CN102818195A - High uniformity, high power and high light LED (Light Emitting Diode) light source applied to visual inspection - Google Patents
High uniformity, high power and high light LED (Light Emitting Diode) light source applied to visual inspection Download PDFInfo
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- CN102818195A CN102818195A CN2012102993734A CN201210299373A CN102818195A CN 102818195 A CN102818195 A CN 102818195A CN 2012102993734 A CN2012102993734 A CN 2012102993734A CN 201210299373 A CN201210299373 A CN 201210299373A CN 102818195 A CN102818195 A CN 102818195A
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Abstract
The invention discloses a high uniformity, high power and high light LED (Light Emitting Diode) light source applied to visual inspection. The high uniformity, high power and high light LED light source applied to visual inspection mainly solves the problems that in the prior art, ray emitted by an LED is insufficient in brightness and the uniformity of formed beams is not high. The high uniformity, high power and high light LED (Light Emitting Diode) light source applied to visual inspection comprises a base plate, a light emitting diode arranged on the base plate, a first reflector and a second reflector arranged on both sides of the light emitting diode, a scatter plate arranged between the first and second reflectors, and light blocking devices respectively arranged outside the first and second reflectors, wherein the scatter plate is located above the light emitting diode. Through the technical scheme, important meaning of the high uniformity, high power and high light LED light source applied to visual inspection for detecting a linear array collecting system of a high reflective object is realized so that the high uniformity, high power and high light LED light source applied to visual inspection has huge development potential in the market, and is high in cost performance, strong in pertinence and low in manufacturing cost. Therefore, the high uniformity, high power and high light LED light source applied to visual inspection provided by the invention has high practical value and promotional value.
Description
Technical field
The present invention relates to a kind of lighting device, specifically, relate to a kind of high uniformity high-power and high-luminance LED light source that is applied to vision-based detection.
Background technology
The height of object imaging quality is the key that the defective to the body surface necessary being detects.For example the surface to metal, plastics, paper and fiber and other material is carried out to picture, and detects the defective that its surface exists, and is a kind of defects detection wherein.
Various material surface defectives are detected; Must guarantee that at first captured image definition of coming out is high, and thus material carried out imaging operation, and then could be according to the defective on the situation test material surface of imaging; Therefore, the quality of imaging is the key factor that influences defects detection work.Yet, present technology, its accuracy of detection to the material surface defective is generally not high, detects the gained result and compares with truth, and error is bigger.Trace it to its cause; Still be that early stage is not satisfactory to the shooting situation of material surface, when utilizing line-scan digital camera that material is taken continuously, owing to do not make material surface receive light technology uniformly; Thereby make that line-scan digital camera various piece daylighting on material surface is inhomogeneous; Influence shooting effect, also had influence on the quality of last image, and then brought great inconvenience for the testing in later stage.
Summary of the invention
The object of the present invention is to provide a kind of high uniformity high-power and high-luminance LED light source that is applied to vision-based detection, it is not enough mainly to solve the light luminance that LED sends in the prior art, and the not high problem of beam uniformity that forms.
To achieve these goals, the technical scheme of the present invention's employing is following:
A kind of high uniformity high-power and high-luminance LED light source that is applied to vision-based detection; Comprise substrate; Be arranged at the light emitting diode on the substrate; Be arranged at first speculum and second speculum at light emitting diode two ends respectively, be arranged between first speculum and second speculum and be positioned at the scatter plate directly over the said light emitting diode, and be arranged at first speculum and the outside light-baffling device of second speculum; And first speculum and second speculum parallel.
Further, said substrate below is connected with heat conductive pad, below this heat conductive pad, then is provided with base.
Again further, said first speculum is connected through the speculum cushion block with second speculum.
Further; Said light-baffling device comprises the back light barrier; Be fixed in the preceding light barrier on the base through screw; And be used for preceding light barrier and back light barrier closely are fixed on first speculum and the outside light barrier fixed block of second speculum, and this fixed block that is in the light is used to clamp first speculum and second speculum.
