CN102495070A - System for detecting three-dimensional defects on surface of large-breadth adhesive label - Google Patents

System for detecting three-dimensional defects on surface of large-breadth adhesive label Download PDF

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Publication number
CN102495070A
CN102495070A CN2011104063612A CN201110406361A CN102495070A CN 102495070 A CN102495070 A CN 102495070A CN 2011104063612 A CN2011104063612 A CN 2011104063612A CN 201110406361 A CN201110406361 A CN 201110406361A CN 102495070 A CN102495070 A CN 102495070A
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China
Prior art keywords
light
quasi
detection system
parallel light
parallel
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CN2011104063612A
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Chinese (zh)
Inventor
齐继芳
杨艺
姚毅
赵严
张勇
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Beijing Lingyun Guangshi Digital Image Technology Co Ltd
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Beijing Lingyun Guangshi Digital Image Technology Co Ltd
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Priority to CN2011104063612A priority Critical patent/CN102495070A/en
Publication of CN102495070A publication Critical patent/CN102495070A/en
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Abstract

The invention provides a system for detecting three-dimensional defects on the surface of a large-breadth adhesive label. The system comprises a lighting light source for irradiating a detected object, a light ray collimation lens group which is positioned in an advancing direction of a light beam emitted by the lighting light source, and is used for assembling a plurality of small-area quasi-parallel light sources emitted by the lighting light source to obtain a quasi-parallel light ray with a wide lighting field, a focusing lens for focusing the assembled quasi-parallel light ray to obtain a wide quasi-parallel light lighting field, and a shooting part for shooting light reflected by the detected object. The system can image scratches and bubbles which have small sizes on the surface of the large-breadth adhesive label, and effectively detect the three-dimensional defects, such as the scratches, the bubbles, excessive glue and the like, so that the detection efficiency is improved.

