Light distribution member

Abstract

The utility model relates to a light distribution part. The light distribution piece comprises a base body and a plurality of micro lenses, the base body is provided with a first surface and a second surface, and the micro lenses are arranged on the second surface. The first surface is obliquely arranged relative to the horizontal plane and used for deflecting normal light rays perpendicular to the horizontal plane to form first refracted light rays. The second surface is obliquely arranged relative to the horizontal plane and used for allowing the first refracted light to be perpendicularly emitted out to form emergent light or further deflecting the first refracted light towards the same side to form second refracted light. According to the light distribution piece, the first surface and the second surface which are inclined are arranged, the normal light rays perpendicular to the horizontal plane are deflected to form the emergent light rays or the second refracted light rays, deflection light emitting of the normal light rays is achieved, in other words, polarized light irradiation of light emitting of the optical axis is achieved, and the application scene of polarized light irradiation of light emitting of the optical axis can be met.

Description

Technical Field

[0001] This application relates to the field of optical element technology, and in particular to a light distribution component. Background Technology

[0002] Traditional lens plates have two opposing surfaces, one of which is a horizontal incident light surface, and the other is a freeform surface. This freeform surface can be designed according to the desired light effect, for example, it can contain multiple convex surfaces. When this lens plate processes the light emitted by an LED light source, the light emitted from the LED light source is perpendicular to the horizontal incident light surface and exits through the freeform surface. At this time, the main part of the light emitted from the optical axis still propagates along the optical axis direction, which cannot meet the application scenarios of optical axis polarized illumination. Summary of the Invention

[0003] Therefore, it is necessary to provide a light distribution component to address the problem that traditional lens plates cannot change the propagation direction of the main part emitting light along the optical axis and are therefore unsuitable for polarized light illumination.

[0004] A light distribution element, comprising:

[0005] A substrate having a first surface and a second surface; and

[0006] Multiple microlenses are disposed on the second surface;

[0007] The first surface is inclined relative to the horizontal plane to deflect the normal light rays perpendicular to the horizontal plane, thereby forming a first refracted ray; the second surface is inclined relative to the horizontal plane to allow the first refracted ray to be emitted perpendicularly to form an outgoing ray or to further deflect the first refracted ray to the same side to form a second refracted ray.

[0008] In one embodiment, the second surface is configured such that the emitted light or the second refracted light is perpendicularly incident on the light-incident surface of the target structure.

[0009] In one embodiment, the tilt angle θ1 of the first surface relative to the horizontal plane is greater than the tilt angle θ2 of the second surface.

[0010] In one embodiment, the first surface and the second surface extend in the same direction and intersect each other, and the direction of extension of the first surface and the second surface is opposite to the direction of deflection of the normal light ray.

[0011] In one embodiment, the substrate further has a side surface connected between the first surface and the second surface; the side surface includes two opposing trapezoidal surfaces and two opposing square surfaces, the trapezoidal surfaces being connected to the square surfaces, the trapezoidal surfaces having acute base angles and obtuse base angles, the acute base angles being formed by the first surface and the base edge, and the obtuse base angles being formed by the second surface and the base edge.

[0012] In one embodiment, the light distribution element is an integral structure.

[0013] In one embodiment, the plurality of microlenses are arranged in an array, adjacent microlenses are connected, and the orthographic projection of each microlens onto the second surface is a parallelogram.

[0014] In one embodiment, the plurality of microlenses are arranged in a rectangular array having a length direction and a width direction, the orthographic projection is rectangular, the long side of the orthographic projection is located in the length direction, and the short side of the orthographic projection is located in the width direction.

[0015] A light distribution element, comprising:

[0016] A substrate having a first surface and a second surface; and

[0017] Multiple microlenses are disposed on the second surface;

[0018] The first surface is inclined relative to the horizontal plane to deflect the normal light rays perpendicular to the horizontal plane, thereby forming a first refracted ray; the second surface is horizontal to further deflect the first refracted ray towards the same side, thereby forming a second refracted ray.

