Cubic prism plate

Abstract

The utility model discloses a cubic prism plate which comprises a plane layer and a scattering layer. The scattering layer is fixed at the upper end of the plane layer, and a plurality of mutually connected three-dimensional prisms are arranged on the scattering layer; the stereoscopic prism is provided with a first light-transmitting part protruding upwards, and the lower end of the first light-transmitting part is provided with a second light-transmitting part used for being connected with the plane layer; the first light-transmitting part is pyramid-shaped; the upper end of the second light-transmitting part is attached to the bottom face of the first light-transmitting part, and the lower end of the second light-transmitting part covers the plane layer. Through the arrangement of the plane layer and the scattering layer, the scattering layer uniformly disperses light rays, so that the light rays become soft and uniform after being emitted to the plane layer, and the use effect of the cubic prism plate is improved; by arranging the stereoscopic prism, the plurality of first light-transmitting parts can be stably and orderly fixed on the plane layer through the second light-transmitting parts, so that the dodging effect of the stereoscopic prism is ensured, the structure of the cubic prism plate is simplified, the plane layer and the scattering layer can be quickly and stably produced, and the production cost of the cubic prism plate is reduced.

Description

Technical Field

[0001] The utility model relates to the field of light homogenizing plates, in particular to a cubic prism plate. Background Art

[0002] The cubic prism plate is formed by combining a series of small cubic lenses. Applying the cubic prism plate array to the lighting system can obtain a high light energy utilization rate and large-area uniform illumination. Therefore, the cubic prism plate has broad application prospects in the fields of micro-displays and projection displays. The key to achieving uniform illumination using the cubic prism plate array lies in improving its uniformity and illumination brightness. However, the existing light homogenizing plates have problems of complex structures and poor light homogenizing effects, which affect the production cost and use effect of the light homogenizing plates. Summary of the Invention

[0003] To solve the above problems, the purpose of the utility model is to provide a cubic prism plate to ensure the light transmission effect of the light homogenizing plate and reduce the production cost of the light homogenizing plate.

[0004] The technical solution adopted by the utility model to solve its problems is as follows:

[0005] A cubic prism plate includes a planar layer and a scattering layer; the scattering layer is fixed on the upper end of the planar layer, and a plurality of interconnected three-dimensional prisms are arranged on the scattering layer; an upwardly convex first light-transmitting portion is arranged on the three-dimensional prism, and a second light-transmitting portion for connecting the planar layer is arranged at the lower end of the first light-transmitting portion; the first light-transmitting portion is in the shape of a pyramid; the upper end of the second light-transmitting portion fits the bottom surface of the first light-transmitting portion, and the lower end of the second light-transmitting portion covers the planar layer.

[0006] The above cubic prism plate has at least the following beneficial effects: by arranging the planar layer and the scattering layer, the scattering layer evenly disperses the light, ensuring that the light becomes soft and uniform after hitting the planar layer, and improving the use effect of the cubic prism plate; by arranging the three-dimensional prisms, a plurality of first light-transmitting portions can be stably and orderly fixed on the planar layer through the second light-transmitting portions, which not only ensures the light homogenizing effect of the three-dimensional prisms but also simplifies the structure of the cubic prism plate, facilitating the rapid and stable production of the planar layer and the scattering layer, and reducing the production cost of the cubic prism plate.

[0007] Further, the cross-sectional area of the second light-transmitting portion gradually increases in the direction close to the planar layer. This structure ensures that when the light passes through the first light-transmitting portion and the second light-transmitting portion, the light energy in the entire three-dimensional prism is effectively and evenly utilized, ensuring the illumination brightness after the light passes through the scattering layer.

[0008] Furthermore, the lower end of the first light-transmitting part is an equilateral triangle, and the lower end of the second light-transmitting part is a regular hexagon. This structure ensures that the second light-transmitting part can stably support the first light-transmitting part and also ensures that the second light-transmitting part can completely cover the planar layer, enabling all light to pass through the three-dimensional prism for refraction and dispersion, thereby improving the utilization rate of light.

[0009] Furthermore, the sum of the height of the first light-transmitting part and the height of the second light-transmitting part is the first length, and the sum of the hypotenuse length of the first light-transmitting part and the hypotenuse length of the second light-transmitting part is the second length; the ratio of the first length to the second length ranges from 0.2 to 1. This structure ensures that the three-dimensional prism can divide the entire wide beam of the light source into multiple fine beams for illumination, avoiding uneven light and insufficient light intensity.

