CN101556380A - Optical source correcting method - Google Patents
Optical source correcting method Download PDFInfo
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- CN101556380A CN101556380A CNA2008100895482A CN200810089548A CN101556380A CN 101556380 A CN101556380 A CN 101556380A CN A2008100895482 A CNA2008100895482 A CN A2008100895482A CN 200810089548 A CN200810089548 A CN 200810089548A CN 101556380 A CN101556380 A CN 101556380A
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- light source
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- optical source
- mirror group
- correcting method
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Abstract
The invention relates to an optical source correcting method which has the following steps: an equipment preparing step, an adjusting step, a setting step, a check step and a comparing step; and a check lens set, a check part, a correcting part, an analysis processing part, an optical source and an optical source correcting assembly are prepared by the steps. The check lens set is moved to the check part, and the optical source is adjusted to the minimum permissive optical source, i.e. the check lens set is moved to the correcting part, and the gray-scale value of lowest brightness standard is obtained; the optical source is adjusted to the original brightness and moved back to the check part to be checked; when the check is longer than the preset time, the check lens set is moved to the correcting part, and the brightness gray-scale value in use is analyzed; the brightness gray-scale value in use and the gray-scale value of lowest brightness standard are compared to guarantee the brightness of the optical source is maintained in a certain range to enable the invention to have the advantages of high accuracy, low cost, and the like.
Description
Technical field
The present invention relates to a kind of optical source correcting method, relate in particular to and a kind ofly relatively learn the whether normal optical source correcting method of light source with the intensity gray scale value.
Background technology
At Thin Film Transistor-LCD (Thin-Film Transistor Liquid-CrystalDisplay, abbreviation TFT LCD) in the checkout equipment, be to do a detection by the microscope group image, but because of light source uses long afterwards, the light source decay makes image brilliance variant, causes detecting unusually, so after using a period of time, need do a Light source correction, to keep the light-source brightness unanimity.
As shown in Figure 1, existing checkout equipment 90 is to have a light-source box 91, utilize light emitted device 911, a spectroscope 912 and a light source transport unit 914 of this light-source box 91 that a light source 925 that detects mirror group 921 is provided, and utilize a single-point inductor 913 (sensor) to do the feedback loop monitoring, when this single-point inductor 913 monitors the brightness decay of this light source 925, promptly provide the requisite measure that for example increases electric current or more change the bulb, make image brilliance keep unanimity by this checkout equipment 90.
But, the measured brightness value of each point is not identical in the sectional area of this light source 925, as shown in Figure 2, one first measurement point P1 and the one second measurement point P2 of this single-point inductor 913 in the sectional area of this light source 925, measured brightness value all has certain difference, therefore, can't obtain one more accurately under the situation of brightness value, existing checkout equipment 90 is lower naturally for the accuracy that light source 925 detects; In addition, when the camera lens work one that uses different multiplying is inspected, also can make the error to some extent of inspecting of light-source brightness, the accuracy that can't acquire a certain degree, and then cause bad or panel defective, have a strong impact on the LCD TV panel or the relevent information product of product yield, particularly high unit price, cause serious economy loss especially.
Therefore, be necessary to research and develop new product, to solve above-mentioned shortcoming and problem.
Summary of the invention
Technical problem underlying to be solved by this invention is, overcomes the above-mentioned defective that prior art exists, and a kind of optical source correcting method is provided, and it has advantage of high accuracy, and cost is low.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of optical source correcting method is characterized in that, comprises the following steps:
One. preparation machine step: prepare a pick-up unit and a Light source correction assembly; This pick-up unit comprises:
One detects the mirror group, can make axial stretching; This detection mirror group has a camera lens and a taking unit;
One test section is in order to put an object to be measured;
One correction unit, in order to putting this Light source correction assembly, and this test section and this correction unit is shared should detect mirror group;
One analyzing and processing portion is in order to this taking unit institute picked image of analyzing and processing;
One light source;
Two. set-up procedure: should detect the mirror group and move to this test section, and make this light source irradiation on this object to be measured, the brightness that reduces this light source more gradually is to minimum permission light source;
Three. set step: should detect the mirror group and move to this correction unit, permit the predetermined pattern image that this Light source correction assembly of light source irradiation is produced with this taking unit acquisition by this minimum, and partly analyse processing and obtain a brightness minimum standard GTG value via this analyzing and processing;
Four. detect step: this light source is recalled to original brightness, and this detections mirror group retracts this test section and detects, when detection above a schedule time, should detect the mirror group again and move to this correction unit; Partly analyse processing and obtain intensity gray scale value in the use by means of this analyzing and processing;
Five. comparison step: the intensity gray scale value is greater than this brightness minimum standard GTG value in this uses, and then expression can continue normal detection; And the intensity gray scale value is lower than this brightness minimum standard GTG value in this use, then need strengthen the brightness of this light source, makes it more than or equal to this brightness minimum standard GTG value.
