CN108153011A - A kind of optical detection apparatus and its control method - Google Patents
A kind of optical detection apparatus and its control method Download PDFInfo
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- CN108153011A CN108153011A CN201810126286.6A CN201810126286A CN108153011A CN 108153011 A CN108153011 A CN 108153011A CN 201810126286 A CN201810126286 A CN 201810126286A CN 108153011 A CN108153011 A CN 108153011A
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
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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
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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
- G01N2021/9513—Liquid crystal panels
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- Chemical & Material Sciences (AREA)
- Nonlinear Science (AREA)
- Health & Medical Sciences (AREA)
- Optics & Photonics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
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- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
Abstract
The embodiment of the present invention provides a kind of optical detection apparatus and its control method, is related to technical field of liquid crystal display, can solve the problem of that the higher occupied space of cost of optical detection apparatus in the prior art is larger.The optical detection apparatus includes base station;Multiple clamping units, multiple clamping units are arranged on base station, and each clamping unit can clamp a display device to be detected, and the claming angle of each clamping unit is adjusted;Image acquisition units, image acquisition units are arranged on the top of clamping unit, for acquiring the gray level image of display device to be detected;Control unit, control unit are all connected with image acquisition units, multiple clamping units, and control unit is used to control the claming angle of each clamping unit according to the gray level image that image acquisition units acquire.The present invention is used to detect display device.
Description
Technical field
The present invention relates to technical field of liquid crystal display more particularly to a kind of optical detection apparatus and its control methods.
Background technology
In the production process of display device, the quality testing of display picture will be usually carried out before product export, is judged
Whether it reaches the requirement of Customer Standard.In the prior art usually using AOI (Automated Optical Inspection,
Automatic optics inspection) equipment to display device carry out optical detection.With reference to shown in figure 1 and Fig. 2, it is contemplated that cost and space etc. because
Element, industry is generally using high-resolution CCD (Charge-coupled Device, charge coupling device) camera lens 02 to multiple
Display device 01 is carried out at the same time optical detection, although existing CCD camera lenses 02 can realize auto-focusing, actually detected process
In 01 central point of display device deviateed due to 02 central point of CCD camera lenses, the fringe region of display device 01 to CCD camera lenses 02 away from
From difference, the grey value difference for causing different zones in the gray level image 03 after the imaging of display device 01 is larger, so as to influence to lack
Fall into analysis.
Traditional solution is to increase the quantity of CCD camera lenses 02, i.e., each product corresponds to a CCD camera lens 02, to protect
The central point for demonstrate,proving each CCD camera lenses 02 and product is consistent, and such scheme not only increases cost but also occupied space is larger.
Invention content
The embodiment of the present invention provides a kind of optical detection apparatus and its control method, can solve optics in the prior art
The problem of cost of detection device is higher, and occupied space is larger.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that:
On the one hand, the embodiment of the present invention provides a kind of optical detection apparatus, including:Base station;Multiple clamping units, Duo Gesuo
It states clamping unit to be arranged on the base station, each clamping unit can clamp a display device to be detected, and every
The claming angle of a clamping unit is adjusted;Image acquisition units, it is single that described image collecting unit is arranged on the clamping
The top of member, for acquiring the gray level image of the display device to be detected;Control unit, described control unit and described image
Collecting unit, multiple clamping units are all connected with, and described control unit is used for the ash acquired according to described image collecting unit
Spend the claming angle of each clamping unit of image control.
Optionally, the clamping unit include for clamp the fixture of the display device to be detected, be used to support it is described
The first support bar of the central area of display device to be detected and the fringe region for being used to support the display device to be detected
Multiple second support bars;The first support bar and the second support bar are vertical with the upper surface of the base station;It is described
The upper end of first support bar and the second support bar is both provided with the connector of flexible connection, the institute in the second support bar
Connector is stated to connect with the fixture;The lower end of the second support bar and the upper surface of the base station are connected by retractable structure
It connects, the retractable structure can stretch along the length direction of the second support bar, the second support bar is raised and lowered
Height;Described control unit is used for each scalable knot of gray level image control acquired according to described image collecting unit
The flexible height of structure, to control the claming angle of each fixture.
Optionally, the fixture is rectangular configuration, and the clamping unit includes two second support bars, described in two
Second support bar is respectively used to support the point midway on the adjacent both sides of the fixture.
