CN202903689U - Presswork surface quality detecting device - Google Patents
Presswork surface quality detecting device Download PDFInfo
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- CN202903689U CN202903689U CN 201220435384 CN201220435384U CN202903689U CN 202903689 U CN202903689 U CN 202903689U CN 201220435384 CN201220435384 CN 201220435384 CN 201220435384 U CN201220435384 U CN 201220435384U CN 202903689 U CN202903689 U CN 202903689U
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Abstract
The utility model discloses a presswork surface quality detecting device, which comprises a parallel and uniform high-brightness light source, wherein the parallel and uniform high-brightness light source emits uniform and parallel light-brightness light to a detecting region, the incidence angle of the parallel high-brightness light incident at the surface of a presswork in the detecting region is an acute angle, an image pickup device receives emitted light rays which are sent out by the parallel and uniform high-brightness light source and are reflected at the surface of the presswork in the detecting region, and an included angle of a light axis of the pickup end of the image pickup device and the normal line of the plane of the detecting region is equal to the incidence angle of the parallel high-brightness light. The presswork surface quality detecting device can be used for carrying out fast and accurate surface quality detection on various kinds of plane and curved pressworks.
Description
Technical field
The utility model relates to a kind of printed matter surface quality detection device, belongs to the printed matter detection field.
Background technology
In recent years, along with becoming increasingly abundant of the continuous progress of detection technique, material material, in order to strengthen visual effect or to strengthen certain specific character (such as wearing quality, corrosion resistance etc.) on surface, printed matter surface often needs covering multi-layer material.Go wrong if print link, cause the situation of covering and the different design of medium on the printed matter surface, then not only can affect the outward appearance of printed matter, also can have influence on the individual features of printed matter, therefore need to detect printed matter surface, to ensure the quality of products.
At present, most of printed matter manufacturer still adopts the Manual Visual Inspection mode to come printed matter is detected, but, because the factors such as individual difference, fatiguability, there are the problems such as the testing staff is many, enterprise cost is high, be prone to undetected false retrieval, detection efficiency is low in this Manual Visual Inspection mode, can't guarantee the stability of product quality.
Defective for the Manual Visual Inspection mode, a kind of printed matter surface quality detection device based on realizing of Robot Vision has appearred at present, the situation that this device is selected absorption and reflected illumination light line spectrum section by the medium that obtains on the printed matter surface, come the colour deficient of printed matter surface is detected, and accuracy of detection is high, speed is fast, stability is high.But, this device only can detect the colour deficient of printed matter surface, can not the glossiness related defects of printed matter surface be detected, such as defectives such as transparent medium (such as gloss oil, overlay film) disappearance, scuffing, concavo-convex, concavo-convex and pattern register troubles, let alone the glossiness related defects to printed matter surface detects when detecting colour deficient.
The utility model content
The purpose of this utility model is to provide a kind of printed matter surface quality detection device, and this device can carry out fast, accurate and comprehensive detection to the printed matter surface quality.
To achieve these goals, the utility model has adopted following technical scheme:
A kind of printed matter surface quality detection device, it is characterized in that: it comprises parallel even highlighted light source, image-pickup device, this parallel even highlighted light source, the control end of image-pickup device is connected with the corresponding controling end of computer control system respectively, wherein: this parallel even highlighted light source is launched uniform parallel high-brightness light to surveyed area, to illuminate the printed matter surface that is in this surveyed area, the incident angle that incides this uniform parallel high-brightness light that is in this printed matter surface in this surveyed area is an acute angle, this image-pickup device receives light that this parallel even highlighted light source launches and via being in this printed matter surface in this surveyed area the light that penetrates after the reflection occurs, and the optical axis of the picked-up end of this image-pickup device and the angle of the normal on this plane, surveyed area place equal to incide the incident angle of this uniform parallel high-brightness light that is in this interior printed matter surface of this surveyed area.
Described image-pickup device is line scan camera, described surveyed area is wire, described parallel even highlighted light source is launched uniform parallel high-brightness light to the described surveyed area that is wire, and this line scan camera receives light that described parallel even highlighted light source launches and via being in described printed matter surface in the described surveyed area that is wire the light that penetrates after the reflection occurs; Described printed matter is placed on the conveyer and transmits, this conveyer so that on the described printed matter each surface portion to be detected through described surveyed area the time, taken by this line scan camera successively, detect to carry out surface quality.
