CN206757247U - A kind of high backing structure of efficiency of light energy utilization - Google Patents
A kind of high backing structure of efficiency of light energy utilization Download PDFInfo
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- CN206757247U CN206757247U CN201720169834.4U CN201720169834U CN206757247U CN 206757247 U CN206757247 U CN 206757247U CN 201720169834 U CN201720169834 U CN 201720169834U CN 206757247 U CN206757247 U CN 206757247U
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- light
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- energy utilization
- backing structure
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Abstract
Backlight technology field, more particularly to the backing structure that a kind of efficiency of light energy utilization is high, including light source and light tunnel are the utility model is related to, the smooth tunnel is in hollow polygonal pyramid mesa-shaped；Two parallel end faces are through setting on the polygonal pyramid platform, and the less end face of area is incidence surface, and another described end face is exiting surface；The reflection cavity that can be totally reflected to light is formed in the polygonal pyramid platform；The light source is at the incidence surface, and the light of the light source is towards the reflection cavity；The Fresnel Lenses parallel with the exiting surface is provided with the exiting surface.Goal of the invention of the present utility model is to provide a kind of efficiency of light energy utilization high backing structure, the light distribution angle of the backing structure can be reduced using technical scheme provided by the utility model, and improve the uniformity of backlight illumination to a certain extent, the efficiency of light energy utilization is improved, reduces system power dissipation.
Description
Technical field
It the utility model is related to backlight technology field, more particularly to the backing structure that a kind of efficiency of light energy utilization is high.
Background technology
TFT-LCD is the english abbreviation of Thin Film Transistor-LCD, is a kind of microelectric technique and liquid crystal display
Combination technology.Light tunnel (optical wand) can be used to carry out even light to backlight in TFT-LCD backlighting schemes.
The light path outlet of light tunnel and entrance, the even preferable ratio of light effect are 1：1, such smooth tunnel only has even light for light path
Effect, and light distribution angle can not be optimized.
HUD belongs to the optical system of small field of view requirement, and the visible angle of image is simply in very little angular range, therefore need
Want light distribution angle smaller, above-mentioned 1：For the light tunnel of 1 ratio because light shooting angle is big, light utilization efficiency is low, can not optimize HUD's
LED light distribution angles, cause HUD to need to improve LED driving power, bring the technical problems such as power consumption and radiating.
Utility model content
Goal of the invention of the present utility model is to provide a kind of efficiency of light energy utilization high backing structure, using the utility model
The technical scheme of offer solves the technical problem that existing smooth tunnel light distribution angle can not meet HUD systems.
In order to solve the above-mentioned technical problem, the utility model provides a kind of efficiency of light energy utilization high backing structure, including light
Source and light tunnel, the smooth tunnel are in hollow polygonal pyramid mesa-shaped；Two parallel end faces are through setting, area on the polygonal pyramid platform
The less end face is incidence surface, and another described end face is exiting surface；Being formed in the polygonal pyramid platform can be to light
The reflection cavity of total reflection；The light source is at the incidence surface, and the light of the light source is towards the reflection cavity；Described
The Fresnel Lenses parallel with the exiting surface is provided with exiting surface.
Preferably, the reflection cavity is in pyramid shape mesa-shaped, and the incidence surface and exiting surface are rectangle.
Preferably, the distance between the incidence surface and exiting surface are 30-60mm；The width of the incidence surface is 2-4mm,
Length is 3-8mm；The width of the exiting surface is 14-22mm, length 25-41mm.
Preferably, the light source is the LED of 1 or 1*2 arranged distributions.
Therefore using the technical scheme of the utility model embodiment, have the advantages that：The utility model is in light
Fresnel Lenses is added at the exiting surface of tunnel, the light distribution angle of the backing structure can be reduced, and is improved to a certain extent
The uniformity of backlight illumination, the efficiency of light energy utilization is improved, reduce system power dissipation；And light entrance end size is have compressed, is increased export
End and arrival end ratio, further reduce light distribution angle, and then further improve the efficiency of light energy utilization.