Optionally, described control unit is specifically used for:The adjusting angle of the fixture is obtained according to the first formula;Described
One formula is:X=(a-b) * δ-α+Δ W;Wherein, for X to adjust angle, a and b are respectively opposite in the gray level image two
The gray value of the midpoint of side, δ are default transformation ratio, and α is currently located the angle of plane and horizontal plane, Δ for the fixture
W is predesigned compensation amount;The flexible height of the corresponding retractable structure is controlled according to the adjusting angle of the fixture.
Optionally, the central point of the fixture in multiple clamping units is to the distance phase of described image collecting unit
Deng.
Optionally, the retractable structure is lifting motor.
Optionally, the connector is universal ball end connector.
Optionally, the backlight for providing point lamp source to the display device to be detected is additionally provided on the fixture
Source.
On the other hand, the embodiment of the present invention provides a kind of control for above-mentioned optical detection apparatus described in any one
Method, the control method include:Obtain the gray-scale map of multiple display devices to be detected in multiple clamping units
Picture;The claming angle of each clamping unit is controlled according to the gray level image.
Optionally, it is described to be controlled often according to the gray level image when the clamping unit includes the retractable structure
The claming angle of a clamping unit includes:The flexible height of each retractable structure is controlled according to the gray level image
Degree, to control the claming angle of each fixture.
Optical detection apparatus provided in an embodiment of the present invention and its control method, the optical detection apparatus include base station;
Multiple clamping units, multiple clamping units are arranged on base station, and each clamping unit can clamp a display to be detected
Part, and the claming angle of each clamping unit is adjusted;Image acquisition units, image acquisition units are arranged on the upper of clamping unit
Side, for acquiring the gray level image of display device to be detected;Control unit, control unit and image acquisition units, multiple clampings
Unit is all connected with, and control unit is used to control the holding angle of each clamping unit according to the gray level image that image acquisition units acquire
Degree.Compared to the prior art, optical detection apparatus provided in an embodiment of the present invention is by setting the holding angle of each clamping unit
Degree is adjustable, and before optical detection is carried out, control unit adjusts this according to the gray level image of the display device to be detected of acquisition
The claming angle of the corresponding clamping unit of display device to be detected, i.e., by the corresponding clamping unit in side brighter in gray level image
One end adjusts downwards certain angle, and one end of the corresponding clamping unit in side dark in gray level image is adjusted upward certain angle
Degree so that the angle of inclination of the display device to be detected of clamping unit clamping changes, is carrying out practical optics in this way
During detection, the difference of the gray value of different zones can become smaller in the gray level image after the display device imaging to be detected, so as to just
In defect analysis.Multiple displays to be detected can be realized due to not needing to setting multiple images collecting unit in the embodiment of the present invention
Device efficient optical detection simultaneously, thus the cost of optical detection apparatus is reduced, reduce the occupancy of optical detection apparatus
Space.
Description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the schematic diagram for the gray level image that the CCD camera lenses that the prior art provides acquire display device to be detected;
Fig. 2 is the gray level image of the display device to be detected of CCD camera lenses acquisition that the prior art provides;
Fig. 3 is the structure diagram of optical detection apparatus provided in an embodiment of the present invention;
Fig. 4 is the supporting point distribution that first support bar provided in an embodiment of the present invention and second support bar support the fixture
Schematic diagram;
Fig. 5 is the structure diagram of same display device different visual angles to be detected provided in an embodiment of the present invention;
Fig. 6 is the control method flow chart of optical detection apparatus provided in an embodiment of the present invention.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the present invention provides a kind of optical detection apparatus, as shown in Figure 3 and Figure 4, including:Base station 11;Multiple clampings
Unit, multiple clamping units are arranged on base station 11, and each clamping unit can clamp a display to be detected
Device, and the claming angle of each clamping unit is adjusted;Image acquisition units, described image collecting unit are arranged on institute
The top of clamping unit is stated, for acquiring the gray level image of the display device to be detected;Control unit, described control unit with
Described image collecting unit, multiple clamping units are all connected with, and described control unit is used for according to described image collecting unit
The claming angle of each clamping unit of gray level image control of acquisition.
Wherein, display device to be detected is the display device for needing to detect, and can be LCD (Liquid Crystal
Display, liquid crystal display) or OLED (Organic Light-Emitting Diode, Organic Light Emitting Diode) display dresses
It puts, it is not limited in the embodiment of the present invention.
In practical applications, described image collecting unit is generally CCD camera lenses.
