CN103090254B - Linear coaxial light source - Google Patents
Linear coaxial light source Download PDFInfo
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- CN103090254B CN103090254B CN201110331625.2A CN201110331625A CN103090254B CN 103090254 B CN103090254 B CN 103090254B CN 201110331625 A CN201110331625 A CN 201110331625A CN 103090254 B CN103090254 B CN 103090254B
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Abstract
The invention discloses a linear coaxial light source comprising a shell, a light emitting diode and a light collecting column. The shell is provided with a holding cavity, the light emitting diode is arranged at the bottom of the holding cavity, and the light collecting column is arranged on the front portion of the holding cavity. The linear coaxial light source further comprises a scattering plate which is arranged on the front portion of the holding cavity and in front of the light collecting column. By arranging the scattering plate in front of the light collecting column, light rays emitted from the light collecting column penetrate the scattering plate to form uniform light rays. Light rays emitted by the linear coaxial light source are good in uniformity and stability.
Description
Technical field
The present invention relates to light sources technical field, particularly relate to a kind of Linear coaxial light source.
Background technology
Line-scan digital camera is used in current all multiple production line on-the-spot meetings, and the IMAQ speed of line-scan digital camera is general very fast, therefore needs additional source of light to throw light on to provide enough brightness, and forms good illuminating effect.Existing Linear coaxial light source, comprise shell, light emitting diode, optically focused post, shell offers accommodating cavity, light emitting diode is arranged at the bottom of accommodating cavity, optically focused post is positioned at the inside of accommodating cavity, the light that light emitting diode sends, through the convergence of optically focused post, thus formation linear light source, optically focused post is external emission of light directly.But in prior art, the light that optically focused post is externally launched exists that uniformity is bad, the problem of less stable; Prior art provides illumination for line-scan digital camera, if it is reflective very strong to detect target, the image that line-scan digital camera collects then will there will be local and leak lamp, dazzle lamp phenomenon, other position then luminance shortage, there is the uneven and style phenomenon of the local luminous inconsistent image caused.
Summary of the invention
The invention provides a kind of good Linear coaxial light source of light uniformity of injection.
A kind of Linear coaxial light source, comprise shell, light emitting diode, optically focused post, shell offers accommodating cavity, light emitting diode is arranged at the bottom of accommodating cavity, optically focused post is arranged at the front portion of accommodating cavity, Linear coaxial light source also comprises scatter plate, and scatter plate is arranged at the front portion of accommodating cavity, and scatter plate is positioned at the front of optically focused post.
Wherein, also comprise diffusing panel, diffusing panel is arranged at the rear portion of accommodating cavity.
Wherein, the rear portion of accommodating cavity is provided with diffusing panel slot, and diffusing panel inserts diffusing panel slot.
Wherein, also comprise coaxial device, coaxial device is positioned at the front of shell, and coaxial device comprises spectroscope, and the light direction of spectroscope and scatter plate is miter angle.
Wherein, coaxial device also comprises anti-reflective glass and extinction plate, and extinction plate is parallel with scatter plate, and one end of anti-reflective glass is connected with one end of extinction plate, and the other end of anti-reflective glass is connected with spectroscopical one end, and the other end of extinction plate is connected with spectroscopical other end.
Wherein, the bottom of light emitting diode is provided with printed circuit board (PCB), and printed circuit board (PCB) is connected with the bottom of accommodating cavity.
Wherein, heat-conducting layer is provided with between printed circuit board (PCB) and the bottom of accommodating cavity.
Wherein, the both sides of accommodating cavity are fixed with baffle plate.
Wherein, the front end face of scatter plate is provided with light guiding film.
Wherein, shell be below provided with radiator.
