CN102865514A - Surface defect detection line light source - Google Patents
Surface defect detection line light source Download PDFInfo
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- CN102865514A CN102865514A CN201210350611XA CN201210350611A CN102865514A CN 102865514 A CN102865514 A CN 102865514A CN 201210350611X A CN201210350611X A CN 201210350611XA CN 201210350611 A CN201210350611 A CN 201210350611A CN 102865514 A CN102865514 A CN 102865514A
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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 the 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 the article surface defective, and surface defects detection is to adopt advanced mechanical vision inspection technology, and the spot of surface of the work, pit, cut, aberration, the defective such as damaged are detected.
Current, in the whole production process in the fields such as electronics production, SMT surface mount, all need the electronic component that relates to, paster etc. are carried out Quality Detection and the quality management and control of outward appearance, irradiation by light source checks whether element, paster surface have the defectives 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 that uses at present is generally ordinary light source, such as common light sources such as fluorescent lamp, incandescent lamp, Halogen lamp LEDs, is radiated at the surfaces such as element, paster, observes by video camera again.There are many problems in these ordinary light sources in the use procedure of reality:
(1) brightness irregularities, impact detects effect;
(2) heat that produces 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 existing problem of ordinary light source.
In order to achieve the above object, the present invention adopts following technical scheme:
A kind of surface defects detection line source comprises:
Pedestal, described pedestal is provided with the light emitting source resettlement groove along its bearing of trend;
The LED light emitting source, oblique being placed in the 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 the notch.
In preferred embodiment of the present invention, described pedestal adopts aluminium alloy to make.
Further, be provided with radiating groove on the outer surface relative with resettlement groove bottom on the described pedestal.
Further, described LED light emitting source is distributed in the 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 the resettlement groove and measured object require the defect characteristic that detects corresponding, and excursion is between 0 ° to 90 °.
Further, when the oblique angle between described LED light emitting source and the resettlement groove was 0 °, the LED light emitting source formed 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 the LED light emitting source to replace existing ordinary light source, and is focused on by cylindrical convex lens, so that light luminance is even, guarantees to detect effect.
The aluminum base that adopts simultaneously has good radiating effect, effectively prolongs the service life of LED.
Moreover the LED light emitting source of oblique arrangement is realized oblique irradiation, has enlarged the detection range of blemish; By the setting sun of different directions, can the trickle cut in finding surface.
At last, the LED light emitting source can be comprised of multiple color, is convenient to detect analyze.
Description of drawings
Further specify the present invention below in conjunction with the drawings and specific embodiments.
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 purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
By Fig. 1 and Fig. 2 as can be known, surface defects detection line source 100 provided by the invention comprises that pedestal 101, light emitting source 102 and convex lens 103 form.
Pedestal 101 is the main body of whole light source, is used for other parts of carrying, and its integral body is rectangular structure, and the position, intermediate portion offers a light emitting source resettlement groove 101a along its bearing of trend.
Owing to need to install light emitting source 102 in the pedestal 101, so it need to have well thermal diffusivity.These pedestal 101 whole aluminium alloys that adopt are made in the present invention, and the pedestal 101 that forms had so both had well radiating effect, 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 be distributed with some radiating groove 101b.These radiating grooves 101b evenly distributes along the bearing of trend of pedestal 101.
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 to assign among the groove 101c and get final product, both convenient installation was for convenience detach again.
For avoiding cylindrical convex lens 103 landing from resettlement groove 101c, be provided with limiting plate 101d at the two ends of pedestal 101, effectively stop cylindrical convex lens 103 to move along resettlement groove 101c.
For cylindrical convex lens 103, it structurally need calculate focusing distance by the testing requirement of measured object, calculates the radius of the radian of cylindrical mirror by the distance that focuses on again.
Adopt the LED light emitting source for the light emitting source 102 among the present invention, these LED light emitting sources 102 adopt array way to be placed in the resettlement groove, each LED light emitting source is oblique being placed in the resettlement groove respectively, its angle is 0 °-90 ° by the angle that the detection demand can be designed as with resettlement groove, but different detection demands need design different angles.Form like this light of oblique irradiation, enlarged detection range.
When concrete installation LED light emitting source 102, can in resettlement groove, can design an aluminium alloy step with this angle by LED light emitting source 102 required angles of inclination, again LED light emitting source 102 is placed in this step the purpose that tilts to install to reach LED light emitting source 102.
