CN101852593A - Automatic optical inspection equipment, light measuring tool plate and light adjusting method thereof - Google Patents
Automatic optical inspection equipment, light measuring tool plate and light adjusting method thereof Download PDFInfo
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- CN101852593A CN101852593A CN 201010172904 CN201010172904A CN101852593A CN 101852593 A CN101852593 A CN 101852593A CN 201010172904 CN201010172904 CN 201010172904 CN 201010172904 A CN201010172904 A CN 201010172904A CN 101852593 A CN101852593 A CN 101852593A
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Abstract
The invention discloses automatic optical inspection equipment, a light measuring tool plate and a light adjusting method thereof. The equipment comprises a detection platform, the light measuring tool plate, a light source, a scanner and an adjusting device, wherein the light measuring tool plate is arranged on the detection platform, and the surface of the light measuring tool plate is provided with a reference object which protrudes or depresses in a circular arc shape from the surface; the light source and the scanner are positioned above the detection platform; light rays emitted from the light source are projected to the reference object; the scanner is used for scanning the reference object by using the light rays reflected by the reference object and acquiring a scanning image; and the adjusting device is used for analyzing the scanning image, judging whether the intensities and angles of the light rays projected to the reference object from the light source and/or the uniformity of reflected light meet the preset intensity, angle and uniformity or not according to the scanning image, and if the intensities and angles of the light rays do not meet the preset intensity, angle and uniformity, adjusting the intensities and/or angles of the light rays emitted from the light source until the intensities and/or angles meet requirements. A light detection situation can be adjusted according to the practical requirement of a detected product and the detection effect of the equipment is adjusted so as to improve the production efficiency and capacity of the equipment.
Description
Technical field
The present invention relates to a kind ofly, relate in particular to a kind of automatic optical checking equipment and light measuring tool plate thereof and light-dimming method.
Background technology
Automatic visual inspection (AOI) equipment generally carries optical recognition system, and machine can be adjusted optical parametric according to measuring the reflective situation of thing automatically automatically, carries out optical correction.Common optical correction such as plane picture detect, promptly the plane picture that configures is carried out image capture, regulate the CCD focal length according to pattern definition, and be that gray-scale value changes the energy that the incident light intensity is the light that sends of lamp source according to the intensity of the reflection of light on plane, make plane picture clearly show, and the good parameter of being regulated of record.
Another kind of optical detective technology can be consulted No. 200710170086.2 disclosed method for automated optical inspection of disclosed Chinese invention patent application on September 3rd, 2008, can reduce the excessive detection of detected object thing such as flexible printed-circuit board, described method comprises step: when inspection is formed at pattern on the above-mentioned printed circuit board, utilization is at first reflected image that obtains of irradiates light along inclined direction first, distinguish pattern composition and space composition earlier, carry out the pattern form inspection earlier, second reflected image that utilizes secondarily irradiates light vertically to obtain then, with reference to the zone of the pattern composition that obtains by above-mentioned first reflected image, be that the center is checked with the surface depression.
But, it is to proofread and correct according to program designer's thinking that prior art AOI automated optical is proofreaied and correct, correcting mode is very inflexible, and can not adjust according to the actual needs at scene, for light intensity Direct Recognition with the naked eye, and the reflective situation for male and fomale(M﹠F) can't judge whether to meet user's request, and the people is to the intervention neither one reference standard of equipment.
Summary of the invention
The technical matters that the present invention mainly solves provides a kind of automatic optical checking equipment and light measuring tool plate and light-dimming method, can adjust the light situation that detects according to the actual needs of testing product, the detection effect of conditioning equipment improves efficiency of equipment and production capacity.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of automatic optical checking equipment is provided, comprises: detection platform; Be positioned over the light measuring tool plate on the described detection platform, described light measuring tool plate surface is provided with from surperficial circular arc protuberance or recessed object of reference; Be positioned at light source, the scanner of described detection platform top, the ray cast that described light source sends is to described object of reference, and described scanner is used to utilize described object of reference that the reflection of described light is scanned described object of reference, and obtains scan image; Regulating device, be used to analyze described scan image, according to described scan image judge described light source projects to the light of object of reference whether satisfy default intensity, angle and/or catoptrical uniformity coefficient, when not satisfying, regulate the intensity of described source light and/or angle until meeting the demands.
Wherein, the object of reference of circular arc protuberance is semicircle convex ball or spider on the described light measuring tool plate, and described spider is made up of two right cylinders.
Wherein, the recessed object of reference of circular arc is a circular pit on the described light measuring tool plate.
Wherein, described object of reference is the metal object of surface finish.
Wherein, described object of reference comprises multiple, and the quantity of every kind of object of reference is a plurality of, and not of uniform size.