[0019] In one embodiment, the second surface is configured such that the second refracted light rays irradiate the incident surface of the target structure perpendicularly; the plurality of microlenses are arranged in an array, adjacent microlenses are connected, and the orthographic projection of each microlens on the second surface is a parallelogram.

[0020] The aforementioned light distribution component, by setting an inclined first surface and a second surface, or an inclined first surface and a horizontal second surface, allows the first surface to deflect the normal light rays perpendicular to the horizontal plane to form a first refracted light ray. The second surface allows the first refracted light rays to be emitted perpendicularly to form an outgoing light ray, or it can further deflect the first refracted light rays to the same side to form a second refracted light ray. This achieves the deflection and emission of the normal light rays, that is, it achieves polarized irradiation of light emitting from the optical axis, which can meet the application scenarios of polarized irradiation of light emitting from the optical axis.

[0021] Furthermore, compared to the traditional technology where the lateral emission of the LED light source illuminates the target structure after passing through the lens plate, since the luminous intensity of the normal emission of the LED light source is higher than that of its lateral emission, after the first and second surfaces of the light distribution component are treated to emit the normal emission of the LED light source, the outgoing light rays or the second refracted light rays emitted from the second surface can be perpendicularly irradiated onto the incident light surface of the target structure, thus significantly improving the illumination brightness of the target structure. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the light distribution element in the first embodiment of this application.

[0023] Figure 2 for Figure 1 Side view of the light distribution component.

[0024] Figure 3 for Figure 1 Schematic diagram of the light distribution component.

[0025] Figure 4 for Figure 1 Orthographic projection of the microlens of the light distribution component onto the second surface.

[0026] Figure 5 This is a schematic diagram of the light distribution element in the second embodiment of this application.

[0027] Figure 6 This is a schematic diagram of the structure of the light distribution element in the third embodiment of this application.

[0028] Figure 7 for Figure 6 Schematic diagram of the light distribution component.

[0029] Explanation of reference numerals in the attached figures:

[0030] 100 - Light distribution element; 110 - Substrate; 111 - First surface; 112 - Second surface; 113 - Side surface; 114 - Trapezoidal surface; 120 - Microlens; 122 - Orthographic projection; 124 - Long side; 126 - Short side; 200 - Target structure; P - Horizontal plane; L1 - First refracted ray; L2 - Second refracted ray. Detailed Implementation

[0031] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0032] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0033] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0034] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0036] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0037] It should be noted that the light distribution component in this application is based on... Figure 2 , Figure 3 , Figure 5 as well as Figure 7 The orientation of the light distribution element is defined with the horizontal plane P as the reference, and the tilting of its first and / or second surfaces is also relative to the horizontal plane P. However, this definition is only for the convenience of describing the structure of the light distribution element and does not constitute a substantial limitation on the scope of protection of this application.

[0038] Please see Figures 1 to 3 , Figure 1 A schematic diagram of the light distribution element in the first embodiment of this application is shown. Figure 2 It shows Figure 1 Side view of the central light distribution component. Figure 3 It shows Figure 1 The schematic diagram of the light distribution component is shown in the first embodiment of this application. The light distribution component 100 includes a substrate 110 and a plurality of microlenses 120. The substrate 110 has a first surface 111 and a second surface 112, and the plurality of microlenses 120 are disposed on the second surface 112. The first surface 111 is inclined relative to the horizontal plane P and is used to deflect the normal light rays perpendicular to the horizontal plane P to form a first refracted light ray L1. The second surface 112 is inclined relative to the horizontal plane P and is used to further deflect the first refracted light ray L1 to the same side to form a second refracted light ray L2.

[0039] By setting a first surface 111 and a second surface 112 that are both inclined, the first surface 111 can deflect the normal light rays perpendicular to the horizontal plane P to form a first refracted light ray L1, and the second surface 112 can further deflect the first refracted light ray L1 to the same side to form a second refracted light ray L2. This achieves the deflection of the normal light rays to produce light, that is, it achieves the polarized illumination of the optical axis, which can meet the application scenarios of optical axis polarized illumination.