Beneficial effect of the present invention: it comprises shell, light emitting diode, optically focused post, shell offers accommodating cavity, light emitting diode is arranged at the bottom of accommodating cavity, optically focused post is arranged at the front portion of accommodating cavity, Linear coaxial light source also comprises scatter plate, scatter plate is arranged at the front portion of accommodating cavity, and scatter plate is positioned at the front of optically focused post.Arrange scatter plate in the front of optically focused post, will form uniform light from the light of optically focused post injection through after scatter plate, the light uniformity that the present invention externally penetrates is better, stability is better.
Accompanying drawing explanation
Fig. 1 is the structural representation of invention.
Fig. 2 is the decomposing schematic representation of Fig. 1.
Fig. 3 is the first structural representation of the scatter plate of invention.
Fig. 4 is the second structural representation of the scatter plate of invention.
Fig. 5 is the third structural representation of the scatter plate of invention.
Fig. 1 to Fig. 5 comprises:
10--shell
11--light emitting diode
12--optically focused post
13--scatter plate
14--diffusing panel
15--spectroscope
16--anti-reflective glass
17--extinction plate
18--printed circuit board (PCB)
19--heat-conducting layer
20--light guiding film
21--radiator.
Detailed description of the invention
Embodiment 1.
See Fig. 1 to Fig. 5.The Linear coaxial light source of the present embodiment, comprise shell 10, light emitting diode (LED) 11, optically focused post 12, shell 10 offers accommodating cavity, light emitting diode 11 is arranged at the bottom of accommodating cavity, optically focused post 12 is arranged at the front portion of accommodating cavity, Linear coaxial light source also comprises scatter plate 13, and scatter plate 13 is arranged at the front portion of accommodating cavity, and scatter plate 13 is positioned at the front of optically focused post 12.Here, be " front " orientation with light direction.
The light that light emitting diode 11 sends, through the convergence of optically focused post 12, thus form linear light source, scatter plate 13 is set in the front of optically focused post 12, the light penetrated from optically focused post 12 will form uniform light through after scatter plate 13, and the light uniformity that the present invention externally penetrates is better, stability is better.This Linear coaxial light source provides illumination for line-scan digital camera, even if it is reflective very strong to detect target, the image that line-scan digital camera collects all there will not be local to leak lamp, dazzle lamp phenomenon, solves the uneven and style phenomenon of the local luminous inconsistent image caused.
Light emitting diode 11 is as light source, shell 10 is mainly used in heat radiation and fixing each parts, optically focused post 12 Main Function is optically focused, light is assembled into a line, scatter plate 13 Main Function is dispersed along light source line propagation direction by light, eliminate the light uniformity formed because of the optically focused of optically focused post 12 bad, finally cause centre or edge to occur various style and uneven defect.
In the present embodiment, scatter plate provides following three kinds of structures: as shown in Figure 3, the surface uniform of scatter plate is provided with arc-shaped protrusions, as shown in Figure 4, the surface uniform of scatter plate is provided with prismatic projection, as shown in Figure 5, the surface uniform of scatter plate is provided with arc low groove, and this several shape is One Dimension Periodic structure, uneven for local and style type hot spot can be got rid of, obtain Uniform Illumination.Certainly, the shape of scatter plate also other structure optional, such as triangular shaped periods shape, sinusoidal cycles shape etc.
In the present embodiment, also comprise coaxial device, coaxial device is positioned at the front of shell 10, and coaxial device comprises spectroscope 15, and spectroscope 15 is miter angle with the light direction of scatter plate 13.Spectroscope 15 is for being divided into transmittance and reflectance two parts by light, and this kind of the most efficient light splitting ratio of structure is 1:1.The light irradiating out from scatter plate is after mirror reflection, and the change of 90 degree occurs light, and this light can be applicable to the detection of smooth reflecting surface defect.
