CN114662291B - A microstructure arrangement method and a diffusion plate - Google Patents
A microstructure arrangement method and a diffusion plate Download PDFInfo
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- CN114662291B CN114662291B CN202210223680.8A CN202210223680A CN114662291B CN 114662291 B CN114662291 B CN 114662291B CN 202210223680 A CN202210223680 A CN 202210223680A CN 114662291 B CN114662291 B CN 114662291B
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- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
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Abstract
The embodiment of the application provides a microstructure arrangement method and a diffusion plate, relates to the technical field of optical element design, and aims to solve the problem that an optical effect of an optical element is unstable due to the fact that a frosted surface is arranged on the optical element. The microstructure arrangement method comprises the steps of constructing a plurality of first points on a reference surface based on a preset arrangement mode, respectively constructing a closed graph by taking each first point as a datum point, randomly acquiring a second point in each closed graph, and arranging microstructures on the surface of the microstructure to be arranged based on the acquired second points.
Description
Technical Field
The present application relates to the field of optical element design technology, and in particular, to a microstructure arrangement method and a diffusion plate.
Background
In the design of optical elements, it is often necessary to provide the optical element with a frosting. In the related art, a frosting process is generally adopted to process the frosting surface, and the frosting process is adopted to process the frosting surface, so that the problem of unstable structure of the frosting surface exists. For example, for two optical elements provided with frosting, if one of the optical elements has a good frosting effect, the other optical element has a poor frosting effect, so that the two optical elements have different optical effects. It is known that the frosting provided on the optical element makes the optical effect of the optical element unstable.
Disclosure of Invention
The embodiment of the application provides a microstructure arrangement method and a diffusion plate, which are used for solving the problem that an optical effect of an optical element is unstable due to the frosted surface arranged on the optical element.
In a first aspect, an embodiment of the present application provides a microstructure arrangement method.
The microstructure arrangement method provided by the embodiment of the application comprises the following steps:
constructing a plurality of first points on the reference surface based on a preset arrangement mode;
taking each first same point as a datum point to respectively construct a closed graph;
randomly acquiring a second sample point in each closed graph;
and arranging the microstructures on the surface of the microstructures to be arranged based on the acquired second sample points.
Optionally, the preset arrangement mode is a fibonacci number series arrangement mode.
Optionally, the preset arrangement mode is an array arrangement mode.
Optionally, the constructing a plurality of first points on the reference surface includes constructing a plurality of first points on the reference surface at a target density.
Optionally, the closed figure constructed is a Thiessen polygon.
Optionally, the shape of all the closed figures constructed is the same.
Optionally, the closed graph is circular, the sizes of the closed graph are equal, and the first same point is the center of the closed graph.
Optionally, randomly acquiring a second sample point in each closed graph comprises taking the first sample point corresponding to the closed graph as an offset point in each closed graph, and offsetting the offset point in a target direction and a target distance, wherein the offset point is positioned in the closed graph, and taking the offset point as the second sample point.
Optionally, the arranging the microstructures on the surface of the microstructures to be arranged based on the acquired second sample points comprises mapping each second sample point to the surface of the microstructures to be arranged; and constructing a third sample point at the position where the second sample point is mapped to the surface of the microstructure to be arranged, and arranging the microstructures on the surface of the microstructure to be arranged in a one-to-one correspondence manner by taking the third sample point as a reference point.
Optionally, the reference surface is a surface of the microstructure to be arranged.
In a second aspect, embodiments of the present application provide a diffuser plate.
The diffusion plate provided by the embodiment of the application comprises a light incident surface and a light emergent surface, wherein at least one of the light incident surface and the light emergent surface is provided with microstructures according to any one of the microstructure arrangement methods provided in the first aspect.
