CN101276008A - Optical element - Google Patents
Optical element Download PDFInfo
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- CN101276008A CN101276008A CNA2007100880923A CN200710088092A CN101276008A CN 101276008 A CN101276008 A CN 101276008A CN A2007100880923 A CNA2007100880923 A CN A2007100880923A CN 200710088092 A CN200710088092 A CN 200710088092A CN 101276008 A CN101276008 A CN 101276008A
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Abstract
The present invention provides an optical element which comprises an element body and a plurality of micro-lens units. The element body is provided with a first plane. A plurality of micro-lens units are arranged on the first plane with a two-dimensional form. A plurality of micro-lens units on the optical element of the invention have the characteristics of different shape and dimension, random arrangement and no orderliness. The purpose of no generating interference fringe and providing the effects of light collection and diffusion can be obtained.
Description
Technical field
The present invention is relevant a kind of optical element, refers in particular to a kind ofly to be distributed in optical element surface to reach the optical element that does not produce interference fringe and light harvesting and diffusion effect are provided simultaneously with two dimensional form.
Background technology
In the present module backlight, mainly be to utilize diffusion sheet, brightness enhancement film (Brightness Enhancement Film, BEF) or polarisation blast sheet (Dual Brightness Enhancement Film DBEF) waits the collocation of blooming piece to make and is used for reaching the purpose that makes light even and concentrated.As shown in Figure 1, this figure is existing brightness enhancement film synoptic diagram.Existing brightness enhancement film 1 has the V ditch 10 of periodic arrangement, though can effectively increase the brightness of facing, has also produced the easy observed interference fringe of naked eyes (interference fringes).
In the prior art, as United States Patent (USP) U S.Pat.No.5,919,551 disclosed a kind of bloomings with different pitches (pitch), it is a purpose of eliminating blooming and display pannel generation interference fringe by changing V ditch pitch size on the brightness enhancement film, reaching.
In addition, as U.S. Pat .Pat.No.6,862,141 disclosed a kind of optical substrate structures, this patent except reaching the purpose of blast, also can be eliminated the interference fringe that blooming and display pannel produce by non-directional V ditch.
Summary of the invention
Fundamental purpose of the present invention is for a kind of optical element is provided, it is to be distributed in most lenticule unit on the surface of optical element with two dimensional form, this lenticule cell configuration, size difference and arrangement arbitrarily, do not have systematicness, can reach the purpose that does not produce interference fringe and light harvesting and diffusion effect are provided simultaneously.
To achieve the above object, the invention provides a kind of optical element, comprising: an element body, it is to have one first plane; And most lenticule unit, it is to be distributed on this first plane with two dimensional form.
In one embodiment, this lenticule unit is to be a polyhedral structure.Wherein the shape of this each face of polyhedral structure is to be a polygon.In addition, the top of this polyhedral structure be may be selected to be a bit, a crest line and a plane one of them.The bottom surface height of this crest line and this lenticule unit is between 1 μ m to 100 μ m.The shape on this plane is to be a polygon plane.The height of the bottom surface of this plane and this lenticule unit is between 1 μ m to 100 μ m.
In one embodiment, this lenticule unit also has at least one pair of corresponding main side plane, and most secondary side planes constitute.Wherein should spend less than 90 greater than 0 degree the angle between the main side plane.In addition, this main side plane also has a drift angle, and it is between 150 degree between 30 degree.Should can be identical angle or different angles to the drift angle of main side plane.
In one embodiment, this component body is transparent macromolecular material.Wherein also can contain diffusion particle or liquid crystal molecule in this transparent macromolecular material.
In one embodiment, this component body is that material by gradually changed refractive index is constituted.
In one embodiment, this component body also has one second plane, and it is corresponding with this first plane.This second plane, it is to be an even surface or a uneven surface.
In one embodiment, this majority lenticule unit is into array and is distributed on this first plane.In addition, this majority lenticule unit is into irregular alignment and is distributed on this first plane.