Coaxial device also comprises anti-reflective glass 16 and extinction plate 17, extinction plate 17 is parallel with scatter plate 13, one end of anti-reflective glass 16 is connected with one end of extinction plate 17, and the other end of anti-reflective glass 16 is connected with one end of spectroscope 15, and the other end of extinction plate 17 is connected with the other end of spectroscope 15.Anti-reflective glass 16 is reflective for reducing, and increase light transmittance, upper surface can be dust-proof, prevents dust from dropping on spectroscope 15.Extinction plate 17 for ABSORPTION AND SCATTERING plate 13 send by the light after spectroscope 15, strengthen result of use.
The bottom of light emitting diode 11 is provided with printed circuit board (PCB) (PCB) 18, and printed circuit board (PCB) 18 is connected with the bottom of accommodating cavity; Heat-conducting layer 19 is provided with between printed circuit board (PCB) 18 and the bottom of accommodating cavity.Printed circuit board (PCB) 18 is for welding and fixing light emitting diode 11, and can be light emitting diode 11 and provide power supply, heat-conducting layer 19 has Heat Conduction Material to make, and for heat conduction, the heat that printed circuit board (PCB) 18 can be made to produce is delivered to shell 10 better.
In the present embodiment, shell 10 is provided with radiator, and shell 10 is one-body molded with radiator.The both sides of accommodating cavity are fixed with baffle plate, can play the effect of protection light emitting diode 11, optically focused post 12, scatter plate 13.
The front portion of accommodating cavity is provided with scatter plate slot, and scatter plate 13 inserts scatter plate slot.The front portion of accommodating cavity is provided with optically focused post slot, and optically focused post 12 inserts optically focused post slot.By slot mode, be convenient to the handling of scatter plate 13, optically focused post 12 and accommodating cavity.
Embodiment 2.
See Fig. 1 Fig. 2.In the present embodiment, for improving the uniformity of light further, diffusing panel 14 can be increased on the basis of embodiment 1, diffusing panel 14 is arranged at the rear portion of accommodating cavity, between light emitting diode 11 and optically focused post 12, the light that light emitting diode 11 sends forms uniform light through after diffusing panel 14, thus improves light-out effect.Wherein, the rear portion of accommodating cavity is provided with diffusing panel slot, and diffusing panel 14 inserts diffusing panel slot; By slot mode, be convenient to the handling of diffusing panel 14 and accommodating cavity.
It should be noted that, diffusing panel 14 Main Function is that the light that light emitting diode 11 sends is converted to diffused light, increases uniformity; If the present invention does not use diffusing panel 14, then can obtain more high brightness, when uniformity is slightly poor; And for rough surface illumination, need more high brightness, can without diffusing panel 14.
In the present embodiment, the front end face of scatter plate 13 is provided with light guiding film 20.Light guiding film 20 is mainly used in filtering veiling glare, only by the light with light guiding film 20 vertical direction.Light guiding film 20 adds the collimation of light, when target is smooth surface and there is tiny flaw, arranges light guiding film 20 and can obtain better illuminating effect.
In the present embodiment, after shell 10, be provided with radiator 21.The Main Function of radiator 21 is heat radiations, can be set to heat sink; As the present invention uses the light emitting diode 11 of super brightness, then radiator 21 can increase radiator fan.
Other structure of the present embodiment is identical with embodiment 1, no longer repeats at this.
Above content is only preferred embodiment of the present invention, and for those of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, this description should not be construed as limitation of the present invention.
Claims (1)
1. a Linear coaxial light source, comprise shell, light emitting diode, optically focused post, shell offers accommodating cavity, light emitting diode is arranged at the bottom of accommodating cavity, optically focused post is arranged at the front portion of accommodating cavity, it is characterized in that: described Linear coaxial light source also comprises scatter plate, scatter plate is arranged at the front portion of accommodating cavity, and scatter plate is positioned at the front of optically focused post;
Also comprise coaxial device, coaxial device is positioned at the front of described shell, and coaxial device comprises spectroscope, and the light direction of spectroscope and described scatter plate is miter angle;
Described coaxial device also comprises anti-reflective glass and extinction plate, extinction plate is parallel with described scatter plate, one end of anti-reflective glass is connected with one end of extinction plate, and the other end of anti-reflective glass is connected with described spectroscopical one end, and the other end of extinction plate is connected with described spectroscopical other end.
