CN203084225U - Light diffusion plate - Google Patents
Light diffusion plate Download PDFInfo
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- CN203084225U CN203084225U CN2013201161088U CN201320116108U CN203084225U CN 203084225 U CN203084225 U CN 203084225U CN 2013201161088 U CN2013201161088 U CN 2013201161088U CN 201320116108 U CN201320116108 U CN 201320116108U CN 203084225 U CN203084225 U CN 203084225U
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- light diffusion
- light
- diffusion layer
- diffusing sheet
- light diffusing
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Abstract
The utility model relates to a light diffusion plate capable of modulating optics. The light diffusion plate comprises a transparent organic plate and a first light diffusion layer which is attached on any one flat plate-shaped side surface of the transparent organic plate and has uniform thickness; and a second light diffusion layer which is locally thickened and is used for improving local fog level is attached on the transparent organic plate or the first light diffusion layer. The light diffusion plate has a very good dodging effect, meanwhile the light transmission rate of the light diffusion plate is above 10 percent higher compared with that of existing light diffusion plates with the same light diffusion effect.
Description
Technical field
The utility model relates to a kind of light diffusing sheet, particularly a kind of light diffusing sheet of modulated optical.
Background technology
Light diffusing sheet claims even tabula rasa again, expands tabula rasa, have high light diffusing, high transmission rate and can block feature such as light source well, and, be LED illumination and the important parts in flat pannel display field.Light diffusing sheet can play the effect of shading, can stop passing through of light, and generally speaking, the light diffusing of light diffusing sheet is good more, and transmittance is low more.The light diffusing sheet in LED illumination at present and flat pannel display field mainly is divided into two kinds of straight-down negative and side entering types by light inlet mode different, than side entering type, straight-down negative has more significantly price advantage because light guide plate has been saved in the centre, but just determined also to expect that homonymy goes into the same optical effect of formula, must reach well even light effect by the light diffusing of distance between increase light source and the diffuser plate or increase light diffusing sheet, so not only the volume of LED lighting or display seems heavy, practicality is restricted, light intensity also can die down simultaneously, and transmittance descends.
The light diffusing sheet of using at present mainly is by add light diffusing agent (having the light diffusion particle) in base materials such as PC/PMMA/PS, become the unit plate body of preset thickness by hot-extrudable straight forming, again by the later stage frosted, modes such as coextrusion obtain, also there is some producers employing printing leaded light point on the basis of PS diffuser plate when producing straight-down negative LED-TV diffuser plate to carry out leaded light and even optical processing, no matter be any production method, its even light effect all is limited, all can not play good effect, the opposite side that is positioned at LED lamp pearl at diffuser plate all hot spot can occur, hot spot is obvious more, the light diffusion effect that light diffusing sheet is described is poor more, hot spot is not obvious more, just needs to increase the thickness of light diffusing sheet and the transmitance that reduces light.
The utility model content
The purpose of this utility model is exactly in order to solve the problem that prior art exists, a kind of novel light diffusing sheet and the method for making of this diffuser plate have been proposed, this light diffusing sheet has well even light effect, and the while transmittance is compared the light diffusing sheet of existing same light diffusion effect and wanted high more than 10%.
Concrete technical scheme of the present utility model is as follows:
The utility model provides a kind of light diffusing sheet, it is characterized in that, this light diffusing sheet comprises that a transparent organic plates one is attached to first light diffusion layer of the uniform thickness on the arbitrary plate shaped side of transparent organic plates, also is being pasted with local second light diffusion layer that is used to increase local mist degree of thickening on the described transparent organic plates or on first light diffusion layer.
Described first light diffusion layer and second light diffusion layer are positioned at a side of the same plate shaped side of transparent panel.
Described second light diffusion layer is positioned at a side of the incidence surface of this light diffusing sheet.
Part thickening place of described second light diffusion layer comprises a plurality of low-light diffusion layers that ladder distributes that are.
The stand out of the low-light diffusion layer that same protruding thickening place is adjacent is identical, and the center line of the low-light diffusion layer that same thickening place is adjacent coincides.
The thickness of each low-light diffusion layer is 1 ~ 10 μ m.
The thickness of each low-light diffusion layer is identical.