[0040] It should be noted that the light distribution element 100 is mainly used for polarizing the emission of Lambertian light sources, but is not limited to this type of light source. The Lambertian light source can be, but is not limited to, an LED light source. Furthermore, the normal rays include those emitted along the optical axis and those emitted parallel to the optical axis of the LED light source. The microlens 120 can scatter a small portion of the bundled second refracted ray L2, while the main body of the bundled second refracted ray L2 will still pass through the microlens 120 in its original direction.

[0041] The second surface 112 is configured such that the second refracted ray L2 is perpendicularly incident on the light-incident surface of the target structure 200. That is, the irradiation direction of the second refracted ray L2 is perpendicular to the light-incident surface of the target structure 200. Compared with the conventional technology where the side emission of the LED light source is irradiated to the target structure after passing through the lens plate, since the luminous intensity of the normal emission of the LED light source is higher than that of its side emission, after the first surface 111 and the second surface 112 of the light distribution member 100 process the normal emission of the LED light source, the second refracted ray L2 emitted from the second surface 112 can be perpendicularly incident on the light-incident surface of the target structure 200, thus significantly improving the illumination brightness of the target structure 200.

[0042] It should be noted that the target structure 200 can be an object to be illuminated or a light-transmitting structure, such as a display panel. The light distribution element 100 can handle the emission of LED light source to provide backlight for the display panel. When the observer's viewing angle is perpendicular to the display panel, the second refracted light rays perpendicularly incident on the target structure can all enter the observer's viewing angle range, thereby improving the display effect of the display panel. The display panel can be, but is not limited to, a TFT display panel. The aforementioned "perpendicular" should be understood as substantially perpendicular or generally perpendicular, and is not limited to perpendicular in the strict sense (an angle of 90°). Moreover, the second refracted light ray L2 is not limited to perpendicularly incident on the display panel, and can fluctuate by ±10° based on the direction perpendicular to the display panel.

[0043] Relative to the horizontal plane P, the tilt angle θ1 of the first surface 111 is greater than the tilt angle θ2 of the second surface 112. After the normal ray is deflected twice by the first surface 111 and the second surface 112, its final deflection angle is larger. The tilt of the first surface 111 and / or the second surface 112 can be flexibly adjusted according to the required final deflection angle to meet the requirements of different deflection angles.

[0044] The tilt angles θ1 of the first surface 111 and θ2 of the second surface 112 are not specifically limited in this application, and can be determined by the tilt angle of the target structure 200 relative to the horizontal plane P. For example, the tilt angle θ1 of the first surface 111 can be 14°, the tilt angle θ2 of the second surface 112 can be 8°, and the tilt angle of the target structure 200 relative to the horizontal plane P can be 14°. Obviously, the above angle values ​​are exemplary and not restrictive, and can be adjusted according to actual needs.

[0045] The first surface 111 and the second surface 112 extend in the same direction and intersect, and the extending directions of the first surface 111 and the second surface 112 are opposite to the deflection direction of the normal ray. For example... Figure 3 As shown, the first surface 111 and the second surface 112 extend to the right and intersect, while the normal rays are deflected to the left. Both the first surface 111 and the second surface 112 can be regarded as being inclined upward relative to the horizontal plane P, and the inclination of the first surface 111 is greater than that of the second surface 112, so that the first surface 111 and the second surface 112 can extend to the right and intersect.

[0046] In other words, among the multiple sides 113 of the substrate 110, there are trapezoidal sides 113, and the two sides of the trapezoidal side 113 can extend and intersect at the top. Specifically, the sides 113 of the substrate 110 are connected between the first surface 111 and the second surface 112. The side 113 includes two opposing trapezoidal surfaces 114 and two opposing square surfaces (not labeled), the trapezoidal surfaces 114 are connected to the square surfaces, and the trapezoidal surfaces 114 have acute and obtuse base angles, the acute base angle is formed by the first surface 111 and the base edge, and the obtuse base angle is formed by the second surface 112 and the base edge.