The above at least one technical scheme adopted by the embodiment of the application can achieve the following beneficial effects:
In the embodiment of the application, the microstructure can be constructed on the three-dimensional model of the optical element based on the microstructure arrangement method, and the real object of the optical element can be processed based on the three-dimensional model of the optical element with the microstructure, so that the real object of the optical element is basically consistent with the three-dimensional model of the optical element. Further, the microstructure of each optical element can be made to be substantially uniform, and the problem of unstable optical effect due to unstable structure of the frosted surface of the optical element can be solved.
In addition, in the embodiment of the application, the arrangement of the first sample points can be regular, and the second sample points can have a certain dispersion on the basis of the first sample points by randomly acquiring the second sample points in the closed graph constructed based on the first sample points. In this way, the second samples may be made not too random nor too regular. Therefore, the microstructure arranged in the arrangement mode based on the second sample points is not too random or too regular, and the optical element has a good optical effect.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the related art, the drawings that are required to be used in the embodiments or the related technical descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained according to the drawings without inventive effort for those skilled in the art.
FIG. 1 is a flow chart of a method for arranging microstructures according to an embodiment of the present application;
FIG. 2 is a schematic diagram of an arrangement of first points according to an embodiment of the present application;
FIG. 3 is a schematic diagram of another first sample arrangement according to an embodiment of the present application;
Fig. 4 is a schematic diagram of an arrangement of second sample points according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be clearly and completely described below with reference to specific embodiments of the present application and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Although terms used in the present application are selected from publicly known and commonly used terms, some terms mentioned in the description of the present application may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein. Furthermore, it is required that the present application is understood, not simply by the actual terms used but by the meaning of each term lying within.
The following describes in detail the technical solutions provided by the embodiments of the present application with reference to the accompanying drawings.
The embodiment of the application provides a microstructure arrangement method. Referring to fig. 1, the microstructure arrangement method provided by the embodiment of the present application may include:
Step 110, constructing a plurality of first points on the reference surface based on a preset arrangement mode.
In the embodiment of the present application, the preset arrangement mode may be a specification arrangement mode. Referring to fig. 2, the preset arrangement may be, for example, a fibonacci frontal array arrangement. Thus, in an embodiment of the application, a plurality of first points 220 can be constructed on the reference surface 210 based on a fibonacci frontal array arrangement.
Referring to fig. 3, in an embodiment of the present application, the preset arrangement may be an array arrangement. The preset arrangement may be a rectangular array arrangement, for example. Thus, in embodiments of the present application, a plurality of first spots 220 may be constructed on the reference surface 210 based on an array arrangement. In the embodiment of the present application, a plurality of first points may be constructed on the reference surface by other arrangements, which are not listed here.
It should be noted that, in the embodiment of the present application, the reference surface may be a surface of the microstructure to be arranged, and the reference surface may also be a surface constructed based on the surface of the microstructure to be arranged. In case the reference plane is a plane constructed based on the surface of the microstructure to be arranged, the projection of the surface of the microstructure to be arranged may fall into the reference plane. That is, the area of the reference plane may be larger than the surface of the microstructure to be arranged.
It is further noted that in embodiments of the present application, constructing the plurality of first points at the reference surface includes constructing the plurality of first points at the reference surface at the target density. Illustratively, the density of the first dots may be controlled by adjusting the number of first dots constructed. For example, 2000 first spots may be constructed on the reference surface, or 4000 first spots may be constructed on the reference surface, so that the density of the first spots may be controlled by adjusting the number of first spots constructed. Other ways of controlling the density of the first spot may also be used in embodiments of the application, not specifically shown herein.
In step 120, a closed figure is constructed with each first identical point as a reference point.
In the embodiment of the application, after the first points are constructed, a closed figure can be respectively constructed by taking each first point as a datum point. In an embodiment of the application, the closed figure constructed may be a Thiessen polygon. It should be noted that, the Thiessen polygon is also called Feng Luo North-Iris, and the Thiessen polygon is a group of continuous polygons formed by perpendicular bisectors connecting two adjacent point line segments. Any point within a Thiessen polygon is less distant from the control points that make up that polygon than the other polygon control points.