In addition, the both sides of said base also are respectively equipped with and are used for first speculum, second speculum, scatter plate and speculum cushion block are fixed in the lateral bolster bracer on the base.
In order better to realize the present invention, said substrate and light emitting diode are welded as a whole, and fix through setscrew and base.
As a kind of preferred, said scatter plate is adhesively fixed between first speculum and second speculum.
In addition, said lateral bolster bracer outer wall is provided with the screw more than three, convenient camera or other shooting instruments and the present invention is fixed.
Specifically, said substrate is made from aluminum and forms, and said heat conductive pad is made by silicon, and said base is heat sink for what done by copper to form.
Design principle of the present invention is; After the present invention's energising, electric current is supplied with light emitting diode through the circuit on the substrate, makes it luminous; And the light part that light emitting diode sends shines directly into the scatter plate lower surface, and is scattered the back in scatter plate inside and penetrates from the scatter plate upper surface; Another part shines on the reflecting surface of reflecting surface and second reflective mirror of first reflective mirror; And between the reflecting surface of the reflecting surface of first reflective mirror and second reflective mirror, reflect; On the last lower surface that shines scatter plate equally and be scattered the back in scatter plate inside and penetrate from the scatter plate upper surface; The brightness of the light that penetrates from the scatter plate upper surface is very high and uniformity is also very high; Can satisfy the demand of the line-scan digital camera acquisition system of high line frequency fully, improve the quality of image widely, and in the linear array acquisition system that detects high reflecting object, be significant.
Compared with prior art, the present invention has following beneficial effect:
(1) light emitting diode of the present invention both sides are provided with first speculum and second speculum; In the reflection cavity that first speculum that most light of light source has all been got into parallel and second speculum form; Penetrate from scatter plate again; Improved the utilization rate of LED light-emitting line, and improved the brightness of LED light, made it can satisfy the demand of the line-scan digital camera acquisition system of high line frequency;
(2) the present invention is provided with scatter plate; The light that can light emitting diode directly be launched and be high uniformity light through the light scattering after first speculum and second mirror reflects; Be applicable to the application of the linear array acquisition system of high reflecting object, can reach the illuminating effect of uniformity;
(3) the present invention is little a lot of through light source volume ratio high-power strip light of tradition or the linear light that scatter plate penetrates, and can adapt to the detection of high-resolution wisp;
(4) the present invention is provided with light-baffling device, can block the light that leaks out from lumination of light emitting diode face periphery effectively, prevents that irradiate light from arriving other local or human eye;
(5) the present invention is provided with heat conductive pad, and the heat that can effectively light emitting diode be sent is delivered on the base through heat conductive pad evenly and rapidly, has avoided light emitting diode because the overheated generation that causes fault;
(6) the present invention is provided with the lateral bolster bracer, can with scatter plate of the present invention, speculum cushion block, first speculum and the second speculum overall fixed on base, guarantee of the present invention stable; And on lateral bolster bracer outer wall, be provided with a plurality of screws, convenient camera and other shooting instruments and the present invention fixed, with the effect of guaranteeing to take;
(7) cost performance of the present invention is high, and is with strong points, and low cost of manufacture, in the linear array acquisition system that detects high reflecting object, is significant, and on market, has very big development potentiality, and therefore, the present invention has very high practical value and promotional value.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the side view of Fig. 1.
Fig. 4 is the front view of Fig. 1.
Fig. 5 be Fig. 4 B-B to structural representation.
In the above-mentioned accompanying drawing, the corresponding name of Reference numeral is called:
The 1-substrate, 2-light emitting diode, 3-first speculum, 4-second speculum, 5-scatter plate; 6-speculum cushion block, 7-lateral bolster bracer, 8-setscrew, 9-heat conductive pad, 10-base; Light barrier before the 11-, 12-light barrier fixed block, light barrier behind the 13-, 14-screw.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further, embodiment of the present invention includes but not limited to the following example.
Embodiment
Shown in Fig. 1～5, a kind of high uniformity high-power and high-luminance LED light source that is applied to vision-based detection comprises substrate 1, light emitting diode 2, first speculum 3, second speculum 4, scatter plate 5, base 10 and light-baffling device.
