configured for optical testing of a product to be tested, and the positions of the optical test camera and the visual camera are relatively fixed; the sliding table assembly comprises a driving device, and is configured to bear a product to be tested and enable the product to be tested to move to positions corresponding to the optical test camera and the vision camera; the controller is configured to operate the driving device according to the position information so as to enable the product to be tested to reach a position corresponding to the optical test camera. The optical test equipment provided by the invention can effectively improve the test precision of the product to be tested.
Description
Technical Field
The invention relates to the technical field of test equipment, in particular to optical test equipment.
Background
The popularity of VR (virtual reality)/AR (Augmented Reality ) products is that many VR/AR headsets appear on the market, and people can feel the pictures played by the devices very stereoscopically through the VR/AR headsets, so as to obtain very realistic experience. Among them, detection of the optical performance of VR/AR is an important task. In the mass production process of the product, the difference exists between the materials and the assembly, the structure difference and the positioning error of the product cannot be eliminated by the existing equipment, the optical performance test of the product can be influenced to a certain extent, and the test precision is reduced.
The conventional testing method is to use an optical camera to test the product, but the influence of the positioning error of the product and the structural error of the product on the test cannot be eliminated. Meanwhile, the product is tested through manual shading during testing, and the testing efficiency is low. The test is performed in a semi-shading state, and the external parasitic light causes interference to the test.
In addition, the product moves through the cylinder, and the movement accuracy is low and can not be positioned at multiple points. Meanwhile, when the sliding table assembly moves, most of the existing sliding table assemblies adopt relative encoders, when equipment is debugged, after emergency stop or restarting equipment after shutdown due to faults, the original point is required to be reset, the efficiency is low, point location errors are easy to occur, the sliding table assemblies adopt point location or pulse control, an original point resetting path cannot be defined after the equipment is electrified again, the problem that a camera collides is caused, and the position of the camera is changed or even damaged.
Therefore, a new solution is needed to solve these problems.
Disclosure of Invention
It is an object of the present invention to provide a new solution for an optical test device.
According to a first aspect of the present invention, there is provided an optical test apparatus comprising a vision camera, an optical test camera, a slide assembly and a controller; wherein,
the vision camera is configured to acquire position information of a product to be detected and output the position information to the controller;
the optical test camera is configured for optical testing of a product to be tested, and the positions of the optical test camera and the visual camera are relatively fixed;
the sliding table assembly comprises a driving device, and is configured to bear a product to be tested and enable the product to be tested to move to positions corresponding to the optical test camera and the vision camera;
the controller is configured to operate the driving device according to the position information so as to enable the product to be tested to reach a position corresponding to the optical test camera.
Optionally, the sliding table component is a three-axis sliding table, and the three-axis sliding table comprises an X-axis sliding table, a Y-axis sliding table and a Z-axis sliding table; wherein:
the Y-axis sliding table is arranged on the sliding block of the X-axis sliding table and can slide along the X-axis, the Z-axis sliding table is arranged on the sliding block of the Y-axis sliding table and can slide along the Y-axis, the X-axis sliding table, the Y-axis sliding table and the Z-axis sliding table all comprise driving devices, and a product to be tested is arranged on the sliding block of the Z-axis sliding table.
Optionally, the driving device comprises a communication port, and is connected with the controller through a network cable.
Optionally, the driving device comprises a motor and a driver for driving the motor, and the driver comprises an EtherNet/IP communication port.
Optionally, the slip assembly includes an absolute encoder configured to obtain positional information of the product to be tested.
Optionally, the positioning device is arranged on the sliding table assembly, and the positioning device is configured to bear and position the product to be tested.
Optionally, the vision camera and the optical test camera are arranged on the respective camera sliding tables.
Optionally, the camera sliding table is a six-axis sliding table.
Optionally, the device further comprises a protective cover, wherein the protective cover comprises an opening and is provided with a sliding door capable of closing the opening; the vision camera, the optical test camera and the controller are accommodated in the protective cover, the optical test equipment comprises a feeding station positioned outside the protective cover and a test station positioned in the protective cover, the opening is positioned between the feeding station and the test station, and the sliding table component is configured to enable a product to be tested to be transferred between the test station and the feeding station.
Optionally, the system further comprises an industrial personal computer, wherein the industrial personal computer is configured to convert the position information into point location information and transmit the point location information to the controller.
According to the embodiment of the invention, the testing precision of the product to be tested can be effectively improved.