[0010] Furthermore, the first length is 0.7 mm and the second length is 1 mm. This structure ensures the height ratio between the first light-transmitting part and the second light-transmitting part, ensuring that the light entering the planar layer from the first light-transmitting part and the second light-transmitting part can be divided into multiple fine beams, improving the uniformity of light and the scattering effect of the cubic prism plate.

[0011] Furthermore, the distance between the vertex of the first light-transmitting part and the lower surface of the planar layer is 1.5 mm. This structure ensures that the total thickness of the planar layer and the scattering layer is 1.5 mm, ensuring the scattering effect of the cubic prism plate.

[0012] Furthermore, the first light-transmitting part is a regular triangular pyramid, and the apex angle of the first light-transmitting part is 90°. This structure ensures the structural strength of the first light-transmitting part, preventing the first light-transmitting part from being damaged during use or transportation, and ensuring the structural stability of the cubic prism plate.

[0013] Furthermore, the side surfaces of the first light-transmitting part and the second light-transmitting part form a square. This structure ensures the integrity of the first light-transmitting part and the second light-transmitting part, ensuring that light can enter the cubic prism plate from the side surfaces of the first light-transmitting part and the second light-transmitting part and undergo uniform and orderly scattering, improving the scattering effect of the cubic prism plate.

[0014] Furthermore, the planar layer, the first light-transmitting part, and the second light-transmitting part are integrally formed. This structure simplifies the structure and production process of the cubic prism plate and improves the integrity of the cubic prism plate.

[0015] Furthermore, both the planar layer and the scattering layer are made of polymethyl methacrylate. Polymethyl methacrylate has the advantages of strong light transmittance and easy processing. Making both the planar layer and the scattering layer of polymethyl methacrylate can effectively improve the production efficiency of the cubic prism plate and simplify the production process of the cubic prism plate.

[0016] The beneficial effects of the above cube prism plate are as follows: By providing a planar layer and a scattering layer, the scattering layer evenly disperses the light, ensuring that the light becomes soft and uniform after hitting the planar layer, and improving the usage effect of the cube prism plate; By providing a three-dimensional prism, multiple first light-transmitting parts can be stably and orderly fixed on the planar layer through the second light-transmitting parts, which not only ensures the light homogenizing effect of the three-dimensional prism but also simplifies the structure of the cube prism plate, facilitating the rapid and stable production of the planar layer and the scattering layer and reducing the production cost of the cube prism plate; The ratio of the first length to the second length ranges from 0.2 to 1, ensuring that the three-dimensional prism can divide the entire wide light beam of the light source into multiple fine light beams for illumination, avoiding uneven light and insufficient light intensity.

[0017] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a schematic structural diagram of a cube prism plate according to an embodiment of the present utility model;

[0020] Figure 2 is a partial enlarged view of a cube prism plate according to an embodiment of the present utility model;

[0021] Figure 3 is a cross-sectional view of a cube prism plate according to another embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0023] Referring to Figures 1 to 3 , an embodiment of the present utility model provides a cube prism plate, including a planar layer 100 and a scattering layer 200; the scattering layer 200 is fixed on the upper end of the planar layer 100, and a plurality of interconnected three-dimensional prisms 210 are provided on the scattering layer 200; an upwardly convex first light-transmitting part 211 is provided on the three-dimensional prism 210, and a second light-transmitting part 212 for connecting the planar layer 100 is provided at the lower end of the first light-transmitting part 211; the first light-transmitting part 211 is in the shape of a pyramid; the upper end of the second light-transmitting part 212 fits the bottom surface of the first light-transmitting part 211, and the lower end of the second light-transmitting part 212 covers the planar layer 100.

[0024] By providing the planar layer 100 and the scattering layer 200, the scattering layer 200 evenly disperses light, ensuring that the light becomes soft and uniform after hitting the planar layer 100, and improving the usage effect of the cubic prism plate; by providing the three-dimensional prism 210, multiple first light-transmitting portions 211 can be stably and orderly fixed on the planar layer 100 through the second light-transmitting portions 212, which not only ensures the light homogenizing effect of the three-dimensional prism 210, but also simplifies the structure of the cubic prism plate, facilitating the rapid and stable production of the planar layer 100 and the scattering layer 200, and reducing the production cost of the cubic prism plate.

[0025] In another embodiment, the cross-sectional area of the second light-transmitting portion 212 gradually increases in the direction close to the planar layer 100. This structure ensures that when light passes through the first light-transmitting portion 211 and the second light-transmitting portion 212, the light energy within the entire three-dimensional prism 210 is effectively and evenly utilized, ensuring the illumination brightness after the light passes through the scattering layer 200.