Described printed matter is the planographic product, and described conveyer comprises conveyer chain and be installed in travelling belt on this conveyer chain that these planographic product transmit at this travelling belt.
Described printed matter is the flexography product, and described conveyer comprises cylinder and drive the control member that this cylinder rotates that these flexography product transmit at this cylinder.
If gather simultaneously glossiness, the colouring information of printed matter surface, then order is incided the incident angle of the described uniform parallel high-brightness light that is in the described printed matter surface in the described surveyed area greater than 0 degree and less than or equal to 35 degree; If only gather the glossiness information of printed matter surface, then order is incided the incident angle of the described uniform parallel high-brightness light that is in the described printed matter surface in the described surveyed area greater than 35 degree and less than 90 degree.
If gather simultaneously glossiness, the colouring information of printed matter surface, then order is incided the incident angle of the described uniform parallel high-brightness light that is in the described printed matter surface in the described surveyed area more than or equal to 10 degree and less than or equal to 35 degree; If only gather the glossiness information of printed matter surface, then order is incided the incident angle of the described uniform parallel high-brightness light that is in the described printed matter surface in the described surveyed area more than or equal to 55 degree and less than or equal to 75 degree.
Described parallel even highlighted light source comprises high-brightness luminous body, be provided with light collimator apparatus and light diffusion device in surface of emission the place ahead of this high-brightness luminous body, wherein: this high-brightness luminous body is great power LED particle array of source, this light collimator apparatus is plus lens, and this light diffusion device is brightness enhancement film and/or pervasion component.
The utility model has the advantages that: the utility model can carry out fast plane or flexography product surface quality that various composition materials are made, accurately detect, and accuracy of detection is high, stability is high, detection efficiency is high, is not prone to flase drop, undetected.
Description of drawings
Fig. 1 is the composition synoptic diagram of the first embodiment of the utility model printed matter surface quality detection device;
Fig. 2 is the composition synoptic diagram of the second embodiment of the utility model printed matter surface quality detection device;
Fig. 3 a is the interactional synoptic diagram of incident light and printed matter surface;
Fig. 3 b is the interactional synoptic diagram of printed matter surface that incident light and surface configuration change;
Fig. 4 is the composition synoptic diagram of parallel even highlighted light source.
Embodiment
As depicted in figs. 1 and 2, the utility model proposes a kind of printed matter surface quality detection device, it comprises parallel even highlighted light source 102, image-pickup device 101, the control end of this parallel even highlighted light source 102, image-pickup device 101 is connected with the corresponding controling end of computer control system 103 respectively, wherein:
This parallel even highlighted light source 102 is launched uniform parallel high-brightness light to surveyed area, (be printed matter such as the label 400 that indicates among Fig. 1 and Fig. 2 to illuminate the printed matter surface that is in this surveyed area, this printed matter 400 one side up is alleged printed matter surface herein), the incident angle that incides this uniform parallel high-brightness light that is in this printed matter surface in this surveyed area is an acute angle, the picked-up end of this image-pickup device 101 is towards this surveyed area, the rear light that penetrates of reflection occurs via this printed matter surface that is in this surveyed area in the light that these image-pickup device 101 these parallel even highlighted light sources 102 of reception are launched, the optical axis of the picked-up end of this image-pickup device 101 and the angle of the normal on this plane, surveyed area place equal to incide the incident angle of this uniform parallel high-brightness light that is in this printed matter surface in this surveyed area, as depicted in figs. 1 and 2, the incident angle of this uniform parallel high-brightness light is i, and the angle between the normal L on the optical axis of the picked-up end of this image-pickup device 101 and this plane, surveyed area place also is i.
