A microstructure arrangement method and a diffusion plate

Abstract

The embodiment of the present application provides a microstructure arrangement method and a diffuser plate, which relates to the field of optical element design technology, to solve the problem that a frosted surface is set on an optical element, and the frosted surface makes the optical effect of the optical element unstable. The microstructure arrangement method includes: constructing a plurality of first sample points on a reference surface based on a preset arrangement method; constructing a closed figure respectively with each of the first sample points as a reference point; randomly obtaining a second sample point in each of the closed figures; and arranging the microstructure on the surface of the microstructure to be arranged based on the obtained second sample point.

Description

Technical Field

[0001] The present application relates to the technical field of optical element design, and in particular to a microstructure arrangement method and a diffusion plate. Background Art

[0002] In the design process of optical elements, it is often necessary to set a frosted surface for the optical element. In the related art, a frosted surface is generally processed by a frosting process. When a frosted surface is processed by a frosting process, there is a problem of unstable structure of the frosted surface. For example, for two optical elements provided with frosted surfaces, if the frosted surface processing effect of one optical element is better and the frosted surface processing effect of the other optical element is worse, the two optical elements will present different optical effects. As can be seen, when a frosted surface is set on an optical element, the frosted surface will make the optical effect of the optical element unstable. Summary of the invention

[0003] The embodiments of the present application provide a microstructure arrangement method and a diffuser plate to solve the problem that a frosted surface is provided on an optical element, and the frosted surface may make the optical effect of the optical element unstable.

[0004] In a first aspect, an embodiment of the present application provides a microstructure arrangement method.

[0005] The microstructure arrangement method provided in the embodiment of the present application includes:

[0006] Based on the preset arrangement, multiple first sample points are constructed on the reference surface;

[0007] Taking each of the first sample points as a reference point, respectively construct a closed figure;

[0008] Randomly acquiring a second sample point in each of the closed figures;

[0009] Based on the obtained second sample points, microstructures are arranged on the surface of the microstructures to be arranged.

[0010] Optionally, the preset arrangement is a Fibonacci series arrangement.

[0011] Optionally, the preset arrangement is an array arrangement.

[0012] Optionally, constructing a plurality of first sample points on the reference surface includes: constructing a plurality of first sample points on the reference surface with a target density.

[0013] Optionally, the closed graph constructed is a Thiessen polygon.

[0014] Optionally, all the closed figures constructed have the same shape.

[0015] Optionally, the closed figure is a circle, the sizes of the closed figures are all equal, and the first sample point is the center of the closed figure.

[0016] Optionally, randomly acquiring a second sample point in each of the closed figures includes: in each of the closed figures, using the first sample point corresponding to the closed figure as an offset point, offsetting the offset point with a target direction and a target distance, wherein the offset point after offset is located in the closed figure; and using the offset point after offset as the second sample point.

[0017] Optionally, arranging the microstructure on the surface of the microstructure to be arranged based on the acquired second sample points includes: mapping each of the second sample points 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 microstructure on the surface of the microstructure to be arranged in a one-to-one correspondence with the third sample point as a reference point.

[0018] Optionally, the reference surface is a surface on which microstructures are to be arranged.

[0019] In a second aspect, an embodiment of the present application provides a diffuser plate.

[0020] The diffuser plate provided in the embodiment of the present application comprises a light incident surface and a light emitting surface, and a microstructure is arranged on at least one of the light incident surface and the light emitting surface according to any one of the microstructure arrangement methods provided in the first aspect.

[0021] At least one of the above technical solutions adopted in the embodiments of the present application can achieve the following beneficial effects:

[0022] In the embodiments of the present application, a microstructure can be constructed on a three-dimensional model of an optical element based on a microstructure arrangement method, and a physical optical element can be processed based on the three-dimensional model of the optical element having the microstructure, so that the physical optical element can be basically consistent with the three-dimensional model of the optical element. Furthermore, the microstructures of the processed optical elements can be basically consistent, thereby solving the problem of unstable optical effects of the frosted surface of the optical element caused by the unstable structure of the frosted surface.