Said light emitting diode 2 is welded on the substrate 1, and this substrate 1 fixes through setscrew 8 with base 10, and this substrate is made from aluminum and forms; More firm for what substrate was connected with base, so substrate and base are tightened together through setscrew 8; The high heat that produces for can be fast with lumination of light emitting diode the time is delivered on the base; And subsequently heat is passed to the external heat sink that links to each other with base; So between substrate and base, be provided with the heat conductive pad 9 that is made by silicon, and this base be copper do to form heat sink.Said first speculum 3 and second speculum 4 are near the light emitting diode two ends; Said scatter plate 5 be adhered between first speculum 3 and second speculum and be positioned at light emitting diode directly over; Yet first speculum is connected through the speculum cushion block 6 that is arranged at first speculum and the second speculum both sides with second speculum; The speculum cushion block is to be used for first speculum and second speculum spaced apartly, and this distance is decided according to the profile of light emitting diode.Said light-baffling device comprises the back light barrier 13 that is arranged at the second speculum outer wall; Be arranged at the preceding light barrier 11 of the first speculum outer wall; And it is outside and clamp the fixed block 12 that is in the light of second speculum and first speculum to be used for that preceding light barrier and back light barrier closely are fixed on second speculum and first speculum, and this preceding light barrier is fixed on the base through screw 14; This light-baffling device can be used to block the light that the light-emitting area of light emitting diode leaks out, to such an extent as to can not shine the dispersion that light is caused in other place, perhaps shining human eye influences personnel operation.
For better fixing each parts of the present invention; Also be connected with in the both sides of said base and be used for first speculum, second speculum, scatter plate and speculum cushion block are fixed in the lateral bolster bracer 7 on the base through screw; Also be provided with three screw on this lateral bolster bracer outer wall; Convenient camera and other shooting instruments and the present invention are fixed, with the effect of guaranteeing to take.
On the basis of above-mentioned hardware unit, the use in the face of whole device is described in detail down.
The present invention is installed on the corresponding apparatus, and on the screw of two lateral bolster bracer outer walls, single camera is installed, be used for determinand is taken, as: metal, plastic or other material are detected.At first energized, and unlatching light emitting diode, this moment, light emitting diode just emitted beam, and a light part shines directly into scatter plate, in scatter plate, is scattered the back and penetrates; Another part reflects between first speculum and second speculum; Shining scatter plate at last equally carries out penetrating after the scattering; Determinand is thrown light on uniformly; The while camera also begins the illumination zone to be taken, and shooting results is transferred to the processing of carrying out next step on the relevant detection equipment.Whole illumination shooting process continues to carry out along with moving of determinand, when whole determinand fully through source region and take when finishing, but just deenergization, whole illumination shooting process is just accomplished.
Through overtesting; Utilize the present invention that determinand is thrown light on; And carry out the picture quality that the picture quality after the photographing process handles than prior art and have significant raising, and when detecting high reflecting object, can not form light and dark striped, adapt to the detection of high-resolution wisp equally; The result that its subsequent detection draws compares with truth, and error is less than 0.5%.The present invention is structural design cleverly; Increased substantially the quality of material imaging, with strong points, also greatly made things convenient for the accurate detection of staff to fault in material; The present invention is compared to prior art; Have substantial characteristics and marked improvement, therefore, the present invention has very high practical value and promotional value.
According to the foregoing description, just can realize the present invention well.
Claims (10)
1. high uniformity high-power and high-luminance LED light source that is applied to vision-based detection; It is characterized in that; Comprise substrate (1); Be arranged at the light emitting diode (2) on the substrate (1); Be arranged at first speculum (3) and second speculum (4) at light emitting diode (2) two ends respectively, be arranged between first speculum (3) and second speculum (4) and be positioned at the scatter plate (5) directly over the said light emitting diode (2), and be arranged at first speculum (3) and the outside light-baffling device of second speculum (4).
2. a kind of high uniformity high-power and high-luminance LED light source that is applied to vision-based detection according to claim 1 is characterized in that, said substrate (1) below is connected with heat conductive pad (9), then is provided with base (10) in this heat conductive pad (9) below.
