CN102466836A - Light guide device and light source module - Google Patents
Light guide device and light source module Download PDFInfo
- Publication number
- CN102466836A CN102466836A CN2010105372708A CN201010537270A CN102466836A CN 102466836 A CN102466836 A CN 102466836A CN 2010105372708 A CN2010105372708 A CN 2010105372708A CN 201010537270 A CN201010537270 A CN 201010537270A CN 102466836 A CN102466836 A CN 102466836A
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- guiding device
- leaded light
- joint face
- light
- light post
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Abstract
The invention provides a light guide device and a light source module. The light guide device comprises a light guide post. The light guide post has an incident surface, an emergent surface, two connecting surfaces and a bottom surface, wherein the incident surface is positioned on the end part of the light guide post; the emergent surface, the connecting surfaces and the bottom surface are connected to the incident surface respectively; the emergent surface and the bottom surface are positioned on the two opposite sides of each connecting surface, and are opposite to each other to define an emergent direction which points to the emergent surface from the bottom surface; the area of the emergent surface is larger than that of the bottom surface; and the variation trend of the sectional area of the light guide post along the emergent direction comprises gradual increasing, and the sectional area is parallel to the emergent surface or the bottom surface.
Description
Technical field
The present invention relates to a kind of guiding device and light source module, relate in particular to and a kind of pointolite is converted to the guiding device of linear light sorurce and has the light source module of this guiding device.
Background technology
General LCD, its display medium is non-self luminous liquid crystal molecule.So LCD mainly is to be that a liquid crystal panel and a backlight module constitute, wherein backlight module is in order to provide this liquid crystal panel required area source, so that LCD reaches the effect of demonstration.Often little, the power consumption of applying volume less in backlight module, bright dipping directive property is good and luminescence efficiency is high light emitting diode is as light source.Yet the LED source of spot distribution possibly cause the uneven phenomenon of distribution of light sources, and the use of a plurality of LED sources also is unfavorable for the reduction of cost.
Summary of the invention
The present invention provides a kind of guiding device and light source module, can convert linear light sorurce into minimizing pointolite requirement with putting light, and have desirable light utilization ratio.
The present invention provides a kind of guiding device, comprises a leaded light post.The leaded light post has an incidence surface, an exiting surface, a joint face and a bottom surface.Incidence surface is positioned at the end of leaded light post.Exiting surface, joint face and bottom surface are connected in incidence surface severally, and exiting surface and bottom surface then are positioned at the relative both sides of joint face.Exiting surface and bottom surface are against each other defining a light direction that is pointed to exiting surface by the bottom surface, and the area of exiting surface is greater than the area of bottom surface.The sectional area that the leaded light post is parallel to exiting surface or bottom surface comprises cumulative along the variation tendency of light direction.
The present invention provides a kind of light source module, comprises light-guide device provided by the invention; And at least one pointolite, establish towards this incidence surface.
Based on above-mentioned, utilize the leaded light post in the guiding device of the present invention to convert the point source of light in the light source module into linear light sorurce.The leaded light post has opposed bottom surface and exiting surface to provide towards the luminous linear light sorurce of specific light direction.The sectional area of leaded light post increases gradually along light direction and helps to improve the light source utilization ratio.
For letting the above-mentioned feature and advantage of the present invention can be more obviously understandable, hereinafter is special lifts embodiment, and cooperates appended graphic elaborating as follows.
Description of drawings
Fig. 1 is applied to the synoptic diagram of a light supply apparatus for the guiding device of first embodiment of the invention.
Fig. 2 is the guiding device of the second embodiment of the present invention.
Fig. 3 A and Fig. 3 B are respectively the leaded light post and the base of a kind of guiding device of third embodiment of the invention.
Fig. 4 A and Fig. 4 B are respectively the leaded light post and the base of the another kind of guiding device of third embodiment of the invention.
Reference numeral:
10: light source module; 20: light source;
30: LGP; 100,200,300: guiding device;
110,210,310,410: the leaded light post; 112,212,312,412: incidence surface;
114,214,314,414: exiting surface; 116,216,316,416: joint face;
118,218,318,418: the bottom surface; 130,230,330,430: base;
132,232,332,432: containing groove; 150: the reflection horizon;
216A: inclination joint face; 216B: horizontal connecting surface;
232A: rake; 232B, 432C: horizontal part;
316A, 416A: the first inclination joint face; 316B, 416B: the second inclination joint face;
332A, 432A: first rake; 332B, 432B: second rake;
D: light direction; I: first partly;
II: second partly; R: angle;
W1, W2: width; 416C: smooth joint face.