For solving the problems of the technologies described above, another technical solution used in the present invention is: a kind of automatic optical checking equipment light measuring tool plate is provided, and described light measuring tool plate surface is provided with from surperficial circular arc protuberance or recessed object of reference.
Wherein, the object of reference of circular arc protuberance is semicircle convex ball or spider on the described light measuring tool plate, and described spider is made up of two right cylinders, and the recessed object of reference of circular arc is a circular pit on the described light measuring tool plate.
Wherein, described object of reference is the metal object of surface finish.
Wherein, described object of reference comprises multiple, and the quantity of every kind of object of reference is a plurality of, and not of uniform size.
For solving the problems of the technologies described above, another technical scheme that the present invention adopts is: the light-dimming method that a kind of automatic optical checking equipment is provided, comprise: light measuring tool plate is positioned on the detection platform, and described light measuring tool plate surface is provided with from surperficial circular arc protuberance or recessed object of reference; , utilize described object of reference that the reflection of described light is scanned described object of reference, and obtain scan image to described object of reference throw light with certain intensity and angle; Analyze described scan image, according to described scan image judge described light source projects to the light of object of reference whether satisfy default intensity, angle and/or catoptrical uniformity coefficient, when not satisfying, regulate the intensity of described source light and/or angle until meeting the demands.
The invention has the beneficial effects as follows: being different from the prior art automatic optical checking equipment can not adjust according to the actual needs at scene, also can't judge whether to meet the situation of user's request to the reflective situation of male and fomale(M﹠F), the present invention designs unique light measuring tool plate, utilize scan function that equipment self has that the object of reference of described light measuring tool plate is scanned, judge need only unreasonable that detected with object of reference as reflective spot, when unreasonable, change light intensity and/or incident angle according to reflective situation, by scanning contrast repeatedly, conditioning equipment inner parameter to required reflecting effect gets final product, can adjust the light situation that detects according to the actual needs of testing product, the detection effect of conditioning equipment improves efficiency of equipment and production capacity.
Description of drawings
Fig. 1 is the structural representation of automatic optical checking equipment embodiment of the present invention;
Fig. 2 is the schematic perspective view of object of reference in the light measuring tool plate of the present invention;
Fig. 3 is the structural representation of light measuring tool plate embodiment of the present invention;
Fig. 4 is the process flow diagram of the light-dimming method embodiment of automatic optical checking equipment of the present invention.
Embodiment
By describing technology contents of the present invention, structural attitude in detail, realized purpose and effect, give explanation below in conjunction with embodiment and conjunction with figs. are detailed.
See also Fig. 1, Fig. 2 and Fig. 3, automatic optical checking equipment embodiment of the present invention comprises:
Detection platform (figure does not show);
Be positioned over the light measuring tool plate 20 on the described detection platform, described light measuring tool plate 20 surfaces are provided with from surperficial circular arc protuberance or recessed object of reference 21;
Be positioned at light source 30, the scanner (figure does not show) of described detection platform top, the ray cast that described light source 30 sends is to described object of reference 21, described scanner is used to utilize the reflection of 21 pairs of described light of described object of reference that described object of reference 21 is scanned, and obtains scan image;
Regulating device (figure does not show), be used to analyze described scan image, according to described scan image judge described light source 30 be projected to object of reference 21 light whether satisfy default intensity, angle and/or catoptrical uniformity coefficient, when not satisfying, regulate the intensity of described light source 30 light and/or angle until meeting the demands, promptly when not satisfying, regulate the intensity and/or the angle of described light source 30 light, and then scanning, analyze, until meeting the demands.
Wherein judge described light source 30 be projected to object of reference 21 light whether satisfy default intensity, angle and/or catoptrical uniformity coefficient, comprise and judge described light source 30 is projected to whether the satisfying default intensity, judge described light source 30 is projected to whether the satisfying default angle, judge that described light source 30 is projected to the whether satisfied catoptrical uniformity coefficient of presetting of light of object of reference 21 or above any both combinations of light of object of reference 21 of light of object of reference 21.
The present invention designs unique light measuring tool plate 20, utilize scan function that equipment self has that the object of reference 21 of described light measuring tool plate 20 is scanned, judge need only unreasonable that detected with object of reference 21 as reflective spot, when unreasonable, change light intensity and/or incident angle according to reflective situation, by scanning contrast repeatedly, conditioning equipment inner parameter to required reflecting effect gets final product, can adjust the light situation that detects according to the actual needs of testing product, the detection effect of conditioning equipment improves efficiency of equipment and production capacity.
