CN102865514B - Surface defect detection line light source - Google Patents
Surface defect detection line light source Download PDFInfo
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- CN102865514B CN102865514B CN201210350611.XA CN201210350611A CN102865514B CN 102865514 B CN102865514 B CN 102865514B CN 201210350611 A CN201210350611 A CN 201210350611A CN 102865514 B CN102865514 B CN 102865514B
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- led light
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- resettlement groove
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Abstract
The invention discloses a surface defect detection line light source which comprises a seat body, a light-emitting diode (LED) luminous source and a cylindrical convex lens, wherein the seat body is provided with a luminous source mounting groove along an extension direction; the LED luminous source is obliquely arranged in the mounting groove and has a variable angle; and the cylindrical convex lens and a notch of the mounting groove are configured and the cylindrical convex lens is detachably arranged in the notch. According to the surface defect detection line light source, the detection effect can be effectively improved.
Description
Technical field
The present invention relates to surface defects detection technology, be specifically related to the line source for surface defects detection.
Background technology
Defects detection typically refers to the detection to article surface defect, and surface defects detection is to adopt advanced mechanical vision inspection technology, and the spot of surface of the work, pit, cut, aberration, the defect such as damaged are detected.
Current, in the whole production process in the fields such as electronics production, SMT surface mount, all need electronic component to relating to, paster etc. to carry out Quality Detection and the quality management and control of outward appearance, irradiation by light source checks whether element, paster surface have the defects such as foreign matter or cut, discharge in advance sub-standard element, paster, avoid the waste that the later stage does over again.
The light source using is at present generally ordinary light source, as common light sources such as fluorescent lamp, incandescent lamp, Halogen lamp LEDs, is radiated at the surfaces such as element, paster, then observes by video camera.In actual use procedure, there is many problems in these ordinary light sources:
(1) brightness irregularities, impact detects effect;
(2) heat producing is high, reduction of service life;
(3) power consumption is large, wastes energy.
Summary of the invention
The present invention is directed to existing surface defects detection and adopt the existing problem of ordinary light source with light source, and a kind of surface defects detection line source is provided.This line source can effectively solve the existing problem of existing ordinary light source.
In order to achieve the above object, the present invention adopts following technical scheme:
A surface defects detection line source, comprising:
Pedestal, described pedestal is provided with light emitting source resettlement groove along its bearing of trend;
LED light emitting source, oblique being placed in resettlement groove of described LED light emitting source, and variable-angle;
Cylindrical convex lens, the notch configuration of described cylindrical convex lens and resettlement groove, and dismountable being placed in notch.
In preferred embodiment of the present invention, described pedestal adopts aluminium alloy to make.
Further, on described pedestal, on the outer surface relative with resettlement groove bottom, be provided with radiating groove.
Further, described LED light emitting source is distributed in resettlement groove with the array way of three row, and every row LED light emitting source is in same plane.
Further, the oblique angle between described LED light emitting source and resettlement groove requires the defect characteristic of detection corresponding with measured object, and excursion is between 0 ° to 90 °.
Further, when the oblique angle between described LED light emitting source and resettlement groove is 0 °, LED light emitting source forms line source.
Further, described LED light emitting source is combined by the LED light emitting source of multiple color.
The present invention who obtains according to such scheme adopts LED light emitting source to replace existing ordinary light source, and is focused on by cylindrical convex lens, makes light luminance even, guarantees to detect effect.
The aluminum base simultaneously adopting has good radiating effect, effectively extends the service life of LED.
Moreover the LED light emitting source of oblique arrangement is realized oblique irradiation, has expanded the detection range of blemish; By the setting sun of different directions, can the trickle cut in finding surface.
Finally, LED light emitting source can be comprised of multiple color, is convenient to detect analyze.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, further illustrate the present invention.
Fig. 1 is structural representation of the present invention;
Fig. 2 is explosive view of the present invention;
Fig. 3 is fundamental diagram of the present invention.