When carrying out optical detection to product, display device to be detected is usually placed into clamping unit using manipulator
On, thus for the ease of placing, clamping unit original state is generally horizontality, i.e., multiple clamping units clamp to be detected
Display device is located in same level, and image acquisition units are located at a certain position of the top of multiple display devices to be detected
It puts.After the gray level image for collecting multiple display devices to be detected in image acquisition units, control unit can be according to each ash
The difference spent between the gray value of image different zones adjusts the claming angle of the corresponding clamping unit.It specifically, can
One end of the corresponding clamping unit in side brighter in gray level image is adjusted downwards certain angle, by gray level image dark one
One end of the corresponding clamping unit in side is adjusted up certain angle, is maked corrections with this, to reduce different zones in gray level image
Gray value between difference.Wherein, can be preset angle to the adjusting angle that the claming angle of clamping unit is adjusted
Adjustment angle obtained from degree or the difference between the gray value of different zones in gray level image carry out analysis calculating
Degree, it is not limited in the embodiment of the present invention.
So, compared to the prior art, optical detection apparatus provided in an embodiment of the present invention is by setting each folder
The claming angle for holding unit is adjusted, and before optical detection is carried out, control unit is according to the ash of the display device to be detected of acquisition
Degree image adjusts the claming angle of the corresponding clamping unit of the display device to be detected, i.e., by side pair brighter in gray level image
The one end for the clamping unit answered adjusts downwards certain angle, by one end of the corresponding clamping unit in side dark in gray level image to
Upper adjustment certain angle so that the angle of inclination of display device to be detected of clamping unit clamping changes, in this way into
During the optical detection of row reality, the difference meeting of the gray value of different zones in the gray level image after display device imaging to be detected
Become smaller, consequently facilitating defect analysis.Due to do not needed in the embodiment of the present invention setting multiple images collecting unit can be realized it is more
The efficient optical detection simultaneously of a display device to be detected, thus the cost of optical detection apparatus is reduced, reduce optics inspection
Survey the occupied space of device.
Further, refering to what is shown in Fig. 3, the clamping unit includes the fixture for clamping the display device to be detected
12nd, it is used to support the first support bar 13 of the central area of the display device to be detected and is used to support described to be detected
Multiple second support bars 14 of the fringe region of display device;First support bar 13 and second support bar 14 are upper with base station 11
Surface is vertical;The upper end of first support bar 13 and second support bar 14 is both provided with the connector 15 of flexible connection, the second support
Connector 15 on bar 14 is connect with fixture 12;The lower end of second support bar 14 passes through retractable structure with the upper surface of base station 11
16 connections, retractable structure 16 can stretch along the length direction of second support bar 14, second support bar 14 is raised and lowered
Highly;Described control unit is used to control each retractable structure 16 according to the gray level image that described image collecting unit acquires
Flexible height, to control the claming angle of each fixture 12.
The embodiment of the present invention does not limit concrete shape, size of fixture 12 etc., and those skilled in the art can root
It is set according to actual conditions.Due to fixture 12 be for clamping display device to be detected, thus in practical applications, fixture
Shape and size of 12 shape and size generally with display device to be detected are adapted, in this way convenient for clamping display to be detected
Part.It should be noted that fixture 12 is generally detachably connected with connector 15, be free to replace various sizes of folder in this way
Tool 12, to detect various sizes of display device to be detected, so as to improve the scope of application of optical detection apparatus.Wherein, it connects
Part 15 can generally select universal ball end connector.
In practical applications, the central point of the fixture 12 in multiple clamping units can be set to be acquired to described image
The distance of unit is equal, can reduce the difference of the gray value of different zones in the gray level image of display device imaging to be detected in this way
It is different.
Refering to what is shown in Fig. 3, first support bar 13 and second support bar 14 adjustable angle with connector 15 thereon respectively;
First support bar 13 is used to support the central area of display device to be detected, and the bottom end of first support bar 13 is not provided with scalable knot
Structure 16, the i.e. height of first support bar 13 can not be adjusted, and can ensure the central point position of multiple fixtures 12 in base station 11 in this way
In in same level;Second support bar 14 is used to support the fringe region of display device to be detected, the bottom of second support bar 14
End is provided with retractable structure 16, i.e. the height of first support bar 13 can be adjusted by upper and lower stretch of retractable structure 16
Section, can realize the adjusting of the claming angle of fixture 12 in this way, be further reduced the gray level image of display device imaging to be detected
The difference of the gray value of middle different zones.Wherein, retractable structure 16 can generally select lifting motor.