[0023] In addition, in the embodiments of the present application, the arrangement of the first sample points can be made more regular, and by randomly acquiring the second sample points in the closed figure constructed based on the first sample points, the second sample points can have a certain degree of discreteness based on the first sample points. In this way, the second sample points can be made neither too random nor too regular. Thus, the microstructure arranged based on the arrangement of the second sample points can be made neither too random nor too regular, and the optical element can have a better optical effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 A flow chart of a microstructure arrangement method provided in an embodiment of the present application;

[0026] Figure 2 A schematic diagram of the arrangement of a first sample point provided in an embodiment of the present application;

[0027] Figure 3 A schematic diagram of another arrangement of first sample points provided in an embodiment of the present application;

[0028] Figure 4 A schematic diagram of the arrangement of a second sample point provided in an embodiment of the present application. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0030] Although the terms used in this application are selected from well-known and commonly used terms, some of the terms mentioned in this application specification may be selected by the applicant at his or her discretion, and their detailed meanings are explained in the relevant parts of the description of this article. In addition, it is required to understand this application not only by the actual terms used, but also by the meaning implied by each term.

[0031] The technical solutions provided by various embodiments of the present application are described in detail below in conjunction with the accompanying drawings.

[0032] The present application embodiment provides a microstructure arrangement method. Figure 1 , the microstructure arrangement method provided in the embodiment of the present application may include:

[0033] Step 110: construct a plurality of first sample points on the reference surface based on a preset arrangement.

[0034] In the embodiment of the present application, the preset arrangement mode may be a standard arrangement mode. Figure 2 For example, the preset arrangement can be a Fibonacci number series arrangement. Thus, in the embodiment of the present application, a plurality of first sample points 220 can be constructed on the reference surface 210 based on the Fibonacci number series arrangement.

[0035] refer to Figure 3 In the embodiment of the present application, the preset arrangement mode may be an array arrangement mode. Exemplarily, the preset arrangement mode may be a rectangular array arrangement mode. Thus, in the embodiment of the present application, a plurality of first sample points 220 may be constructed on the reference surface 210 based on the array arrangement mode. In the embodiment of the present application, a plurality of first sample points may also be constructed on the reference surface by other arrangement modes, which are not listed here one by one.

[0036] It should be noted that, in the embodiments of the present application, the reference surface may be the surface of the microstructure to be arranged, or the reference surface may be a surface constructed based on the surface of the microstructure to be arranged. In the case where the reference surface is a surface 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 surface. That is, the area of ​​the reference surface may be larger than the surface of the microstructure to be arranged.

[0037] It should also be noted that, in an embodiment of the present application, constructing a plurality of first sample points on a reference surface includes: constructing a plurality of first sample points on the reference surface with a target density. Exemplarily, the density of the first sample points can be controlled by adjusting the number of the constructed first sample points. For example, 2000 first sample points can be constructed on the reference surface, or 4000 first sample points can be constructed on the reference surface, so that the density of the first sample points can be controlled by adjusting the number of the constructed first sample points. In an embodiment of the present application, the density of the first sample points can also be controlled by other methods, which are not listed here one by one.

[0038] Step 120, using each first sample point as a reference point, respectively construct a closed figure.

[0039] In an embodiment of the present application, after constructing the first sample point, a closed figure can be constructed with each first sample point as a reference point. In an embodiment of the present application, the constructed closed figure can be a Thiessen polygon. It should be noted that the Thiessen polygon is also called a von Lonoy diagram, and the Thiessen polygon is a set of continuous polygons composed of perpendicular bisectors connecting two adjacent point segments. The distance from any point in a Thiessen polygon to the control point constituting the polygon is less than the distance to the control point of other polygons.

[0040] In the embodiment of the present application, the shape of each closed figure can also be the same, for example, each closed figure can be a triangle, a circle or a rectangle.

[0041] In the embodiment of the present application, the size of each closed figure can also be made equal. For example, the constructed closed figures can all be squares with a side length of 1 mm.

[0042] For example, in an embodiment of the present application, the closed figure may be a circle, and the first point may be the center of the closed figure, so that the difficulty of constructing the closed figure can be reduced.

[0043] It should be noted that, in the embodiments of the present application, the first sample point can be located at the center of the closed figure, can be located inside the closed figure, or can be located at other positions of the closed figure. For example, in the embodiments of the present application, the closed figure can be a rectangle, and the first sample point can be located at the center of the rectangle, can be at any vertex of the rectangle, or can be located at other positions of the rectangle. They are not listed here one by one.

[0044] Step 130: randomly obtain a second sample point in each closed figure.

[0045] In the embodiment of the present application, after the closed figures are constructed, a second sample point can be randomly obtained in each closed figure. It should be noted that in the embodiment of the present application, adjacent closed figures may not overlap. In this way, the distribution of the second sample points can be relatively uniform. Of course, in other embodiments of the present application, adjacent closed figures may also have overlapping areas, which will not be described in detail here.