Embodiment
Fig. 1 is applied to the synoptic diagram of a light supply apparatus for the guiding device of first embodiment of the invention.Please with reference to Fig. 1, light source module 10 comprises a guiding device 100, light source 20 and a LGP 30.LGP 30 and light source 20 lay respectively at the not homonymy of guiding device 100, and light source 20 is a point source of light for example, similarly is LED source.Light that light source 20 is sent is through can be exchanged into linear light sorurce being incident in the LGP 30 after the effect of guiding device 100, and LGP 30 can convert linear light sorurce into area source for utilization further.In one embodiment, light source module 10 is asked to optionally not dispose LGP 30 so that linear light sorurce to be provided.
In addition, base 130 can also adopt reflective material, and for example white resin, and this moment can be omitted in guiding device 100 by reflection horizon 150.
Leaded light post 110 has an incidence surface 112, an exiting surface 114, two joint faces 116 and a bottom surface 118.Incidence surface 112 is positioned at the end of leaded light post 110.Exiting surface 114, joint face 116 are connected in incidence surface 112 severally with bottom surface 118, and exiting surface 114 and 118 of bottom surfaces are positioned at the relative both sides of each joint face 116.In addition, the angle R between each joint face 116 and the bottom surface 118 can be a wedge angle or a lead angle.That is to say that the distance that two joint faces are 116 increases along light direction D gradually.In light source module 10, light source 20 is established towards incidence surface 112, and 30 of LGPs are configured in exiting surface 114 sides of leaded light post 110.Two joint faces 116 of leaded light post 110 against each other.Following content will only illustrate with one of them joint face 116, all can have the described aspect of following content but those of skill in the art should be appreciated that the design of two joint faces 116.
It is a light direction D that leaded light post 110 points to exiting surface 114 directions; And exiting surface 114 is two parallel surfaces with bottom surface 118; And leaded light post 110 longitudinal cross-sections are long-pending to be a ladder type shape; Its short base is 118 places, bottom surface, one side for leaded light post 110, and long base is exiting surface 114 places one side of leaded light post 110.When exiting surface 114 is provided with perpendicular to surface level; Can press from both sides an angle between joint face 116 and the surface level; For example from 2 degree to 20 degree, its angle can be 92 to spend to 110 degree when just angle R was wedge angle, and angle R when being lead angle its radius-of-curvature can be 0.1mm to 3mm.
The light that light source 20 sent is got into by incidence surface 112 and will receive the guiding of leaded light post 110 behind the leaded light posts 110 and change linear light sorurce into, and is parallel to light direction D and penetrates leaded light post 110 and get in the LGP 30.Therefore, being designed with of leaded light post 110 helps improve the light utilization ratio, and according to analog result, the leaded light post 110 with joint face 116 of inclination aspect can increase about 29% with respect to the design of cylindric leaded light post on light extraction efficiency.
What deserves to be mentioned is that when the power of light source 20 was enough, light source module 10 only needs one (being arranged on an end of leaded light post 110) or two (being separately positioned on the two ends of leaded light post 110) light sources 20 just can provide a display panel required line source.Therefore, compared to the existing design of using the point source of light array, design of the present invention can be saved the light source use amount and reduced cost.
Fig. 2 is the guiding device of the second embodiment of the present invention.Please with reference to Fig. 2, its guiding device 200 roughly guiding device with Fig. 1 is close, wherein also comprises a leaded light post 210 and a base 230.Leaded light post 210 has an incidence surface 212, an exiting surface 214, relative two joint faces 216 (only indicating among the figure) and a bottom surface 218.
Wherein, when the exiting surface of leaded light post 210 214 was provided with perpendicular to surface level, each joint face 216 comprised and surface level intersects an inclination joint face 216A of an angle and a horizontal connecting surface 216B parallel with surface level.That is to say that the distance that two joint faces are 216 increases earlier along light direction D gradually to be kept necessarily again.
Inclination joint face 216A and surface level intersect 2 degree to 20 degree, and make irradiate light behind inclination joint face 216A, can penetrate leaded light post 210 along light direction D, use making the light utilization ratio promote.In addition, horizontal connecting surface 216B provides a smooth surface that leaded light post 210 comparatively firmly is provided with in the base 230, and leaded light post 210 is not easy to receive gravity and from base 230 landings, helps to improve the reliability of guiding device 200.Certainly, containing groove 232 also has rake 232A and the horizontal part 232B corresponding to inclination joint face 216A and horizontal connecting surface 216B.
In addition, Fig. 3 A and Fig. 3 B are respectively the leaded light post and the base of a kind of guiding device of third embodiment of the invention.Please be simultaneously with reference to Fig. 3 A and Fig. 3 B, the leaded light post 310 roughly leaded light post with Fig. 1 is close, wherein also has an incidence surface 312, an exiting surface 314, relative two joint faces 316 (only indicating one of them among the figure) and a bottom surface 318.Incidence surface 312 is positioned at the end of leaded light post 310.