[0026] In another embodiment, the lower end of the first light-transmitting portion 211 is an equilateral triangle, and the lower end of the second light-transmitting portion 212 is a regular hexagon. This structure ensures that the second light-transmitting portion 212 can stably support the first light-transmitting portion 211, and also ensures that the second light-transmitting portion 212 can completely cover the planar layer 100, enabling all light to pass through the three-dimensional prism 210 for refraction and dispersion, and improving the utilization rate of light.

[0027] In another embodiment, the sum of the height of the first light-transmitting portion 211 and the height of the second light-transmitting portion 212 is the first length, and the sum of the hypotenuse length of the first light-transmitting portion 211 and the hypotenuse length of the second light-transmitting portion 212 is the second length; the ratio of the first length to the second length ranges from 0.2 to 1. This structure ensures that the three-dimensional prism 210 can divide the entire wide beam of the light source into multiple thin beams for illumination, avoiding uneven light and insufficient light intensity.

[0028] In another embodiment, the first length is 0.7 mm and the second length is 1 mm. This structure ensures the height ratio between the first light-transmitting portion 211 and the second light-transmitting portion 212, ensuring that the light entering the planar layer 100 from the first light-transmitting portion 211 and the second light-transmitting portion 212 can be divided into multiple thin beams, improving the light uniformity and the scattering effect of the cubic prism plate.

[0029] In another embodiment, the distance between the vertex of the first light-transmitting portion 211 and the lower surface of the planar layer 100 is 1.5 mm. This structure ensures that the total thickness of the planar layer 100 and the scattering layer 200 is 1.5 mm, ensuring the scattering effect of the cubic prism plate.

[0030] In another embodiment, the first light-transmitting part 211 is a regular triangular pyramid, and the apex angle of the first light-transmitting part 211 is 90°. This structure ensures the structural strength of the first light-transmitting part 211, prevents the first light-transmitting part 211 from being damaged during use or transportation, and ensures the structural stability of the cubic prism plate.

[0031] In another embodiment, the side surfaces of the first light-transmitting part 211 and the second light-transmitting part 212 form a square. This structure ensures the integrity of the first light-transmitting part 211 and the second light-transmitting part 212, ensures that light can enter the cubic prism plate from the side surfaces of the first light-transmitting part 211 and the second light-transmitting part 212, and is scattered uniformly and orderly, improving the scattering effect of the cubic prism plate.

[0032] In another embodiment, the planar layer 100, the first light-transmitting part 211, and the second light-transmitting part 212 are integrally formed. This structure simplifies the structure and production process of the cubic prism plate and improves the integrity of the cubic prism plate.

[0033] In another embodiment, both the planar layer 100 and the scattering layer 200 are made of polymethyl methacrylate. Polymethyl methacrylate has the advantages of strong light transmittance and easy processing. Both the planar layer 100 and the scattering layer 200 being made of polymethyl methacrylate can effectively improve the production efficiency of the cubic prism plate and simplify the production process of the cubic prism plate.

[0034] The working principle of the present utility model will be further described below.

[0035] During the production process, first, according to customer requirements, a drum mold with a corresponding shape and specification is selected, and the drum mold is provided with raised blocks having the same shape as the first light-transmitting part 211 and the second light-transmitting part 212; after melting the polymethyl methacrylate raw material, it is extruded onto the drum mold to press out the planar layer 100 and the scattering layer 200 with corresponding shapes and specifications; the first light-transmitting part 211 is in the shape of a pyramid, the upper end of the connecting part 212 is arc-shaped, the upper end of the second light-transmitting part 212 fits the bottom surface of the first light-transmitting part 211, and the lower end of the second light-transmitting part 212 covers the planar layer 100; at the same time, the lower end of the first light-transmitting part 211 is a regular triangle, and the lower end of the second light-transmitting part 212 is a regular hexagon, so that the interconnected three-dimensional prism 210 can be completely separated from the drum mold after molding, and the distance between the apex of the first light-transmitting part 211 and the lower surface of the planar layer 100 is 1.5 mm, which not only ensures the thickness of the cubic prism plate, guarantees the integrity of the scattering layer 200, but also improves the production efficiency and the yield rate of the cubic prism plate.