[0046] Optionally, in an embodiment of the present application, within each closed figure, the first sample point corresponding to the closed figure can be used as an offset point, and the offset point can be offset by the target direction and the target distance, wherein the offset point after the offset is located within the closed figure; the offset point after the offset can be used as the second sample point. In this way, by offsetting the offset point by the target direction and the target distance, the distribution of the second sample point can be made more uniform.

[0047] Exemplarily, in an embodiment of the present application, when the closed figure is a circle and the first sample point is the center of the closed figure, randomly obtaining a second sample point in each closed figure includes: in each closed figure, using the first sample point corresponding to the closed figure as an offset point, offsetting the offset point with a target direction and a target distance, wherein the target distance is less than the radius of the closed figure; and using the offset point after offset as the second sample point.

[0048] In the embodiment of the present application, the target direction and the target distance can be randomly selected by a corresponding random number generation algorithm, and the target distance only needs to be smaller than the radius of the closed figure. For example, the closed figure can be a circle with a radius of 1 mm, the target direction can be 15 degrees upward from the right side of the first sample point, and the target distance can be 0.8 mm.

[0049] It should be noted that in other embodiments of the present application, a random number generation algorithm may be used to randomly obtain the second sample point in the closed graph. Specifically, a random number generation algorithm in the prior art may be selected. This will not be described in detail here.

[0050] Step 140 , arranging microstructures on the surface where the microstructures are to be arranged based on the acquired second sample points.

[0051] In an embodiment of the present application, after obtaining the second sample point, the microstructure can be arranged on the surface of the microstructure to be arranged based on the obtained second sample point. In an embodiment of the present application, the second sample point can be used to replace the first sample point. Thus, the microstructure can be arranged according to the arrangement method of the second sample point.

[0052] refer to Figure 4 In an embodiment of the present application, when the preset arrangement method is a Fibonacci series arrangement method 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. In this way, the microstructure can be arranged on the surface of the microstructure to be arranged with the second sample point 230 as the reference point.

[0053] In the embodiment of the present application, since the first sample points 220 are arranged in a preset arrangement manner, the arrangement of the first sample points 220 can be made relatively regular, and by randomly acquiring the second sample points 230 in the closed figure constructed based on the first sample points 220, the second sample points 230 can have a certain degree of discreteness relative to the first sample points 220. In this way, the arrangement of the second sample points 230 can be neither too random nor too regular.

[0054] In the embodiment of the present application, when 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 where the second sample point is mapped to the surface of the microstructure to be arranged; further, the microstructure can 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 this way, the microstructure can be arranged according to the arrangement method of the third sample point.

[0055] It should be noted that, illustratively, in an embodiment of the present application, a third sample point can 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 microstructure can 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 an embodiment of the present application, the shape and size of each microstructure can be the same, so that it is convenient to process the microstructure. Of course, in other embodiments of the present application, the shape and size of each microstructure can also be different, which will not be explained here.

[0056] It should also be noted that, in the embodiments of the present application, the microstructure may refer to a fine protrusion or fine depression arranged on the surface of the microstructure to be arranged. After the microstructure is arranged on the surface of the microstructure to be arranged, the surface of the microstructure to be arranged can be made uneven, so that the microstructure can be used to refract or reflect light, so that the microstructure to be arranged presents a special optical effect. Exemplarily, the microstructure may be a protrusion or depression in the shape of a hemispherical, triangular prism, or quadrangular prism. Exemplarily, in the case where the microstructure is hemispherical, the center of the microstructure may be located at the second sample point. In addition, in the embodiments of the present application, the microstructure may also be other protruding structures, and the top surface of the microstructure may be a concave surface or a convex surface.

[0057] In the embodiments of the present application, a microstructure can be constructed on a three-dimensional model of an optical element based on a microstructure arrangement method, and a physical object of the optical element can be processed based on the three-dimensional model of the optical element having the microstructure. In this way, the physical object of the optical element can be made substantially consistent with the three-dimensional model of the optical element. Furthermore, the microstructures of the processed optical elements can be made substantially consistent, thereby solving the problem of unstable optical effects of the frosted surface of the optical element caused by the unstable structure of the frosted surface.