Wherein, Each joint face 316 of leaded light post 310 is a stepped joint face; It comprises at least one first inclination joint face 316A and at least one second inclination joint face 316B, and one first inclination joint face 316A is connected in one second inclination joint face 316B and can constitutes single order.That is to say that the distance that two joint faces are 316 comprises earlier that along the variation tendency of light direction D increase gradually reduces gradually again.
In detail, exiting surface 314 vertical level and when being provided with, the first inclination joint face 316A and second inclination joint face 316B system tilt towards different directions, wherein the angle of cut of the first inclination joint face 316A and surface level can be 2 to spend to 20 and spend.In other words, leaded light post 310 can comprise sectional area along the cumulative at least one U of first of light direction D and sectional area along light direction D at least one second portion II decrescence.I of first and second portion II alternately arrange and constitute stepped joint face, and stepped joint face is the first inclination joint face 316A at the I of first, and are the second inclination joint face 316B at second portion II.In the present embodiment, when watching leaded light post 310 by incidence surface 312, the width W I of the first inclination joint face 316A is greater than the width W 2 at the second inclination joint face 316B.
Certainly, the base 330 of Fig. 3 B can be along the first inclination joint face 316A and the second inclination joint face 316B and is provided with the first rake 332A and the second rake 332B.The first rake 332A and the second rake 332B of different vergence directions can provide structural snap effect, and so that leaded light post 310 is fixed in the containing groove 332, guiding device 300 has good reliability.
Fig. 4 A and Fig. 4 B are respectively the leaded light post and the base of the another kind of guiding device of third embodiment of the invention.Please be simultaneously with reference to Fig. 4 A and Fig. 4 B, the leaded light post 410 roughly leaded light post with Fig. 3 A is close, wherein also has an incidence surface 412, an exiting surface 414, relative two joint faces 416 (only indicating) and a bottom surface 418.
Wherein, Each joint face 416 comprises at least one first inclination joint face 416A, at least one second inclination joint face 416B and a smooth joint face 416C; And the width by the smooth joint face 416C of vertical section of leaded light post 410 can be greater than the width of the first inclination joint face 416A; And the width of the first inclination joint face 416A can be greater than the width of the second inclination joint face 416B, but the invention is not restricted to this.
The first inclination joint face 416A and the second inclination joint face 416B for example tilt towards different directions.Exiting surface 414 vertical level and when being provided with, the angle of cut of the first inclination joint face 416A and surface level can be that 2 degree are to 20 degree.In addition, smooth joint face 416C then is parallel to surface level in fact.Certainly, in the present embodiment, the containing groove 432 of base 430 also comprises at least one first rake 432A, at least one second rake 432B and a horizontal part 432C along with joint face 416.The first rake 432A, the second rake 432B and horizontal part 432C are complying with the first inclination joint face 416A, the second inclination joint face 416B and smooth joint face 416C and are being provided with.That is to say that the distance that two joint faces are 416 comprises gradually along the variation tendency of light direction D to be increased, reduce gradually and keep certain three kinds of situations.
All to present the minute surface symmetrical structure each other with two relative joint faces be that example is explained to the leaded light post in the foregoing description.But, with the different designs demand, two relative joint faces can not present the minute surface symmetrical structure each other.In addition, the sectional area of leaded light post does not limit yet and must earlier cumulatively keep necessarily again along the variation tendency of light direction, or elder generation is cumulative more decrescence.In one embodiment, the sectional area of leaded light post along the variation tendency of light direction can be keep earlier necessarily, then cumulative, more then decrescence, cumulative etc. again.Or, the sectional area of leaded light post along the variation tendency of light direction can be keep earlier necessarily, then cumulative, more then keep certain.
In sum, guiding device of the present invention comprises a leaded light post, and wherein the leaded light post can be in order to convert pointolite into linear light sorurce.In leaded light post of the present invention, incidence surface system is arranged on the end, and establish relatively exiting surface and bottom surface.And exiting surface is arranged at surface level when vertical, is connected in folder one angle between joint face and the surface level between exiting surface and the bottom surface.So that the irradiate light in the leaded light post can penetrate the leaded light post and reach desirable light utilization ratio behind joint face towards required light direction.
Though the present invention discloses as above with embodiment; Right its is not that any person of ordinary skill in the field is not breaking away from the spirit and scope of the present invention in order to qualification the present invention; When doing a little change and retouching, so protection scope of the present invention is when being as the criterion with what claim defined.