2. a kind of Linear coaxial light source according to claim 1, is characterized in that: also comprise diffusing panel, and diffusing panel is arranged at the rear portion of accommodating cavity.
3. a kind of Linear coaxial light source according to claim 2, is characterized in that: the rear portion of described accommodating cavity is provided with diffusing panel slot, and diffusing panel inserts diffusing panel slot.
4. a kind of Linear coaxial light source according to claim 1, it is characterized in that: the bottom of described light emitting diode is provided with printed circuit board (PCB), printed circuit board (PCB) is connected with the bottom of described accommodating cavity.
5. a kind of Linear coaxial light source according to claim 4, is characterized in that: be provided with heat-conducting layer between the bottom of described printed circuit board (PCB) and described accommodating cavity.
6. a kind of Linear coaxial light source according to claim 1, is characterized in that: the both sides of described accommodating cavity are fixed with baffle plate.
7. a kind of Linear coaxial light source according to claim 1 to 6 any one, is characterized in that: the front end face of described scatter plate is provided with light guiding film.
8. a kind of Linear coaxial light source according to claim 1 to 6 any one, is characterized in that: be provided with radiator after described shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110331625.2A CN103090254B (en) | 2011-10-27 | 2011-10-27 | Linear coaxial light source |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110331625.2A CN103090254B (en) | 2011-10-27 | 2011-10-27 | Linear coaxial light source |
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| Publication Number | Publication Date |
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| CN103090254A CN103090254A (en) | 2013-05-08 |
| CN103090254B true CN103090254B (en) | 2015-07-01 |
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| CN201110331625.2A Active CN103090254B (en) | 2011-10-27 | 2011-10-27 | Linear coaxial light source |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016071971A (en) * | 2014-09-26 | 2016-05-09 | 有限会社シマテック | LED lighting device |
| CN105903687A (en) * | 2016-05-18 | 2016-08-31 | 布勒索特克斯光电设备（合肥）有限公司 | Optical system of color sorter |
| KR101897084B1 (en) * | 2016-12-26 | 2018-10-24 | 주식회사 미르기술 | Coaxial lighting device for inspection |
| CN107461631A (en) * | 2017-09-01 | 2017-12-12 | 苏州苏大维格光电科技股份有限公司 | A kind of portable illumination device and identifying system |
| CN107606541A (en) * | 2017-11-03 | 2018-01-19 | 江门市云达灯饰有限公司 | A kind of light cover of ground footlight |
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| CN202306089U (en) * | 2011-10-27 | 2012-07-04 | 东莞市奥普特自动化科技有限公司 | Linear coaxial light source |
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| DE19962779B4 (en) * | 1999-12-23 | 2009-06-25 | Byk-Gardner Gmbh | Device for the quantified determination of the quality of surfaces |
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| JP2002340815A (en) * | 2001-05-22 | 2002-11-27 | Dainippon Screen Mfg Co Ltd | Pattern inspection device |
| CN200972533Y (en) * | 2006-09-14 | 2007-11-07 | 东莞市奥普特自动化科技有限公司 | Coaxia light source device |
| JP2008116329A (en) * | 2006-11-06 | 2008-05-22 | Toppan Printing Co Ltd | Lighting method for line camera inspection projection, and lighting system |
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| CN103090254A (en) | 2013-05-08 |
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Address after: Changan Jin Jin Ha Community Industrial District of Henan city of Dongguan province Guangdong 523000 liters Road No. 8 Patentee after: Guangdong aopute Polytron Technologies Inc Address before: Changan Town, Guangdong city of Dongguan province 523000 highway 358 section Yifeng usha Dongguan aopute commercial building 4F Automation Technology Co. Ltd. Patentee before: Dongguan OPT Machine Vision Tech Co.,Ltd. |