CN102621618A - Light guide strip and light-emitting device - Google Patents
Light guide strip and light-emitting device Download PDFInfo
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- CN102621618A CN102621618A CN2011100297476A CN201110029747A CN102621618A CN 102621618 A CN102621618 A CN 102621618A CN 2011100297476 A CN2011100297476 A CN 2011100297476A CN 201110029747 A CN201110029747 A CN 201110029747A CN 102621618 A CN102621618 A CN 102621618A
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- light
- incidence surface
- main incidence
- sawtooth
- emitting device
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Abstract
The invention provides a light guide strip, comprising an upper surface and a light-out surface opposite to the upper surface, wherein the upper surface includes a main light-in surface, two inclined surfaces which form a relatively inclined connection with the main light-in surface, and two serrated surfaces which are connected with the two inclined surfaces respectively. The main light-in surface is a concave centrosymmetic curved surface, and each serrated surface is composed of a plurality of sawteeth which are arranged from central part outwards according to a geometric progression of the bottom width, with the common ratio of the geometric progression being q which is smaller than 1 and greater than 0, and the tooth-tips of the plurality of sawteeth are lower than the peak of the main light-in surface. The invention also provides a light-emitting device comprising such a light guide strip.
Description
Technical field
The present invention relates to leaded light bar and light-emitting device, relate in particular to the leaded light bar and the light-emitting device that are applicable to the small size light source.
Background technology
Generally speaking, be subject to process technique, the colour temperature and the brightness of the light that each light emitting diode sent in the same wholesale optical diode are not quite similar.When in the backlight module that is applied to display, the colour temperature of each light emitting diode or the difference of brightness will cause on the display picture problems such as bright dark space piece or irregular colour be even.The leaded light bar of so then need arranging in pairs or groups is regulated back incident LGP to outgoing light homogeneity.But in the key illumination district or pilot lamp when zone, only adopt single light emitting diode usually, and existing leaded light bar all can't satisfy the luminous uniformity coefficient demand of small size light source.
Summary of the invention
In view of this, provide a kind of leaded light bar of small size light source and light-emitting device of being applicable to be necessity in fact.
A kind of leaded light bar, it comprises a upper surface and one and the opposing exiting surface of this upper surface.This upper surface comprises a main incidence surface, two relative these main incidence surface inclination connection inclined, and two respectively with these two serrated faces that the inclined-plane links to each other; The center symmetroid that this main incidence surface is an indent; Each serrated face is formed by a plurality of sawtooth; The tooth bottom width degree of these a plurality of sawtooth is Geometric Sequence and outwards arranges from the center; And the common ratio of this geometric ratio ordered series of numbers is q, and q is less than 1 and greater than 0, and the crown of each these a plurality of sawtooth all is not higher than the peak of this main incidence surface.
A kind of light-emitting device, it comprises a pointolite and a leaded light bar, this leaded light bar comprises a upper surface and one and the opposing exiting surface of this upper surface.This upper surface comprises a main incidence surface, two relative these main incidence surface inclination connection inclined, and two respectively with these two serrated faces that the inclined-plane links to each other; The center symmetroid that this main incidence surface is an indent; Each serrated face is formed by a plurality of sawtooth; The tooth bottom width degree of these a plurality of sawtooth is Geometric Sequence outwards arranges from the center, and the common ratio of this geometric ratio ordered series of numbers is q, and q is less than 1 and greater than 0; This pointolite is over against this main incidence surface, and the crown of each these a plurality of sawtooth all is not higher than the peak of this main incidence surface.
With respect to prior art; Leaded light bar provided by the invention is fit to and the display pilot lamp; Small size light sources such as keyboard pilot lamp are used, and its serrated face that provides can improve outgoing light homogeneity, avoid the bright dipping zone to produce blackening; Light-emitting device provided by the invention is used in the occasion that needs the small size light source, and bright dipping is even.
Description of drawings
Fig. 1 is the perspective view of the leaded light bar that provides of the embodiment of the invention.
Fig. 2 is the light path synoptic diagram of the light-emitting device that provides of the embodiment of the invention.
