CN103104822B - A kind of light source assembly - Google Patents
A kind of light source assembly Download PDFInfo
- Publication number
- CN103104822B CN103104822B CN201110360604.3A CN201110360604A CN103104822B CN 103104822 B CN103104822 B CN 103104822B CN 201110360604 A CN201110360604 A CN 201110360604A CN 103104822 B CN103104822 B CN 103104822B
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- China
- Prior art keywords
- light source
- luminescence chip
- guide plate
- light
- source assembly
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Abstract
A kind of light source assembly, comprise luminescence chip, light guide plate and light source shell, the pin that described luminescence chip connects external control circuit is the pin of printed circuit board, described light guide plate there is one by different length and width degree and the transversely arranged white ink combined of spacing, the painted black above of described light source shell, the two ends of described light source shell are all overlapped and are had described luminescence chip.This light source assembly volume is little, and intensity and the uniformity of light are better.
Description
Technical field
The present invention relates to a kind of light source assembly, more specifically relate to a kind of volume little, the intensity of light and the uniformity be light source assembly all preferably.
Background technology
When image sensor starts to scan, machine inner light source emits beam and illuminates scanned, produces the reverberation representing characteristics of image.For CIS, light source is very important, because the light that CCD/CMOS CIS is experienced, all come from CIS self, impure or colour cast and light source the uniformity of light source is inadequate, directly can have influence on scanning result, the brightness of light source can affect the speed of scanning not, and the volume of light source also can affect the volume of scanner.
Summary of the invention
For the deficiencies in the prior art, the present invention proposes a kind of volume little, the light source assembly that the intensity of light source and the uniformity are all ideal.
A kind of light source assembly, comprise luminescence chip, light guide plate and light source shell, the pin that described luminescence chip connects external control circuit is the pin of printed circuit board, described light guide plate there is one by different length and width degree and the transversely arranged white ink combined of spacing, the painted black above of described light source shell, the two ends of described light source shell are all overlapped and are had described luminescence chip.
Preferably, described luminescence chip uses photodiode as light source.
Preferably, the material of described light source shell is polycarbonate resin.
Preferably, described light guide plate plug is in described light source shell.
Luminescence chip of the present invention connects the pin of the employing printed circuit board of external control circuit, reduce the volume of light source, all luminescence chip is added at the two ends of light source shell, ensure the intensity of light, the uniformity of light is regulated by the long width spaces controlling ink, the light that light guide plate can send by the light source shell of black absorbs after returning via external reflection, reduces secondary reflection and reduces interference.
Accompanying drawing explanation
Fig. 1 is the front elevation of luminescence chip;
Fig. 2 is the side view of luminescence chip;
Fig. 3 is the top view of luminescence chip;
Fig. 4 is the front elevation of light guide plate;
Fig. 5 is the side view of light guide plate;
Fig. 6 is the top view of light guide plate;
Fig. 7 is the front elevation of light source shell;
Fig. 8 is the side view of light source shell;
Fig. 9 is the top view of light source shell;
Figure 10 is the front elevation of light source assembly;
Figure 11 is the side view of light source assembly;
Figure 12 is the top view of light source assembly.
Number in the figure: 1, luminescence chip; 2, light guide plate; 3, light source shell; 4, light source assembly.
Detailed description of the invention
Below with reference to accompanying drawing, the present invention is further illustrated.
As shown in figs. 10-12, the invention discloses a kind of light source assembly 4, comprise luminescence chip 1, light guide plate 2 and light source shell 3, the pin that luminescence chip 1 connects external control circuit is the pin of printed circuit board, light guide plate 2 there is one by different length and width degree and the transversely arranged white ink combined of spacing, the painted black above of light source shell 3, the two ends of light source shell 3 are all overlapped and are had luminescence chip 1.Luminescence chip 1 uses photodiode as light source, and light guide plate 2 is filled in described light source shell 3, and the material of light source shell 3 is polycarbonate resin.
