CN101634429A - Light guide device and lighting device using same - Google Patents
Light guide device and lighting device using same Download PDFInfo
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- CN101634429A CN101634429A CN200810302881A CN200810302881A CN101634429A CN 101634429 A CN101634429 A CN 101634429A CN 200810302881 A CN200810302881 A CN 200810302881A CN 200810302881 A CN200810302881 A CN 200810302881A CN 101634429 A CN101634429 A CN 101634429A
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- reflecting surface
- guiding device
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- plane
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Abstract
The invention provides a light guide device, comprising an incidence surface, a reflecting surface and an outgoing surface. The incidence surface, the reflecting surface and the outgoing surface are connected end to end in proper order. The reflecting surface is a curved surface. The incidence surface comprises at least two inclined planes used for refracting incident light to the reflecting surface, a connecting surface is used for connecting each two inclined planes, and the area of the inclined plane is greater than that of the connecting surface. Viewed from the visual angle of the outgoing surface which points at the reflecting surface, at least two inclined planes tilt towards the interior of the light guide device. The light guide device is provided with at least two inclined planes tilting towards the interior of the light guide device on the incidence surface, and the reflecting surface is arranged to be the curved surface so as to enlarge the incidence angle of most light entering the reflecting surface, thus increasing reflecting light and improving light outgoing efficiency. The invention also provides a lighting device using the light guide device.
Description
Technical field
The present invention relates to the light-emitting device of a kind of guiding device and application thereof.
Background technology.
In some electronic products, often to use the leaded light post to control the light that light source sends.And in these leaded light posts, the normal direction of propagation of adopting the plastic lens of polishing to change light as speculum.But because the influence of factors such as material of plastics own and color makes that the reflectivity of speculum is not high, many luminous energy are absorbed, and therefore not only cause emitting brightness not high, but also can produce heating problem.
Summary of the invention
In view of this, be necessary to provide the light-emitting device of high guiding device of a kind of light extraction efficiency and application thereof.
A kind of guiding device, it comprises that one has the plane of incidence of broached-tooth design, a reflecting surface and an exit facet.The described plane of incidence, reflecting surface and exit facet are end to end successively.Described reflecting surface is a curved surface.The described plane of incidence comprises at least two inclined-planes that are used for incident ray is refracted to described reflecting surface, connect by a joint face between per two inclined-planes, and the area on described inclined-plane is greater than the area of described joint face.Point to the visual angle of described reflecting surface from described exit facet, described at least two inclined-planes are to described guiding device inner inclination.
A kind of light-emitting device, it comprises that at least one has light source and a guiding device.Described guiding device comprises that one has the plane of incidence of broached-tooth design, a reflecting surface and an exit facet.The described plane of incidence, reflecting surface and exit facet are end to end successively.Described reflecting surface is a curved surface.The described plane of incidence comprises at least two inclined-planes that are used for incident ray is refracted to described reflecting surface, connect by a joint face between per two inclined-planes, and the area on described inclined-plane is greater than the area of described joint face.Point to the visual angle of described reflecting surface from described exit facet, described at least two inclined-planes are to described guiding device inner inclination.Described light source is located at the side of the plane of incidence of described guiding device, is used for to described guiding device emission light.
The light-emitting device of described guiding device and application thereof is at least two inclined-planes to the guiding device inner inclination of described plane of incidence setting, and reflecting surface is set is curved surface, to improve the incidence angle that most of light enters described reflecting surface, thereby make the reverberation increase that reflexes to described exit facet from described reflecting surface, improved light extraction efficiency.
Description of drawings
The stereogram of the guiding device that Fig. 1 provides for first embodiment of the invention;
Fig. 2 is the side view of the guiding device among Fig. 1;
Fig. 3 is the working state schematic representation of the guiding device among Fig. 1;
The schematic diagram of the guiding device that Fig. 4 provides for second embodiment;
Fig. 5 is the light-emitting device schematic diagram of the guiding device in the application drawing 1.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
See also Fig. 1 to Fig. 3, the guiding device 1 that provides for first embodiment of the invention.The class triangular prism that this guiding device 1 is made for light transmissive material, it comprises the plane of incidence 10, a reflecting surface 12 and an exit facet 14.The described plane of incidence 10, reflecting surface 12 and exit facet 14 are end to end successively.