In one embodiment, this majority lenticule unit has at least a above structure, that is this majority lenticule unit can be made of shape, lenticule unit that size is different.
Description of drawings
For making the auditor further cognitive and understanding be arranged to feature of the present invention, purpose and function, hereinafter the spy describes the relevant thin portion structure of device of the present invention and the theory reason of design, so that the auditor can understand characteristics of the present invention, detailed description is presented below, wherein:
Fig. 1 is existing brightness enhancement film synoptic diagram.
Fig. 2 A is optical element embodiment diagrammatic cross-section of the present invention.
Fig. 2 B is optical element embodiment schematic perspective view of the present invention.
Fig. 3 is the lenticule of the present invention unit first embodiment synoptic diagram.
Fig. 4 A is the lenticule of the present invention unit second embodiment synoptic diagram.
Fig. 4 B is the polyhedral structure schematic side view for Fig. 4 A.
Fig. 4 C is another embodiment schematic side view of polyhedral structure for Fig. 4 A.
Fig. 5 A and Fig. 5 B are lenticule of the present invention unit the 3rd embodiment synoptic diagram.
Fig. 6 is lenticule of the present invention unit the 4th embodiment synoptic diagram.
Fig. 7 A is the analysis result of optical element of the present invention under autocorelationimage.
Fig. 7 B is the simulation result for optical element collection optical activity of the present invention.
Embodiment
See also shown in Fig. 2 A, this figure is optical element embodiment diagrammatic cross-section of the present invention.This optical element 2 has an element body 20.This component body 20 is to be transparent macromolecular material.Wherein also can contain diffusion particle or liquid crystal molecule in this transparent macromolecular material.In addition, this component body 20 can be made of the material of gradually changed refractive index.
Have one first plane 201 and one second plane 202 on this component body 20.See also shown in Fig. 2 B, this figure is optical element embodiment schematic perspective view of the present invention.Have most lenticule unit 21a-21e on this first plane 201, this majority lenticule unit 21a-21e is that the form with Two dimensional Distribution is arranged on this first plane 201.The mode of this Two dimensional Distribution can be for array type regularly arranged, also can be any irregular arrangement.This majority lenticule unit 21a-21e can comprise at least a above structure, that is the individual shaped of lenticule unit, size can be identical or inequality.Single lenticule unit is to be a polyhedral structure.The summit of this polyhedral structure can be point, crest line, face or aforesaid combination.This second plane 202 is corresponding with this first plane 201.This second plane 202, it is to be an even surface or a uneven surface.
Next, microlens structure embodiment of the present invention is described.See also shown in Figure 3ly, this figure is the lenticule of the present invention unit first embodiment synoptic diagram.In the present embodiment, the top of this polyhedral structure 3 is point 30 form, and is formed for most polygons 31 link to each other around it, and a side of this polyhedral structure 3 polygon plane 31 on every side is to be connected with first plane of this component body.In the present embodiment, this polygon 31 is a triangle.
See also shown in Fig. 4 A, this figure is the lenticule of the present invention unit second embodiment synoptic diagram.Polyhedral structure 4 tops are the forms for crest line 40 in the present embodiment, the plane of these polyhedral structure 4 side periphery is to be connected and to be formed by most polygon plane 41-44, and the side of plane 41-44 is on every side joined to form the top crest line 40 of this polygonized structure 4.Each polygon plane of present embodiment is to can be a triangle, quadrilateral, other polygon or aforesaid combination, does not exceed with the form of present embodiment.
See also this figure shown in Fig. 4 B and be polyhedral structure schematic side view for Fig. 4 A.In the present embodiment, the height h between this crest line 40 and this polyhedral structure can be different and change along with the position, and the scope of height h is between 1 μ m to 100 μ m, that is the bottom surface of this crest line 40 and this polyhedral structure has an angle theta 1.Except the mode of Fig. 4 B, see also shown in Fig. 4 C, this figure is another embodiment schematic side view of polyhedral structure for Fig. 4 A.The crest line 40 of the polyhedral structure in Fig. 4 C is to keep certain height H with the bottom surface of this polyhedral structure, that is the bottom surface of this crest line 40 and this polyhedral structure is parallel to each other.In the present embodiment, the scope of this height H is between 1 μ m to 100 μ m.