In practice, in order to improve accuracy of detection and detection efficiency, can carry out following design to the utility model device:
Image-pickup device 101 is elected line scan camera as, surveyed area is wire, in the utility model, resolution according to line scan camera, the size of wire surveyed area generally is set as: length between between the 10mm-2000mm and width between 0.01mm-5mm, concrete size should design according to the actual requirements.Parallel even highlighted light source 102 is launched uniform parallel high-brightness light to the surveyed area that is wire, and this line scan camera receives light that parallel even highlighted light source 102 launches and via being in printed matter surface in the surveyed area that is wire the light that penetrates after the reflection occurs; Printed matter 400 is placed on the conveyer and transmits, this conveyer so that on the printed matter 400 each surface portion to be detected through surveyed area the time, taken by this line scan camera successively, detect to carry out surface quality.In practice, the length direction of wire surveyed area is vertical with the direction of motion (the namely direction of transfer of printed matter 400) of conveyer.
For the setting of line scan camera, conveyer and wire surveyed area, can make a plurality of printed matters 400 on conveyer, transmit at the uniform velocity, reposefully.For a printed matter 400, line scan camera can be taken respectively a plurality of surface portions continuous on this printed matter 400, each surface image that obtains behind these a plurality of surface portions of taking is synthesized a surface image, by this synthetic surface image is carried out analyzing and processing, realize the quality testing to respective surfaces on this printed matter 400.
For the setting of line scan camera, conveyer and wire surveyed area, in reality detected, printed matter can be the planographic product, also can be the flexography product.
If printed matter is the planographic product, then conveyer comprises conveyer chain and is installed in travelling belt 104 on this conveyer chain, and these planographic product transmit at this travelling belt 104, as shown in Figure 1.
If printed matter is the flexography product, then conveyer comprises cylinder 105 and drives the control member that this cylinder 105 rotates, and these flexography product transmit at this cylinder 105.It should be noted that when detecting flexography product surface quality, though printed matter surface is curved surface, but because surveyed area is wire, width is extremely narrow, therefore, in the utility model, there is not flexibility depending on this surveyed area that is wire, this surveyed area place face that is wire is the plane.
The principle that the utility model detects time institute's foundation is:
Printed matter generally is made of the surface part that is in the upper strata and the base material part that is in lower floor.Surface part comprises coating layer and/or gloss oil layer, and coating layer, gloss oil layer are smooth transparent materials, i.e. the weak material of glossiness height and diffusive property.Base material part comprises ink lay, and ink lay is the stronger material of diffusive property.
When light incides printed matter surface, printed matter material self-characteristic has determined the ability of its absorption to light, reflection and refraction, the reflection of printed matter surface is between diffuse reflection and mirror-reflection, be that a part of reflected energy satisfies the mirror-reflection rule, and another part satisfy the diffuse reflection rule.The direction of mirror-reflection light meets reflection law, and irreflexive light intensity space distribution meets Lambert cosine law.
Shown in Fig. 3 a, when light beam that parallel even highlighted light source 102 sends incides on the surface of printed matter 400 with incident angle i, energy distribution form after light beam and printed matter surface interact as shown in the figure, among the figure, a part of light of incident ray 301 is printed product 400 and absorbs and refraction, refracted ray is seen the label 302 among Fig. 3 a, another part light is reflected, form with reflection ray 303 penetrates, distribution form is similar to diffuse reflection, outline line 304 is the envelope that reflected beam energy distributes, and wherein, the mirror-reflection light 303a that light beam penetrates after via printed matter surface generation mirror-reflection is meeting on the direction of reflection law.
In the utility model, the glossiness information of printed matter surface refers to the mirror-reflection information of printed matter surface, and it is characterized by reflected energy and the reflection direction of mirror-reflection light.Therefore, in the utility model, when meeting reflection law between the incident angle of the angle of the normal on the optical axis of the picked-up end of image-pickup device 101 and plane, surveyed area place and incident ray, image-pickup device 101 gathers incident ray via rear each light that penetrates of printed matter surface reflection, wherein mainly comprise mirror-reflection light, so just can judge whether printed matter surface exists various glossiness related defects by reflected energy and reflection direction analysis to mirror-reflection light.For example, concavo-convex defective, scuffing defective can change the reflection direction of mirror-reflection light, and transparent medium disappearance defective can change the reflected energy of mirror-reflection light.For instance, compare with the printed matter shown in Fig. 3 a, when the shape of printed matter surface changed (triangle of Fig. 3 b protrusions represents the surface that shape changes), shown in Fig. 3 b, the direction of mirror-reflection light 303a changed.And be in when taking under other angle when image-pickup device 101, its image that collects is transparent, can't carry out the judgement of glossiness related defects.