Description

Big fabric width adhesive label 3 D defects on surface detection system
Technical field
The invention belongs to big fabric width adhesive label 3 D defects on surface detection system.
Background technology
Adhesive label also is self-adhesive label, is to be lining with paper, film or special material, and the back side scribbles bonding agent, being coated with a kind of compound substance that the silicon base stock is a protection sheet, and after processing such as printing, cross cutting, becomes the finished product label.During application, only need to peel off, one press gently, can be attached to the surface of various base materials (like packings such as electronic product, food, medicines) from base stock.The label quality standard that market demands are higher.3 D defects such as scuffing, bubble, the glue that overflows are the ubiquitous defectives in adhesive sticker covering material surface; Present automatic detection system is that utilization ccd imaging technique carries out to label surface that realtime graphic detects, the high-tech new technology of defect processing, and it has improved the efficient that label detects greatly, has reduced because the omission that manual detection fatigue causes.But existing led light source and fluorescent light because the light source angle of divergence is big, have only large scale and serious scuffing could be on image to some extent performance cause the above-mentioned detection technique also can't be to the gentle picture that soaks of the less scuffing of size, and detect.Therefore, also need carry out manual review afterwards to the label process checkout equipment detection that such defective is more, thereby waste lot of manpower and material resources, and the effect of manual review is not good yet.
Summary of the invention
The purpose of this invention is to provide a kind of big fabric width adhesive label 3 D defects on surface detection system; The gentle picture that soaks of scuffing that can be less to big fabric width adhesive label surface size; Can effectively detect 3 D defects such as scuffing, bubble, the glue that overflows, improve the efficient that detects.
For this reason, a kind of big fabric width adhesive label 3 D defects on surface detection system comprises:
Lighting source is used for the testee irradiates light;
The light collimation lens set is positioned on the direction that light beam that lighting source sends advances, and is used for the quasi-parallel light source of several small sizes that sent by lighting source is carried out amalgamation, obtains the quasi-parallel light of a wide illuminated field;
Convergent lens is used for the quasi-parallel light after the amalgamation is assembled, and realizes the quasi-parallel illumination light field of wide cut;
Image pickup part is to making a video recording from the light of testee reflection.
Described lighting source is to be several lighting sources that spacing distance is arranged side by side.Described lighting source is the LED lamp.Described light collimation lens set synthesizes lens combination by several simple lenses through the splicing bonding mode.Described quasi-parallel light is that dispersion angle is 15 ° a quasi-parallel light beam.Described amalgamation is for splice the light of the quasi-parallel light source of each small size in one direction.Described detection system also comprises the shading catch.The quasi-parallel illumination light field and the testee width of described wide cut adapt.The air line distance of described each lighting source distance light collimation lens set is the focal length of lens.Described image pickup part is a linear array CCD camera.Said method has been realized the object of the invention.
Advantage of the present invention be can be less to big fabric width adhesive label surface size the gentle picture that soaks of scuffing, can effectively detect 3 D defects such as scuffing, bubble, the glue that overflows, improve the efficient that detects.
Description of drawings
Fig. 1 is a principle schematic of the present invention.
Fig. 2 is a structural representation of the present invention.
Embodiment
To shown in Figure 2, a kind of big fabric width adhesive label 3 D defects on surface detection system comprises like Fig. 1:
Lighting source 1 is used for the testee irradiates light.Described lighting source is to be several lighting sources that spacing distance is arranged side by side.Described lighting source is the LED lamp.Several lighting sources can be set in the housing that is strip-like opening so that the light that each LED lamp or each LED particle lamp send with direct projection on the light collimation lens set of its lower end; Also available shading catch 2 is realized above-mentioned effect.The shading catch can be set between lighting source and the light collimation lens set; Be preferably disposed between lighting source and the convergent lens; Make it surround lighting source basically; Preferably surround the peripheral space of lighting source to light collimation lens set, convergent lens, make and have only the surface from quasi-parallel optical energy irradiation in the lip-deep zone of convergent lens to testee, its reflection luminous energy is detected by image pickup part.
Light collimation lens set 3 is positioned on the direction that light beam that lighting source sends advances, and is used for the quasi-parallel light source of several small sizes that sent by lighting source is carried out amalgamation, obtains the quasi-parallel light of a wide illuminated field.Described light collimation lens set synthesizes lens combination by several simple lenses through the splicing bonding mode.Described quasi-parallel light is that dispersion angle is 15 ° a quasi-parallel light beam.Described amalgamation is for splice the light of the quasi-parallel light source of each small size in one direction.The light collimation lens set collimates to single LED lamp emergent light, obtains the quasi-parallel light that dispersion angle is little, be evenly distributed; The light collimation lens set adopts the lens be easy to process, be easy to splice as collimating element, through to the radiative collimation of LED, obtains dispersion angle and be 15 ° quasi-parallel light beam.The light that in one direction different LED lamp collimations is obtained simultaneously carries out amalgamation, obtains the quasi-parallel light of a broad illuminated field.
Convergent lens 4 is used for the quasi-parallel light after the amalgamation is assembled, and realizes the quasi-parallel illumination light field of wide cut.Assemble through convergent lens from the quasi-parallel light that the light collimation lens set penetrates, convergence center is for accepting the camera lens surface again, and this position is positioned near the focal plane of convergent lens; Promptly the distance apart from convergent lens is approximately equal to the focal length of lens; When imaging surface position during apart from the convergent lens change in location, corresponding illuminated field scope also changes thereupon, and is big or small according to the breadth of wanting detected object; The light source works distance of illumination zone is satisfied in selection, can be embodied as picture to the surface of relative broad range.Because there is mirror-image property on printed matter overlay film surface, so quasi-parallel light needs just can make emergent light get into camera lens through convergence of rays after shining printed matter surface, and then received by the ccd camera, generates the image of printed matter surface broad visual field.
Image pickup part 6 is to making a video recording from the light of testee reflection.Described image pickup part is a linear array CCD camera.Testee 5 (or claiming surface to be checked) is big fabric width adhesive label surface, and testee is the big fabric width adhesive label surface with respect to the quasi-parallel photomovement that penetrates from convergent lens.Image pickup part is set at the side top on big fabric width adhesive label surface; The setting that is relative to each other of testee and lighting source, light collimation lens set and convergent lens; Make when not having surface imperfection in the testee; Normal surface is shone through directional light, and reflected light gets into the camera lens of image pickup part, and this is in and forms bright field on the image.Yet when having surface imperfection in the testee, the angle of testee body surface relief part just can form the zone of hard contrast greater than the angle of divergence of quasi-parallel light on image, thereby is easy to the detection of trace routine to defective.Trace routine comprises a controller that can read the ccd camera image data at least; Controller is preferably in the equipment of other oneself knowledge of control under the computer control; Take measures in detection position to defective; For example computing machine is gathered the detection position that the own equipment of knowing of ccd camera image data control is marked or cut this defective according to controller on the detection position of defective, to guarantee effectively to remove the detection position of defective.Image pickup part can be installed by adjustment ground, to obtain best reflected light.
The quasi-parallel illumination light field and the testee width of described wide cut adapt.The air line distance of described each lighting source distance light collimation lens set is the focal length of lens.
Obviously, the present invention, collimates to each single led lamp emergent light to light orienting reflex characteristic according to 3 D defects, obtains the quasi-parallel light that dispersion angle is little, be evenly distributed; Simultaneously, through the light behind several LED lamp collimations is carried out amalgamation, and the quasi-parallel light after the amalgamation is assembled, realized the quasi-parallel illumination light field of wide cut.When the angle of body surface relief part the angle of divergence, just can on image, form the zone of hard contrast, thereby be easy to the detection of trace routine defective greater than light source.Lighting source, light collimation lens set and convergent lens can be installed by adjustment ground, thereby can finally adjust the angle that is injected on the testee.
In a word, the gentle picture that soaks of scuffing that the present invention can be less to big fabric width adhesive label surface size can effectively detect 3 D defects such as scuffing, bubble, the glue that overflows, improves the efficient that detects, and can promote the use of.