[0047] Either the first surface 111 or the second surface 112 can be configured as a plane or a concave curved surface. The concave curved surface is a slightly concave surface, but it is still inclined overall. In this embodiment, both the first surface 111 and the second surface 112 are configured as planes. The planar second surface 112 helps to reduce the processing difficulty of the microlens 120. In other embodiments, the first surface 111 can be a concave curved surface, which helps to improve the deflection effect of the first surface 111 on the incident light, while the second surface 112 is a plane.

[0048] Please see Figure 4 , Figure 4 This diagram shows an orthographic projection of the microlens of the light distributor on the second surface in this embodiment, along with... Figure 1Multiple microlenses 120 are arranged in an array, with adjacent microlenses 120 connected together. Each microlens 120 can scatter a small portion of the second refracted light beam L2 and the lateral emission from the light source, thereby improving the light mixing effect between adjacent microlenses 120 and making the light output of the light distribution element 100 more uniform and brighter. It is understood that in other embodiments, the multiple microlenses 120 may be arranged in other regular shapes or irregularly, with adjacent microlenses 120 connected to or spaced apart from each other.

[0049] The arrayed microlenses 120 occupy an area on the second surface 112 surrounded by blank edge regions (not labeled). Each microlens 120 protrudes from the second surface 112, and its light-emitting surface is a convex curved surface. The blank edge regions on the second surface 112 meet assembly requirements, allowing the light distributor 100 to be mounted on the mounting structure through these regions. In an alternative embodiment, the arrayed microlenses 120 may cover the entire second surface 112, and the side of the light distributor 100 may serve as a mounting surface for mounting the light distributor 100.

[0050] Each microlens 120 has a parallelogram-shaped orthographic projection 122 on the second surface 112, allowing for seamless splicing between adjacent microlenses 120. This increases the number of microlenses 120 per unit area, further enhancing the light scattering effect and improving the light mixing effect between adjacent microlenses 120, resulting in more uniform overall light distribution and higher brightness. It should be noted that the orthographic projection 122 of the microlens 120 on the second surface 112 is the projection formed on the second surface 112 by light rays perpendicular to the second surface 112 striking the microlens 120.

[0051] Furthermore, the multiple microlenses 120 are arranged in a rectangular array with both length and width directions. The orthographic projection 122 of each microlens 120 is rectangular, with the long side 124 of the orthographic projection 122 located in the length direction and the short side 126 located in the width direction. Each microlens 120 can scatter more light in the length direction, and the emitted light is more divergent. The emitted light between adjacent microlenses 120 is fully mixed, and the total internal reflection effect of each microlens 120 in the length direction is enhanced, thereby increasing the amount of light propagating along the length inside the light distribution element 100, significantly improving the overall brightness of the light distribution element 100, and further improving the polarized illumination brightness of the target structure 200. In other embodiments, the multiple microlenses 120 can also be arranged in a ring array or a square array, and the orthographic projection 122 of each microlens 120 on the second surface 112 can be square, rhomboid, or other parallelograms.

[0052] Please combine Figure 1The light distribution element 100 is a one-piece structure, meaning the substrate 110 and multiple microlenses 120 can be integrally molded. Compared to separate structures, it eliminates the need for assembly, resulting in high production efficiency. The light distribution element 100 can be formed by injection molding, 3D printing, or cutting. The material of the light distribution element 100 can be, but is not limited to, polymethyl methacrylate (PMMA), polycarbonate (PC), or silicone. When the material of the light distribution element 100 is PMMA or PC, it exhibits good impact resistance and optical performance.

[0053] The substrate 110 has a plate-like structure with a relatively large thickness; alternatively, the substrate 110 may have a sheet-like structure with a relatively small thickness. The specific arrangement of the multiple microlenses 120 depends on the shape of the target structure 200. A square array of microlenses 120 is used to adapt to a square target structure 200. When the target structure 200 is circular, the array of microlenses 120 is circular.