Aforesaid optical source correcting method, wherein analyzing and processing portion has a detection module and a Light source correction module.
Aforesaid optical source correcting method, wherein light source be selected from positive light source or backlight one of them.
Aforesaid optical source correcting method, wherein the Light source correction assembly has several reticle field, and this each reticle field has a transmittance section and a non-transmittance section, utilizes this light source and this reticle field to form several this predetermined pattern images.
Aforesaid optical source correcting method, wherein light source can be divided into a positive light source and a backlight.
The invention has the beneficial effects as follows that it has advantage of high accuracy, and cost is low.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the synoptic diagram of existing checkout equipment
Fig. 2 is the detection synoptic diagram of the single-point inductor of existing checkout equipment
Fig. 3 is the synoptic diagram of optical source correcting method of the present invention
Fig. 4 is the equipment synoptic diagram of optical source correcting method of the present invention
Fig. 5 is the schematic perspective view of optical source correcting method of the present invention
Fig. 6 is the light-source brightness of optical source correcting method of the present invention and the synoptic diagram of time relationship
Fig. 7 is the first embodiment synoptic diagram of the Light source correction assembly of optical source correcting method of the present invention
Fig. 8 is the second embodiment synoptic diagram of the Light source correction assembly of optical source correcting method of the present invention
The number in the figure explanation:
11 preparation machine step 12 set-up procedures
13 set step 14 detects step
15 comparison step, 20 pick-up units
21 detect mirror group 211 camera lenses
212 taking units, 22 test sections
23 correction units, 24 analyzing and processing portions
25 light sources, 251 positive light sources
252 backlights, 30 objects to be measured
40 Light source correction assemblies, 41 reticle field
The non-transmittance section of 41B, 41A transmittance section
90 checkout equipments, 91 light-source box
911 light emitted devices, 912 spectroscopes
913 single-point inductors, 914 light source transport units
921 detect mirror group 925 light sources
The P1 first measurement point P2 second measurement point
Intensity gray scale value during I0 brightness minimum standard GTG value I1 uses
The I10 first brightness I11 second brightness
I12 the 3rd brightness I13 the 4th brightness
Second time of T10 very first time T20
T30 the 4th time of the 3rd time T 40
Embodiment
As shown in Figure 3, the present invention is a kind of optical source correcting method, and it comprises the following steps:
One. preparation machine step 11:, prepare a pick-up unit 20 and a Light source correction assembly 40 as Fig. 4 and shown in Figure 5; This pick-up unit 20 comprises:
One detects mirror group 21, can make axial stretching; This detection mirror group 21 has a camera lens 211 and a taking unit 212;
One test section 22 is in order to put an object 30 to be measured;
One correction unit 23, in order to putting this Light source correction assembly 40, and this test section 22 is shared these detection mirror groups 21 with this correction unit 23;
One analyzing and processing portion 24 is in order to 212 picked image of this taking unit of analyzing and processing;
One light source 25;
Two. set-up procedure 12: should detect mirror group 21 and move to this test section 22, this light source 25 is shone on this object 30 to be measured, reduce the brightness of this light source 25 more gradually, can't detect or detect the minimum permission light source that ability is lower than specification value up to this analyzing and processing portion 24;
Three. set step 13: should detect mirror group 21 and move to this correction unit 23, permit the predetermined pattern image that this Light source correction assembly 40 of light source irradiation is produced with these taking unit 212 acquisitions by this minimum, and, obtain a brightness minimum standard GTG value I0 via the analyzing and processing of this analyzing and processing portion 24;
Four. detect step 14: this light source 25 is recalled to original brightness, and this detection mirror group 21 is retracted this test section 22 and is detected, when detecting above a schedule time, should detect mirror group 21 again and move to this correction unit 23, and the analyzing and processing of this analyzing and processing portion 24 of borrowing, obtain intensity gray scale value I1 in the use;
Five. comparison step 15: when intensity gray scale value I1 was greater than this brightness minimum standard GTG value I0 in this uses, then expression can continue normal detection; And when intensity gray scale value I1 in this use is lower than this brightness minimum standard GTG value I0, then need strengthen the brightness (be meant and adjust or change the light source generation component) of this light source 25, make it more than or equal to this brightness minimum standard GTG value 10.