[0058] It should be noted that in the embodiments of the present application, the density of the first sample points can be adjusted by adjusting the number of the first sample points, thereby indirectly adjusting the density of the second sample points. The discreteness of the second sample points can be adjusted by adjusting the size of the closed figure. In the embodiments of the present application, different microstructure arrangements can be constructed by adjusting the density and discreteness of the second sample points. Thus, different microstructure arrangements and microstructure forms can be optically simulated, and the optical effect of the microstructure can be made basically consistent with the optical effect of the frosted surface, so that the frosted surface can be replaced by the microstructure.

[0059] It should also 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 second sample points will be unevenly spaced. As a result, the microstructure will be deformed, causing the originally sparsely arranged areas to be even more sparse, and even causing some areas to have no microstructures, which will result in poor optical effects of the optical element. By adopting the solution provided in the embodiment of the present application, the arrangement of the first sample points 220 can be made more regular. By randomly obtaining the second sample points 230 in the closed figure constructed based on the first sample points 220, the second sample points 230 can have a certain degree of discreteness on the basis of the first sample points 220, so that the second sample points 230 are not too random or too regular. As a result, the microstructure arranged based on the arrangement of the second sample points 230 is not too random or too regular, and the optical element can have a better optical effect.

[0060] The embodiment of the present application further provides a diffuser plate. The diffuser plate provided in the embodiment of the present application includes a light incident surface and a light emitting surface, wherein at least one of the light incident surface and the light emitting surface is arranged with a microstructure according to any one of the microstructure arrangement methods provided in the embodiment of the present application.

[0061] In this way, in the embodiment of the present application, a microstructure can be constructed on the three-dimensional model of the diffuser plate based on the microstructure arrangement method, and a real diffuser plate can be processed based on the three-dimensional model of the diffuser plate with the microstructure, so that the real diffuser plate can be basically consistent with the three-dimensional model of the diffuser plate. Furthermore, the microstructures of the processed diffusers can be basically consistent, thereby solving the problem of unstable optical effect of the frosted surface of the diffuser plate caused by the unstable structure of the frosted surface.

[0062] In addition, in the embodiment of the present application, the arrangement of the first sample points can be made more regular. By randomly obtaining the second sample points in the closed figure constructed based on the first sample points, the second sample points can have a certain degree of discreteness based on the first sample points. In this way, the second sample points can be neither too random nor too regular. Thus, the microstructure arranged based on the arrangement of the second sample points can be neither too random nor too regular. Thus, the diffuser can have a better optical effect.

[0063] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0064] Although the 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 variations may be made to the embodiments without departing from the principles and spirit of the embodiments of the present application, and the scope of the embodiments of the present application is defined by the appended claims and their equivalents.

Claims

1. A microstructure arrangement method, characterized in that: include: Based on the preset arrangement, multiple first sample points are constructed on the reference surface; Taking each of the first sample points as a reference point, a closed figure is constructed respectively, wherein the closed figure is a circle, the sizes of the closed figures are all equal, and the first sample point is the center of the closed figure; Randomly acquiring a second sample point in each of the closed figures; Based on the obtained second sample points, microstructures are arranged on the surface where the microstructures are to be arranged.

2. The microstructure arrangement method according to claim 1, characterized in that: The preset arrangement method is a Fibonacci series arrangement method or an array arrangement method.

3. The microstructure arrangement method according to claim 1, characterized in that: The constructing a plurality of first sample points on the reference surface comprises: constructing a plurality of first sample points on the reference surface at a target density.

4. The microstructure arrangement method according to claim 1, characterized in that: The randomly acquiring a second sample point in each of the closed figures comprises: In each of the closed figures, the first sample point corresponding to the closed figure is used as an offset point, and the offset point is offset according to a target direction and a target distance, wherein the offset point after the offset is located in the closed figure; and the offset point after the offset is used as the second sample point.

5. The microstructure arrangement method according to claim 1, characterized in that: Arranging the microstructure on the surface of the microstructure to be arranged based on the obtained second sample point includes: Map each of the second sample points to the surface of the microstructure to be arranged; construct a third sample point at the position where the second sample point is mapped to the surface of the microstructure to be arranged; and arrange the microstructures on the surface of the microstructure to be arranged in a one-to-one correspondence using the third sample point as a reference point.

6. The microstructure arrangement method according to claim 1, characterized in that: The reference surface is the surface on which the microstructures are to be arranged.

7. A diffuser plate, characterized in that: The diffuser plate comprises a light incident surface and a light emitting surface, and a microstructure is arranged on at least one of the light incident surface and the light emitting surface according to the microstructure arrangement method according to any one of claims 1 to 6.

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