CN101055907A - Luminescence module - Google Patents
Luminescence module Download PDFInfo
- Publication number
- CN101055907A CN101055907A CNA2006100735802A CN200610073580A CN101055907A CN 101055907 A CN101055907 A CN 101055907A CN A2006100735802 A CNA2006100735802 A CN A2006100735802A CN 200610073580 A CN200610073580 A CN 200610073580A CN 101055907 A CN101055907 A CN 101055907A
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- Prior art keywords
- light
- emitting module
- shield layer
- lens
- reflecting surface
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Abstract
A light emitting module has a center axis. The light emitting module comprises a light source, a lens as well as a light shield layer. In which, the light source is suitable for providing light, while the lens are dispoesd above the light source. The lens have a light incidence surface, a full-reflection surface as well as a side light-emitting surface. The light incidence surface is located at the top of the light source, while the full-reflection surface is located at the top of the light incidence surface, and the side light-emitting surface connects the light incidence surface with the full-reflection surface. The light enters the lens from the light incidence surface, while the full-reflection may reflect the light entering in the lens, and makes the light jetting out from the light-emitting surface of the lens side. Additionally, the light shield layer is disposed at the partial full-reflection surface. The light emitting module of the invention may dispose the light shield layer at the partial full-reflection surface, therefore avoiding the light from jetting out of the lens, and then allowing the light emitting module to have good lumious effect in the side direction.
Description
[technical field]
The invention relates to a kind of light emitting module (light emitting module), and particularly relevant for the light emitting module of a kind of side bright dipping (side-edged light-emitting).
[prior art]
Please refer to Fig. 1, the light emitting module 100 of known lateral direction light emission type comprises a light-emitting diode (Light Emitting Diodes, LED) chip (chip) 110 and lens 120, wherein lens 120 have a light entrance face 122, a fully reflecting surface 124 and a side exiting surface 126.As shown in Figure 1, the fully reflecting surface 124 of lens 120 is positioned at light entrance face 122 tops, and the light entrance face 122 contiguous light-emitting diode chip for backlight unit 110 of lens 120, and side exiting surface 126 connects fully reflecting surface 124 and light entrance face 122.
In above-mentioned light emitting module 100, light-emitting diode chip for backlight unit 110 is suitable for providing a light 112, and light 112 can enter lens 120 from light entrance face 122.As shown in Figure 1, the fully reflecting surface 124 of lens 120 has special curvature design, to reflect the light 112 that light-emitting diode chip for backlight unit 110 is provided.Under the perfect condition, the part light 112 that enters lens 120 can be reflected by fully reflecting surface 124, and from 126 outgoing of side exiting surface; 112 of all the other light that enter lens 120 can not reflected by fully reflecting surface 124 and directly from 126 outgoing of side exiting surface.In addition, because the side exiting surface 126 of lens 120 has special curvature design, therefore, the light path direction of light 112 after lens 120 outgoing is haply perpendicular to central shaft 50, to reach the purpose of side direction bright dipping.
Yet, since lens 120 when actual fabrication easily because the careless mistake of processing procedure (as the making error of jetting mold, abrasion, lens by scratch etc.), and on the fully reflecting surface 124 of lens 120, form the light leak district.General common light leak district is the demoulding angle place (as A place) of position at lens 120, or because encapsulation LED chip or assembling during light emitting module, the mechanical axis of encapsulation or assembling base is not easy to overlap consistent with the optical axis of lens, what have displacement (shift) phenomenon, and result in the light leak district that the subregion (as the B place) on the fully reflecting surface 124 forms.The light leak district can cause the light 112 of part to be reflected effectively, and then influences the effect of light emitting module 100 side direction bright dippings.Generally speaking, the light emitting module of side direction bright dipping has 10%～15% light to go out light loss approximately, 10%～15% light is just arranged not from the side bright dipping and directly from light source top bright dipping, therefore, how to promote the side light extraction efficiency of the light emitting module of lateral direction light emission type, be problem demanding prompt solution.
[summary of the invention]
The purpose of this invention is to provide a kind of side direction and go out the better light emitting module of light effect.
For reaching above-mentioned purpose, the present invention proposes a kind of light emitting module, has a central shaft, it is characterized in that: this light emitting module comprises:
One light source provides a light;
One lens, be disposed at this light source top, these lens have a light entrance face, that is positioned at this light source top and are positioned at the fully reflecting surface of this light entrance face top and the side exiting surface of this light entrance face of connection and this fully reflecting surface, wherein this light enters these lens from this light entrance face, this fully reflecting surface reflection enters this light in these lens, and makes this light leave this lens from this side exiting surface; And
One light shield layer is disposed to this fully reflecting surface of small part.