The main element symbol description
Light-emitting device 100
Leaded light bar 20
Inclined-plane 222
Serrated face 224
Sawtooth 30
Exiting surface 24
Embodiment
Below will combine accompanying drawing that the present invention is done further explain.
See also Fig. 1 and Fig. 2, the light-emitting device 100 that the embodiment of the invention provides comprises a pointolite 10 and a leaded light bar 20.The light-emitting area of this pointolite 10 is less, and for example this pointolite 10 is merely one or two light emitting diodes.This leaded light bar 20 comprises a upper surface 22, and one with the opposing exiting surface 24 of this upper surface 22.In the present embodiment, these leaded light bar 20 length directions greater than or much larger than Width.
This upper surface 22 comprises the inclined-plane 222 that 220, two relative these main incidence surfaces 220 of a main incidence surface tilt, and two serrated faces 224 that link to each other with this inclined-plane 222.This pointolite 10 is over against this main incidence surface 220, that is, and and this main incidence surface 220 of the basic normal incidence of light that this pointolite 10 sends, and to inclined-plane 222, serrated face 224 basic oblique incidences.The area of this main incidence surface 220 is confirmed to the spacing at the center of this main incidence surface 220 according to light dispersion angle and this pointolite 10 of this pointolite 10.
The center symmetroid that this main incidence surface 220 is an indent.In the present embodiment, this main incidence surface 220 is the face of cylinder of an indent.In other embodiments, this main incidence surface 220 can also be the inner sunken face of other shape, for example parabola, sphere etc.These two inclined-planes 222 link to each other with 220 liang of opposed ends of this main incidence surface respectively, and extend laterally.These two inclined-planes 222 are about this main incidence surface 220 centers symmetry.
These two serrated faces 224 are about this main incidence surface 220 centers symmetry.
Each this serrated face 224 comprises a plurality of sawtooth 30, and each inclined-plane 222 connects is this main incidence surface 220 and near the sawtooth 30 of this main incidence surface 220.
In the present embodiment, the similar right-angle triangle in the cross section of each sawtooth 30, and right-angle side compares its hypotenuse more near the center of this leaded light bar 20, is the base that the hypotenuse end points is connected with the right-angle side end points at the bottom of the tooth.The crown of each sawtooth 30 is concordant with the peak of this main incidence surface 220 or be lower than this peak.
A plurality of sawtooth 30 of homonymy are one group, and in the sawtooth, the width at the bottom of each sawtooth 30 tooth is Geometric Sequence outwards arranges from the center on the same group, and the common ratio of this geometric ratio ordered series of numbers is q, and q is less than 1 and greater than 0, i.e. the edge laterally from the center, and sawtooth 30 is more and more littler.More and more littler sawtooth 30 helps increasing the reflection and the refraction of light, thereby makes light more even.For example, if the width at the bottom of the tooth of a sawtooth 30 is 1mm, q is 1/5, and the width at the bottom of the tooth of then adjacent with this sawtooth 30 second sawtooth that is positioned at its outside is 0.2mm, by that analogy.
The light that this pointolite 10 sends penetrates from this exiting surface 24.In the present embodiment, this exiting surface 24 is the plane, and emergent light is basically perpendicular to this exiting surface 24 outgoing.
Particularly, this pointolite 10 is a light emitting diode, near the tooth bottom width degree of the sawtooth 30 of this main incidence surface 220 be approximately equal to this light emitting diode exiting surface length q doubly.For example, be 1/5 to calculate with q, if the length of the exiting surface of this light emitting diode is 5mm, then this is 1mm near the width at the bottom of the tooth of the sawtooth 30 of this main incidence surface 220.
Because the light that it almost is normal direction that the main incidence surface 220 of this leaded light bar 20 receives only from this pointolite 10 basically; And residual ray is injected in the leaded light bar 20 through this inclined-plane 222 and this serrated face 224; Thereby after these group sawtooth 30 reflections, refraction; Emergent light becomes evenly, thereby has reached the purpose that improves small size light source luminescent uniformity coefficient.
The length of this leaded light bar 20 needn't be long.Preferably, this upper surface 22 along the fabric width of its length direction greater than or equal 2 times of fabric width of the angle of divergence of this pointolite 10 basically, to accept all light that this pointolite 10 sends as far as possible.