Other features of the present invention and its advantages will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic diagram of an optical detection device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an execution portion of a test device provided in an embodiment of the present invention;
FIG. 3 is a schematic illustration of a shield provided by an embodiment of the present invention;
FIG. 4 is an internal schematic view of a work table provided by an embodiment of the present invention;
fig. 5 is a schematic diagram of a six-axis sliding table according to an embodiment of the present invention.
Reference numerals illustrate:
the device comprises a 1-workbench, a 2-protective cover, a 3-test equipment executing part, a 4-display, a 5-X axis sliding table, a 6-Y axis sliding table, a 7-Z axis sliding table, an 8-positioning device, a 9-linear guide rail, a 10-camera sliding table, a 101-first crossed roller type sliding table, a 102-second crossed roller type sliding table, a 103-goniometer sliding table, a 104-rotating sliding table, an 11-optical test camera, a 12-vision camera, a 13-sliding door, a 14-driving cylinder, a 15-sliding door guide rail, a 16-operation button, a 17-emergency stop button, a 18-reset button, a 19-three-color indicator lamp, a 20-driver, a 21-controller and a 22-electrical control module.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise.
The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
The present invention provides an optical test apparatus, as shown in fig. 1-4, comprising a vision camera 12, an optical test camera 11, a slipway assembly and a controller 21. Specifically, the vision camera 12 is used to acquire positional information of a product to be measured, and output the positional information to the controller 21. The optical test camera 11 is used for performing optical test on the product to be tested, and the positions of the optical test camera 11 and the vision camera 12 are relatively fixed. The sliding table assembly comprises a driving device and is used for bearing a product to be tested and enabling the product to be tested to move to positions corresponding to the optical test camera 11 and the vision camera 12. The controller 21 is connected with the vision camera 12, the optical test camera 11 and the driving device, and the controller 21 is used for enabling the driving device to work according to the position information of the product to be tested obtained by the vision camera 11 so that the product to be tested reaches the position corresponding to the optical test camera.
When testing, firstly placing a product to be tested on a sliding table component, for example, the product to be tested is a VR module, then utilizing a vision camera 12 to obtain the position of the optical center of a lens in the VR module so as to obtain the point position information of the optical center of the lens relative to the optical center of the vision camera, for example, the lens is a Fresnel lens, utilizing the vision camera 12 to shoot the VR module so as to obtain the Fresnel stripe imaging of the lens, and determining the position information of the lens center on the vision camera 12 according to the Fresnel stripe imaging, wherein the point position information of the optical center of the vision camera 12 is set as a fixed value in advance, so that the point position information of the lens center can be obtained. Furthermore, since the positions of the vision camera 12 and the optical test camera 11 are relatively fixed, the point location information of the optical center of the vision camera 12 and the optical center of the optical test camera 11 is relatively fixed, so that the distance between the optical center of the lens and the optical center of the optical test camera 11 can be calculated by using the controller 21, and the controller 21 controls the driving device to move so as to drive the VR module to move, so that the optical center of the lens and the optical center of the optical test camera 11 are overlapped, and the optical test camera 11 can perform optical test on the lens.
According to the optical detection device provided by the invention, when the VR module waits for the product to be detected to carry out optical detection, the visual camera 12 can be utilized to obtain the point location information of the product to be detected first, and then the controller 21 is utilized to control the sliding table assembly to adjust the position of the product to be detected, so that the optical center of the product to be detected is aligned with the optical center of the optical test camera 11, the position error generated when the product to be detected is placed on the sliding table assembly and the errors caused by the structures of different products to be detected are avoided, and the accuracy of the test result of the optical test camera is improved.
As shown in fig. 2, the sliding table is a three-axis sliding table, and the three-axis sliding table includes an X-axis sliding table 5, a Y-axis sliding table 6, and a Z-axis sliding table 7. The Y-axis sliding table 6 is arranged on the sliding block of the X-axis sliding table 5 and can slide along the X-axis, the Z-axis sliding table 7 is arranged on the sliding block of the Y-axis sliding table 6 and can slide along the Y-axis, and the product to be tested is arranged on the sliding block of the Z-axis sliding table 7. In one embodiment, the Z-axis sliding table 7 is further provided with a positioning device 8, and the positioning device 8 is used for bearing and positioning the product to be tested on the sliding block of the Z-axis sliding table 7.
Any one of the X-axis sliding table, the Y-axis sliding table and the Z-axis sliding table comprises a base, a driving device, a screw rod, a guide rail and a sliding block. The drive, lead screw and guide rail are arranged on the base. The driving means comprises a driver 20 and a motor, the driver 20 being arranged to control the rotation of the motor. An output shaft of the motor is connected with the screw rod so as to drive the screw rod to rotate. One end of the screw rod opposite to the motor is connected with the base through a bearing so as to reduce friction during rotation. The guide rail is arranged in parallel with the screw rod. The guide rail plays a role in guiding the sliding block, and the guide rail can prevent the sliding block from rotating in the sliding process.
