CN203643361U - Highly reflective light metal surface visual inspection system based on cross-polarization - Google Patents
Highly reflective light metal surface visual inspection system based on cross-polarization Download PDFInfo
- Publication number
- CN203643361U CN203643361U CN201420024706.7U CN201420024706U CN203643361U CN 203643361 U CN203643361 U CN 203643361U CN 201420024706 U CN201420024706 U CN 201420024706U CN 203643361 U CN203643361 U CN 203643361U
- Authority
- CN
- China
- Prior art keywords
- metal surface
- imaging device
- light
- light source
- polarizer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 37
- 239000002184 metal Substances 0.000 title claims abstract description 37
- 238000005388 cross polarization Methods 0.000 title claims abstract description 13
- 238000011179 visual inspection Methods 0.000 title abstract 4
- 238000003384 imaging method Methods 0.000 claims abstract description 34
- 230000010287 polarization Effects 0.000 claims abstract description 18
- 238000001514 detection method Methods 0.000 claims description 20
- 230000001154 acute effect Effects 0.000 claims description 4
- 238000007689 inspection Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000001579 optical reflectometry Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Images
Abstract
The utility model relates to a highly reflective light metal surface visual inspection system based on cross-polarization. The highly reflective light metal surface visual inspection system comprises an imaging device and an image controller connected with the imaging device, wherein a light source generation device is arranged at one side of the imaging device; the light source generation device can be rotated to form a certain angle with the vertical direction; a polarizer is arranged at a light outlet of the light source generation device; a polarization analyzer with the polarization direction different from that of the polarizer is arranged vertically below a light inlet of the imaging device; light emitted from the light source generation device firstly goes through the polarizer, is reflected on the surface of inspected metal and then goes into the imaging device to image through the polarization analyzer; the imaged image is transmitted to the image controller by the imaging device; and the received image is treated by the image controller to obtain a high-definition highly reflective light metal surface inspection image. According to the highly reflective light metal surface visual inspection system, the polarizer is matched with the polarization analyzer to filter polarized light of metal surface, and therefore, metal specular reflected light is eliminated, and the specular reflected light is avoided to directly go into the imaging device to generate a highlight phenomenon to generate greater interference on imaging quality.
Description
Technical field
The utility model relates to high reflecting material surface detection field, is specially a kind of high reflecting metal surface vision detection system based on cross polarization.
Background technology
High reflective sheet material, as the surperficial vision-based detection of aluminium sheet, corrosion resistant plate, as the detections such as defect, cut, gap have a large amount of application in automatic field, its main feature is that surface reflectance is high, if can produce high optical phenomenon when specular light directly enters CCD camera in vision-based detection at present, cause the saturated of CCD camera chip, image quality is produced to larger interference.Therefore, be necessary to study a kind of vision detection system that can suppress metal surface high light reflectivity.
Utility model content
For the shortcoming of above-mentioned prior art, the utility model provides a kind of vision detection system based on cross polarization that can suppress metal surface high light reflectivity.
The utility model solves the problems of the technologies described above by the following technical solutions: a kind of high reflecting metal surface vision detection system based on cross polarization, comprise imaging device and connected image controller, in described imaging device one side, light source generator is set, described light source generator can rotate into certain Angle with vertical direction, light-emitting window place at described light source generator is provided with the polarizer, below imaging device light inlet is vertical, be provided with the analyzer different from described polarizer polarization direction, the light that described light source generator penetrates first reflects in detected metal surface after the described polarizer, enter described imaging device imaging by described analyzer again, imaging device sends the picture becoming out to described image controller, image controller obtains the high reflecting metal surface detected image of high definition after the picture of receiving is processed.
As preferably, described imaging device is CCD camera or CMOS camera.
As preferably, described polarizer polarization direction is vertical with described analyzer polarization direction.
As preferably, the acute angle angle >85 degree that described light source generator can be rotated into vertical direction.
Further, the angle that described light source generator can be rotated into vertical direction is 90 degree.
As preferably, described light source is natural light.