The light-emitting device 100 that present embodiment provides comprises a pair of pointolite 10 and leaded light bar 20, can also design as required manyly can link to each other between many leaded light bars 20 to pointolite 10 and leaded light bar 20, and is also separable.
Leaded light bar provided by the invention is fit to and the display pilot lamp; Small size light sources such as keyboard pilot lamp are used, and its serrated face that provides can improve outgoing light homogeneity, avoid the bright dipping zone to produce blackening; Light-emitting device provided by the invention is used in the occasion that needs the small size light source, and bright dipping is even.
It is understandable that those skilled in the art also can do other variation in spirit of the present invention, all should be included within the present invention's scope required for protection.
Claims (10)
1. leaded light bar, it comprises:
A upper surface comprises a main incidence surface, two relative these main incidence surface inclination connection inclined, and two respectively with these two serrated faces that the inclined-plane links to each other; The center symmetroid that this main incidence surface is an indent; Each serrated face is formed by a plurality of sawtooth; The tooth bottom width degree of these a plurality of sawtooth is Geometric Sequence and outwards arranges from the center; And the common ratio of this geometric ratio ordered series of numbers is q, and q is less than 1 and greater than 0, and the crown of each these a plurality of sawtooth all is not higher than the peak of this main incidence surface; And
One with the opposing exiting surface of this upper surface.
2. leaded light bar as claimed in claim 1 is characterized in that, these two inclined-planes link to each other with two of this main incidence surface relative ends respectively, and extends laterally.
3. leaded light bar as claimed in claim 1 is characterized in that, these two inclined-planes are about the center symmetry of this main incidence surface, and these two serrated faces are about the center symmetry of this main incidence surface.
4. leaded light bar as claimed in claim 1 is characterized in that, this exiting surface is the plane.
5. leaded light bar as claimed in claim 4 is characterized in that the light of this exiting surface outgoing is basically perpendicular to this exiting surface certainly.
6. light-emitting device, it comprises:
A pointolite;
A leaded light bar, it comprises:
A upper surface comprises a main incidence surface, two relative these main incidence surface inclination connection inclined, and two respectively with these two serrated faces that the inclined-plane links to each other; The center symmetroid that this main incidence surface is an indent; Each serrated face is formed by a plurality of sawtooth; The tooth bottom width degree of these a plurality of sawtooth is Geometric Sequence outwards arranges from the center, and the common ratio of this geometric ratio ordered series of numbers is q, and q is less than 1 and greater than 0; The crown of each these a plurality of sawtooth all is not higher than the peak of this main incidence surface, and this pointolite is over against this main incidence surface; And
One with the opposing exiting surface of this upper surface.
7. light-emitting device as claimed in claim 6 is characterized in that, this pointolite is a single light emitting diode, near the tooth bottom width degree of the sawtooth of this main incidence surface equal this light emitting diode exiting surface length q doubly.
8. light-emitting device as claimed in claim 6 is characterized in that, this upper surface is equal to or greater than 2 times of fabric width of the angle of divergence of this pointolite basically along the fabric width of its length direction.
9. light-emitting device as claimed in claim 6 is characterized in that, this light-emitting device comprises a plurality of pointolites and a plurality of leaded light bar, and these a plurality of pointolites are corresponding one by one with these a plurality of leaded light bars.