In the embodiment of the present application, the shape of each closed figure may be the same. For example, each of the closed figures may be made triangular, circular, rectangular, or the like.
In an embodiment of the present application, the size of each of the closed figures may also be made equal. For example, the closed figures may be constructed to each be square with a side length of 1 mm.
Illustratively, in an embodiment of the present application, the closed figure may be circular, and the first point may be the center of the closed figure. Thus, the difficulty in constructing the closed figure can be reduced.
It should be noted that, in the embodiment of the present application, the first point may be located at the center of the closed figure, may be located within the closed figure, or may be located at another position of the closed figure. Illustratively, in the embodiment of the present application, the closed figure may be a rectangle, and the first same point may be located at the center of the rectangle, or may be at any one of the vertices of the rectangle, or may be located at another position of the rectangle. This is not a mere example.
At step 130, a second sample is randomly acquired within each closed figure.
In the embodiment of the application, after the construction of the closed graphs is completed, a second sampling point can be randomly acquired in each closed graph. It should be noted that, in the embodiment of the present application, adjacent closed patterns may not overlap. Thus, the second sample points can be distributed uniformly. Of course, in other embodiments of the present application, there may be overlapping areas between adjacent closed figures, which are not described herein.
Alternatively, in the embodiment of the application, the first sample point corresponding to the closed graph is taken as the offset point in each closed graph, the offset point is offset in the target direction and the target distance, wherein the offset point is positioned in the closed graph, and the offset point is taken as the second sample point. In this way, the second sample points can be distributed more uniformly by shifting the shift points in the target direction and the target distance.
In the embodiment of the application, when the closed patterns are round and the first sample points are the circle centers of the closed patterns, the step of randomly acquiring one second sample point in each closed pattern comprises the steps of taking the first sample point corresponding to the closed pattern as an offset point, and taking the offset point as the second sample point, wherein the target distance is smaller than the radius of the closed pattern, and the offset point is offset in the target direction and the target distance.
In the embodiment of the application, the target direction and the target distance can be randomly selected through a corresponding random number generation algorithm, and the target distance is only required to be smaller than the radius of the closed graph. Illustratively, the closed figure may be a circle having a radius of 1mm, the target direction may be offset upward by 15 degrees from the right side of the first spot, and the target distance may be 0.8 mm.
It should be noted that, in other embodiments of the present application, the second sample point may be obtained randomly in the closed graph by using a random number generation algorithm, and specifically, a random number generation algorithm in the prior art may be selected. This will not be explained here.
And 140, arranging the microstructures on the surface of the microstructures to be arranged based on the acquired second sample points.
In an embodiment of the present application, after the second sample point is obtained, the microstructure may be arranged on the surface of the microstructure to be arranged based on the obtained second sample point. In embodiments of the present application, the first sample may be replaced with the second sample. Thus, the microstructures can be arranged in the arrangement of the second spots.
Referring to fig. 4, in the embodiment of the present application, in the case where the preset arrangement is fibonacci series arrangement and the reference surface is the surface of the microstructure to be arranged, the second sample point 230 may also be located on the surface of the microstructure to be arranged, so that the microstructure may be arranged on the surface of the microstructure to be arranged with the second sample point 230 as a reference point.
In the embodiment of the present application, since the first sample points are arranged in a preset arrangement manner, the arrangement of the first sample points 220 is more regular, and the second sample points 230 have a certain dispersion with respect to the first sample points 220 by randomly acquiring the second sample points 230 in the closed graph constructed based on the first sample points 220. In this way, the second spots 230 may be arranged so as not to be too random or too regular.
In the embodiment of the application, under the condition that the reference surface is a surface constructed based on the surface of the microstructure to be arranged, each second sample point can be mapped to the surface of the microstructure to be arranged, further, a third sample point can be constructed at the position of the second sample point mapped to the surface of the microstructure to be arranged, and further, the microstructure can be arranged on the surface of the microstructure to be arranged in a one-to-one correspondence mode by taking the third sample point as a datum point. In this way, the microstructures can be arranged in the arrangement of the third spots.