The utility model compared with prior art tool has the following advantages: adopt polarizer illumination beam to be polarized, making illuminating bundle is polarized light, the specular light that makes metal surface is also polarized light, analyzer is set before imaging device, polarized light to metal surface filters, eliminate and the inconsistent metallic mirror surface reflected light of analyzer direction, while having avoided specular light directly to enter imaging device, produce high optical phenomenon image quality is produced to larger interference; The polarizer and analyzer perpendicular quadrature are placed, and make the polarization direction of specular light of metal surface vertical with analyzer direction, eliminate to greatest extent specular light; In the time that the acute angle angle >85 of incident light and vertical direction spends, be preferably 90 while spending, can realize and suppress preferably specular light, specular light now also approaches linearly polarized light, can not produce larger interference to image quality, can obtain so the high reflecting metal surface detected image of high definition.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach object and effect is easy to understand, below in conjunction with specifically illustrating and embodiment, further set forth the utility model.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
With reference to figure 1, the utility model embodiment provides a kind of high reflecting metal surface vision detection system based on cross polarization, comprise imaging device 1 and connected image controller 4, described imaging device is CCD camera or CMOS camera, in described imaging device 1 one sides, light source generator 2 is set, described light source is natural light, described light source generator 2 can rotate into certain Angle with vertical direction, the acute angle angle [alpha] >85 degree that described light source generator 2 can be rotated into vertical direction, optimized angle is 90 degree, light-emitting window place at described light source generator 2 is provided with the polarizer 31, below imaging device 1 light inlet is vertical, be provided with the analyzer 32 different from the described polarizer 31 polarization directions, light shafts that described light source generator 2 penetrates 01 first through the described polarizer 31 at detected metal 5 surface reflections, reflection ray 02 is again by described analyzer 32, polarized light 03 enters described imaging device 1 imaging again, imaging device 1 sends the picture becoming out to described image controller 4, image controller 4 obtains the high reflecting metal surface detected image of high definition after the picture of receiving is processed.
As preferably, described polarizer polarization direction is vertical with described analyzer polarization direction.
In the utility model, first need to do defect, cut, the aluminium sheet of the surperficial vision-based detection such as gap, the contour reflective sheet material of corrosion resistant plate is placed under this detection system, open the light source generator that CCD camera or CMOS camera one side are set, light source generator penetrates a branch of natural light, first pass through the polarizer, form linearly polarized light, be irradiated to again metal surface, the specular light of metal surface is at the elliptically polarized light for approaching linearly polarized light, when reflection ray passes through analyzer vertical with polarizer polarization direction below CCD camera or CMOS camera, the polarization direction of specular light is vertical with the polarization direction of analyzer, can not enter CCD camera or CMOS camera inside, realize the inhibition to specular light, diffusing because reflectometry is larger to randomness of metal surface simultaneously, its polarization direction has certain randomness, so diffuse in the time entering analyzer, the direction of total some polarisation of light direction and analyzer is identical, thereby enter CCD camera or CMOS camera carries out imaging, realize the detection to metal surface.This detection system adopts polarizer illumination beam to be polarized, making illuminating bundle is polarized light, the specular light that makes metal surface is also polarized light, analyzer is set before imaging device, polarized light to metal surface filters, eliminate and the inconsistent metallic mirror surface reflected light of analyzer direction, while having avoided specular light directly to enter imaging device, produce high optical phenomenon image quality is produced to larger interference, can obtain so the high reflecting metal surface detected image of high definition.
More than show and described ultimate principle of the present utility model and principal character and advantage of the present utility model, the technician of the industry should understand, the utility model is not restricted to the described embodiments, that in above-described embodiment and instructions, describes just illustrates principle of the present utility model, do not departing under the prerequisite of the utility model spirit and scope, the utility model also has various changes and modifications, these changes and improvements all fall within the scope of claimed the utility model, the claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (6)
1. the high reflecting metal surface vision detection system based on cross polarization, it is characterized in that: comprise imaging device and connected image controller, in described imaging device one side, light source generator is set, described light source generator can rotate into certain Angle with vertical direction, light-emitting window place at described light source generator is provided with the polarizer, below imaging device light inlet is vertical, be provided with the analyzer different from described polarizer polarization direction, the light that described light source generator penetrates first reflects in detected metal surface after the described polarizer, enter described imaging device imaging by described analyzer again, imaging device sends the picture becoming out to described image controller, image controller obtains the high reflecting metal surface detected image of high definition after the picture of receiving is processed.
2. a kind of high reflecting metal surface vision detection system based on cross polarization according to claim 1, is characterized in that: described imaging device is CCD camera or CMOS camera.
3. a kind of high reflecting metal surface vision detection system based on cross polarization according to claim 1, is characterized in that: described polarizer polarization direction is vertical with described analyzer polarization direction.