For example, the screw is a ball screw, and the guide rail is a ball circulation type linear guide rail. The ball screw and the ball circulation linear guide rail are both provided with circulating balls. The circulating ball can obviously reduce the friction effect of the sliding block and the lead screw as well as the sliding block and the guide rail, so that the sliding block has small friction resistance and slides rapidly.
When in operation, the motor rotates forward and backward so as to drive the ball screw to rotate. The sliding block slides along the guide rail under the pushing of the ball screw, so that the position of the sliding block is adjusted.
The drive 20 includes a communication port. The communication port is connected with the controller 21 through a network cable to control the motors of the sliding tables by the controller 21. For example, the drivers 20 include EtherNet/IP communication ports, and the drivers 20 of the respective slipways are connected to the controller 21 through network lines via the EtherNet/IP communication ports, so as to implement bidirectional communication between the drivers 20 and the controller 21, thereby implementing real-time interaction of point location information.
Further, each slip includes an encoder. The encoder comprises an incremental encoder and an absolute encoder, wherein the incremental encoder cannot find a preparation position after power failure, and the incremental encoder is accurate after returning to an original point and a zero point. The invention preferably adopts an absolute encoder, and the absolute encoder does not need to reset the original point when the equipment is debugged, stopped in emergency or restarted after stopping due to faults, so that the working time can be shortened, and the production cost can be reduced. Specifically, the X-axis sliding table, the Y-axis sliding table and the Z-axis sliding table all include absolute encoders, so that each sliding table can interact with the controller 21 in point location information.
In one embodiment, the controller 21 is a PLC (programmable logic controller), which is a digital operation electronic system designed specifically for application in an industrial environment. It adopts a programmable memory, in its interior is stored the instruction for executing logic operation, sequence control, timing, counting and arithmetic operation, etc. and utilizes digital or analog input and output to control various mechanical equipments or production processes. Because the PLC mostly adopts a single-chip microcomputer, the integration level is high, and the reliability of the system is improved by adding a corresponding protection circuit and a self-diagnosis function; the PLC is programmed by adopting a relay control ladder diagram and command sentences, the number of the PLC is much less than that of microcomputer instructions, and the PLC is simple to program; when the device is used, the detection device is only required to be correctly connected with the motor and the I/O interface terminal of the PLC, so that the device can work normally and is convenient to install; since the control of the PLC is performed by the program control, the operation speed is fast. The present invention is not limited to the specific type of controller 21.
In one embodiment, the optical detection device further includes an industrial personal computer, the vision camera 12 collects the position information of the product to be tested and uploads the position information to the industrial personal computer, the industrial personal computer analyzes the data and then sends the point position information to the controller 21, and the controller 21 controls the motors of the X-axis sliding table 5, the Y-axis sliding table 6 and the Z-axis sliding table 7 to enable the product to be tested to move to the position corresponding to the optical test camera 11, so that the test precision is improved.
Furthermore, the optical test device comprises a protective cover 2, the protective cover 2 comprising an opening and being provided with a sliding door 13 capable of closing the opening. The test equipment executing part 3, namely the vision camera 12, the optical test camera 11 and the controller 21, is accommodated in the protective cover 2, the optical test equipment comprises a feeding station positioned outside the protective cover 2 and a test station positioned in the protective cover 2, an opening is positioned between the feeding station and the test station, and a sliding table is configured to enable a product to be tested to be transferred between the test station and the feeding station.
Specifically, as shown in fig. 3, the sliding door 13 is disposed on a sliding door rail 15, and the driving cylinder 14 is used for driving the sliding door 13 to slide left and right on the sliding door rail 15, so as to achieve the purpose of automatically opening and closing the sliding door 13, and further achieve the purpose of shading light. When testing is performed, the sliding door 13 is opened under the action of the driving cylinder 14, the sliding table passes through the opening to move to a feeding station outside the protective cover 2, then a product to be tested is placed on the positioning device 8, after the feeding is completed, the sliding table passes through the opening to move to a detection station inside the protective cover 2, then the sliding door 13 is closed under the action of the driving cylinder 14, so that the product to be tested is in a testing environment without external light interference, and the testing precision of the optical testing equipment is improved.