The utility model beneficial technical effects is:
The utility model is handled by spray printing or the coating of carrying out single face in advance on transparent PC/PMMA/PS base material, and formation one has first diffusion layer of unified thickness.And then measure the exiting surface glazing lightness distribution situation of the light diffusing sheet that only has first diffusion layer by two-dimentional color analysis instrument, adopt three-dimensional printer on the another side of base material or light diffusion layer, to print the light diffusion printing ink corresponding according to the distribution situation of luminance brightness then with light brightness distribution, formation has second light diffusion layer of different-thickness, this thickness distribution level line of second light diffusion layer with different-thickness is corresponding with the light brightness distribution level line, so design, this can have thicker light diffusion layer in the stronger areal distribution of luminance brightness, the more weak zone of luminance brightness has thin light diffusion layer, so can play extraordinary even light effect, under the situation of the light diffusing energy that can guarantee light diffusing sheet, thickness and weight have obtained tangible reduction, cost also can reduce, simultaneously, compare and have the light diffusing sheet of same light diffusion, the transmittance of light diffusing sheet of the present utility model is higher, and volume and weight is littler.
Description of drawings
Fig. 1 has the light diffusing sheet of first light diffusion layer and the side structure synoptic diagram that led light source is installed together among the embodiment 1;
Fig. 2 is the light brightness distribution synoptic diagram among the embodiment 1;
Fig. 3 all has the light diffusing sheet of light diffusion layer and the perspective view that led light source is installed together for two sides among the embodiment 1;
Side structure synoptic diagram when Fig. 4 is the amplification of the utility model embodiment 1 protrusions;
Fig. 5 has the perspective view that first light diffusion layer and the second light diffusion layer light diffusing sheet and led light source are installed together among the utility model embodiment 2;
Fig. 6 has the light diffusing sheet of first light diffusion layer and the side structure synoptic diagram that led light source is installed together for one side among the embodiment 2;
Fig. 7 has the light diffusing sheet of first light diffusion layer and second light diffusion layer and the side structure synoptic diagram that led light source is installed together among the utility model embodiment 3;
Fig. 8 has the light diffusing sheet of first light diffusion layer and second light diffusion layer and the structural representation that led light source is installed together among the utility model embodiment 4.
Embodiment
For the purpose, technical scheme and the advantage that make utility model is clearer,, the utility model is further elaborated below in conjunction with embodiment.Should be appreciated that specific embodiment described herein only in order to explain the utility model, be not used for limiting the utility model.
Embodiment 1
Present embodiment provides a kind of light diffusing sheet, and this light diffusing sheet is used for the LED lighting field, and this light diffusing sheet adopts following method to be made:
(1) be that transparent PC plate 11 is base material by hot-extrudable straight forming one thickness;
(2) adopt the mode of spray printing to print the light diffusion printing ink that a layer thickness is 1 μ m in a plate shaped side of transparent PC plate 11, and then light is spread printing ink oven dry formation first light diffusion layer 12 on transparent PC plate substrate;
(3) above-mentioned light diffusing sheet with first light diffusion layer is installed together with the led light source 20 with a plurality of luminous points 21, makes one side relative, as shown in Figure 1 with led light source with first light diffusion layer;
(4) adopt two-dimentional color analysis instrument that the light brightness distribution of the exiting surface of above-mentioned light diffusing sheet is measured, the point that will have same brightness couples together with the same line, these lines are referred to as the level line 22 of luminance brightness, the level line of different brightness is combined and is formed the light brightness distribution synoptic diagram, as shown in Figure 2;
(5) calculate needs are printed light diffusion printing ink in the another side of light diffusing sheet thickness profile data according to the light brightness distribution synoptic diagram, and this data transmission is given in the three-dimensional printer.Light brightness distribution is corresponding with the thickness of light diffusion printing ink, the zone that luminance brightness is high more, and the thickness of the light diffusion printing ink of required printing is just thick more, the zone that luminance brightness is low more, the thickness of the light diffusion printing ink of required printing is just thin more;
(6) will disassemble with the light diffusing sheet that led light source is installed together, and then according to the thickness profile data of light the to be printed diffusion printing ink that calculates, adopt three-dimensional printer to print the light diffusion printing ink of different-thickness in different zones at the another side of transparent PC plate, and then the oven dry of above-mentioned light diffusion printing ink formed second light diffusion layers with projection 31 that a plurality of local thickenings form, described have a plurality of protruding 31 second light diffusion layer and be positioned on the exiting surface 32 of light diffusing sheet, as shown in Figure 3.The thickness difference everywhere of second light diffusion layer, thicker part are projection;
(7) light diffusing sheet that again two sides is all had a light diffusion layer is installed together with led light source again, during installation, the light diffusing sheet that the two sides all has light diffusion layer is identical with the relative position of light diffusing sheet that only has first light diffusion layer and led light source with the relative position of led light source.