The specific embodiment
For technological means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
From Fig. 1 and Fig. 2, surface defects detection line source 100 provided by the invention comprises that pedestal 101, light emitting source 102 and convex lens 103 form.
The main body that pedestal 101 is whole light source, for carrying other parts, its integral body is rectangular structure, position, intermediate portion offers a light emitting source resettlement groove 101a along its bearing of trend.
Owing to needing to install light emitting source 102 in pedestal 101, therefore it need to have thermal diffusivity well.The whole aluminium alloy that adopts of this pedestal 101 is made in the present invention, and the pedestal 101 forming so had both had radiating effect well, also had as the required intensity of main element.
In order further to improve radiating effect, on pedestal 101 with resettlement groove 101a bottom with respect to lateral surface on be distributed with some radiating groove 101b.These radiating grooves 101b is uniformly distributed along the bearing of trend of pedestal 101.
Cylindrical convex lens 103 matches with resettlement groove 101a, and the light sending for the light emitting source 102 in resettlement groove 101a on pedestal 101 focuses on, and forms rectangular light.This cylindrical convex lens 103 is placed in the notch place of resettlement groove 101a.
For the ease of installing, the present invention on the notch inwall of resettlement groove 101a symmetrical be provided with match with cylindrical convex lens 103 both sides assign groove 101c, cylindrical convex lens 103 directly assigns into be assigned in groove 101c, both convenient installation, for convenience detach again.
For avoiding cylindrical convex lens 103 landing from resettlement groove 101c, at the two ends of pedestal 101, be provided with limiting plate 101d, effectively stop cylindrical convex lens 103 to move along resettlement groove 101c.
For cylindrical convex lens 103, it structurally needs to calculate focusing distance by the testing requirement of measured object, then by the distance focusing on, calculates the radius of the radian of cylindrical mirror.
For the light emitting source 102 in the present invention, adopt LED light emitting source, these LED light emitting sources 102 adopt array way to be placed in resettlement groove, each LED light emitting source is oblique being placed in resettlement groove respectively, it is 0 °-90 ° that its angle can be designed as with the angle of resettlement groove by detection demand, but different detection demands need design different angles.Form like this light of oblique irradiation, expanded detection range.
When concrete installation LED light emitting source 102, can in resettlement groove, can there is by the required angle of inclination design one of LED light emitting source 102 the aluminium alloy step of this angle, again LED light emitting source 102 is placed in this step to the object that tilts to install to reach LED light emitting source 102.
When the angle of inclination between LED light emitting source 102 and resettlement groove is 0 °, be just equivalent to a common line source.But compare with common line source, the defect that light source of the present invention is oblique is irradiated to detected material is during as trickle cut, and it is reflected to magazine defect part image can be more obvious, and (seeing figure) is convenient to identification, thereby expanded detection range.
The concrete array way adopting for LED light emitting source 102 of the present invention, can determine according to the actual requirements, as an example, in the present invention, LED light emitting source 102 adopts the array way of three row, and every row's 3 three LEDs light emitting sources are in same plane, forming thus three row intersects and to be angle (oblique irradiation and variable-angle, LED as detailed above) is light source.
In order further to improve, detect effect, LED light emitting source 102 in the present invention is except monochrome, also can adopt different colours, as adopted R(red) LED light emitting source, G(be green) LED light emitting source, B(be blue) combination of three kinds of primary colours of LED light emitting source, but its color is not limited to this, determines according to the actual requirements.
When the LED light emitting source 102 by multiple color throws light on, form the combination light of multiple different colours, certain color being extracted wherein by camera during detection is carried out graphical analysis, by the setting sun of 2 directions, and can the trickle cut in finding surface.
While detecting trickle cut by line source, as found trickle cut, illumination must have a certain degree with the direction shape of cut, but because cut is rambling, probably consistent with the direction of illumination.If carry out illumination from 2 directions, cut is certain to and a light shape wherein has a certain degree, and is certain to be found.Therefore by the setting sun of 2 directions, trickle cut that can any direction in finding surface.