As Figure 1-3, it is pin on printed circuit board that luminescence chip 1 connects outside pin, and can connect up in printed circuit board two sides, reduce the space shared by pin, width can reduce half, reduces the size of luminescence chip 1.As Figure 4-Figure 6, light guide plate 2 has one by different length and width degree and the transversely arranged white ink combined of spacing.What the luminescence chip 1 at light source shell 3 two ends sent is scattered light, light encounters white ink and can reflect when conducting in light guide plate 2, controlled the amount of reverberation by the ink of diverse location different in width, thus control the brightness of the light that each position of whole Zhi Guangyuan sends, make its uniformity close; And the width of ink can affect the intensity of light, if not inking, light after entering light guide plate the brightness of each position be inside different, so the effect of inking controls overall brightness, make the brightness of each position close.As Figure 7-9, black has been painted above light source shell 3, when practical application, in order to improve brightness, need to use two light sources, when light some light after by the reflection of scanning contribution of light source on one side can reflex to the light source on one side in addition, black can sponge these light, reduces the interference to this Zhi Guangyuan.Figure 10-12 is the structural representation of light source assembly 4, is filled in by light guide plate 2 in light source shell 3, then luminescence chip 1 is enclosed within the two ends of the light source shell 3 being plugged with light guide plate 2.All overlap at the two ends of light source shell 3 and have luminescence chip 1, improve the speed of scanning, when light guide plate 2 is filled in light source shell 3, the exiting surface allowing light guide plate design is exposed, and the light in other faces can not be dispersed out.
Luminescence chip 1 of the present invention connects the pin of the employing printed circuit board of external control circuit, control the volume of light source, all overlap at the two ends of light source shell 3 and have luminescence chip 1, ensure the intensity of light, thus ensure that sweep speed, regulated the uniformity of light by the long width spaces controlling ink, thus ensure that the effect of scanning, the light that light guide plate can send by the light source shell 3 of black absorbs after returning via external reflection, reduces secondary reflection and reduces interference.
Above-described is the preferred embodiment of the present invention, it should be pointed out that for the person of ordinary skill of the art, and without departing from the concept of the premise of the invention, make other distortion or improve, these all belong to protection scope of the present invention.
Claims (4)
1. a light source assembly, comprise luminescence chip, light guide plate and light source shell, it is characterized in that, the pin that described luminescence chip connects external control circuit is the pin of printed circuit board, described light guide plate there is one by different length and width degree and the transversely arranged white ink combined of spacing, the painted black above of described light source shell, the two ends of described light source shell are all overlapped and are had described luminescence chip, and described light source assembly is used for scanner.
2. a kind of light source assembly according to claim 1, is characterized in that, described luminescence chip uses photodiode as light source.
3. a kind of light source assembly according to claim 1, is characterized in that, the material of described light source shell is polycarbonate resin.
4. a kind of light source assembly according to claim 1, is characterized in that, described light guide plate plug is in described light source shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110360604.3A CN103104822B (en) | 2011-11-15 | 2011-11-15 | A kind of light source assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110360604.3A CN103104822B (en) | 2011-11-15 | 2011-11-15 | A kind of light source assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103104822A CN103104822A (en) | 2013-05-15 |
| CN103104822B true CN103104822B (en) | 2016-01-20 |
Family
ID=48312906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110360604.3A Active CN103104822B (en) | 2011-11-15 | 2011-11-15 | A kind of light source assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103104822B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1553259A (en) * | 2003-05-27 | 2004-12-08 | 明基电通股份有限公司 | Light negative module |
| CN2798233Y (en) * | 2005-06-02 | 2006-07-19 | 王军 | LED side back light source |
| CN201110928Y (en) * | 2007-11-02 | 2008-09-03 | 比亚迪股份有限公司 | Circuit board and back light source |
| CN101469844A (en) * | 2007-12-27 | 2009-07-01 | 富士迈半导体精密工业（上海）有限公司 | Illuminating apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201957136U (en) * | 2011-04-15 | 2011-08-31 | 威海华菱光电有限公司 | Contact type image sensor |
-
2011
- 2011-11-15 CN CN201110360604.3A patent/CN103104822B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1553259A (en) * | 2003-05-27 | 2004-12-08 | 明基电通股份有限公司 | Light negative module |
| CN2798233Y (en) * | 2005-06-02 | 2006-07-19 | 王军 | LED side back light source |
| CN201110928Y (en) * | 2007-11-02 | 2008-09-03 | 比亚迪股份有限公司 | Circuit board and back light source |
| CN101469844A (en) * | 2007-12-27 | 2009-07-01 | 富士迈半导体精密工业（上海）有限公司 | Illuminating apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103104822A (en) | 2013-05-15 |
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