lens

Abstract

This application relates to a lens. The lens includes a main structure, multiple first optical structures, and multiple second optical structures. The multiple first optical structures are disposed on a first surface, each having a light-emitting surface that is convex. The multiple second optical structures are disposed on a second surface, corresponding one-to-one with the multiple first optical structures, each having a light-incident surface that is curved. The arrangement direction X of each second optical structure intersects with the arrangement direction Y of the corresponding first optical structure. The light-emitting radiation range of this lens covers the viewing angles from both tilted upwards and tilted downwards; that is, when an observer tilts downwards or upwards at the light-emitting surface of the lens, no non-emitting area will be seen, and a continuous emitting pattern can be visually formed, resulting in a good visual effect.

Description

Technical Field

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

[0002] To weaken or eliminate bright spots in the light source, LED-based lighting devices, such as high-mounted brake lights, use lenses to process the light emitted by the LEDs. Specifically, the LEDs project a light spot of roughly the same shape onto the incident surface of the lens, while the emitting surface scatters the light. This allows the emitting surface to appear as a uniform light-emitting surface when viewed directly, without any obvious bright spots. In other words, the emitting surface visually presents a uniform strip or band of light. In this case, the high-mounted brake light can display a uniform red strip or band of light to warn following vehicles to slow down. However, when the observer tilts their head down or up on the emitting surface, they will see non-emitting areas, and a continuous light pattern will not be formed, affecting the visual effect. Summary of the Invention

[0003] Therefore, it is necessary to provide a lens that addresses the problem that non-light-emitting areas may be observed on the light-emitting surface of traditional lenses when viewed from an angle of tilting upwards or downwards.

[0004] A lens, comprising:

[0005] The main structure has opposing first and second surfaces;

[0006] A plurality of first optical structures are disposed on the first surface, each first optical structure having a light-emitting surface, the light-emitting surface being a convex curved surface; and

[0007] A plurality of second optical structures are disposed on the second surface and are arranged in a one-to-one correspondence with the plurality of first optical structures. Each second optical structure has a light-incident surface, and the light-incident surface is curved.

[0008] In this configuration, the arrangement direction X of each second optical structure intersects with the arrangement direction Y of the corresponding first optical structure.

[0009] In one embodiment, each light-incident surface is a concave curved surface, and its orthographic projection on the second surface has a first center line and a second center line. The first center line extends along the arrangement direction X of the second optical structure. Each light-incident surface has an intersecting first line segment and a second line segment. The orthographic projection of the first line segment coincides with the first center line, and the orthographic projection of the second line segment coincides with the second center line. The first line segment is the bottommost line segment. Alternatively, each light-incident surface is a convex curved surface, and its orthographic projection on the second surface has a first center line and a second center line. The first center line extends along the arrangement direction X of the second optical structure. Each light-incident surface has an intersecting first line segment and a second line segment. The orthographic projection of the first line segment coincides with the first center line, and the orthographic projection of the second line segment coincides with the second center line. The first line segment is the topmost line segment.

[0010] In one embodiment, the second line segment is an arc segment.

[0011] In one embodiment, the first line segment is a straight line segment.

[0012] In one embodiment, the orthographic projection of each of the incident light surfaces onto the second surface is a parallelogram.

[0013] In one embodiment, the orthographic projection of each of the light-incident surfaces onto the second surface is rectangular, and the orthographic projection of each of the light-exiting surfaces onto the first surface is rectangular; wherein the arrangement direction X of the second optical structure is perpendicular to the arrangement direction Y of the first optical structure.

[0014] In one embodiment, the plurality of second optical structures are arranged in a rectangular array, with adjacent second optical structures connected together.

[0015] In one embodiment, each light-emitting surface has a third center line and a fourth center line in its orthographic projection onto the first surface, the third center line extending along the arrangement direction Y of the first optical structure; each light-emitting surface has an intersecting third line segment and a fourth line segment, the orthographic projection of the third line segment coinciding with the third center line, the orthographic projection of the fourth line segment coinciding with the fourth center line, and the third line segment being the topmost line segment.