Claims (10)
1. a guiding device is characterized in that, comprises a leaded light post; And this leaded light post has an incidence surface, an exiting surface, two joint faces and a bottom surface; This incidence surface is positioned at the end of this leaded light post, and this exiting surface, those joint faces and this bottom surface are connected in this incidence surface severally, and this exiting surface and this bottom surface then are positioned at the respectively relative both sides of this joint face; This exiting surface and this bottom surface are against each other; To define the direction of pointing to this exiting surface by this bottom surface is a light direction, and the area of this exiting surface is greater than the area of this bottom surface, and the distance between two joint faces comprises cumulative along the variation tendency of this light direction.
2. guiding device according to claim 1 is characterized in that, wherein the distance between two joint faces more comprises decrescence along the variation tendency of this light direction, and respectively this joint face is a stepped joint face.
3. guiding device according to claim 2; It is characterized in that; Wherein this leaded light post comprise distance between two joint faces along the cumulative at least one first of this light direction and the distance between two joint faces along this light direction at least one second portion decrescence; This first and this second portion are alternately arranged and are constituted this stepped joint face, and this stepped joint face at a width of this first greater than a width at this second portion.
4. guiding device according to claim 1 is characterized in that, wherein two joint faces are respectively done for oneself and are parallel to a horizontal connecting surface of this light direction.
5. guiding device according to claim 1; It is characterized in that; More comprise a base, this base has a containing groove with ccontaining this leaded light post, and this leaded light post is when being positioned over this containing groove; This bottom surface and those joint faces are coated by this base, and this incidence surface and this exiting surface are exposed out.
6. guiding device according to claim 5 is characterized in that, wherein the shape of this containing groove is conformal in this leaded light post.
7. guiding device according to claim 5 is characterized in that the external form that wherein this base constituted is a rectangle.
8. guiding device according to claim 1 is characterized in that, more comprises a reflection horizon, is configured on this bottom surface.
9. a light source module is characterized in that, comprising:
The described guiding device of claim 1; And
At least one pointolite is established towards this incidence surface.
10. light source module according to claim 9 is characterized in that, more comprises a LGP, is configured in by this exiting surface of this leaded light post.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105372708A CN102466836A (en) | 2010-11-08 | 2010-11-08 | Light guide device and light source module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105372708A CN102466836A (en) | 2010-11-08 | 2010-11-08 | Light guide device and light source module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102466836A true CN102466836A (en) | 2012-05-23 |
Family
ID=46070720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105372708A Pending CN102466836A (en) | 2010-11-08 | 2010-11-08 | Light guide device and light source module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102466836A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014067189A1 (en) * | 2012-11-02 | 2014-05-08 | 深圳市华星光电技术有限公司 | Backlight module and display device |
| CN103912823A (en) * | 2013-01-03 | 2014-07-09 | 三星显示有限公司 | Backlight assembly and a display device using the same |
| CN105759337A (en) * | 2015-01-05 | 2016-07-13 | 弘胜光电股份有限公司 | Scanning system and light guide strip thereof |
| WO2019214218A1 (en) * | 2018-05-08 | 2019-11-14 | 深圳市绎立锐光科技开发有限公司 | Light source and illumination device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040252480A1 (en) * | 2003-06-10 | 2004-12-16 | Toppoly Optoelectronics Corp. | Structure of illumination apparatus |
| TW200725106A (en) * | 2005-12-23 | 2007-07-01 | Innolux Display Corp | Liquid crystal display device |
| CN101832517A (en) * | 2009-03-13 | 2010-09-15 | 鸿富锦精密工业（深圳）有限公司 | Back light module |
-
2010
- 2010-11-08 CN CN2010105372708A patent/CN102466836A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040252480A1 (en) * | 2003-06-10 | 2004-12-16 | Toppoly Optoelectronics Corp. | Structure of illumination apparatus |
| TW200725106A (en) * | 2005-12-23 | 2007-07-01 | Innolux Display Corp | Liquid crystal display device |
| CN101832517A (en) * | 2009-03-13 | 2010-09-15 | 鸿富锦精密工业（深圳）有限公司 | Back light module |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014067189A1 (en) * | 2012-11-02 | 2014-05-08 | 深圳市华星光电技术有限公司 | Backlight module and display device |
| CN103912823A (en) * | 2013-01-03 | 2014-07-09 | 三星显示有限公司 | Backlight assembly and a display device using the same |
| CN105759337A (en) * | 2015-01-05 | 2016-07-13 | 弘胜光电股份有限公司 | Scanning system and light guide strip thereof |
| WO2019214218A1 (en) * | 2018-05-08 | 2019-11-14 | 深圳市绎立锐光科技开发有限公司 | Light source and illumination device |
| CN110454688A (en) * | 2018-05-08 | 2019-11-15 | 深圳市绎立锐光科技开发有限公司 | Light source and lighting device |
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Application publication date: 20120523 |