Referring to Fig. 3, the surface defects detection line source that forms according to such scheme 100 its when work, the first step, places camera or camera lens 200, surface defects detection line source 100 and testee 300 according to corresponding positions.
Second step, in surface defects detection line source 100, the luminous generation three row intersections of LED light emitting source 102 are the light of angle, and these light enter into cylindrical convex lens 103.
The 3rd step, 103 pairs of these light focusings of convex lens form rectangular illuminating ray 104.
The 4th step, rectangular illuminating ray 104 shines to testee 300.
The 5th step, testee 300 produces reflection ray 301 upwards, and this reflection ray 301 shines to camera or camera lens 200.
The 6th step, camera is taken pictures or lens imaging.
More than show and described basic principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and description, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (5)
1. a surface defects detection line source, comprising:
Pedestal, described pedestal is provided with light emitting source resettlement groove along its bearing of trend;
LED light emitting source, oblique being placed in resettlement groove of described LED light emitting source, and variable-angle;
Cylindrical convex lens, the notch configuration of described cylindrical convex lens and resettlement groove, and dismountable being placed in notch;
Oblique angle between described LED light emitting source and resettlement groove requires the defect characteristic of detection corresponding with measured object, and excursion is between 0 ° to 90 °;
Described LED light emitting source is distributed in resettlement groove with the array way of three row, and every row LED light emitting source is in same plane; Form thus the LED light source that three row intersections are angle.
2. a kind of surface defects detection line source according to claim 1, is characterized in that, described pedestal adopts aluminium alloy to make.
3. a kind of surface defects detection line source according to claim 1, is characterized in that, on described pedestal, on the outer surface relative with resettlement groove bottom, is provided with radiating groove.
4. a kind of surface defects detection line source according to claim 1, is characterized in that, when the oblique angle between described LED light emitting source and resettlement groove is 0 °, LED light emitting source forms line source.
5. according to a kind of surface defects detection line source described in any one in claim 1 to 4, it is characterized in that, described LED light emitting source is combined by the LED light emitting source of multiple color.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210350611.XA CN102865514B (en) | 2012-09-18 | 2012-09-18 | Surface defect detection line light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210350611.XA CN102865514B (en) | 2012-09-18 | 2012-09-18 | Surface defect detection line light source |
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| Publication Number | Publication Date |
|---|---|
| CN102865514A CN102865514A (en) | 2013-01-09 |
| CN102865514B true CN102865514B (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210350611.XA Active CN102865514B (en) | 2012-09-18 | 2012-09-18 | Surface defect detection line light source |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106657708B (en) * | 2016-11-23 | 2018-06-08 | 北京恒通安泰科技有限公司 | Lighting device and image capturing system as line source |
| JP6954142B2 (en) * | 2018-01-17 | 2021-10-27 | オムロン株式会社 | Image inspection equipment and lighting equipment |
| CN111982535B (en) * | 2020-08-20 | 2022-09-13 | 海南热带汽车试验有限公司 | Detection device for corrosion test is reinforceed to electric motor car |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61105404A (en) * | 1984-10-29 | 1986-05-23 | Fujitsu Ltd | Pattern detecting device |
| WO1989003987A1 (en) * | 1987-10-20 | 1989-05-05 | Miki Méréstechnikai Fejleszto^" Vállalat | Apparatus for quality control of hypodermic needles |
| JP4836231B2 (en) * | 2005-06-28 | 2011-12-14 | 有限会社シマテック | LED lighting device |
| CN202171177U (en) * | 2011-07-20 | 2012-03-21 | 周明乾 | LED (Light Emitting Diode) explosion-proof roadway lamp |
| CN202769471U (en) * | 2012-09-18 | 2013-03-06 | 上海创波光电科技有限公司 | Surface defect detection line light source |
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| CN102865514A (en) | 2013-01-09 |
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