In more detail, intensity gray scale value I1 can decrease along with the increase of service time (as shown in Figure 6 in this use, during this uses intensity gray scale value I1 through a very first time T10, one second time T 20, one the 3rd time T 30 and one the 4th time T 40 after, its brightness is respectively one first brightness I10, one second brightness I11, one the 3rd brightness I12 and one the 4th brightness I13), and when being reduced to a certain degree (the 3rd brightness I12 for example shown in Figure 6 and the 4th brightness I13 all are lower than this brightness minimum standard GTG value I0), i.e. the result that influence detects; Therefore, the comparison of intensity gray scale value I1 in utilizing this brightness minimum standard GTG value I0 and using allows intensity gray scale value T1 can keep the state that is higher than this brightness minimum standard GTG value I0 at any time in this uses, avoids detecting unusually.
As shown in Figure 7, about Light source correction assembly 40 of the present invention, be to have several reticle field 41, and this each reticle field 41 has a transmittance section 41A and a non-transmittance section 41B, utilize this light source 25 and this reticle field 41 to form several predetermined pattern images, several predetermined pattern images are done a GTG value operational analysis, can improve the error that spot measurement causes; And these several reticle field 41 are to have multiple different specification, can comply with the multiplying power difference of inspecting area or inspecting mirror group 21, and select different specifications.
In addition, because the transmittance section 41A of this Light source correction assembly 40 and this non-transmittance section 41B are mainly used to produce the predetermined pattern image with this light source 25, and then try to achieve a GTG value accurately, therefore, the figure that this transmittance section 41A and this non-transmittance section 41B are constituted is not limited to specific figure, and it can be geometric figure arbitrarily such as square, ellipse or triangle, certainly, in design, this Light source correction assembly 40 also can be designed to have the alternate light shield of striped as shown in Figure 8.
About this analyzing and processing portion 24, be to have a detection module and a Light source correction module, this detection module is in order to detection or measures this object 30 to be measured, and this Light source correction module can be done an image analysing computer, and the intensity gray scale value of record image.
As for this light source 25 on the implementation, then can adopt positive light source 251 or backlight 252 (as shown in Figure 4), result of use all together.
In sum, advantage of the present invention and effect can be summarized as:
1, accuracy height. Existing Light source correction equipment is to utilize the single-point inductor to make the feedback circuit prison Control, its degree of accuracy is not high, and produces easily error when detecting the change of mirror group multiplying power, can't reach Due effect; And optical source correcting method of the present invention is to utilize light source to cooperate this transmittance section and non-The comparison that performs an analysis of the intensity gray scale value of the image that light section produces can obtain in the image that several are predetermined The row operation of going forward side by side of the intensity gray scale value of figure is difficult for producing error, and can be according to inspecting area or inspecting The multiplying power difference of mirror group, and the Light source correction assembly of selection different size, so, the accuracy height had Advantage.
2, cost is low. Existing Light source correction equipment utilization single-point inductor is done the feedback circuit monitoring, no But can't reach due effect, and the light source cost also improves many; And the present invention only need increase by one The Light source correction assembly, the manner of comparison of the intensity gray scale value of recycling image can reach quite good Good effect, so, the low advantage of cost had.