3. a kind of high uniformity high-power and high-luminance LED light source that is applied to vision-based detection according to claim 2 is characterized in that said first speculum (3) is connected through speculum cushion block (6) with second speculum (4).
4. a kind of high uniformity high-power and high-luminance LED light source that is applied to vision-based detection according to claim 3; It is characterized in that; Said light-baffling device comprises back light barrier (13); Be fixed in the preceding light barrier (11) on the base (10) through screw (14), and be used for preceding light barrier (11) and back light barrier (13) closely are fixed on first speculum (3) and the outside light barrier fixed block (12) of second speculum (4).
5. a kind of high uniformity high-power and high-luminance LED light source that is applied to vision-based detection according to claim 4; It is characterized in that the both sides of said base (10) also are respectively equipped with and are used for first speculum (3), second speculum (4), scatter plate (5) and speculum cushion block (6) are fixed in the lateral bolster bracer (7) on the base (10).
6. a kind of high uniformity high-power and high-luminance LED light source that is applied to vision-based detection according to claim 5; It is characterized in that; Said substrate (1) is welded as a whole with light emitting diode (2), and fixes through setscrew (8) and base (10).
7. a kind of high uniformity high-power and high-luminance LED light source that is applied to vision-based detection according to claim 6 is characterized in that said scatter plate (5) is adhered between first speculum (3) and second speculum (4).
8. a kind of high uniformity high-power and high-luminance LED light source that is applied to vision-based detection according to claim 7 is characterized in that said lateral bolster bracer (7) outer wall is provided with the screw more than three.
9. according to each described a kind of high uniformity high-power and high-luminance LED light source that is applied to vision-based detection of claim 2～8, it is characterized in that said substrate (1) is made from aluminum and forms, said heat conductive pad (9) is made by silicon.
10. a kind of high uniformity high-power and high-luminance LED light source that is applied to vision-based detection according to claim 9 is characterized in that, said base (10) is heat sink for what done by copper to form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210299373.4A CN102818195B (en) | 2012-08-22 | 2012-08-22 | High uniformity, high power and high light LED (Light Emitting Diode) light source applied to visual inspection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210299373.4A CN102818195B (en) | 2012-08-22 | 2012-08-22 | High uniformity, high power and high light LED (Light Emitting Diode) light source applied to visual inspection |
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| Publication Number | Publication Date |
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| CN102818195A true CN102818195A (en) | 2012-12-12 |
| CN102818195B CN102818195B (en) | 2014-12-17 |
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| CN201210299373.4A Active CN102818195B (en) | 2012-08-22 | 2012-08-22 | High uniformity, high power and high light LED (Light Emitting Diode) light source applied to visual inspection |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010043956A1 (en) * | 2008-10-16 | 2010-04-22 | Teodoro Carvali | Led projector to produce particular light and colour effects |
| CN201555106U (en) * | 2009-12-15 | 2010-08-18 | 方向阳 | Special light source for large area vision detection |
| TW201204976A (en) * | 2010-04-23 | 2012-02-01 | Koninkl Philips Electronics Nv | LED-based lighting unit |
| CN202719446U (en) * | 2012-08-22 | 2013-02-06 | 电子科技大学 | High-brightness high-power light emitting diode (LED) light source |
-
2012
- 2012-08-22 CN CN201210299373.4A patent/CN102818195B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010043956A1 (en) * | 2008-10-16 | 2010-04-22 | Teodoro Carvali | Led projector to produce particular light and colour effects |
| CN201555106U (en) * | 2009-12-15 | 2010-08-18 | 方向阳 | Special light source for large area vision detection |
| TW201204976A (en) * | 2010-04-23 | 2012-02-01 | Koninkl Philips Electronics Nv | LED-based lighting unit |
| CN202719446U (en) * | 2012-08-22 | 2013-02-06 | 电子科技大学 | High-brightness high-power light emitting diode (LED) light source |
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| CN102818195B (en) | 2014-12-17 |
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