Therefore light emitting module of the present invention can be avoided light to penetrate outside lens from fully reflecting surface, and then make light emitting module have good lateral direction light emission effect in dispose light shield layer to the fully reflecting surface of small part.
For above and other objects of the present invention, feature and advantage can be become apparent, an embodiment cited below particularly, and cooperate appended graphicly, be described in detail below.
[description of drawings]
Fig. 1 is the structural representation of the light emitting module of known lateral direction light emission type.
Fig. 2 is the schematic diagram of the light emitting module of first embodiment of the invention.
Fig. 3 is the schematic diagram of the light emitting module of second embodiment of the invention.
Fig. 4 is the schematic diagram of the light emitting module of third embodiment of the invention.
Fig. 5 is the schematic diagram of the light emitting module of fourth embodiment of the invention.
[embodiment]
First embodiment
Please refer to Fig. 2, the light emitting module 200 of first embodiment of the invention has a central shaft C1, and light emitting module 200 comprises a light source 210, lens 220 and a light shield layer 230.As shown in Figure 2, light source 210 is suitable for providing light 212, and lens 220 are disposed at the top of light source 210, and wherein lens 220 have light entrance face 222, fully reflecting surface 224 and side exiting surface 226.Light entrance face 222 is positioned at the top of light source 210, and fully reflecting surface 224 is positioned at the top of light entrance face 222, and side exiting surface 226 connects light entrance face 222 and fully reflecting surface 224.Light 212 is suitable for entering the lens 220 from light entrance face 222, and fully reflecting surface 224 is suitable for reflecting the light 212 that enters in the lens 220, and light 212 is penetrated from the side exiting surface 226 of lens 220.Wherein, light shield layer 230 is disposed to the fully reflecting surface 224 of small part, and the zone of configuration is the light leak district on the fully reflecting surface 224.Since lens 220 when actual fabrication easily because the careless mistake of processing procedure (as the making error of jetting mold, abrasion, lens by scratch etc.), and on the fully reflecting surface 224 of lens 220, form the light leak district, general common light leak district is the demoulding angle place of position at lens 220, as the bottom of V-type fully reflecting surface 224 among Fig. 2.
Hold above-mentionedly, light source 210 is a light-emitting diode chip for backlight unit, and this light-emitting diode chip for backlight unit has a luminous main shaft C2.In the present embodiment, luminous main shaft C2 overlaps with the central shaft C1 of light emitting module 200.In addition, be disposed at the light shield layer 230 on the fully reflecting surface 224, its allocation position is corresponding to light source 210, as shown in Figure 2, light shield layer 230 be positioned at light source 210 directly over, and light shield layer 230 is disposed at the light leak district on the fully reflecting surface 224, and its area of containing can be slightly larger than, equals or be slightly less than the light-emitting area of light source 210.In the present embodiment, light shield layer 230 is reflection layers of meeting reflection ray, it can be to utilize the method for coating (evaporation or sputter) to be formed on the fully reflecting surface 224, particularly, the material of light shield layer 230 comprises metal as silver, aluminium, chromium, polymeric membrane, or light screening material that can reflection ray.
When light source 210 is shinny when light 212 is provided, the light 212 that light source 210 is provided can enter lens 220 from light entrance face 222, the part light 212 that enters lens 220 can be passed to fully reflecting surface 224, and from 226 outgoing of side exiting surface, all the other light 212 that enter lens 220 then can not reflected by fully reflecting surface 224 and directly from 226 outgoing of side exiting surface by fully reflecting surface 224 reflection back.Because light entrance face 222, fully reflecting surface 224 and the side exiting surface 226 of lens 220 all have special curvature design, so these light paths from the light 212 of side exiting surface 226 outgoing haply can be perpendicular to the central shaft C1 of light emitting module 200.Present embodiment is made light shield layer 230 on the part fully reflecting surface 224 of lens 220, and this light shield layer 230 directly penetrates from fully reflecting surface 224 except avoiding light 212, also can strengthen the effect of fully reflecting surface 224 reflecting part light 212, and then promote the effect of light emitting module 200 lateral direction light emissions.
In addition, in order to protect light shield layer 230, can on light shield layer 230, dispose a protective layer 240, and the material of this protective layer 240 for example is silica gel (Silicone) or epoxy resin (Epoxy).Therefore, light emitting module 200 is being assembled in the assembling process of other device, protective layer 240 can be protected light shield layer 230, avoids light shield layer 230 to be damaged because of contacting with other assembly.Perhaps, present embodiment also can form one deck polymeric membrane between light shield layer 230 and protective layer 240, to strengthen the reflecting effect of fully reflecting surface 224.