Wherein, being different from the detection of prior art stain or white point mainly is to carry out the technology that the object plane reflected light detects, the design of surperficial circular arc protuberance that the present invention proposes or recessed object of reference 21, because of its circular arc three-dimensional surface can carry out FR reflection to light, approach in the actual product element to the reflecting effect of light, through a large amount of experiments, prove that detection object of reference 21 that surperficial circular arc protuberance or recessed object of reference 21 are suitable as product most adjusts the optical environment and the parameter of automatic optical checking equipment.
In one embodiment, the object of reference 21 of circular arc protuberance is semicircle convex ball or spider on the described light measuring tool plate 20, and described spider is made up of two right cylinders.Certainly can also be other shapes, can carry out FR reflection to light as long as design spirit satisfies its circular arc three-dimensional surface.
In one embodiment, the recessed object of reference 21 of circular arc is circular pit on the described light measuring tool plate 20.
In one embodiment, described object of reference 21 is metal objects of surface finish, and the body surface reflecting effect after the polishing is best, also is suitable as light modulation object of reference 21.Certainly, also can be zinc-plated metal object.
In one embodiment, described object of reference 21 comprises multiple, and the quantity of every kind of object of reference 21 is a plurality of, and not of uniform size.
Among Fig. 3 from top to bottom, be distributed as spider, semicircle convex ball, circular pit at above-mentioned object of reference 21 and judge that as reflective spot needed only denys among the rational embodiment, every kind of object of reference 21 as reflective spot all has the plurality of specifications size, can judge the reflective situation under the different resolutions, all reflective spots all are based upon on the sheet metal, and the thickness of entire tool is the distance of scanner foot and detection platform only.
If desired light modulation the time, open the corresponding software of AOI, light measuring tool plate 20 is fixed on the Y-axis table top of detection platform, take pictures with scanner scans, check the reflective situation that picture that software processes is come out or gray-scale value are judged again, change light intensity or incident angle according to reflective situation, by scanning contrast repeatedly, regulating system inner parameter to required reflecting effect gets final product.The present invention can realize by hardware, also can adopt artificial replacement regulating device, reflective situation by light measuring tool plate 20 can the light reflex situation have impression intuitively, be convenient to judge reflective light intensity, adjust the light situation that detects according to the actual needs of testing product, the detection effect of conditioning equipment improves efficiency of equipment and production capacity.
The present invention also provides a kind of automatic optical checking equipment light measuring tool plate 20 embodiment, and described light measuring tool plate 20 surfaces are provided with from surperficial circular arc protuberance or recessed object of reference 21.
Wherein, the object of reference 21 of circular arc protuberance is semicircle convex ball or spider on the described light measuring tool plate 20, and described spider is made up of two right cylinders, and the recessed object of reference 21 of circular arc is circular pit on the described light measuring tool plate 20.
Wherein, described object of reference 21 metal object that is surface finish.Described object of reference 21 comprises multiple, and the quantity of every kind of object of reference 21 is a plurality of, and not of uniform size.
Consult Fig. 4, the present invention also provides a kind of light-dimming method embodiment of automatic optical checking equipment, comprises step:
Step 401: light measuring tool plate 20 is positioned over (the setting tool plate is in table top) on the detection platform, and described light measuring tool plate 20 surfaces are provided with from surperficial circular arc protuberance or recessed object of reference 21;
Step 402: to described object of reference 21 throw lights, utilize the reflection of 21 pairs of described light of described object of reference that described object of reference 21 is scanned (opening photograph software carries out), and obtain scan image with certain intensity and angle;
Step 403: analyze described scan image (take pictures and observe the cambered surface reflecting effect), according to described scan image judge described light source 30 be projected to object of reference 21 light whether satisfy default intensity, angle and/or catoptrical uniformity coefficient, when not satisfying, regulate the intensity and/or the angle of described light source 30 light and (revise light intensity parameter lighting angle and logic until meeting the demands, can multiple scanning take pictures, repeat to revise parameter) to desirable effect.
The above only is embodiments of the invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes instructions of the present invention and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (10)
1. an automatic optical checking equipment is characterized in that, comprising:
Detection platform;
Be positioned over the light measuring tool plate on the described detection platform, described light measuring tool plate surface is provided with from surperficial circular arc protuberance or recessed object of reference;
Be positioned at light source, the scanner of described detection platform top, the ray cast that described light source sends is to described object of reference, and described scanner is used to utilize described object of reference that the reflection of described light is scanned described object of reference, and obtains scan image;
Regulating device, be used to analyze described scan image, according to described scan image judge described light source projects to the light of object of reference whether satisfy default intensity, angle and/or catoptrical uniformity coefficient, when not satisfying, regulate the intensity of described source light and/or angle until meeting the demands.
2. automatic optical checking equipment according to claim 1 is characterized in that: the object of reference of circular arc protuberance is semicircle convex ball or spider on the described light measuring tool plate, and described spider is made up of two right cylinders.