The embodiment of the present invention does not limit the specific setting quantity of second support bar 14 and specific installation position.Compared with
Good, refering to what is shown in Fig. 4, fixture 12 is rectangular configuration, the clamping unit includes two second support bars 14, two second
Strut 14 is respectively positioned at the underface of the point midway of 12 adjacent edge of fixture;Two second support bars 14 are respectively used to support fixture
The point midway on 12 adjacent both sides.The supporting point of first support bar 13 and second support bar 14 on fixture 12 forms triangle row
Mode for cloth, the position form of the supporting point by changing second support bar 14 can realize the claming angle of adjustment fixture 12
Purpose, so as to relatively simple mechanical linkage, realize the adjustment of 12 more complicated angle of fixture.
It should be noted that when display device to be detected not included backlight, also set up on fixture 12 for to be checked
The backlight 17 that display device provides point lamp source is surveyed, to carry out optical detection to display device to be detected.
It, can be by acquiring display device to be detected after display device to be detected is placed into the fixture 12 of base station 11
Gray level image carries out algorithm correction according to the gray level image to the angle of inclination of the display device to be detected of different location, i.e., by
Gray value in gray level image converses the adjusting angle of fixture 12.Specifically, described control unit is specifically used for:According to first
Formula obtains the adjusting angle of fixture 12;First formula is:X=(a-b) * δ-α+Δ W;Wherein, X for adjust angle, a and
B is respectively the gray value of the midpoint of two sides opposite in the gray level image, and δ is default transformation ratio, and α is fixture 12
The angle of plane and horizontal plane is currently located, Δ W is predesigned compensation amount;It is stretched according to the control of the adjusting angle of fixture 12 is corresponding
The flexible height of shrinking structure 16.
In practical applications, preset transformation ratio δ generally with 12 local environment illumination of fixture, image acquisition units with it is to be checked
The factors such as distance, the lens properties of image acquisition units of survey display device are related, and it is not limited in the embodiment of the present invention.By
In optical detection apparatus, the computational accuracy of each component, control accuracy etc. are unable to reach perfect condition in practical operation, thus set
Δ W is put as a compensation rate to this, the embodiment of the present invention does not limit the concrete numerical value of Δ W.
Described control unit can be integrated in AOI equipment PLC (Programmable Logic Controller,
Programmable logic controller (PLC)) or held independently of the PC (personal computer, personal computer) of AOI equipment,
Or can also be simultaneously comprising PLC and PC ends, exemplary, what control unit to be realized carries out processing analysis to gray level image,
Obtaining the function of adjustings angle of fixture can be completed by PC ends, control unit to be realized according to adjusting angle to scalable
The function that structure is controlled can be completed by PLC, and it is not limited in the embodiment of the present invention.
When the long side for calculating display device to be detected is corresponding adjusts angle, with reference to shown in (a) in figure 5, a1 and b1 divide
Not Wei two opposite long sides of the display device to be detected midpoint gray value, α 1 be the display device to be detected short side
The angle of plane and horizontal plane is currently located, the long side of display device to be detected is corresponding to adjust angle X1=(a1-b1) * δ-α 1
+ΔW;When the short side for calculating display device to be detected is corresponding adjusts angle, with reference to shown in (b) in figure 5, a2 and b2 are respectively
The gray value of the midpoint of two opposite short sides of the display device to be detected, long side current institutes of the α 2 for display device to be detected
In plane and the angle of horizontal plane, the short side of display device to be detected is corresponding to adjust angle X2=(a2-b2) * δ-α 2+ Δs W.
Get long side it is corresponding adjust angle X1 and short side is corresponding adjust angle X2 after, according to adjust angle X1 and
The flexible height for the 14 corresponding retractable structure 16 of second support bar that angle X2 is adjusted respectively below long side and short side is adjusted, from
And realize the adjustment to the claming angle of fixture 12.
Another embodiment of the present invention provides a kind of control method for above-mentioned optical detection apparatus described in any one,
As shown in fig. 6, the control method includes:
Step 601, the gray level image for obtaining multiple display devices to be detected in multiple clamping units;
Step 602, the claming angle that each clamping unit is controlled according to gray level image.
Further, it is described to be controlled according to the gray level image when the clamping unit includes the retractable structure
The claming angle of each clamping unit includes:The flexible height of each retractable structure is controlled according to the gray level image
Degree, to control the claming angle of each fixture.