Claims (10)

1. one kind big fabric width adhesive label 3 D defects on surface detection system is characterized in that comprising:
Lighting source is used for the testee irradiates light;
The light collimation lens set is positioned on the direction that light beam that lighting source sends advances, and is used for the quasi-parallel light source of several small sizes that sent by lighting source is carried out amalgamation, obtains the quasi-parallel light of a wide illuminated field;
Convergent lens is used for the quasi-parallel light after the amalgamation is assembled, and realizes the quasi-parallel illumination light field of wide cut;
Image pickup part is to making a video recording from the light of testee reflection.
2. detection system according to claim 1 is characterized in that: described lighting source is to be several lighting sources that spacing distance is arranged side by side.
3. detection system according to claim 1 and 2 is characterized in that: described lighting source is the LED lamp.
4. detection system according to claim 1 is characterized in that: described light collimation lens set synthesizes lens combination by several simple lenses through the splicing bonding mode.
5. detection system according to claim 1 is characterized in that: described quasi-parallel light is that dispersion angle is 15 ° a quasi-parallel light beam.
6. detection system according to claim 1 is characterized in that: described amalgamation is for splice the light of the quasi-parallel light source of each small size in one direction.
7. detection system according to claim 1 is characterized in that: described detection system also comprises the shading catch.
8. detection system according to claim 1 is characterized in that: the quasi-parallel illumination light field and the testee width of described wide cut adapt.
9. detection system according to claim 1 is characterized in that: the air line distance of described each lighting source distance light collimation lens set is the focal length of lens.
10. detection system according to claim 1 is characterized in that: described image pickup part is a linear array CCD camera.
CN2011104063612A 2011-12-09 2011-12-09 System for detecting three-dimensional defects on surface of large-breadth adhesive label Pending CN102495070A (en)

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CN2011104063612A CN102495070A (en) 2011-12-09 2011-12-09 System for detecting three-dimensional defects on surface of large-breadth adhesive label

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102759532A (en) * 2012-07-31 2012-10-31 北京华夏视科图像技术有限公司 Infrared and visible light combined light source for transillumination
CN106501267A (en) * 2016-10-18 2017-03-15 凌云光技术集团有限责任公司 Linear light source device and system for surface defects detection
CN113600509A (en) * 2021-08-02 2021-11-05 京东科技控股股份有限公司 System, method and device for detecting sticking defect of transparent label

Citations (3)

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Publication number Priority date Publication date Assignee Title
CN1343894A (en) * 2001-10-22 2002-04-10 中国科学院上海光学精密机械研究所 Dynamic optical coupler for optical communication
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Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
CN1343894A (en) * 2001-10-22 2002-04-10 中国科学院上海光学精密机械研究所 Dynamic optical coupler for optical communication
CN101046624A (en) * 2006-03-31 2007-10-03 Hoya株式会社 Pattern defect detection device, pattern defect detection method and manufacturing method for photomask
US20080049286A1 (en) * 2006-08-25 2008-02-28 Samsung Electronics Co., Ltd. Beam scanning lens, beam scanning apparatus having the same, and image forming apparatus and method thereof

Non-Patent Citations (1)

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Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102759532A (en) * 2012-07-31 2012-10-31 北京华夏视科图像技术有限公司 Infrared and visible light combined light source for transillumination
CN106501267A (en) * 2016-10-18 2017-03-15 凌云光技术集团有限责任公司 Linear light source device and system for surface defects detection
CN113600509A (en) * 2021-08-02 2021-11-05 京东科技控股股份有限公司 System, method and device for detecting sticking defect of transparent label

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Application publication date: 20120613