4. a kind of high reflecting metal surface vision detection system based on cross polarization according to claim 1, is characterized in that: the acute angle angle >85 degree that described light source generator can be rotated into vertical direction.
5. a kind of high reflecting metal surface vision detection system based on cross polarization according to claim 4, is characterized in that: the angle that described light source generator can be rotated into vertical direction is 90 degree.
6. a kind of high reflecting metal surface vision detection system based on cross polarization according to claim 1, is characterized in that: described light source is natural light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420024706.7U CN203643361U (en) | 2014-01-15 | 2014-01-15 | Highly reflective light metal surface visual inspection system based on cross-polarization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420024706.7U CN203643361U (en) | 2014-01-15 | 2014-01-15 | Highly reflective light metal surface visual inspection system based on cross-polarization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203643361U true CN203643361U (en) | 2014-06-11 |
Family
ID=50874596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420024706.7U Expired - Lifetime CN203643361U (en) | 2014-01-15 | 2014-01-15 | Highly reflective light metal surface visual inspection system based on cross-polarization |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203643361U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103743758A (en) * | 2014-01-15 | 2014-04-23 | 唐山英莱科技有限公司 | Visual inspection system for high-reflective metal surface based on cross-polarization |
| CN110208287A (en) * | 2019-07-03 | 2019-09-06 | 东莞创视自动化科技有限公司 | OLED screen polarized light type coaxial configuration light detection method and OLED screen polarisation detection device |
| CN114485415A (en) * | 2021-12-27 | 2022-05-13 | 中国水产科学研究院黄海水产研究所 | Benthic fish growth phenotype efficient measurement method and device |
-
2014
- 2014-01-15 CN CN201420024706.7U patent/CN203643361U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103743758A (en) * | 2014-01-15 | 2014-04-23 | 唐山英莱科技有限公司 | Visual inspection system for high-reflective metal surface based on cross-polarization |
| CN110208287A (en) * | 2019-07-03 | 2019-09-06 | 东莞创视自动化科技有限公司 | OLED screen polarized light type coaxial configuration light detection method and OLED screen polarisation detection device |
| CN114485415A (en) * | 2021-12-27 | 2022-05-13 | 中国水产科学研究院黄海水产研究所 | Benthic fish growth phenotype efficient measurement method and device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103743758A (en) | Visual inspection system for high-reflective metal surface based on cross-polarization | |
| EP2554977B1 (en) | Surface detection method for steel plate having resin coating film and surface detection device for same | |
| CN110441309A (en) | Micro- scattering polarization imaging surface defectoscopy device and measurement method | |
| JP5274622B2 (en) | Defect inspection apparatus and method | |
| CN105572144B (en) | Glass corner image collecting device and system | |
| CN203643361U (en) | Highly reflective light metal surface visual inspection system based on cross-polarization | |
| JPS58219441A (en) | Apparatus for detecting defect on surface of convex object | |
| CN202259209U (en) | Detecting device for crystalline silicon cell slice | |
| JP2015040835A (en) | Defect inspection device and defect inspection method for transparent tabular body | |
| CN103674903A (en) | Non-contact vancometer | |
| KR20130103454A (en) | Apparatus for inspecting cylinder | |
| JP2010117337A (en) | Surface defect inspection device | |
| TWI622764B (en) | An automatic optical inspecting system for particle inspection from the surface | |
| CN206618705U (en) | A kind of optical film defect detecting device | |
| JP2007003376A (en) | Irregularity inspection device of cyclic pattern and cyclic pattern imaging method | |
| TWI711816B (en) | System and method for inspecting object | |
| TW201530121A (en) | Panel defective pixel detection method and system | |
| CN203643359U (en) | Highly reflective light surface coaxial light path detection system based on dioptric imaging | |
| JP2010223598A (en) | Flaw inspection device for sheet-like article | |
| KR101745764B1 (en) | Apparatus and Method for Optically Inspecting Surface of Plate Member | |
| CN203037566U (en) | Machine vision detection light source and system | |
| JP2017150992A (en) | Inspection device and inspection method | |
| KR20160032576A (en) | System and Method for Analyzing Image Using High-Speed Camera and Infrared Optical System | |
| CN109282759B (en) | Automobile piston surface roughness detection method | |
| CN103760167A (en) | High-light-reflection-surface coaxial optical path detection system based on refraction imaging |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140611 |