In one embodiment, the protective cover 2 is provided with an operation button 16, an emergency stop button 17, a reset button 18, a three-color indicator light 19 and a display 4. Wherein the operation button 16 is a button for controlling the operation of the device, the emergency stop button 17 is a device stop button for emergently stopping the device, the reset button 18 is used for resetting the device after the emergency stop of the device, the three-color indicator lamp 19 is used for indicating the state of the device, and the display 4 is used for displaying the test result. The buttons, the indicator lights and the display are arranged, so that the equipment can be conveniently operated, and the testing efficiency can be improved.
As shown in fig. 1 and 4, the optical test apparatus further includes a stage 1, a protection cover 2 is provided on the stage 1, a test apparatus executing section 3 is provided on the stage 1 and covered by the protection cover 2, and an electrical control module 22 is accommodated in a cavity formed by the stage 1. The electrical control module 22 includes electrical components such as a controller 21 and a switching power supply, and is used for controlling the device to operate according to a preset operation.
In addition, the optical detection device further comprises a camera sliding table 10, and a vision camera 12 and an optical test camera 11 are arranged on the respective camera sliding tables 10. By the camera slide table 10, the positions of the optical test camera 11 and the vision camera 12 can be adjusted. After the position adjustment of the optical test camera 11 and the visual camera 12 is completed, the point location information of the optical test camera 11 and the visual camera 12 is output to the controller 21, and after the controller 21 obtains the point location information of the product to be tested relative to the visual camera 12, the point location information of the product to be tested relative to the optical test camera 11 can be indirectly obtained because the relative positions of the optical test camera 11 and the visual camera 12 are fixed, and then the controller 21 sends a signal to the motor according to the point location information of the product to be tested relative to the optical test camera 11, so that the product to be tested moves to the position corresponding to the optical test camera 11, namely, the optical center of the optical test camera 11 is aligned with the optical center of the product to be tested.
Alternatively, the camera slide table 10 is a six-axis slide table, and the positions of the optical test camera 11 and the vision camera 12 can be adjusted more accurately from a plurality of orientations. As shown in fig. 5, the six-axis sliding table includes a first cross roller type sliding table 101, a second cross roller type sliding table 102, a goniometer sliding table 103, and a rotation sliding table 104, and the camera is connected with the rotation sliding table 104. Specifically, the first crossed roller type sliding table 101 is used for performing linear adjustment on the camera in the Z-axis direction, the second crossed roller type sliding table 102 is used for performing linear adjustment on the camera in the X-axis direction and the Y-axis direction, the goniometer sliding table 103 is used for enabling the camera to rotate around the X-axis direction and the Y-axis direction to perform angle adjustment, and the rotary sliding table 104 is used for enabling the camera to rotate around the Z-axis direction to perform angle adjustment, so that six-axis adjustment on the camera is achieved.
The installation sequence of the combination of the first cross roller type sliding table 101, the second cross roller type sliding table 102, the goniometer sliding table 103 and the rotary sliding table 104 when forming a six-axis sliding table can be adjusted according to needs, for example, the first cross roller type sliding table 101 and the second cross roller type sliding table 102 are arranged above the goniometer sliding table 103 and the rotary sliding table 104, and the camera is connected with the second cross roller type sliding table 102, which is not limited in the invention.
Optionally, the first cross roller type sliding table 101 is of model ZLPG60, the second cross roller type sliding table 102 is of model XYSPG60, the goniometer sliding table 103 is of model GPWG60-75, the rotary sliding table 104 is of model RPG60, and those skilled in the art can select other types of sliding tables as required, which is not limited in the present invention.
When the optical test equipment provided by the invention works, the sliding door 13 is opened by utilizing the driving cylinder 14, then a product to be tested is placed on the positioning device 8, and then the sliding door is closed for testing. Firstly, the vision camera 12 collects the position information of the product to be tested and uploads the position information to the industrial personal computer, secondly, the industrial personal computer analyzes data and then sends the point position information to the PLC, and then the PLC controls the motors of the X-axis sliding table 5, the Y-axis sliding table 6 and the Z-axis sliding table 7 to enable the product to be tested to move to the corresponding position of the optical test camera 11, and finally, the test is carried out. After the test is completed, the sliding door 13 is automatically opened, and the X-axis sliding table 5, the Y-axis sliding table 6 and the Z-axis sliding table 7 are automatically reset to the initial positions. The state of the equipment in the test process can utilize the three-color indicator lamp 19, and the test result can be displayed on the display 4, so that the working state of the equipment can be conveniently observed, and if the equipment fails, the equipment can be timely found.
The invention can effectively improve the testing precision of equipment, the testing efficiency and the equipment stability, can meet the optical performance test of the VR product waiting to be tested, has the characteristics of high efficiency, high precision, high reliability and convenient product taking and placing, and can meet the production test requirements of factories.