In sum, because lens 220 are easily because the careless mistakes of processing procedure (as the making error of jetting mold, abrasion, lens by scratch etc.) and form the light leak district on fully reflecting surface 224, and the light leak district can make the side direction bright dipping deleterious of light emitting module 200.So present embodiment is made light shield layer 230 on fully reflecting surface 224, penetrate from fully reflecting surface 224 to avoid light 212, and then to make light 212 all be that side exiting surface 226 from lens 220 penetrates.Compare with known, light emitting module 200 of the present invention has better side direction and goes out light effect.
Second embodiment
Please refer to Fig. 3, the light emitting module of second embodiment of the invention is similar to the light emitting module of first embodiment, the two main difference be in: the light shield layer 230 ' in the light emitting module 200 ' of present embodiment comprises a center light shield layer 232 and an outside light shield layer 234.
As shown in Figure 3, the center light shield layer 232 of the light shield layer 230 ' of present embodiment is to be positioned on the fully reflecting surface 224 of light source 210 tops, and outside light shield layer 234 also is to be positioned on the fully reflecting surface 224, but outside light shield layer 234 is around center light shield layer 232.Wherein, center light shield layer 232 is to be arranged at the light leak district that lens 220 form on fully reflecting surface 224 because of the processing procedure careless mistake.The light leak district that outside light shield layer 234 is caused when being arranged at zone system on the fully reflecting surface 224 at encapsulation LED or assembling light emitting module, this light leak district be because mechanical axis and the optical axis of light emitting module of encapsulation or assembling base to be not easy coincidence consistent, what have displacement (shift) phenomenon to cause.
When the light 212 of a part is passed to fully reflecting surface 224, the center light shield layer 232 of light shield layer 230 ' and outside light shield layer 234 can avoid light 212 to penetrate from the specific region (light leak district) of fully reflecting surface 224, strengthen the effect of fully reflecting surface 224 reflection rays 212 simultaneously.Therefore, light emitting module 200 ' can have better side direction and goes out light effect.Hold above-mentionedly, center light shield layer 232 and outside light shield layer 234 are covered by area size and the shape on the fully reflecting surface 224, and the configuration quantity of outside light shield layer 234, can be adjusted according to actual processing procedure and design requirement.
The 3rd embodiment
Please refer to Fig. 4, the light emitting module of third embodiment of the invention is similar to the light emitting module of first and second embodiment, but different being in the light emitting module 200 of present embodiment " in light shield layer 230 ", cover fully reflecting surface 224 fully.
As shown in Figure 4, because the light shield layer 230 of present embodiment " cover fully reflecting surface 224 fully, so do not have the light leak district on the fully reflecting surface 224.In addition, light shield layer 230 " material be metal or light screening material that can reflection ray, therefore cover the light shield layer 230 of fully reflecting surface 224 fully " can increase the effect of fully reflecting surface 224 reflection rays 212.When the light 212 of part was passed to fully reflecting surface 224, fully reflecting surface 224 can reflect all and be passed to the part light 212 of fully reflecting surface 224, and light 212 can't be penetrated from the specific region of fully reflecting surface 224.Light 212 can penetrate from side exiting surface 226 after being reflected by fully reflecting surface 224.Compared to known, light 212 enter lens 220 after, all be to penetrate, so the light emitting module 200 of present embodiment from side exiting surface 226 " have good side direction and go out light effect.In addition, cover the light shield layer 230 of fully reflecting surface 224 fully ", comparatively convenient on actual fabrication.
The 4th embodiment
Please refer to Fig. 5, fourth embodiment of the invention is similar to second embodiment, but different being in: the light shield layer 330 ' in the light emitting module 300 of present embodiment for can light-absorbing light absorbing zone.
As shown in Figure 5, light shield layer 330 ' is disposed on the fully reflecting surface 224.In the present embodiment, light shield layer 330 ' comprises center light absorbed layer 332 and exterior light absorbed layer 334, wherein the position of center light absorbed layer 332 is corresponding to light source 210, and the area contained of center light absorbed layer 332 can be slightly larger than, equals or be slightly less than the light-emitting area of light source 210.334 of exterior light absorbed layers are around light absorbing zone 332.Owing to light absorbing zone 332 and 334 can absorb light, so script can be by center light absorbed layer 332 and 334 absorptions of exterior light absorbed layer from the light 212 of the light leak district outgoing of fully reflecting surface 224.Compared to known, in the light emitting module 300 of present embodiment, light 212 all is from 226 outgoing of side exiting surface, do not have light 212 from fully reflecting surface 224 penetrate lens outside, so the light emitting module 300 of present embodiment has good side direction and goes out light effect.