[0054] Please see Figure 5 , Figure 5 The schematic diagram of the light distribution element in the second embodiment of this application is shown. Compared with the second surface 112 of the light distribution element 100 in the first embodiment, the second surface 112 of the light distribution element 100 in this embodiment is configured to allow the first refracted light L1 to be emitted perpendicularly to form an outgoing light. That is, the first refracted light L1 will not be refracted when it passes through the second surface 112, and will pass directly through the second surface 112 and be emitted.

[0055] By setting both the first surface 111 and the second surface 112 to be inclined, the first surface 111 can deflect the normal light rays perpendicular to the horizontal plane P to form the first refracted light ray L1. The first refracted light ray L1 passes perpendicularly through the second surface 112 to form the outgoing light ray, thus realizing the deflection and output of the normal light rays, that is, realizing the polarized illumination of the optical axis, which can meet the application scenarios of optical axis polarized illumination. Moreover, the first refracted light ray L1 does not refract on the second surface 112, and its energy loss is relatively small, which is conducive to further improving the brightness of the polarized illumination.

[0056] Furthermore, the second surface 112 is configured such that the emitted light rays are perpendicularly incident on the light-incident surface of the target structure 200. That is, after the first refracted light ray L1 is perpendicularly emitted from the second surface 112, the emitted light rays are also perpendicularly incident on the light-incident surface of the target structure 200. Compared with the conventional technology where the side emission of the LED light source is incident on the target structure after passing through the lens plate, since the luminous intensity of the normal emission of the LED light source is higher than that of its side emission, after the first surface 111 and the second surface 112 of the light distribution member 100 process the normal emission of the LED light source, the emitted light rays emitted from the second surface 112 can be perpendicularly incident on the light-incident surface of the target structure 200, which can significantly improve the illumination brightness of the target structure 200.

[0057] Obviously, the second surface 112 of the light distribution element 100 is parallel to the light incident surface of the target structure 200, that is, the tilt angle θ2 of the second surface 112 is equal to the tilt angle of the target structure 200 relative to the horizontal plane P, and is less than the tilt angle θ1 of the first surface 111.

[0058] As for the other aspects of the light distribution element 100 in this embodiment, they are basically the same as the other aspects of the light distribution element 100 in the first embodiment above. The specific content can be referred to the description of the first embodiment above, and will not be repeated here.

[0059] Please see Figure 6 and Figure 7 , Figure 6 A schematic diagram of the light distribution element in the third embodiment of this application is shown. Figure 7 It shows Figure 6 The schematic diagram of the light distribution element shows that, compared to the second surface 112 of the light distribution element 100 in the first embodiment, the second surface 112 of the light distribution element 100 in this embodiment is horizontally arranged and is used to further deflect the first refracted light L1 to the same side to form the second refracted light L2.

[0060] By setting an inclined first surface 111 and a horizontal second surface 112, the first surface 111 can deflect the normal light ray perpendicular to the horizontal plane P to form a first refracted ray L1, and the second surface 112 can further deflect the first refracted ray L1 to the same side to form a second refracted ray L2. This achieves the deflection of the normal light ray, that is, it achieves polarized illumination of the optical axis, which can meet the application scenarios of polarized illumination of the optical axis. Moreover, compared with the inclined second surface 112, the horizontal second surface 112 has a larger refraction angle for the first refracted ray L1, which can further increase the final deflection angle of the normal light ray.

[0061] The second surface 112 is configured such that the second refracted ray L2 perpendicularly illuminates the light-incident surface of the target structure 200. Compared to the conventional technology where the lateral emission of the LED light source illuminates the target structure after passing through a lens plate, the luminous intensity of the normal emission of the LED light source is higher than that of its lateral emission. After the first surface 111 and the second surface 112 of the light distribution member 100 process the normal emission of the LED light source, the second refracted ray L2 emitted from the second surface 112 can perpendicularly illuminate the light-incident surface of the target structure 200, thus significantly improving the illumination brightness of the target structure 200. The tilt angle of the target structure 200 relative to the horizontal plane P is greater than the tilt angle of the target structure 200 in the first and second embodiments described above.