[0016] In one embodiment, the third line segment is a straight line segment, and the fourth line segment is an arc segment.

[0017] In one embodiment, the orthographic projection of each light-emitting surface onto the first surface is a parallelogram.

[0018] The aforementioned lens, by setting multiple first optical structures and multiple second optical structures on both sides of the main structure, with each first optical structure corresponding to one of the multiple second optical structures, and the arrangement direction X of each second optical structure intersecting the arrangement direction Y of the corresponding first optical structure, has an incident light surface that is curved to diffuse part of the incident light. Each first optical structure has an exit light surface that is convex and curved, which also diffuses part of the exit light, thus significantly expanding the light emission radiation range of the lens. Consequently, the light emission radiation range of the lens basically covers the viewing angle range of tilted upward and tilted downward. That is, when the observer tilts downward or tilts upward, they will not see any non-light-emitting areas on the light emission surface of the lens, and a continuous light-emitting pattern can be formed visually, resulting in a good visual effect. Attached Figure Description

[0019] Figure 1 This is a partial structural diagram of a lens in one viewpoint according to an embodiment of this application.

[0020] Figure 2 for Figure 1 A schematic diagram of the local structure of the middle lens from another perspective.

[0021] Figure 3 for Figure 1 A bottom view of the middle lens.

[0022] Figure 4 for Figure 1 Top view of the middle lens.

[0023] Figure 5 This is a partial bottom view of the lens in another embodiment of this application.

[0024] Figure 6 This is a partial bottom view of the lens in another embodiment of this application.

[0025] Figure 7 This is a partial structural diagram of the lens from a certain angle in another embodiment of this application.

[0026] Figure 8 for Figure 7 A schematic diagram of the local structure of the middle lens from another perspective.

[0027] Explanation of reference numerals in the attached figures:

[0028] 100 - Lens; 110 - Main structure; 111 - First surface; 112 - Second surface; 113 - Side surface; 114 - Main body side surface; 116 - Connecting side surface; 120 - First optical structure; 122 - Light emitting surface; 124 - Third line segment; 126 - Fourth line segment; 130 - Second optical structure; 132 - Light incident surface; 134 - First line segment; 136 - Second line segment;

[0029] L1 - First center line; L2 - Second center line; L3 - Third center line; L4 - Fourth center line. Detailed Implementation

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] Please see Figure 1 and Figure 2 , Figure 1 This illustration shows a partial structural diagram of a lens from one viewpoint in one embodiment of this application. Figure 2 It shows Figure 1 A partial structural diagram of the lens from another perspective. An embodiment of this application provides a lens 100 including a main structure 110, a plurality of first optical structures 120, and a plurality of second optical structures 130. The main structure 110 has opposing first surfaces 111 and second surfaces 112. The plurality of first optical structures 120 are disposed on the first surface 111, each first optical structure 120 having a light-emitting surface 122, which is a convex curved surface. The plurality of second optical structures 130 are disposed on the second surface 112, and are arranged in a one-to-one correspondence with the plurality of first optical structures 120. Each second optical structure 130 has a light-incident surface 132, which is a curved surface. The arrangement direction X of each second optical structure 130 intersects with the arrangement direction Y of the corresponding first optical structure 120.

[0037] By setting multiple first optical structures 120 and multiple second optical structures 130 on both sides of the main structure 110, the multiple first optical structures 120 and multiple second optical structures 130 are arranged one-to-one. The arrangement direction X of each second optical structure 130 intersects with the arrangement direction Y of the corresponding first optical structure 120. Each second optical structure 130 has a light-incident surface 132, which is set as a curved surface to diffuse part of the incident light. Each first optical structure 120 has a light-exiting surface 122, which is a convex curved surface and can also diffuse part of the outgoing light. This greatly expands the light-emitting radiation range of the light-exiting surface 122 of the lens 100, and basically covers the viewing angle range of tilted upward and tilted downward. That is, when the observer tilts downward or tilts upward, the observer will not see a non-light-emitting area on the light-exiting surface 122 of the lens 100, and a continuous light-emitting pattern can be formed visually, resulting in a good visual effect.