Claims (5)
1. an optical source correcting method is characterized in that, comprises the following steps:
One. preparation machine step: prepare a pick-up unit and a Light source correction assembly; This pick-up unit comprises:
One detects the mirror group, can make axial stretching; This detection mirror group has a camera lens and a taking unit;
One test section is in order to put an object to be measured;
One correction unit, in order to putting this Light source correction assembly, and this test section and this correction unit is shared should detect mirror group;
One analyzing and processing portion is in order to this taking unit institute picked image of analyzing and processing;
One light source;
Two. set-up procedure: should detect the mirror group and move to this test section, and make this light source irradiation on this object to be measured, the brightness that reduces this light source more gradually is to minimum permission light source;
Three. set step: should detect the mirror group and move to this correction unit, permit the predetermined pattern image that this Light source correction assembly of light source irradiation is produced with this taking unit acquisition by this minimum, and partly analyse processing and obtain a brightness minimum standard GTG value via this analyzing and processing;
Four. detect step: this light source is recalled to original brightness, and this detections mirror group retracts this test section and detects, when detection above a schedule time, should detect the mirror group again and move to this correction unit; Partly analyse processing and obtain intensity gray scale value in the use by means of this analyzing and processing;
Five. comparison step: the intensity gray scale value is greater than this brightness minimum standard GTG value in this uses, and then expression can continue normal detection; And the intensity gray scale value is lower than this brightness minimum standard GTG value in this use, then need strengthen the brightness of this light source, makes it more than or equal to this brightness minimum standard GTG value.
2. optical source correcting method according to claim 1 is characterized in that: described analyzing and processing portion has a detection module and a Light source correction module.
3. optical source correcting method according to claim 1 is characterized in that: described light source is to be selected from positive light source or backlight.
4. optical source correcting method according to claim 1 is characterized in that: described Light source correction assembly has several reticle field, and this each reticle field has a transmittance section and a non-transmittance section, utilizes this light source and this reticle field to form several this predetermined pattern images.
5. optical source correcting method according to claim 1 is characterized in that: described light source can be divided into a positive light source and a backlight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100895482A CN101556380B (en) | 2008-04-08 | 2008-04-08 | Optical source correcting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100895482A CN101556380B (en) | 2008-04-08 | 2008-04-08 | Optical source correcting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101556380A true CN101556380A (en) | 2009-10-14 |
| CN101556380B CN101556380B (en) | 2010-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008100895482A Expired - Fee Related CN101556380B (en) | 2008-04-08 | 2008-04-08 | Optical source correcting method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014172995A1 (en) * | 2013-04-25 | 2014-10-30 | 深圳市华星光电技术有限公司 | Method and system for correcting lens of liquid crystal panel appearance detection device |
| CN105911724A (en) * | 2016-05-23 | 2016-08-31 | 京东方科技集团股份有限公司 | Method and device for determining illumination intensity for detection and optical detection method and device |
| CN107597614A (en) * | 2017-09-12 | 2018-01-19 | 上海大学 | A kind of metal can online light leak test system and its demarcation and diagnostic method at a high speed |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1245008C (en) * | 2000-08-11 | 2006-03-08 | 宇东科技股份有限公司 | Compensating method of planar light source |
| CN1995986A (en) * | 2006-01-05 | 2007-07-11 | 元中光学仪器国际贸易（上海）有限公司 | Detection system for large-sized panel display device |
-
2008
- 2008-04-08 CN CN2008100895482A patent/CN101556380B/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014172995A1 (en) * | 2013-04-25 | 2014-10-30 | 深圳市华星光电技术有限公司 | Method and system for correcting lens of liquid crystal panel appearance detection device |
| CN105911724A (en) * | 2016-05-23 | 2016-08-31 | 京东方科技集团股份有限公司 | Method and device for determining illumination intensity for detection and optical detection method and device |
| WO2017202114A1 (en) * | 2016-05-23 | 2017-11-30 | 京东方科技集团股份有限公司 | Method and apparatus for determining illumination intensity for inspection, and optical inspection method and apparatus |
| CN105911724B (en) * | 2016-05-23 | 2018-05-25 | 京东方科技集团股份有限公司 | Determine the method and apparatus of the intensity of illumination for detection and optical detecting method and device |
| US10510141B2 (en) | 2016-05-23 | 2019-12-17 | Boe Technology Group Co., Ltd. | Method and apparatus for determining illumination intensity for inspection, and method and apparatus for optical inspection |
| CN107597614A (en) * | 2017-09-12 | 2018-01-19 | 上海大学 | A kind of metal can online light leak test system and its demarcation and diagnostic method at a high speed |
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| CN101556380B (en) | 2010-12-01 |
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Granted publication date: 20101201 Termination date: 20120408 |