Hold above-mentioned, though the light shield layer 330 ' of the light emitting module 300 of present embodiment comprises center light absorbed layer 332 and exterior light absorbed layer 334, center light absorbed layer 332 is provided with separately or common the setting with the demand of the visual lens 220 of configuration of exterior light absorbed layer 334 is indivedual.That is to say that the present invention does not limit the quantity and the allocation position thereof of the light absorbing zone in the light emitting module 300, but light absorbing zone must be configured in the light leak district on the fully reflecting surface 224, to avoid light 212 from fully reflecting surface 224 outgoing.
In sum, light emitting module of the present invention is to dispose light shield layer on fully reflecting surface, goes out light effect so that light emitting module has good side direction.When light shield layer was reflection layer, light shield layer can help fully reflecting surface to reflect the light that all are passed to fully reflecting surface, and the light that all are passed in the lens all is to be penetrated by the side exiting surface.Therefore, light can not go out light effect so light emitting module has good side direction from directly penetrating outside lens from fully reflecting surface.See through and on fully reflecting surface, dispose light shield layer, make the assembly error of the higher lens foozle of light emitting module tolerable of the present invention, encapsulation LED or assembling light emitting module.
In addition, when light shield layer was light absorbing zone, light absorbing zone can absorb from the light of the light leak district outgoing of fully reflecting surface, and light can not penetrated outside lens from fully reflecting surface.Therefore, light all is the side exiting surface ejaculation from lens, goes out light effect so light emitting module has good side direction.
Though the present invention discloses as above with an embodiment, so it is not in order to limiting the present invention, anyly has the knack of this skill person, and when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking claims person of defining.
[primary clustering symbol description]
50: central shaft
100,200,300: light emitting module
110,210: light source
112,212: light
120,220: lens
122,222: light entrance face
124,224: fully reflecting surface
126,226: the side exiting surface
230,230 ', 230 ", 330: light shield layer
232: the center light shield layer
234: outside light shield layer
332: central absorbent layer
334: outer absorbent layer
240: protective layer
C1: central shaft
C2: luminous main shaft
A, B: light leak district
Claims (10)
1. a light emitting module has a central shaft, it is characterized in that: this light emitting module comprises:
One light source provides a light;
One lens, be disposed at this light source top, these lens have a light entrance face, that is positioned at this light source top and are positioned at the fully reflecting surface of this light entrance face top and the side exiting surface of this light entrance face of connection and this fully reflecting surface, wherein this light enters these lens from this light entrance face, this fully reflecting surface reflection enters this light in these lens, and makes this light leave this lens from this side exiting surface; And
One light shield layer is disposed to this fully reflecting surface of small part.
2. light emitting module as claimed in claim 1 is characterized in that: this light source is a light-emitting diode chip for backlight unit.
3. light emitting module as claimed in claim 1 is characterized in that: this light-emitting diode chip for backlight unit has a luminous main shaft, and this luminous main shaft overlaps with the central shaft of this light emitting module.
4. light emitting module as claimed in claim 1 is characterized in that: this light shield layer comprises a light absorbing zone.
5. light emitting module as claimed in claim 1 is characterized in that: this light shield layer comprises a reflection layer.
6. light emitting module as claimed in claim 1 is characterized in that: this light shield layer is positioned on this fully reflecting surface directly over this light source.
7. light emitting module as claimed in claim 1 is characterized in that: this light shield layer comprises:
One center light shield layer is positioned on this fully reflecting surface of this light source top; And
One outside light shield layer is positioned on this fully reflecting surface, and around this center light shield layer.
8. light emitting module as claimed in claim 1 is characterized in that: this light shield layer covers on this fully reflecting surface fully.
9. light emitting module as claimed in claim 1 is characterized in that: the material of this light shield layer comprises metal or polymeric membrane.