[0038] It should be noted that both the first optical structure 120 and the second optical structure 130 are structures with a certain length, and their arrangement direction on the corresponding surfaces is their length direction. Overall, the first optical structure 120 and the second optical structure 130 can be parallelograms, ellipsoids, other polygons, or other irregular strip-shaped structures. When both are cuboids, their arrangement direction (length direction) is consistent with the direction of their long sides; when both are rhombuses, their arrangement direction (length direction) is consistent with the direction of their long diagonals; when both are ellipsoids, their arrangement direction (length direction) is consistent with the direction of their major axis. Figure 1 and Figure 2 The arrangement direction Y of the first optical structure 120 is the positive and negative directions of the Y-axis shown in the figure, and the arrangement direction X of each second optical structure 130 is the positive and negative directions of the X-axis shown in the figure, wherein the X-axis and the Y-axis intersect.

[0039] The main structure 110 also has side surfaces 113, which connect between the first surface 111 and the second surface 112. The side surfaces 113 of the main structure 110 include two opposing main side surfaces 114, which are the primary side surfaces, i.e., the side surfaces within the range of a tilted upward or downward viewing angle. The two main side surfaces 114 can be parallel planes or curved surfaces symmetrical about a central plane. The two main side surfaces 114 can be connected by other side surfaces to form a closed side surface 113, making the main structure 110 generally square or other shapes. The two main side surfaces 114 can also be directly joined together to form side surface 113 without the need for connection by other side surfaces, thus making the main structure 110 generally elliptical, circular, or other shapes.

[0040] The main structure 110 is specifically rectangular, but its shape is not limited to this. Correspondingly, the side surface 113 of the main structure 110 also includes two opposing connecting side surfaces 116, which connect the two main side surfaces 114. Among them, the main side surface 114 is the long side surface, and the connecting side surface 116 is the short side surface. Therefore, the lens 100 is also rectangular overall, and its emitted light presents a uniform rectangular light-emitting area in a frontal viewing angle, and a continuous light-emitting area can be observed in tilted upward or tilted downward viewing angles.

[0041] Furthermore, both the main body side 114 and the connecting side 116 are light-transmitting sides. When the incident angle is greater than the critical angle, the incident light rays illuminating the main body side 114 and the connecting side 116 will undergo total internal reflection and be reflected to the first surface 111. In other embodiments, a reflective layer (not shown) or a reflective film (not shown) may be provided on the main body side 114. The reflective layer or reflective film can reflect the light emitted from the main body side 114 to the first surface 111, thereby increasing the amount of light emitted from the light-emitting surface of the lens. The reflective layer may be a metal layer, and the reflective film may be a metal reflective film.

[0042] Multiple second optical structures 130 are arranged in a rectangular array, and their overall arrangement direction can be consistent with or perpendicular to the extension direction of the main structure 110. In other embodiments, the multiple second optical structures 130 can be arranged irregularly or in other array configurations.

[0043] Furthermore, the multiple second optical structures 130 are specifically arranged in a rectangular array, with their length direction consistent with the length direction of the main structure 110 and their width direction consistent with the width direction of the main structure 110. Each row of second optical structures 130 in the length direction corresponds to the elongated side surface 114 of the main body, thereby diffusing more incident light to both sides of the lens's length direction. Obviously, adjacent second optical structures 130 can be connected or spaced apart, depending on the actual needs.

[0044] Furthermore, adjacent second optical structures 130 are connected, forming a strip along the length of the lens. All second optical structures 130 cover the second surface 112, and the light-incident surfaces 132 of some second optical structures 130 are connected to the side surface 114 of the main body. This facilitates the diffusion of incident light to both sides of the lens along its length, increasing the light-emitting irradiance range along the lens's width, i.e., a larger upward and downward angle for the emitted light. In an alternative embodiment, the arrayed second optical structures 130 may occupy only a portion of the second surface 112, with the remaining portions serving as mounting surfaces that contact other components.