The embodiment of the present invention is by obtaining the gray level images of multiple display devices to be detected in multiple clamping units, then
The claming angle of corresponding clamping unit is controlled according to gray level image, i.e., it is the corresponding clamping in side brighter in gray level image is single
One end of member adjusts downwards certain angle, and one end of the corresponding clamping unit in side dark in gray level image is adjusted upward centainly
Angle so that the angle of inclination of the display device to be detected of clamping unit clamping changes, is carrying out practical light in this way
When learning detection, the difference of the gray value of different zones can become smaller in the gray level image after the display device imaging to be detected, so as to
Convenient for defect analysis.Due to do not needed in the embodiment of the present invention setting multiple images collecting unit can be realized it is multiple to be detected aobvious
Show device efficient optical detection simultaneously, thus reduce the cost of optical detection apparatus, reduce accounting for for optical detection apparatus
Use space.
The above description is merely a specific embodiment, but protection scope of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, all should by the change or replacement that can be readily occurred in
It is included within the scope of the present invention.Therefore, protection scope of the present invention should using the scope of the claims as
It is accurate.
Claims (10)
1. a kind of optical detection apparatus, which is characterized in that including:
Base station;
Multiple clamping units, multiple clamping units are arranged on the base station, and each clamping unit can clamp
One display device to be detected, and the claming angle of each clamping unit is adjusted;
Image acquisition units, described image collecting unit are arranged on the top of the clamping unit, described to be detected for acquiring
The gray level image of display device;
Control unit, described control unit are all connected with described image collecting unit, multiple clamping units, and the control is single
Member is used for the claming angle of each clamping unit of gray level image control acquired according to described image collecting unit.
2. optical detection apparatus according to claim 1, which is characterized in that the clamping unit includes described for clamping
The fixture of display device to be detected, be used to support the display device to be detected central area first support bar, Yi Jiyong
In the multiple second support bars for the fringe region for supporting the display device to be detected;The first support bar and second described
Strut is vertical with the upper surface of the base station;
The upper end of the first support bar and the second support bar is both provided with the connector of flexible connection, second support
The connector on bar is connect with the fixture;
The lower end of the second support bar is connect with the upper surface of the base station by retractable structure, and the retractable structure can
It stretches along the length direction of the second support bar, the height of the second support bar is raised and lowered;
Described control unit is used for each retractable structure of gray level image control acquired according to described image collecting unit
Flexible height, to control the claming angle of each fixture.
3. optical detection apparatus according to claim 2, which is characterized in that the fixture be rectangular configuration, the clamping
Unit includes two second support bars, and two second support bars are respectively used to support in the adjacent both sides of the fixture
Point position.
4. the optical detection apparatus according to Claims 2 or 3, which is characterized in that described control unit is specifically used for:
The adjusting angle of the fixture is obtained according to the first formula;First formula is:X=(a-b) * δ-α+Δ W;Wherein, X
To adjust angle, a and b are respectively the gray value of the midpoint of two sides opposite in the gray level image, and δ is default conversion
Coefficient, α are the angle that the fixture is currently located plane and horizontal plane, and Δ W is predesigned compensation amount;
The flexible height of the corresponding retractable structure is controlled according to the adjusting angle of the fixture.
5. the optical detection apparatus according to Claims 2 or 3, which is characterized in that described in multiple clamping units
The distance of the central point of fixture to described image collecting unit is equal.
6. optical detection apparatus according to claim 2, which is characterized in that the retractable structure is lifting motor.
7. optical detection apparatus according to claim 2, which is characterized in that the connector is universal ball end connector.
8. the optical detection apparatus according to Claims 2 or 3, which is characterized in that be additionally provided on the fixture for
The display device to be detected provides the backlight of point lamp source.
9. a kind of control method of optical detection apparatus for described in any one in claim 1 to 8, which is characterized in that
The control method includes:
Obtain the gray level image of multiple display devices to be detected in multiple clamping units;
The claming angle of each clamping unit is controlled according to the gray level image.
10. control method according to claim 9, which is characterized in that when the clamping unit includes the scalable knot
It is described the claming angle of each clamping unit to be controlled to include according to the gray level image during structure:
The flexible height of each retractable structure is controlled according to the gray level image, to control the clamping of each fixture
Angle.
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Cited By (3)
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CN110567962A (en) * | 2019-10-18 | 2019-12-13 | 南京农业大学 | Pig carcass epidermis image acquisition device |
CN111638041A (en) * | 2020-05-28 | 2020-09-08 | 云谷(固安)科技有限公司 | Position adjusting device, curved surface display screen testing equipment and testing method |
CN114113098A (en) * | 2020-08-27 | 2022-03-01 | 泰科电子(上海)有限公司 | Visual detection device for connector |
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