Return shown in Fig. 4 A, this polyhedral structure has a pair of main side plane 41,42 and most secondary side planes 43,44, this main side plane 41,42 and secondary side plane 43,44 can be polygon, for example: triangle, quadrilateral, pentagon etc., this main side plane the 41, the 42nd in the present embodiment is for a triangle, this secondary side plane 43,44 are quadrilateral.These two main side planes 41,42 have a vertex angle theta 2 respectively, and it is to be connected with the top crest line 40 of this polyhedral structure, and this vertex angle theta 2 is between 150 degree between 30 degree.The size of this vertex angle theta 2 is the quality of influence collection optical activity.In addition, this vertex angle theta 2 to main side plane 41,42 can be identical or inequality.In addition, shown in Fig. 4 B, the angle theta 3 between these two main side planes 41,42 is between 90 degree between 0 degree.
See also shown in Fig. 5 A, this figure is lenticule of the present invention unit the 3rd embodiment synoptic diagram.This lenticule unit is to be a polyhedral structure 5, and its top is a plane 50, has four polygon plane 51-54 around it.This plane 50 be and the bottom surface of this polyhedral structure 5 between have two angle theta 4, θ 5.Height change between this plane and this polyhedron bottom surface is between 1 μ m to 100 μ m in the present embodiment.In addition, also can be shown in Fig. 5 B, this plane 50 is that the bottom surface with this polyhedral structure 5 is parallel to each other.In the present embodiment, the height between this plane 50 and this polyhedral structure 5 bottom surfaces is between 1 μ m to 100 μ m.
As shown in Figure 6, the top of this polyhedral structure 6 also is a plane 60, this polyhedral structure 6 has a pair of main side plane 61,62 and most secondary side planes 63,64, this main side plane 61,62 and secondary side plane 63,64 can be polygon, for example: triangle, quadrilateral, pentagon etc., this main side plane the 61, the 62nd in the present embodiment, for a triangle, this secondary side plane 63,64 are quadrilateral, but not as limit.Should have a vertex angle theta 6 respectively to main side plane 61,62, it is to be connected with the top plan 60 of this polyhedral structure 6, and this vertex angle theta 6 is between 150 degree between 30 degree.In addition, this vertex angle theta 6 to main side plane 61,62 can be identical or inequality.In addition, as shown in Figure 6, the angle theta 7 of two main side planes is between 90 degree between 0 degree.
Optical element proposed by the invention has the effect of light harvesting and diffusion to light source, and does not produce interference fringe.The number of lenses component cloth that this optical element surface is made up of most lenticule unit, this lens array are made up of shape, most lenticule unit that size is different.See also shown in Fig. 7 A, of the present invention this is not had an optical element of systematicness lenticule array, analyzes via autocorrelation image, can determine not produce interference fringe.Wherein Fig. 7 A (a) is the original image of optical element of the present invention, and Fig. 7 A (b) is autocorrelation result of calculation, and periodically striped does not occur.In addition, see also shown in Fig. 7 B, this figure is the collection optical activity simulation result for optical element of the present invention.Curve 90 is the collection optical activity curves for existing BEF 90/50 optical element, curve 91 then is the collection optical activity curve of optical element of the present invention, by learning among the figure, under the situation that does not produce interference fringe, optical element of the present invention can also be maintained the collection optical activity identical with existing BEF90/50.
Only above-described, only be embodiments of the invention, when can not with the restriction scope of the invention.Be that every equalization of doing according to claim of the present invention changes and modification, will do not lose main idea of the present invention place, also do not break away from the spirit and scope of the present invention, the former capital should be considered as further enforcement situation of the present invention.