Brief description of the drawings
, below will be to this practicality in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
The required accompanying drawing used is briefly described in new embodiment or description of the prior art.Drawings in the following description are only
Part of the embodiment of the present utility model, for those of ordinary skill in the art, do not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the present embodiment light tunnel stereogram；
Fig. 2 is the present embodiment sectional view；
Fig. 3 is the present embodiment use state light schematic diagram.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
It is explicitly described.
Because light shooting angle is big, light utilization efficiency is low, can not optimize HUD's for light tunnel in existing backing structure technology
LED light distribution angles, cause HUD to need to improve LED driving power, bring the technical problems such as power consumption and radiating.
Fig. 1-3 are referred to, in order to solve the above-mentioned technical problem, it is necessary to reduce the light distribution angle of light tunnel.The present embodiment discloses
A kind of high backing structure of efficiency of light energy utilization, the backing structure include light source 10 and light tunnel 20.Wherein light tunnel 20 is in hollow
Polygonal pyramid mesa-shaped.Two parallel end faces are through setting on polygonal pyramid platform, and the less end face of area is incidence surface 21, another end
Face is exiting surface 22.
The reflection cavity 23 that can be totally reflected to light is formed in polygonal pyramid platform.The inner surface of reflection cavity 23 is by minute surface
The metal or dielectric reflective layer of processing, its making material is unlimited, in order to realize the function of the total reflection of reflection cavity 23, can use warp
Cross the metal of glossing or scribble the non-reflective material of dielectric reflective layer.Such material is extremely common on optics industry, and
Technique is simultaneously uncomplicated, has the advantages of inexpensive.
Light source 10 is at the incidence surface 21, and the light of light source 10 is towards reflection cavity 23.The incident light that light source 10 is sent enters
Enter after carrying out being totally reflected for several times in reflection cavity 23, projected from exiting surface 22.
In order to reach the technique effect for reducing light tunnel light distribution angle, the phenanthrene parallel with exiting surface 22 is provided with exiting surface 22
Nie Er lens 30, the light distribution angle for the light that exiting surface 22 projects obtain obvious optimization by Fresnel Lenses 30, and due to
Multiple, the uniform generation of reflex, the emergent light obtained have excellent uniformity, can reduce matching somebody with somebody for the backing structure
Angular, and improve the uniformity of backlight illumination to a certain extent, the efficiency of light energy utilization is improved, reduces system power dissipation.
The shape of the backing structure that the present embodiment provides, its light tunnel 20 and reflection cavity 23 can be according to the shape of LCD
It is customized, is learnt according to optical geometrical principle, the side number of the frustum of reflection cavity 23 is unlimited, can play above-mentioned optimization light
The effect with wide-angle, illumination curve in source.In order to make being applied to HUD systems, the reflection cavity 23 that the present embodiment provides is in four ribs
Taper mesa-shaped, incidence surface 21 and exiting surface 22 are rectangle.The wherein width of incidence surface 21 is 2-4mm, length 3-8mm, compared with
Existing smooth tunnel technology in incidence surface, further have compressed the size at light entrance end.The width of exiting surface 22 is 14-
22mm, length 25-41mm, suitably can just it be adjusted according to TFT-LCD effective dimensions.
Because reflection cavity 23 is longer, the order of reflection of light wherein is more, the illumination of the emergent light obtained it is uniform
Property is higher, and in the ideal case, if the indefinite extension of reflection cavity 23, the illuminance uniformity of emergent light can reach 100%.It is suitable
Answer the incidence surface 21 and exiting surface 22 of above-mentioned size, its length can according to the ratio between incidence surface 21 and exiting surface 22 come
It is fixed, while HUD systems need to be applied to, the distance between incidence surface 21 and exiting surface 22 are 30-60mm, i.e. reflection cavity 23 length
Scope is between 30~60mm.
Because incidence surface 21 is smaller, light source 10 can be arranged according to the size of incidence surface 21, be arranged for example with 2*2
Row, 2*3 arrangements, 3*3 arrangements, 3*4 arrangements or the LED of 3*5 arrangements, in the present embodiment, because the size of incidence surface 21 limits
System, light source 10 is then using 1 or the LED of 1*2 arranged distributions.