10. light-emitting device as claimed in claim 9 is characterized in that, is separated from each other between adjacent two leaded light bars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110029747.6A CN102621618B (en) | 2011-01-27 | 2011-01-27 | Light-strip and light-emitting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110029747.6A CN102621618B (en) | 2011-01-27 | 2011-01-27 | Light-strip and light-emitting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102621618A true CN102621618A (en) | 2012-08-01 |
| CN102621618B CN102621618B (en) | 2016-03-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110029747.6A Expired - Fee Related CN102621618B (en) | 2011-01-27 | 2011-01-27 | Light-strip and light-emitting device |
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| Country | Link |
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| CN (1) | CN102621618B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105805648A (en) * | 2016-04-27 | 2016-07-27 | 纳晶科技股份有限公司 | Light source module and lateral entrance type display device |
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| US4904069A (en) * | 1987-12-14 | 1990-02-27 | Ichikoh Industries, Ltd. | Fresnel-type aspheric prism lens |
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| CN1914674A (en) * | 2004-02-03 | 2007-02-14 | 旭硝子株式会社 | Liquid crystal lens element and optical head device |
| CN1918427A (en) * | 2003-12-22 | 2007-02-21 | 肖特股份公司 | Optical array comprising a fresnel lens |
| CN101359059A (en) * | 2007-08-01 | 2009-02-04 | Trw车辆电气与零件有限公司 | Optical sensing device and rainwater or optical sensor with the optical sensing device |
| US20100061106A1 (en) * | 2008-09-10 | 2010-03-11 | San-Woei Shyu | Plano-fresnel led lens and led assembly thereof |
| US20100097825A1 (en) * | 2008-10-17 | 2010-04-22 | Chao-Hung Weng | Light Guide Plate |
| CN101852875A (en) * | 2009-04-03 | 2010-10-06 | 鸿富锦精密工业（深圳）有限公司 | Fresnel lens |
| US20100296265A1 (en) * | 2009-05-25 | 2010-11-25 | Kim Eun Hwa | Illumination lens and illumination unit including the same |
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2011
- 2011-01-27 CN CN201110029747.6A patent/CN102621618B/en not_active Expired - Fee Related
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4904069A (en) * | 1987-12-14 | 1990-02-27 | Ichikoh Industries, Ltd. | Fresnel-type aspheric prism lens |
| US6275339B1 (en) * | 1998-03-25 | 2001-08-14 | CHAZALLET FRéDéRIC | Edge-lighted luminous device |
| CN1918427A (en) * | 2003-12-22 | 2007-02-21 | 肖特股份公司 | Optical array comprising a fresnel lens |
| CN1914674A (en) * | 2004-02-03 | 2007-02-14 | 旭硝子株式会社 | Liquid crystal lens element and optical head device |
| CN1760724A (en) * | 2004-10-14 | 2006-04-19 | 清华大学 | Board for guiding light and backlight module |
| CN101359059A (en) * | 2007-08-01 | 2009-02-04 | Trw车辆电气与零件有限公司 | Optical sensing device and rainwater or optical sensor with the optical sensing device |
| US20100061106A1 (en) * | 2008-09-10 | 2010-03-11 | San-Woei Shyu | Plano-fresnel led lens and led assembly thereof |
| TW201011349A (en) * | 2008-09-10 | 2010-03-16 | E Pin Optical Industry Co Ltd | Plano-Fresnel LED lens for angular distribution patterns and LED assembly thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105805648A (en) * | 2016-04-27 | 2016-07-27 | 纳晶科技股份有限公司 | Light source module and lateral entrance type display device |
| CN105805648B (en) * | 2016-04-27 | 2018-04-20 | 纳晶科技股份有限公司 | Light source module group and side entering type display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102621618B (en) | 2016-03-09 |
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Effective date of registration: 20170630 Address after: 2, 1 floor second card, No. ten, 6 street, Nanhua East Road, lotus pond town, Pengjiang District, Guangdong, Jiangmen, China 529095 Patentee after: JIANGMEN PUSHENG TECHNOLOGY CO.,LTD. Address before: 312365 Zhejiang Province, Shaoxing city Shangyu District Songxia Town City Station International Plaza building 36 unit room 1-101 Patentee before: ZHEJIANG HONGSHENG TECHNOLOGY TRANSFER SERVICES CO.,LTD. Effective date of registration: 20170630 Address after: Zhejiang province Shaoxing city Shangyu District Songxia Town City Station International Plaza building 36 unit room 1-101 Patentee after: ZHEJIANG HONGSHENG TECHNOLOGY TRANSFER SERVICES CO.,LTD. Address before: 518109 Guangdong city of Shenzhen province Baoan District Longhua Town Industrial Zone tabulaeformis tenth East Ring Road No. 2 two Co-patentee before: HON HAI PRECISION INDUSTRY Co.,Ltd. Patentee before: HONG FU JIN PRECISION INDUSTRY (SHENZHEN) Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160309 Termination date: 20200127 |
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| CF01 | Termination of patent right due to non-payment of annual fee |