[0062] The top view of the light distribution element 100 can present the following: Figure 4The effect shown is that, since the second surface 112 is horizontal, the top view of the multiple microlenses 120 is their orthographic projection onto the second surface 112. For the specific arrangement and technical effects of the microlenses 120, please refer to the corresponding content of the first embodiment described above. Furthermore, some sides of the substrate 110 of the light distribution element 100 are not of a regular shape, unlike the trapezoidal surface 114 in the above embodiment.

[0063] As for the other aspects of the light distribution element 100 in this embodiment, they are basically the same as the other aspects of the light distribution element 100 in the first embodiment above. The specific content can be referred to the description of the first embodiment above, and will not be repeated here.

[0064] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A light distribution element, characterized in that, include: The substrate (110) has a first surface (111) and a second surface (112). and Multiple microlenses (120) are disposed on the second surface (112); The first surface (111) is inclined relative to the horizontal plane (P) to deflect the normal light rays perpendicular to the horizontal plane (P) to form a first refracted ray (L1); the second surface (112) is inclined relative to the horizontal plane (P) to allow the first refracted ray (L1) to be emitted perpendicularly to form an outgoing ray or to further deflect the first refracted ray (L1) to the same side to form a second refracted ray (L2).

2. The light distribution element according to claim 1, characterized in that, The second surface (112) is configured such that the emitted light or the second refracted light (L2) is perpendicularly incident on the light-incident surface of the target structure (200).

3. The light distribution element according to claim 1, characterized in that, The tilt angle θ1 of the first surface (111) relative to the horizontal plane (P) is greater than the tilt angle θ2 of the second surface (112).

4. The light distribution element according to claim 1, characterized in that, The first surface (111) and the second surface (112) extend and intersect in the same direction, and the extension direction of the first surface (111) and the second surface (112) is opposite to the deflection direction of the normal ray.

5. The light distribution element according to claim 1, characterized in that, The substrate (110) also has a side surface (113) connected between the first surface (111) and the second surface (112); The side surface (113) includes two opposing trapezoidal surfaces (114) and two opposing square surfaces. The trapezoidal surfaces (114) are connected to the square surfaces. The trapezoidal surfaces (114) have acute base angles and obtuse base angles. The acute base angles are formed by the first surface (111) and the base edge, and the obtuse base angles are formed by the second surface (112) and the base edge.

6. The light distribution element according to any one of claims 1 to 5, characterized in that, The light distribution element (100) is an integral structure.

7. The light distribution element according to any one of claims 1 to 5, characterized in that, The plurality of microlenses (120) are arranged in an array, adjacent microlenses (120) are connected, and the orthographic projection (122) of each microlens (120) on the second surface (112) is a parallelogram.

8. The light distribution element according to claim 7, characterized in that, The plurality of microlenses (120) are arranged in a rectangular array and have a length direction and a width direction. The orthographic projection (122) is rectangular, with the long side (124) of the orthographic projection (122) located in the length direction and the short side (126) of the orthographic projection (122) located in the width direction.

9. A light distribution element, characterized in that, include: The substrate (110) has a first surface (111) and a second surface (112). and Multiple microlenses (120) are disposed on the second surface (112); The first surface (111) is inclined relative to the horizontal plane (P) to deflect the normal light rays perpendicular to the horizontal plane (P) to form a first refracted ray (L1); the second surface (112) is horizontal to further deflect the first refracted ray (L1) to the same side to form a second refracted ray (L2).

10. The light distribution element according to claim 9, characterized in that, The second surface (112) is configured such that the second refracted ray (L2) is perpendicularly incident on the light-incident surface of the target structure (200); The plurality of microlenses (120) are arranged in an array, adjacent microlenses (120) are connected, and the orthographic projection (122) of each microlens (120) on the second surface (112) is a parallelogram.

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