As shown in Fig. 2 reflection cavity 23 surrounds pyramid shape mesa-shaped by four trapezoidal reflectings surface, in the reality of HUD systems
In assembling, one of reflecting surface is vertical with incidence surface 21 and exiting surface 22, i.e., light tunnel entrance and exit is not necessarily on center
Symmetrically, by being biased to entrance and exit, it is possible to achieve the biasing of light propagation angle, so as to more be with imaging neatly
System coupling.
Further, light disperser 40 can also be set up at exiting surface 22, the light disperser 40 can be diffusion
Film or diffusion sheet, area is bigger, and the uniformity is more by that after light disperser 40, can obtain for the light projected from light tunnel
It is good, the more stable emergent light of colourity.Can be according to HUD imaging optical paths it needs to be determined that the angle of light disperser 40 so that backlight
Chief ray angle is consistent with the chief ray angle of imaging moiety, can further lift light efficiency, increases system brightness, so as to reach
To the purpose for reducing system power dissipation.
The backing structure that the present embodiment provides have compressed light entrance end size, increase export end and arrival end ratio, enter one
Step reduces light distribution angle, and then further improves the efficiency of light energy utilization.
Embodiments described above, the restriction to the technical scheme protection domain is not formed.It is any in above-mentioned implementation
Modifications, equivalent substitutions and improvements made within the spirit and principle of mode etc., should be included in the protection model of the technical scheme
Within enclosing.
Claims (4)
1. a kind of high backing structure of efficiency of light energy utilization, including light source and light tunnel, it is characterised in that：The smooth tunnel is in hollow more
Pyramid mesa-shaped；Through setting, the less end face of area is incidence surface, another for two parallel end faces on the polygonal pyramid platform
The individual end face is exiting surface；The reflection cavity that can be totally reflected to light is formed in the polygonal pyramid platform；The light source is located at
At the incidence surface, and the light of the light source is towards the reflection cavity；It is provided with the exiting surface and is put down with the exiting surface
Capable Fresnel Lenses.
A kind of 2. high backing structure of efficiency of light energy utilization according to claim 1, it is characterised in that：The reflection cavity is in four
Pyramid mesa-shaped, the incidence surface and exiting surface are rectangle.
A kind of 3. high backing structure of efficiency of light energy utilization according to claim 2, it is characterised in that：The incidence surface is with going out
The distance between smooth surface is 30-60mm；The width of the incidence surface is 2-4mm, length 3-8mm；The width of the exiting surface
For 14-22mm, length 25-41mm.
A kind of 4. high backing structure of efficiency of light energy utilization according to claim 3, it is characterised in that：The light source is 1
Or the LED of 1*2 arranged distributions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720169834.4U CN206757247U (en) | 2017-02-23 | 2017-02-23 | A kind of high backing structure of efficiency of light energy utilization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720169834.4U CN206757247U (en) | 2017-02-23 | 2017-02-23 | A kind of high backing structure of efficiency of light energy utilization |
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| Publication Number | Publication Date |
|---|---|
| CN206757247U true CN206757247U (en) | 2017-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720169834.4U Active CN206757247U (en) | 2017-02-23 | 2017-02-23 | A kind of high backing structure of efficiency of light energy utilization |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106773323A (en) * | 2017-02-23 | 2017-05-31 | 惠州市华阳多媒体电子有限公司 | A kind of efficiency of light energy utilization backing structure high |
| CN111379980A (en) * | 2020-04-20 | 2020-07-07 | 上海和宗焊接设备制造有限公司 | Light guide and light condensation structure for surface mount LED |
-
2017
- 2017-02-23 CN CN201720169834.4U patent/CN206757247U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106773323A (en) * | 2017-02-23 | 2017-05-31 | 惠州市华阳多媒体电子有限公司 | A kind of efficiency of light energy utilization backing structure high |
| CN111379980A (en) * | 2020-04-20 | 2020-07-07 | 上海和宗焊接设备制造有限公司 | Light guide and light condensation structure for surface mount LED |
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