Need to prove, the method for making of above-mentioned light diffusing sheet is the method for making first light diffusing sheet, in extensive and standardized production, because the shape and the specification of each light diffusing sheet, LED lighting all are identical, in large-scale production process, only need obtain and wait to print light diffusion ink thickness distributed data, just can adopt three-dimensional printer to spread printing ink at the another side spray printing light of transparent PC plate more again after good one deck light diffusion printing ink at a spray printing of transparent PC plate.
The light diffusing sheet that adopts said method to produce comprises a transparent PC plate, this transparent PC plate is a base material, on two plate shaped sides of this transparent PC plate 11, be respectively arranged with a light diffusion layer, wherein the surface of first light diffusion layer is the plane, the surface distributed of second light diffusion layer has a plurality of projectioies, and the spacing between the convex center is with the spacing between the luminous point center is identical in twos in twos.Described exiting surface with side of a plurality of projectioies as light diffusing sheet.When described projection is amplified to 10 times, can find that as shown in Figure 4, described protruding 31 comprise a plurality of low-light diffusion layer 311 low-light diffusion layers that ladder distributes that are, the center line of a plurality of low-light diffusion layer low-light diffusion layers coincides.The thickness of each low-light diffusion layer low-light diffusion layer is 1 μ m ~ 10 μ m.
Embodiment 2
Present embodiment as different from Example 1, another light diffusing sheet is provided, this light diffusing sheet is used for LED and shows the field, as shown in Figure 5, the light diffusing sheet of present embodiment comprises a transparent PMMA plate 11, this transparent PMMA plate is a base material, on a plate shaped side of this transparent PMMA plate, be fitted with one first light diffusion layer 12, the surface of this first light diffusion layer is the plane, on this first light diffusion layer, also be fitted with second light diffusion layer, this second light diffusion layer comprises a plurality of protruding 31, and the spacing between protruding in twos 31 centers is with the spacing between luminous point 21 centers is identical in twos.Described exiting surface with a plurality of sides of protruding 31 as light diffusing sheet.When described projection is amplified to 10 times, can find that described protruding 31 comprise a plurality of low-light diffusion layer low-light diffusion layers 311 that ladder distributes that are, the center line of a plurality of low-light diffusion layer low-light diffusion layers 311 coincides.The stand out of the adjacent low-light diffusion layer of same projection low-light diffusion layer 311 is identical, and the thickness of each low-light diffusion layer low-light diffusion layer is 10 μ m.
Above-mentioned light diffusing sheet is to adopt following method to be made:
(1) be that transparent PMMA plate is a base material by hot-extrudable straight forming one thickness;
(2) adopt the mode of spray printing to print the light diffusion printing ink that a layer thickness is 20 μ m in a plate shaped side of transparent PMMA plate, and then light is spread printing ink oven dry formation one first light diffusion layer on transparent PC plate substrate;
(3) above-mentioned light diffusing sheet with first light diffusion layer is installed together with the led light source with a plurality of luminous points, makes one side relative, as shown in Figure 6 with led light source with light diffusion layer;
(4) adopt two-dimentional color analysis instrument that the light brightness distribution of the exiting surface of above-mentioned light diffusing sheet is measured, the point that will have same brightness couples together with the same line, these lines are referred to as the level line of luminance brightness, and the level line of different brightness is combined and formed the light brightness distribution synoptic diagram;
(5) calculate needs are printed light diffusion printing ink on the above-mentioned light diffusion layer of light diffusing sheet thickness profile data according to the light brightness distribution synoptic diagram, and this data transmission is given in the three-dimensional printer.Light brightness distribution is corresponding with the thickness of light diffusion printing ink, the zone that luminance brightness is high more, and the thickness of the light diffusion printing ink of required printing is just thick more, the zone that luminance brightness is low more, the thickness of the light diffusion printing ink of required printing is just thin more;
(6) will disassemble with the light diffusing sheet that led light source is installed together, and then according to the thickness profile data of light the to be printed diffusion printing ink that calculates, adopt the zones of different of three-dimensional printer on above-mentioned light diffusion layer to print the light diffusion printing ink of different-thickness, and then the oven dry of above-mentioned light diffusion printing ink is formed another have a plurality of protruding 31 second light diffusion layer, described second light diffusion layer with a plurality of projectioies is positioned on the exiting surface 32 of light diffusing sheet, as shown in Figure 5;
(7) light diffusing sheet that again two sides is all had a light diffusion layer is installed together with led light source again, during installation, the light diffusing sheet with first light diffusion layer and second light diffusion layer is identical with the relative position of light diffusing sheet that only has first light diffusion layer and led light source with the relative position of led light source.