3. automatic optical checking equipment according to claim 1 is characterized in that: the recessed object of reference of circular arc is a circular pit on the described light measuring tool plate.
4. according to claim 2 or 3 described automatic optical checking equipments, it is characterized in that: described object of reference is the metal object of surface finish.
5. according to claim 2 or 3 described automatic optical checking equipments, it is characterized in that: described object of reference comprises multiple, and the quantity of every kind of object of reference is a plurality of, and not of uniform size.
6. an automatic optical checking equipment light measuring tool plate is characterized in that, described light measuring tool plate surface is provided with from surperficial circular arc protuberance or recessed object of reference.
7. automatic optical checking equipment light measuring tool plate according to claim 6, it is characterized in that: the object of reference of circular arc protuberance is semicircle convex ball or spider on the described light measuring tool plate, described spider is made up of two right cylinders, and the recessed object of reference of circular arc is a circular pit on the described light measuring tool plate.
8. according to claim 6 or 7 described automatic optical checking equipment light measuring tool plates, it is characterized in that: described object of reference is the metal object of surface finish.
9. according to claim 6 or 7 described automatic optical checking equipment light measuring tool plates, it is characterized in that: described object of reference comprises multiple, and the quantity of every kind of object of reference is a plurality of, and not of uniform size.
10. the light-dimming method of an automatic optical checking equipment is characterized in that, comprising:
Light measuring tool plate is positioned on the detection platform, and described light measuring tool plate surface is provided with from surperficial circular arc protuberance or recessed object of reference;
, utilize described object of reference that the reflection of described light is scanned described object of reference, and obtain scan image to described object of reference throw light with certain intensity and angle;
Analyze described scan image, according to described scan image judge described light source projects to the light of object of reference whether satisfy default intensity, angle and/or catoptrical uniformity coefficient, when not satisfying, regulate the intensity of described source light and/or angle until meeting the demands.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201010172904 CN101852593A (en) | 2010-05-06 | 2010-05-06 | Automatic optical inspection equipment, light measuring tool plate and light adjusting method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010172904 CN101852593A (en) | 2010-05-06 | 2010-05-06 | Automatic optical inspection equipment, light measuring tool plate and light adjusting method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2014139231A1 (en) * | 2013-03-14 | 2014-09-18 | 合肥京东方光电科技有限公司 | System and method for testing and regulating uniformity of light intensity of light source |
| CN107170035A (en) * | 2017-07-12 | 2017-09-15 | 朱培恒 | A kind of high reflective object scan method and its system |
| CN112161656A (en) * | 2020-09-30 | 2021-01-01 | 宋志龙 | Optical detection system and detection method for circular PCB |
| CN112345452A (en) * | 2020-11-06 | 2021-02-09 | 罗建华 | Lamplight adjusting method, storage medium and system |
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| EP2144035A1 (en) * | 2008-07-10 | 2010-01-13 | Mitutoyo Corporation | Calibrating jig, profile measuring device, and method of offset calculation |
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| JP2006301991A (en) * | 2005-04-21 | 2006-11-02 | Pulstec Industrial Co Ltd | Correction method of coordinate transformation function |
| JP2007212243A (en) * | 2006-02-08 | 2007-08-23 | Nippon Sheet Glass Co Ltd | Standard sample for microscope and its manufacturing method |
| CN101556381A (en) * | 2008-04-10 | 2009-10-14 | 东捷科技股份有限公司 | Detection device and image illumination level compensation method |
| EP2144035A1 (en) * | 2008-07-10 | 2010-01-13 | Mitutoyo Corporation | Calibrating jig, profile measuring device, and method of offset calculation |
| CN101396267A (en) * | 2008-09-22 | 2009-04-01 | 北京凌云光视数字图像技术有限公司 | Ruling film AOI special light source and detection method and AOI negative-film inspection device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2014139231A1 (en) * | 2013-03-14 | 2014-09-18 | 合肥京东方光电科技有限公司 | System and method for testing and regulating uniformity of light intensity of light source |
| CN107170035A (en) * | 2017-07-12 | 2017-09-15 | 朱培恒 | A kind of high reflective object scan method and its system |
| CN107170035B (en) * | 2017-07-12 | 2023-08-25 | 朱培恒 | High-reflection object scanning method and system |
| CN112161656A (en) * | 2020-09-30 | 2021-01-01 | 宋志龙 | Optical detection system and detection method for circular PCB |
| CN112161656B (en) * | 2020-09-30 | 2022-09-06 | 深圳市宝信欣旺科技有限公司 | Optical detection system and detection method for circular PCB |
| CN112345452A (en) * | 2020-11-06 | 2021-02-09 | 罗建华 | Lamplight adjusting method, storage medium and system |
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Application publication date: 20101006 |