10. light emitting module as claimed in claim 1 is characterized in that: more comprise a protective layer, be disposed on this light shield layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100735802A CN100456505C (en) | 2006-04-10 | 2006-04-10 | Luminescence module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100735802A CN100456505C (en) | 2006-04-10 | 2006-04-10 | Luminescence module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101055907A true CN101055907A (en) | 2007-10-17 |
| CN100456505C CN100456505C (en) | 2009-01-28 |
Family
ID=38795624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100735802A Expired - Fee Related CN100456505C (en) | 2006-04-10 | 2006-04-10 | Luminescence module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100456505C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011142060A (en) * | 2010-01-08 | 2011-07-21 | Sharp Corp | Led bulb |
| CN102235594A (en) * | 2010-05-04 | 2011-11-09 | 艾迪光电（杭州）有限公司 | Light-emitting diode (LED) light-emitting module |
| CN102537838A (en) * | 2010-12-28 | 2012-07-04 | 泰金宝电通股份有限公司 | Optical lens module and luminous device thereof |
| CN104170101B (en) * | 2012-04-12 | 2018-02-09 | 美国圣戈班性能塑料公司 | The method for manufacturing light-emitting device |
| CN113195969A (en) * | 2018-12-21 | 2021-07-30 | Zkw集团有限责任公司 | Lighting device for a motor vehicle headlight and motor vehicle headlight |
| CN113900343A (en) * | 2021-10-19 | 2022-01-07 | 马瑞利汽车零部件(芜湖)有限公司 | Large-angle vehicle body projection optical system |
| CN115542610A (en) * | 2022-10-26 | 2022-12-30 | 南通惟怡新材料科技有限公司 | Side light-emitting quantum dot lens, backlight module and quantum dot lens manufacturing method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4753520A (en) * | 1986-11-17 | 1988-06-28 | General Instrument Corp. | Compound catoptric cartesian ovoid lens |
| CN1259732C (en) * | 2000-09-29 | 2006-06-14 | 欧姆龙株式会社 | Optical device for optical element and equipment using the same |
| US6679621B2 (en) * | 2002-06-24 | 2004-01-20 | Lumileds Lighting U.S., Llc | Side emitting LED and lens |
| KR100586965B1 (en) * | 2004-05-27 | 2006-06-08 | 삼성전기주식회사 | Light emitting diode device |
| TWI249257B (en) * | 2004-09-24 | 2006-02-11 | Epistar Corp | Illumination apparatus |
-
2006
- 2006-04-10 CN CNB2006100735802A patent/CN100456505C/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011142060A (en) * | 2010-01-08 | 2011-07-21 | Sharp Corp | Led bulb |
| US8342719B2 (en) | 2010-01-08 | 2013-01-01 | Sharp Kabushiki Kaisha | LED light bulb |
| CN102235594A (en) * | 2010-05-04 | 2011-11-09 | 艾迪光电（杭州）有限公司 | Light-emitting diode (LED) light-emitting module |
| CN102537838A (en) * | 2010-12-28 | 2012-07-04 | 泰金宝电通股份有限公司 | Optical lens module and luminous device thereof |
| CN102537838B (en) * | 2010-12-28 | 2013-07-31 | 泰金宝电通股份有限公司 | Optical lens module and luminous device thereof |
| CN104170101B (en) * | 2012-04-12 | 2018-02-09 | 美国圣戈班性能塑料公司 | The method for manufacturing light-emitting device |
| CN113195969A (en) * | 2018-12-21 | 2021-07-30 | Zkw集团有限责任公司 | Lighting device for a motor vehicle headlight and motor vehicle headlight |
| CN113195969B (en) * | 2018-12-21 | 2024-02-27 | Zkw集团有限责任公司 | Lighting device for a motor vehicle headlight and motor vehicle headlight |
| CN113900343A (en) * | 2021-10-19 | 2022-01-07 | 马瑞利汽车零部件(芜湖)有限公司 | Large-angle vehicle body projection optical system |
| CN113900343B (en) * | 2021-10-19 | 2023-10-27 | 马瑞利汽车零部件(芜湖)有限公司 | Large-angle car body projection optical system |
| CN115542610A (en) * | 2022-10-26 | 2022-12-30 | 南通惟怡新材料科技有限公司 | Side light-emitting quantum dot lens, backlight module and quantum dot lens manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100456505C (en) | 2009-01-28 |
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Effective date of registration: 20090116 Address after: Hsinchu City, Taiwan, China Patentee after: YOUNG Lighting Technology Inc Address before: Miaoli County, Taiwan, China Patentee before: Zhongqiang Photoelectric Co., Ltd. |
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Owner name: YANGSHENG ILLUMINATION CO., LTD. Free format text: FORMER OWNER: ZHONGQIANG PHOTOELECTRIC CO. LTD. Effective date: 20090116 |
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Granted publication date: 20090128 Termination date: 20140410 |