While certain specific embodiments of the invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (7)
1. The optical test equipment is characterized by comprising a vision camera, an optical test camera, a sliding table assembly and a controller; wherein,
the vision camera is configured to obtain position information of an optical center of a lens of a product to be measured;
the system comprises a visual camera, an industrial personal computer, a controller and a camera, wherein the industrial personal computer is configured to convert the position information into point position information of the optical center of the lens relative to the optical center of the visual camera, and transmit the point position information to the controller;
the optical test camera is configured to perform optical test on a product to be tested, the positions of the optical test camera and the visual camera are relatively fixed, and the optical center of the visual camera and the point position information of the optical center of the optical detection camera are relatively fixed;
the sliding table assembly comprises a driving device, and is configured to bear a product to be tested and enable the product to be tested to move to positions corresponding to the optical test camera and the vision camera;
the controller is configured to operate the driving device according to the point location information so as to enable the product to be tested to reach a position corresponding to the optical test camera, and can calculate the distance between the optical center of the lens of the product to be tested and the optical center of the optical test camera according to the point location information of the product to be tested and the optical test camera, and control the driving device to move so as to drive the product to be tested to move, so that the optical center of the lens of the product to be tested overlaps with the optical center of the optical test camera;
the visual camera and the optical test camera are arranged on the respective camera sliding tables, and the camera sliding tables are six-axis sliding tables; the six-axis sliding table comprises a first crossed roller type sliding table, a second crossed roller type sliding table, a goniometer sliding table and a rotary sliding table, and the camera is connected with the rotary sliding table; the first crossed roller type sliding table is used for conducting linear adjustment on the Z-axis direction on the camera, the second crossed roller type sliding table is used for conducting linear adjustment on the X-axis direction and the Y-axis direction on the camera, the goniometer sliding table is used for enabling the camera to rotate around the X-axis direction and the Y-axis direction to conduct angle adjustment, and the rotating sliding table is used for enabling the camera to rotate around the Z-axis direction to conduct angle adjustment.
2. The optical test apparatus of claim 1, wherein the slipway assembly is a triaxial slipway comprising an X-axis slipway, a Y-axis slipway and a Z-axis slipway; wherein:
the Y-axis sliding table is arranged on the sliding block of the X-axis sliding table and can slide along the X-axis, the Z-axis sliding table is arranged on the sliding block of the Y-axis sliding table and can slide along the Y-axis, the X-axis sliding table, the Y-axis sliding table and the Z-axis sliding table all comprise driving devices, and a product to be tested is arranged on the sliding block of the Z-axis sliding table.
3. The optical test device of claim 2 wherein the drive means comprises a communication port connected to the controller by a network cable.
4. An optical test device according to claim 3, wherein the drive means comprises a motor and a driver for driving the motor, the driver comprising an EtherNet/IP communication port.
5. The optical test device of claim 2, wherein the slip assembly includes an absolute encoder configured to obtain positional information of the product under test.
6. The optical testing apparatus of claim 1, further comprising a positioning device disposed on the slipway assembly, the positioning device configured to carry and position the product under test.
7. The optical test device of claim 1, further comprising a protective cover comprising an opening and provided with a sliding door capable of closing the opening; the vision camera, the optical test camera and the controller are accommodated in the protective cover, the optical test equipment comprises a feeding station positioned outside the protective cover and a test station positioned in the protective cover, the opening is positioned between the feeding station and the test station, and the sliding table component is configured to enable a product to be tested to be transferred between the test station and the feeding station.
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| CN201810956448.9A CN108801924B (en) | 2018-08-21 | 2018-08-21 | Optical test equipment |
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| CN201810956448.9A CN108801924B (en) | 2018-08-21 | 2018-08-21 | Optical test equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109443701B (en) * | 2018-11-23 | 2024-10-01 | 歌尔股份有限公司 | Positioning equipment and control system for screen test |
| CN111426943B (en) * | 2020-05-06 | 2024-12-27 | 杭州长川科技股份有限公司 | TFT product testing equipment |
| CN112362094B (en) * | 2020-09-17 | 2022-08-09 | 深圳市行知达科技有限公司 | Multi-channel test system |
| CN113533208A (en) * | 2021-07-29 | 2021-10-22 | 昆山世纪三友测量技术有限公司 | A splicable one-button measuring instrument |
| CN114296393B (en) * | 2021-12-29 | 2024-01-16 | 北京半导体专用设备研究所（中国电子科技集团公司第四十五研究所） | Motion table zeroing method and device, electronic equipment and storage medium |
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