In the utility model, the colouring information of printed matter surface refers to the colouring information that printed matter surface shows, and the color of printed matter surface is mainly embodied by ink lay, therefore, can be by the absorption of ink lay to incident ray, reflex is judged the color of printed matter surface, and the ink lay stronger material that is diffusive property, and no matter which kind of angle shot image-pickup device 101 is in, its brightness of image that photographs all approaches evenly and distributes, has preferably consistance, thereby, no matter which kind of angle shot image-pickup device 101 is in, analyze by the mirror-reflection light that image-pickup device 101 is collected, just can judge printed matter surface and whether have colour deficient.
In sum, in the utility model, be in the mirror-reflection light that meets on the reflection law direction by collection, just can obtain glossiness information and the colouring information of printed matter surface, thereby the color of printed matter surface, shape etc. are detected.It should be noted that, when only having the optical axis of the picked-up end of image-pickup device to be set to equal to incide the incident angle of this uniform parallel high-brightness light that is in this printed matter surface in this surveyed area with the angle of the normal on this plane, surveyed area place, could realize obtaining the purpose of the glossiness information of printed matter surface, and image-pickup device 101 is put come what may, as long as can receive the rear light that penetrates of light generation reflection that parallel even highlighted light source 102 is launched, can obtain the colouring information of printed matter surface.
Except the above, whether can the printed matter surface quality accurately be detected by colouring information, the glossiness information of the printed matter surface that obtains, also depend on the setting to the incident angle i of incident ray, certainly, the orientation angles that arranges of image-pickup device 101 should the corresponding adjusting with the variation of incident angle i.Specifically arrange as follows:
When incident angle i be in greater than 0 ° and less than or equal to 35 ° of these scopes in the time, the reflectivity of printed matter surface is relatively stable, the variation with incident angle i does not produce obvious difference, therefore, and the shared weight substantially constant of the glossiness information in the surface image and colouring information.That is to say, in reality detects, if will gather simultaneously glossiness, the colouring information of printed matter surface, then make the incident angle i that incides the uniform parallel high-brightness light that is in the printed matter surface in the surveyed area greater than 0 ° and less than or equal to 35 °, for example 2 °, 10 °, 15 °, 30 °, 35 °.Can find in practice, incide in season the incident angle i of the uniform parallel high-brightness light that is in the printed matter surface in the surveyed area more than or equal to 10 ° and less than or equal to 35 °, glossiness information and colouring information in the surface image that photographs like this can be more balanced, are beneficial to detection.
When incident angle i be in greater than 35 ° and less than 90 ° of these scopes in the time, along with the increase of incident angle i, the reflectivity of printed matter surface sharply increases, glossiness information weight in the surface image increases, and the colouring information weight reduces.That is to say, in reality detects, if only gather the glossiness information of printed matter surface, then make the incident angle i that incides the uniform parallel high-brightness light that is in the printed matter surface in the surveyed area greater than 35 ° and less than 90 °, such as: 36 °, 55 °, 60 °, 75 °, 85 °, 89 ° etc.Can find that in reality detects incident angle i preferably is in more than or equal to 55 ° and during less than or equal to 75 ° of scopes, the contrast of glossiness difference in surface image strengthens, and can improve the accuracy of detection to the glossiness related defects.
In the utility model, the light that this parallel even highlighted light source 102 sends is uniform, exit direction between each light that this parallel even highlighted light source 102 sends is consistent, be approximate being parallel to each other between each light, and the brightness of the light that sends of this parallel even highlighted light source 102 is high brightness.This parallel even highlighted light source 102 makes the light intensity that arrives printed matter surface higher, carries out high-speed exposure with the printed matter surface that can satisfy in 101 pairs of rapid movements of image-pickup device.