[0045] Please see Figure 3 , Figure 3 The diagram shows a bottom view of the lens in this embodiment. The orthographic projection of the light-incident surface 132 of each second optical structure onto the second surface 112 has a first center line L1 and a second center line L2. The first center line L1 extends along the arrangement direction X of the second optical structures 130 and is located between the two main body side surfaces 114. Please refer to... Figure 2 Each incident light surface 132 is a concave curved surface and has an intersecting first line segment 134 and a second line segment 136. The orthographic projection of the first line segment 134 coincides with the first center line L1, and the orthographic projection of the second line segment 136 coincides with the second center line L2. The first line segment 134 is the bottommost line segment.

[0046] The first line segment 134 forms the bottom part of the light-incident surface 132 and is located between the two main side surfaces 114. Thus, the first line segment 134 can be regarded as a dividing line, dividing the light-incident surface 132 into two parts. When the incident light shines on the light-incident surface 132, it mainly refracts towards both sides of the first line segment 134. When the light passes through the light-out surface 122, it will be further deflected to the same side, thereby improving the brightness and uniformity of the luminous pattern seen from the tilted upward or tilted downward angle.

[0047] The first line segment 134 and the second line segment 136 both extend to the edge of the light-incident surface 132, that is, the two ends of the first line segment 134 and the second line segment 136 intersect with the edge of the light-incident surface 132.

[0048] The second line segment 136 is an arc segment, specifically a circular arc segment, meaning the light-incident surface 132 is a circular arc surface, and the first line segment 134 is a line passing through the bottom of the circular arc surface. The circular arc surface is divided into two parts by the first line segment 134, one part of which diffracts the incident light rays towards one side of the lens, and the other part diffracts the incident light rays towards the other side of the lens. In other embodiments, the second line segment 136 can be other curved segments, such as an elliptical arc segment.

[0049] Furthermore, the first line segment 134 is a straight line segment, meaning that the light-incident surface 132 is only concave and curved in the direction of the second line segment 136, but not curved in the direction of the first line segment 134. This reduces light diffusion in the direction of the first line segment 134. Therefore, when diffused incident light, the light is basically diffused towards both sides of the first line segment 134, and very little or no light is diffused towards both sides of the second line segment 136. This makes the diffused light basically directed towards both sides of the first line segment 134, resulting in better brightness and uniformity of the luminous pattern when the observer tilts upwards or downwards. The first line segment 134 is parallel to the side surface 114 of the main body. It should be noted that in other embodiments, the first line segment 134 can be an arc segment with a curvature less than that of the second line segment 136, so that the first line segment 134 is always located at the bottom of the incident light surface 132. At this time, the diffused light will be emitted towards both sides of the second line segment 136, and the main diffused light will still be emitted towards both sides of the first line segment 134. The first line segment 134 can also be other curved segments, such as elliptical arc segments.

[0050] Each light-incident surface 132 has its orthographic projection on the second surface 112 in the form of a parallelogram, such as a rectangle, square, rhombus, or other parallelogram, making it easy to join adjacent light-incident surfaces 132 together. It is understood that in other embodiments, the orthographic projection of each light-incident surface 132 on the second surface 112 may be elliptical, hexagonal, octagonal, or other shapes.

[0051] Furthermore, the orthographic projection of each light-incident surface 132 onto the second surface 112 is rectangular, meaning that the light-incident surface 132 is formed by translating the second line segment 136 along the first line segment 134. This further reduces the diffused light rays in the direction of the first line segment 134, allowing the diffused light rays to illuminate both sides of the lens as much as possible. In other embodiments, the light-incident surface 132 can be formed by moving the second line segment 136 along an arc, where the curvature of the arc is less than the curvature of the second line segment 136, ensuring that the trajectory formed by the movement of the lowest point of the second line segment 136 always forms the lowest part of the light-incident surface 132, which is the first line segment 134.