[0036] During use, two cube prism plates are arranged below the light source at a certain distance, and the planar layers 100 of the two cube prism plates face each other. The light perpendicular to the planar layer 100 first passes through the three-dimensional prism 210 on the front cube prism plate and then is focused at the center of the three-dimensional prism 210 on the rear cube prism plate. At this time, after passing through the three-dimensional prism 210 of the front cube prism plate, the light forms multiple light source images to illuminate the rear cube prism plate. Each three-dimensional prism 210 of the rear cube prism plate overlaps and images the light passing through the first light-transmitting part 211 on the cube prism plate below the rear cube prism plate. Since the front cube prism plate divides the entire wide beam of light into multiple thin beams for illumination, and due to the mutual superposition of the thin beams in symmetric positions, the vertical non-uniformity of the thin beams is compensated, so that the light energy of the light source is effectively and evenly utilized. The light spot emerging from the rear cube prism plate is focused below the two cube prism plates through the three-dimensional prism 210, so that each point of the formed light spot is irradiated by the light emitted from all points of the light source. At the same time, after passing through the front cube prism plate and the rear cube prism plate, the light beams emitted from each point on the light source intersect and overlap within the same field of view on the illumination light spot, forming a uniform square light spot below. At the same time, since the side surface of the first light-transmitting part 211 and the side surface of the second light-transmitting part 212 form a square. Specifically, the sum of the height of the first light-transmitting part 211 and the height of the second light-transmitting part 212 is 0.7 mm, and the sum of the hypotenuse lengths of the first light-transmitting part 211 and the second light-transmitting part 212 is 1 mm, so that the light can be evenly and orderly refracted to the second light-transmitting part 212 after entering the first light-transmitting part 211, and then transmitted outward through the planar layer 100, improving the uniformity of the light and the scattering effect of the cube prism plate.

[0037] As can be seen from the above description, the cube prism plate of the present invention, by providing the planar layer 100 and the scattering layer 200, the scattering layer 200 evenly disperses the light, ensuring that the light becomes soft and uniform after hitting the planar layer 100, and improving the use effect of the cube prism plate; by providing the three-dimensional prism 210, multiple first light-transmitting parts 211 can be stably and orderly fixed on the planar layer 100 through the second light-transmitting parts 212, which not only ensures the light homogenizing effect of the three-dimensional prism 210, but also simplifies the structure of the cube prism plate, facilitating the rapid and stable production of the planar layer 100 and the scattering layer 200, and reducing the production cost of the cube prism plate; the ratio of the first length to the second length ranges from 0.2 to 1, ensuring that the three-dimensional prism 210 can divide the entire wide beam of the light source into multiple thin beams for illumination, avoiding the occurrence of uneven light and insufficient light intensity.

[0038] The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited to the above embodiments, and various changes can be made without departing from the gist of the present utility model within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. A cubic prism plate, characterized in that: It comprises a plane layer and a scattering layer; the scattering layer is fixed on the upper end of the plane layer, and a plurality of mutually connected three-dimensional prisms are arranged on the scattering layer; a first light-transmitting portion convex upward is arranged on the three-dimensional prism, and a second light-transmitting portion for connecting the plane layer is arranged at the lower end of the first light-transmitting portion; the first light-transmitting portion is in the form of a pyramid; the upper end of the second light-transmitting portion is in contact with the bottom surface of the first light-transmitting portion, and the lower end of the second light-transmitting portion covers the plane layer.

2. The cubic prism plate according to claim 1, characterized in that: The cross-sectional area of ​​the second light-transmitting portion gradually increases along a direction approaching the planar layer.

3. The cubic prism plate according to claim 2, characterized in that: The lower end of the first light-transmitting portion is in the shape of an equilateral triangle, and the lower end of the second light-transmitting portion is in the shape of a regular hexagon.

4. The cubic prism plate according to claim 3, characterized in that: The sum of the height of the first light-transmitting portion and the height of the second light-transmitting portion is a first length, and the sum of the hypotenuse length of the first light-transmitting portion and the hypotenuse length of the second light-transmitting portion is a second length; the ratio of the first length to the second length is between 0.2 and 1.

5. The cubic prism plate according to claim 4, characterized in that: The first length is 0.7 mm, and the second length is 1 mm.

6. The cubic prism plate according to claim 1, characterized in that: The distance between the vertex of the first light-transmitting portion and the lower surface of the planar layer is 1.5 mm.

7. The cubic prism plate according to claim 1, characterized in that: The first light-transmitting portion is a regular triangular pyramid, and the vertex angle of the first light-transmitting portion is 90°.

8. The cubic prism plate according to claim 7, characterized in that: The side surface of the first light-transmitting portion and the side surface of the second light-transmitting portion form a square.

9. The cubic prism plate according to claim 1, characterized in that: The planar layer, the first light-transmitting portion and the second light-transmitting portion are integrally formed.

10. The cubic prism plate according to claim 9, characterized in that: The planar layer and the scattering layer are both made of polymethyl methacrylate.

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