In actual design, this parallel even highlighted light source 102 can comprise high-brightness luminous body 201, is provided with light collimator apparatus 202 and light diffusion device 203 in surface of emission the place ahead of this high-brightness luminous body 201.For example, as shown in Figure 4, can be provided with successively light collimator apparatus 202, light diffusion device 203 before the surface of emission of this high-brightness luminous body 201.Certainly, surface of emission the place ahead of this high-brightness luminous body 201 also can be provided with light diffusion device 203, light collimator apparatus 202 successively.That is to say, this light collimator apparatus 202 and the installation order of this light diffusion device 203 before high-brightness luminous body 201 are hard-core, and this high-brightness luminous body 201, light collimator apparatus 202, light diffusion device 203 can the successively in tandem installation of order according to actual needs.
In practice, this high-brightness luminous body 201 is chosen as great power LED particle array of source, and this light collimator apparatus 202 is chosen as plus lens, and this light diffusion device 203 is chosen as brightness enhancement film and/or pervasion component, and pervasion component is diffusion barrier or diffuser plate.
The detection method of the utility model printed matter surface quality detection device comprises the steps:
Parallel even highlighted light source 102 is launched uniform parallel high-brightness light to the printed matter surface that is in the surveyed area, this uniform parallel high-brightness light reflects rear ejaculation via the printed matter surface that is in the surveyed area, the reflected light that penetrates is obtained by image-pickup device 101, the printed matter surface that 101 pairs of image-pickup devices are in the surveyed area is taken, thereby be in the surface image of the printed matter surface shooting in the surveyed area and the difference between the corresponding standard surface image (the standard surface image that obtains under the same terms) by 101 pairs of movement images capturing apparatus, the quality that 103 pairs of computer control systems are in this printed matter surface in the surveyed area detects.
In practice, before the uniform parallel high-brightness light of emission, at first should be according to optical absorption, reflection characteristics, accuracy of detection and the information to be detected (such as information to be detected such as glossiness information, colouring informations) of printed matter 400, regulate parallel even highlighted light source 102, image-pickup device 101 respectively and the orientation between the surveyed area, angle, distance.Generally between 50mm ~ 100mm, the distance between image-pickup device 101 and surveyed area is mainly determined by accuracy of detection distance between parallel even highlighted light source 102 and surveyed area.
For the utility model printed matter surface quality detection device, if need to obtain simultaneously glossiness and colouring information, then the order incident angle i that incides the uniform parallel high-brightness light that is in the printed matter surface in the surveyed area is for greater than 0 ° and less than or equal to 35 °, and for detection method of the present utility model:
The surface image that computer control system 103 is taken by image-pickup device 101 obtains glossiness information and colouring information, glossiness difference and color distortion between the surface image that movement images capturing apparatus 101 is taken and the corresponding standard surface image, judge whether this printed matter surface that is in the surveyed area exists abnormal area, and to the form of abnormal area, cluster is analyzed, and whether has concavo-convex defective thereby judge this printed matter surface that is in the surveyed area, scratch defective, transparent medium disappearance defective, colour deficient and concavo-convex and pattern register trouble defective (concavo-convex and pattern register trouble defective are the related defectives of a kind of and glossiness and color).If have wherein any one defective, think that then this printed matter surface is off quality.
For the utility model printed matter surface quality detection device, if only obtain glossiness information, then the order incident angle that incides the uniform parallel high-brightness light that is in the printed matter surface in the surveyed area is for greater than 35 degree and less than 90 degree, and for detection method of the present utility model:
The surface image that computer control system 103 is taken by image-pickup device 101 obtains glossiness information, glossiness difference between the surface image that movement images capturing apparatus 101 is taken and the corresponding standard surface image, judge whether this printed matter surface that is in the surveyed area exists abnormal area, and form, the cluster of abnormal area analyzed, whether there is concavo-convex defective, scratches defective and transparent medium disappearance defective thereby judge this printed matter surface that is in the surveyed area.If have wherein any one defective, think that then this printed matter surface is off quality.