The described plane of incidence 10 is connected between described exit facet 14 and the reflecting surface 12, and with described exit facet 14 approximate vertical, and be an inclination angle with described reflecting surface 12.Be formed with broached-tooth design on the described plane of incidence 10, it comprises at least two inclined-planes that are used for incident ray is refracted to described reflecting surface 12.In the present embodiment, the described plane of incidence 10 comprises four inclined-planes 100,102,104,106.Connect by joint face 101,103,105 between described four inclined-planes 100,102,104,106, and the area on each inclined-plane is greater than the area of described joint face.Described visual angle from the described reflecting surface 12 of described exit facet 14 sensings, described four inclined-planes 100,102,104,106 are to described guiding device 1 inner inclination.These four inclined-planes 100,102,104,106 can make the incident ray of the incidence angle that becomes positive with it directly arrive the incidence angle of described reflecting surface 12 without refraction greater than this incident ray through its incidence angle that refracts to described reflecting surface 12.Described positive incidence angle is meant the incidence angle that incident ray had that is positioned at the interface normal left side.Otherwise, then be negative incidence angle.See also Fig. 3, the light L1 with the 104 one-tenth positive incidence angles in inclined-plane, it is 104 incidence angles that refract to described reflecting surface 12 through the inclined-plane? does 1 directly arrive the incidence angle of this reflecting surface 12 greater than it without refraction? 2.In the prior art, general with the plane of incidence setting of light source over against guiding device.When therefore using the guiding device 1 of the plane of incidence 10 with broached-tooth design, can make with respect to described four inclined-planes 100,102,104,106 and have the incident ray of positive incidence angle more than light with negative incidence angle, thereby make most of incident ray incidence angle to described reflecting surface 12 after these four inclined-planes, 100,102,104,106 refractions become big, increase catoptrical energy.Preferably, this broached-tooth design is Fresnel (Fresnel) structure.
Described reflecting surface 12 is obliquely installed with respect to the described plane of incidence 10 and exit facet 14, is used for being incident upon the light reflection on this reflecting surface 12 and penetrating from described exit facet 14.Preferably, described reflecting surface 12 is an arc-shaped curved surface, and its curvature is to make the light that refracts to this reflecting surface 12 from the described plane of incidence 10 have bigger incidence angle with respect to this reflecting surface 12, to increase reverberation.Can repeatedly change the curvature of this reflecting surface 12, and measure the amount of light of corresponding described exit facet 14, choose the final curvature of the amount of light of described exit facet 14 curvature when maximum as this reflecting surface 12.
Described exit facet 14 is a plane, penetrates via this exit facet 14 from the light of the described plane of incidence 10 and reflecting surface 12 incidents and reflection.Described exit facet 14 also can be a curved surface or other shape.
Resin, plastics, macromolecular material or glass that described guiding device 1 preferably adopts printing opacity and has a high index are made.
See also Fig. 4, the guiding device 2 that provides for second embodiment of the invention, the difference of the guiding device 1 that itself and first embodiment provide is that described exit facet 24 is provided with the cylinder 26 of a printing opacity, and the position that is not connected with described cylinder 26 on the described exit facet 24 scribbles shading layer 28.Enter the light of described guiding device 2 from the described plane of incidence 20, after the reflection of the refraction of this plane of incidence 20 and reflecting surface 22, penetrate from described cylinder 26.This cylinder 26 makes these guiding device 2 lighting areas bigger, and light direction is more, can play the effect of indicator lamp better.
See also Fig. 5, be the light-emitting device 3 of the guiding device 1 that utilizes Fig. 1, it comprises an above-mentioned guiding device 1 and at least one light source 4.
Described light source 4 is located at a side of the plane of incidence 10 of described guiding device 1, and these light source 4 emission light are to the plane of incidence 10 of described guiding device 1.This light source 4 can be light emitting diode.
The light that described light source 4 sends is by the plane of incidence 10 refractions of described guiding device 1, and wherein a part is refracted to described exit facet 14, and another part is refracted to described reflecting surface 12, and reflexes to described exit facet 14 by described reflecting surface 12.The light that this light source 4 sends finally penetrates from described exit facet 14.