When the angle of inclination between LED light emitting source 102 and the resettlement groove is 0 °, just be equivalent to a common line source.But compare with common line source, light source of the present invention is oblique when shining the defective of detected material such as trickle cut, and it is reflected to magazine defect part image can be more obvious, and (seeing figure) is convenient to identification, thereby enlarged detection range.
Concrete array way for LED light emitting source 102 employings of the present invention, can decide according to the actual requirements, as an example, LED light emitting source 102 adopts the array way of three row among the present invention, and every row's 3 three LEDs light emitting sources are in same plane, forming thus three row, to intersect the LED be angle (oblique irradiation and variable-angle, specifically as mentioned above) be light source.
Detect effect in order further to improve, LED light emitting source 102 among the present invention is except monochrome, also can adopt different colours, as adopting 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, decides 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 that is 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.
When detecting trickle cut by line source, as finding trickle cut, illumination must have a certain degree with the direction shape of cut, but because cut is rambling, probably the direction with illumination is consistent.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 the setting sun by 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 position.
Second step, LED light emitting source 102 luminous generation three row intersections are the light of angle in the surface defects detection line source 100, and these light enter into cylindrical convex lens 103.
In the 3rd step, 103 pairs of these light focusings of convex lens form rectangular illuminating ray 104.
In the 4th step, rectangular illuminating ray 104 shines to testee 300.
In the 5th step, testee 300 produces reflection ray 301 upwards, and this reflection ray 301 shines to camera or camera lens 200.
In 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 describes in above-described embodiment and the specification 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 (7)
1. surface defects detection line source comprises:
Pedestal, described pedestal is provided with the light emitting source resettlement groove along its bearing of trend;
The LED light emitting source, oblique being placed in the 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 the notch.
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, is provided with radiating groove on the outer surface relative with resettlement groove bottom on the described pedestal.
4. a kind of surface defects detection line source according to claim 1 is characterized in that, described LED light emitting source is distributed in the resettlement groove with the array way of three row, and every row LED light emitting source is in same plane.
5. a kind of surface defects detection line source according to claim 1 is characterized in that, the oblique angle between described LED light emitting source and the resettlement groove and measured object require the defect characteristic that detects corresponding, and excursion is between 0 ° to 90 °.
6. a kind of surface defects detection line source according to claim 5 is characterized in that, when the oblique angle between described LED light emitting source and the resettlement groove was 0 °, the LED light emitting source formed line source.
7. each described a kind of surface defects detection line source in 6 according to claim 1 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 true CN102865514A (en) | 2013-01-09 |
| CN102865514B CN102865514B (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210350611.XA Active CN102865514B (en) | 2012-09-18 | 2012-09-18 | Surface defect detection line light source |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106657708A (en) * | 2016-11-23 | 2017-05-10 | 北京恒通安泰科技有限公司 | Lighting device acting as line light source and image collecting system |
| CN110044294A (en) * | 2018-01-17 | 2019-07-23 | 欧姆龙株式会社 | Image testing device and lighting device |
| CN111982535A (en) * | 2020-08-20 | 2020-11-24 | 海南热带汽车试验有限公司 | Detection device for corrosion test is reinforceed to electric motor car |
Citations (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 |
| JP2007010380A (en) * | 2005-06-28 | 2007-01-18 | Shimatec:Kk | Led illuminator |
| 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 |
-
2012
- 2012-09-18 CN CN201210350611.XA patent/CN102865514B/en active Active
Patent Citations (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 |
| JP2007010380A (en) * | 2005-06-28 | 2007-01-18 | Shimatec:Kk | Led illuminator |
| 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106657708A (en) * | 2016-11-23 | 2017-05-10 | 北京恒通安泰科技有限公司 | Lighting device acting as line light source and image collecting system |
| CN110044294A (en) * | 2018-01-17 | 2019-07-23 | 欧姆龙株式会社 | Image testing device and lighting device |
| CN111982535A (en) * | 2020-08-20 | 2020-11-24 | 海南热带汽车试验有限公司 | Detection device for corrosion test is reinforceed to electric motor car |
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| Publication number | Publication date |
|---|---|
| CN102865514B (en) | 2014-12-10 |
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