In practice, for selecting line scan camera, conveyer and surveyed area to be set as the utility model of wire, a plurality of printed matters 400 transmit on conveyer at the uniform velocity, reposefully, these a plurality of printed matters 400 successively carry out the surface quality detection through detecting station, have realized the high-level efficiency testing process of many printed matters continuous detecting.In the process of a printed matter 400 through the detection station, line scan camera is taken respectively a plurality of surface portions continuous on this printed matter 400, then will take each surface image that obtains behind these a plurality of surface portions and synthesize a surface image, by this synthetic surface image is carried out analyzing and processing, realize the defects detection to printed matter surface corresponding to these a plurality of surface portions.
In the utility model, image-pickup device 101, computer control system 103, conveyer are known equipment, and its concrete formation no longer describes in detail.
The utility model has the advantages that:
The utility model can carry out fast plane or flexography product surface quality that various composition materials are made, accurately detect, and accuracy of detection is high, stability is high, detection efficiency is high.
It should be noted that, in the utility model, equal to incide the incident angle of this uniform parallel high-brightness light that is in this printed matter surface in this surveyed area just because of the optical axis of the picked-up end that makes image-pickup device and the angle of the normal on this plane, surveyed area place, the utility model just can realize obtaining the purpose of the glossiness information of printed matter surface.
Especially, the incident angle that incides in season the uniform parallel high-brightness light that is in the printed matter surface in the surveyed area is for greater than 0 ° and during less than or equal to 35 ° angle, the utility model can obtain glossiness, the colouring information on printed matter (referring to plane or flexography product that various composition materials are made) surface simultaneously, thereby to printed matter surface whether have concavo-convex defective, scratch defective, transparent medium disappearance defective, colour deficient and concavo-convexly judge with pattern register trouble defective, realization is to the complete detection of printed matter surface defective.And the incident angle that incides in season the uniform parallel high-brightness light that is in the printed matter surface in the surveyed area is for greater than 35 ° and during less than 90 ° angle, the utility model can obtain the glossiness information on printed matter (referring to plane or flexography product that various composition materials are made) surface, thereby whether exist concavo-convex defective, scuffing defective, transparent medium disappearance defective to judge to printed matter surface, realize the accurate detection to printed matter surface glossiness related defects.
In addition, in the utility model, (being that the beam projecting direction is consistent) parallel to each other between the light of being launched by the parallel even highlighted light source of high-brightness luminous body, light collimator apparatus and light diffusion installation composition, brightness are high and highly even, can carry out in the process of high-velocity scanning at line scan camera, within the time shutter that line scan camera is extremely lacked, make line scan camera obtain the reflection ray of enough brightness, be beneficial to detect.
Above-mentioned is preferred embodiment of the present utility model and the know-why used thereof; for a person skilled in the art; in the situation that does not deviate from spirit and scope of the present utility model; any based on apparent changes such as the equivalent transformation on the technical solutions of the utility model basis, simple replacements, all belong within the utility model protection domain.
Claims (7)
1. printed matter surface quality detection device, it is characterized in that: it comprises parallel even highlighted light source, image-pickup device, the control end of this parallel even highlighted light source, image-pickup device is connected with the corresponding controling end of computer control system respectively, wherein:
This parallel even highlighted light source is launched uniform parallel high-brightness light to surveyed area, to illuminate the printed matter surface that is in this surveyed area, the incident angle that incides this uniform parallel high-brightness light that is in this printed matter surface in this surveyed area is an acute angle, this image-pickup device receives light that this parallel even highlighted light source launches and via being in this printed matter surface in this surveyed area the light that penetrates after the reflection occurs, and the optical axis of the picked-up end of this image-pickup device and the angle of the normal on this plane, surveyed area place equal to incide the incident angle of this uniform parallel high-brightness light that is in this interior printed matter surface of this surveyed area.
2. printed matter surface quality detection device as claimed in claim 1 is characterized in that:
Described image-pickup device is line scan camera, described surveyed area is wire, described parallel even highlighted light source is launched uniform parallel high-brightness light to the described surveyed area that is wire, and this line scan camera receives light that described parallel even highlighted light source launches and via being in described printed matter surface in the described surveyed area that is wire the light that penetrates after the reflection occurs; Described printed matter is placed on the conveyer and transmits, this conveyer so that on the described printed matter each surface portion to be detected through described surveyed area the time, taken by this line scan camera successively, detect to carry out surface quality.