The light-emitting device of described guiding device and application thereof is at least two inclined-planes to the guiding device inner inclination of described plane of incidence setting, and reflecting surface is set is curved surface, to improve the incidence angle that most of light enters described reflecting surface, thereby make the reverberation increase that reflexes to described exit facet from described reflecting surface, improved light extraction efficiency.
Be understandable that, for the person of ordinary skill of the art, can make other various corresponding changes and distortion by technical conceive according to the present invention, and all these change the protection domain that all should belong to claim of the present invention with distortion.
Claims (7)
1. guiding device, it comprises that one has the plane of incidence of broached-tooth design, a reflecting surface and an exit facet, is characterized in that the described plane of incidence, reflecting surface and exit facet are end to end successively; Described reflecting surface is a curved surface; The described plane of incidence comprises at least two inclined-planes that are used for incident ray is refracted to described reflecting surface, connect by a joint face between per two inclined-planes, and the area on described inclined-plane is greater than the area of described joint face, point to the visual angle of described reflecting surface from described exit facet, described at least two inclined-planes are to described guiding device inner inclination.
2. guiding device as claimed in claim 1 is characterized in that, described broached-tooth design is a Fresnel structure.
3. guiding device as claimed in claim 2 is characterized in that described exit facet is connected with the cylinder of a printing opacity.
4. guiding device as claimed in claim 3 is characterized in that, the position that is not connected with described cylinder on the described exit facet scribbles shading layer.
5. as any described guiding device in the claim 1 to 4, it is characterized in that described guiding device is a kind of the making in glass, resin, transparent plastic or the transparent polymer material.
6. light-emitting device, it comprises at least one light source, it is characterized in that, this light-emitting device also comprises a guiding device, described guiding device comprises that one has the plane of incidence of broached-tooth design, a reflecting surface and an exit facet, and the described plane of incidence, reflecting surface and exit facet are end to end successively; Described reflecting surface is a curved surface; The described plane of incidence comprises at least two inclined-planes that are used for incident ray is refracted to described reflecting surface, connect by a joint face between per two inclined-planes, and the area on described inclined-plane is greater than the area of described joint face, point to the visual angle of described reflecting surface from described exit facet, described at least two inclined-planes are to described guiding device inner inclination; Described light source is located at the side of the plane of incidence of described guiding device, is used for to described guiding device emission light.
7. light-emitting device as claimed in claim 6 is characterized in that, described light source is a light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810302881A CN101634429A (en) | 2008-07-22 | 2008-07-22 | Light guide device and lighting device using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810302881A CN101634429A (en) | 2008-07-22 | 2008-07-22 | Light guide device and lighting device using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101634429A true CN101634429A (en) | 2010-01-27 |
Family
ID=41593701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810302881A Pending CN101634429A (en) | 2008-07-22 | 2008-07-22 | Light guide device and lighting device using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101634429A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102455457A (en) * | 2010-10-18 | 2012-05-16 | 联胜（中国）科技有限公司 | Light guide pillar |
| CN102914812A (en) * | 2011-08-04 | 2013-02-06 | 冠捷投资有限公司 | Light guide plate and backlight module |
| CN106764810A (en) * | 2017-01-12 | 2017-05-31 | 上海小糸车灯有限公司 | A kind of transparent light guide body and its application with interception |
-
2008
- 2008-07-22 CN CN200810302881A patent/CN101634429A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102455457A (en) * | 2010-10-18 | 2012-05-16 | 联胜（中国）科技有限公司 | Light guide pillar |
| CN102455457B (en) * | 2010-10-18 | 2013-10-23 | 联胜（中国）科技有限公司 | Light guide pillar |
| CN102914812A (en) * | 2011-08-04 | 2013-02-06 | 冠捷投资有限公司 | Light guide plate and backlight module |
| CN106764810A (en) * | 2017-01-12 | 2017-05-31 | 上海小糸车灯有限公司 | A kind of transparent light guide body and its application with interception |
| CN106764810B (en) * | 2017-01-12 | 2022-11-29 | 华域视觉科技(上海)有限公司 | Transparent optical conductor with shading effect and application thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100127 |