Embodiment 3
The light diffusing sheet that present embodiment provides is identical with the light diffusing sheet that embodiment 1 provides, but it is different with embodiment 1, the exiting surface 32 of described light diffusing sheet is that light diffusion layer 12, the second light diffusion layers on plane are relative with the luminous point 21 of led light source 20, as shown in Figure 7.The method for making of this light diffusing sheet is also identical with embodiment 1.
Embodiment 4
The light diffusing sheet that present embodiment provides is identical with the light diffusing sheet that embodiment 2 provides, but it is different with embodiment 2, the exiting surface of described light diffusing sheet is a side that does not have the transparent PMMA plate of light diffusion layer, and second light diffusion layer is relative with led light source, as shown in Figure 8.The method for making of this light diffusing sheet is identical with embodiment 2.
It should be noted that, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (7)
1. light diffusing sheet, it is characterized in that, this light diffusing sheet comprises that a transparent organic plates one is attached to first light diffusion layer of the uniform thickness on the arbitrary plate shaped side of transparent organic plates, also is being pasted with local second light diffusion layer that is used to increase local mist degree of thickening on the described transparent organic plates or on first light diffusion layer.
2. light diffusing sheet according to claim 1 is characterized in that, described first light diffusion layer and second light diffusion layer are positioned at a side of the same plate shaped side of transparent panel.
3. light diffusing sheet according to claim 1 is characterized in that, described second light diffusion layer is positioned at a side of the incidence surface of this light diffusing sheet.
4. light diffusing sheet according to claim 1 is characterized in that, part thickening place of described second light diffusion layer comprises a plurality of low-light diffusion layers that ladder distributes that are.
5. light diffusing sheet according to claim 4 is characterized in that, the stand out of the low-light diffusion layer that same protruding thickening place is adjacent is identical, and the center line of the low-light diffusion layer that same thickening place is adjacent coincides.
6. according to claim 4 or 5 described light diffusing sheets, it is characterized in that the thickness of each low-light diffusion layer is 1 ~ 10 μ m.
7. light diffusing sheet according to claim 6 is characterized in that the thickness of each low-light diffusion layer is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201161088U CN203084225U (en) | 2013-03-14 | 2013-03-14 | Light diffusion plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201161088U CN203084225U (en) | 2013-03-14 | 2013-03-14 | Light diffusion plate |
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| Publication Number | Publication Date |
|---|---|
| CN203084225U true CN203084225U (en) | 2013-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013201161088U Expired - Fee Related CN203084225U (en) | 2013-03-14 | 2013-03-14 | Light diffusion plate |
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| Country | Link |
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| CN (1) | CN203084225U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103135153A (en) * | 2013-03-14 | 2013-06-05 | 深圳市汇晨电子有限公司 | Light diffusion plate and manufacture method thereof |
| CN110657376A (en) * | 2018-06-28 | 2020-01-07 | 松下知识产权经营株式会社 | Lighting device |
-
2013
- 2013-03-14 CN CN2013201161088U patent/CN203084225U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103135153A (en) * | 2013-03-14 | 2013-06-05 | 深圳市汇晨电子有限公司 | Light diffusion plate and manufacture method thereof |
| CN110657376A (en) * | 2018-06-28 | 2020-01-07 | 松下知识产权经营株式会社 | Lighting device |
| CN110657376B (en) * | 2018-06-28 | 2022-03-11 | 松下知识产权经营株式会社 | Lighting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130724 Termination date: 20160314 |
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| CF01 | Termination of patent right due to non-payment of annual fee |