It should be noted that, for example, in the embodiment of the present application, the third sample point may be constructed on the surface of the microstructure to be arranged by projecting the second sample point on the reference surface onto the surface of the microstructure to be arranged, so that the microstructures may be arranged on the surface of the microstructure to be arranged in a one-to-one correspondence with the third sample point as the reference point. In embodiments of the present application, the shape and size of each microstructure may be the same, thus facilitating processing of the microstructures. Of course, in other embodiments of the application, the shape and size of each microstructure may also be different and will not be described here.
It should be further noted that, in the embodiments of the present application, the microstructure may refer to a fine protrusion or a fine depression provided on a surface of the microstructure to be arranged. After the microstructures are arranged on the surfaces of the microstructures to be arranged, the surfaces of the microstructures to be arranged can be uneven, so that light rays can be refracted or reflected by the microstructures, and the microstructures to be arranged can be made to present special optical effects. Illustratively, the microstructures may be hemispherical, triangular prism, quadrangular prism, etc. shaped projections or depressions. For example, in the case where the microstructure is hemispherical, the center of sphere of the microstructure may be located at the second sample point. In addition, in the embodiments of the present application, the microstructure may be other convex structures, and the top surface of the microstructure may be concave or convex.
In the embodiment of the application, the microstructure can be constructed on the three-dimensional model of the optical element based on the microstructure arrangement method, and the real object of the optical element can be processed based on the three-dimensional model of the optical element with the microstructure. In this way, the physical object of the optical element can be made to substantially coincide with the three-dimensional model of the optical element. Further, the microstructure of each optical element can be made to be substantially uniform, and the problem of unstable optical effect of the frosted surface of the optical element due to unstable structure of the frosted surface can be solved.
It should be noted that, in the embodiment of the present application, the density of the first sample point may be adjusted by adjusting the number of the first sample points, so as to indirectly adjust the density of the second sample point. The dispersion of the second spots can be adjusted by adjusting the size of the closed figure. In the embodiment of the application, different microstructure arrangement modes can be constructed by adjusting the density and the dispersion of the second sample points. Therefore, different microstructure arrangement modes and microstructure structure forms can be subjected to optical simulation, and the optical effect of the microstructure is basically consistent with that of the frosted surface, so that the frosted surface can be replaced by the microstructure.
It should be noted that if the second sample points are directly constructed on the surface of the microstructure to be arranged in a random manner, the density of the second sample points will be uneven. Therefore, the microstructure is deformed, the original sparse arrangement place is sparse, and even part of the area is free of the microstructure, so that the optical effect of the optical element is poor. By adopting the scheme provided by the embodiment of the application, the arrangement of the first sample points 220 is regular, and the second sample points 230 have certain dispersion on the basis of the first sample points 220 by randomly acquiring the second sample points 230 in the closed graph constructed on the basis of the first sample points 220, so that the second sample points 230 are not too random nor too regular. Therefore, the microstructure arranged based on the arrangement mode of the second sample points 230 is not too random or too regular, and the optical element has a better optical effect.
The embodiment of the application also provides a diffusion plate. The diffusion plate provided by the embodiment of the application comprises a light incident surface and a light emergent surface, wherein at least one of the light incident surface and the light emergent surface is provided with microstructures according to any one of the microstructure arrangement methods provided by the embodiment of the application.
In this way, in the embodiment of the present application, the microstructure may be constructed on the three-dimensional model of the diffusion plate based on the microstructure arrangement method, and the real object of the diffusion plate may be processed based on the three-dimensional model of the diffusion plate constructed with the microstructure, so that the real object of the diffusion plate may be substantially identical to the three-dimensional model of the diffusion plate. Further, the micro-structure of each diffusion plate can be made to be basically consistent, so that the problem of unstable optical effect of the frosted surface of the diffusion plate caused by unstable structure of the frosted surface can be solved.