Comprehensively above-mentioned, optical element provided by the invention, have the interference fringe of not producing and light harvesting and diffusion effect are provided simultaneously, therefore can satisfy the demand of industry, and then improve the competitive power of this industry and drive arround the development of industry, really met the required condition that possesses of patent of invention method defined application invention, so propose the application of patent of invention in accordance with the law.
Claims (16)
1. an optical element is characterized in that, comprising:
One element body, it is to have one first plane; And
A most lenticule unit, it is to be distributed on this first plane with two dimensional form.
2. as claim 1 a described optical element, it is characterized in that wherein this lenticule unit is to be a polyhedral structure, this each face of polyhedral structure be shaped as a polygon.
3. as claim 2 a described optical element, it is characterized in that, wherein the top of this polyhedral structure may be selected to be a bit, a crest line and a plane one of them.
4. as claim 3 a described optical element, it is characterized in that wherein this crest line is parallel with the bottom surface of this polyhedral structure.
5. as claim 3 a described optical element, it is characterized in that wherein the bottom surface of this crest line and this polyhedral structure is an angle.
6. as claim 3 a described optical element, it is characterized in that wherein the bottom surface height of this crest line and this lenticule unit is between 1 μ m to 100 μ m.
7. as claim 3 a described optical element, it is characterized in that wherein this plane is shaped as a polygon plane.
8. as claim 3 a described optical element, it is characterized in that wherein this plane is parallel with the bottom surface of this polyhedral structure.
9. as claim 3 a described optical element, it is characterized in that wherein the bottom surface of this plane and this polyhedral structure is an angle.
10. as claim 2 a described optical element, it is characterized in that wherein this lenticule unit also has the main side plane of pair of corresponding, and most secondary side planes constitute.
11., it is characterized in that wherein should spend less than 90 greater than 0 degree the angle of main side plane, this main side plane also has a drift angle as claim 10 a described optical element, it is between 150 degree between 30 degree.
12. as claim 1 a described optical element, it is characterized in that, wherein this component body be a transparent macromolecular material and a gradually changed refractive index material one of them.
13. as claim 12 a described optical element, it is characterized in that, wherein also have in this transparent macromolecular material a diffusion particle and a liquid crystal molecule one of them.
14., it is characterized in that wherein this component body also has one second plane as claim 1 a described optical element, it is corresponding with this first plane, this second plane, its be may be selected to be an even surface and a uneven surface one of them.
15., it is characterized in that, wherein should a majority lenticule unit be to be distributed on this first plane with array and in one of them mode of irregular alignment as claim 1 a described optical element.
16., it is characterized in that wherein should having at least a structure in a majority lenticule unit as claim 1 a described optical element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100880923A CN101276008A (en) | 2007-03-26 | 2007-03-26 | Optical element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100880923A CN101276008A (en) | 2007-03-26 | 2007-03-26 | Optical element |
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| Publication Number | Publication Date |
|---|---|
| CN101276008A true CN101276008A (en) | 2008-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007100880923A Pending CN101276008A (en) | 2007-03-26 | 2007-03-26 | Optical element |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672615A (en) * | 2013-12-13 | 2014-03-26 | 中航华东光电有限公司 | Backlight module for imaging projection system |
| CN114325900A (en) * | 2015-10-29 | 2022-04-12 | 迪睿合株式会社 | Diffusion plate, method for designing diffusion plate, method for manufacturing diffusion plate, display device, projection device, and illumination device |
-
2007
- 2007-03-26 CN CNA2007100880923A patent/CN101276008A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672615A (en) * | 2013-12-13 | 2014-03-26 | 中航华东光电有限公司 | Backlight module for imaging projection system |
| CN114325900A (en) * | 2015-10-29 | 2022-04-12 | 迪睿合株式会社 | Diffusion plate, method for designing diffusion plate, method for manufacturing diffusion plate, display device, projection device, and illumination device |
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Open date: 20081001 |