3. printed matter surface quality detection device as claimed in claim 2 is characterized in that:
Described printed matter is the planographic product, and described conveyer comprises conveyer chain and be installed in travelling belt on this conveyer chain that these planographic product transmit at this travelling belt.
4. printed matter surface quality detection device as claimed in claim 2 is characterized in that:
Described printed matter is the flexography product, and described conveyer comprises cylinder and drive the control member that this cylinder rotates that these flexography product transmit at this cylinder.
5. printed matter surface quality detection device as claimed in claim 2 is characterized in that:
If gather simultaneously glossiness, the colouring information of printed matter surface, then order is incided the incident angle of the described uniform parallel high-brightness light that is in the described printed matter surface in the described surveyed area greater than 0 degree and less than or equal to 35 degree;
If only gather the glossiness information of printed matter surface, then order is incided the incident angle of the described uniform parallel high-brightness light that is in the described printed matter surface in the described surveyed area greater than 35 degree and less than 90 degree.
6. printed matter surface quality detection device as claimed in claim 2 is characterized in that:
If gather simultaneously glossiness, the colouring information of printed matter surface, then order is incided the incident angle of the described uniform parallel high-brightness light that is in the described printed matter surface in the described surveyed area more than or equal to 10 degree and less than or equal to 35 degree;
If only gather the glossiness information of printed matter surface, then order is incided the incident angle of the described uniform parallel high-brightness light that is in the described printed matter surface in the described surveyed area more than or equal to 55 degree and less than or equal to 75 degree.
7. printed matter surface quality detection device as claimed in claim 2 is characterized in that:
Described parallel even highlighted light source comprises high-brightness luminous body, is provided with light collimator apparatus and light diffusion device in surface of emission the place ahead of this high-brightness luminous body, wherein:
This high-brightness luminous body is great power LED particle array of source, and this light collimator apparatus is plus lens, and this light diffusion device is brightness enhancement film and/or pervasion component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220435384 CN202903689U (en) | 2012-08-29 | 2012-08-29 | Presswork surface quality detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220435384 CN202903689U (en) | 2012-08-29 | 2012-08-29 | Presswork surface quality detecting device |
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| CN202903689U true CN202903689U (en) | 2013-04-24 |
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| CN 201220435384 Expired - Fee Related CN202903689U (en) | 2012-08-29 | 2012-08-29 | Presswork surface quality detecting device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798637A (en) * | 2012-08-29 | 2012-11-28 | 北京大恒图像视觉有限公司 | Device and method for detecting surface quality of printed matters |
| CN106483080A (en) * | 2016-10-12 | 2017-03-08 | 东莞市美盈森环保科技有限公司 | A kind of printed matter color method for evaluating quality |
| CN107014832A (en) * | 2017-06-21 | 2017-08-04 | 深圳中天创图科技有限公司 | A kind of high reflective plane outward appearance detection linear light sorurce and detection method |
| CN108508012A (en) * | 2018-02-27 | 2018-09-07 | 东华大学 | A kind of textile visual style measuring device and method |
| CN112327524A (en) * | 2020-11-13 | 2021-02-05 | Tcl华星光电技术有限公司 | Method and device for inspecting substrate film defect |
-
2012
- 2012-08-29 CN CN 201220435384 patent/CN202903689U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798637A (en) * | 2012-08-29 | 2012-11-28 | 北京大恒图像视觉有限公司 | Device and method for detecting surface quality of printed matters |
| CN106483080A (en) * | 2016-10-12 | 2017-03-08 | 东莞市美盈森环保科技有限公司 | A kind of printed matter color method for evaluating quality |
| CN107014832A (en) * | 2017-06-21 | 2017-08-04 | 深圳中天创图科技有限公司 | A kind of high reflective plane outward appearance detection linear light sorurce and detection method |
| CN108508012A (en) * | 2018-02-27 | 2018-09-07 | 东华大学 | A kind of textile visual style measuring device and method |
| CN112327524A (en) * | 2020-11-13 | 2021-02-05 | Tcl华星光电技术有限公司 | Method and device for inspecting substrate film defect |
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