In addition, in the embodiment of the application, the arrangement of the first sample points can be regular, and the second sample points can have a certain dispersion on the basis of the first sample points by randomly acquiring the second sample points in the closed graph constructed based on the first sample points. In this way, the second samples may be made not too random nor too regular. Therefore, the microstructure arranged in the arrangement mode based on the second sample points is not too random and too regular. Thus, the diffusion plate has better optical effect.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations may be made therein without departing from the principles and spirit of the embodiments of the application, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A method of microstructural arrangement, comprising:
constructing a plurality of first points on the reference surface based on a preset arrangement mode;
Respectively constructing a closed graph by taking each first identical point as a reference point, wherein the closed graph is circular, the sizes of the closed graphs are equal, and the first identical points are the circle centers of the closed graph;
randomly acquiring a second sample point in each closed graph;
and arranging the microstructures on the surface of the microstructures to be arranged based on the acquired second sample points.
2. The microstructure arrangement method according to claim 1, wherein the preset arrangement is a fibonacci series arrangement or an array arrangement.
3. The microstructure layout method according to claim 1, wherein the constructing a plurality of first spots on the reference surface includes constructing a plurality of first spots at a target density on the reference surface.
4. The method of claim 1, wherein randomly acquiring a second sample within each of the closed figures comprises:
And in each closed graph, taking the first sample point corresponding to the closed graph as an offset point, and offsetting the offset point by a target direction and a target distance, wherein the offset point after offset is positioned in the closed graph, and taking the offset point after offset as the second sample point.
5. The microstructure arranging method according to claim 1, wherein the arranging the microstructures on the surface of the microstructures to be arranged based on the obtained second sample points includes:
the method comprises the steps of mapping each second sample point to the surface of the microstructure to be arranged, constructing a third sample point at the position where the second sample point is mapped to the surface of the microstructure to be arranged, and arranging the microstructures on the surface of the microstructure to be arranged in a one-to-one correspondence mode by taking the third sample point as a reference point.
6. The microstructure arrangement method according to claim 1, wherein the reference surface is a surface of the microstructure to be arranged.
7. A diffusion plate, characterized in that the diffusion plate includes a light incident surface and a light exit surface, and at least one of the light incident surface and the light exit surface has microstructures arranged thereon according to the microstructure arrangement method of any one of claims 1 to 6.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210223680.8A CN114662291B (en) | 2022-03-07 | 2022-03-07 | A microstructure arrangement method and a diffusion plate |
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| CN202210223680.8A CN114662291B (en) | 2022-03-07 | 2022-03-07 | A microstructure arrangement method and a diffusion plate |
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| CN114662291B true CN114662291B (en) | 2025-02-28 |
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| CN1386203A (en) * | 2000-07-31 | 2002-12-18 | 罗切斯特光电器件公司 | Structure screen for controlled spreading of light |
| CN209116253U (en) * | 2018-09-27 | 2019-07-16 | 欧普照明股份有限公司 | A kind of diffuser plate and the lamps and lanterns with the diffuser plate |
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| JP2011059529A (en) * | 2009-09-11 | 2011-03-24 | Entire Technology Co Ltd | Optical member and method of manufacturing the same and backlight module |
| US10753729B2 (en) * | 2018-10-02 | 2020-08-25 | Saudi Arabian Oil Company | Photonic sensing analytical device |
| CN110717208B (en) * | 2019-09-20 | 2021-05-18 | 华中科技大学 | Multi-scale frequency response topology optimization method based on continuous gradient microstructure |
| CN111413754B (en) * | 2020-03-05 | 2021-11-02 | 武汉大学 | Element structure and design method of metasurface-based wide-angle scattering and directional scattering |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1386203A (en) * | 2000-07-31 | 2002-12-18 | 罗切斯特光电器件公司 | Structure screen for controlled spreading of light |
| CN209116253U (en) * | 2018-09-27 | 2019-07-16 | 欧普照明股份有限公司 | A kind of diffuser plate and the lamps and lanterns with the diffuser plate |
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