[0052] Please see Figure 4 , Figure 4 The diagram shows a top view of the lens in this embodiment. Multiple first optical structures 120 are arranged in a rectangular array, with each first optical structure 120 corresponding to a multiple second optical structure 130. Each light-emitting surface 122 of the lens 100 has a third center line L3 and a fourth center line L4 projected onto the first surface 111. The third center line L3 extends along the arrangement direction Y of the first optical structures 120. Please refer to... Figure 1Each light-emitting surface 122 has intersecting third line segment 124 and fourth line segment 126. The orthographic projection of the third line segment 124 coincides with the third center line L3, and the orthographic projection of the fourth line segment 126 coincides with the fourth center line L4. The third line segment 124 is the topmost line segment.

[0053] The third line segment 124 forms the topmost line segment of the light-emitting surface 122, and its extension direction intersects with the two main side surfaces 114. Therefore, the third line segment 124 can be regarded as a dividing line, dividing the light-emitting surface 122 into two parts. When light is emitted through the light-emitting surface 122, the light-emitting surface 122 mainly diffuses the light towards both sides of the third line segment 124, so that the emitted light is fully mixed in the length direction of the lens 100. Therefore, the overall light emission of the lens 100 is more uniform in the frontal direction, and it can form a uniform light-emitting area that continues along the length direction visually, without any light source bright spots, and the overall visual effect is good. Among them, the third line segment 124 and the fourth line segment 126 both pass through the edge of the light-emitting surface 122, that is, both ends of the third line segment 124 and the fourth line segment 126 intersect the edge of the light-emitting surface 122.

[0054] The third segment 124 is a straight line segment, meaning that the light-emitting surface 122 only convexes and curves outward in the direction of the fourth segment 126, and is not curved in the direction of the third segment 124. This reduces light diffusion in the direction of the third segment 124, so the diffused light is basically diffused towards both sides of the third segment 124, and very little or no light diffuses towards both sides of the fourth segment 126. This allows the diffused light to be fully mixed along its length, improving the uniformity of light emission from the light-emitting surface 122. The fourth segment 126 is an arc segment, meaning the light-emitting surface 122 is an arc surface, and the third segment 124 passes through the top of the arc surface. The arc surface is divided into two parts by the third segment 124.

[0055] Each light-emitting surface 122 has its orthographic projection on the first surface 111 in the shape of a parallelogram, such as a rectangle, square, rhombus, or other parallelogram, making it easy to join adjacent light-emitting surfaces 122 together. In other embodiments, the orthographic projection of each light-emitting surface 122 on the first surface 111 is elliptical, hexagonal, octagonal, or other shape.

[0056] Furthermore, the orthographic projection of each light-emitting surface 122 onto the first surface 111 is rectangular, meaning that the light-emitting surface 122 is formed by translating the fourth line segment 126 along the third line segment 124. This further reduces the diffused light rays in the direction of the third line segment 124, allowing the diffused light rays to be dispersed as much as possible along the length direction. In other embodiments, the light-emitting surface 122 can be formed by moving the fourth line segment 126 along an arc, where the curvature of the arc is less than the curvature of the fourth line segment 126, ensuring that the trajectory formed by the movement of the lowest point of the fourth line segment 126 always forms the top part of the light-emitting surface 122, which is the third line segment 124.

[0057] Furthermore, the arrangement direction Y of the first optical structure 120 is perpendicular to the arrangement direction X of the second optical structure 130, that is, the arrangement direction of each light-emitting surface 122 is orthogonal to the arrangement direction of the corresponding light-incident surface 132. It is understood that in other embodiments, the arrangement direction Y of the first optical structure 120 and the arrangement direction X of the second optical structure 130 are not perpendicular.

[0058] Please combine Figure 1 and Figure 2 Lens 100 is a one-piece structure, meaning the main structure 110, the first optical structure 120, and the second optical structure 130 can be integrally molded. Compared to separate structures, it eliminates the need for assembly, resulting in higher production efficiency. Lens 100 can be formed by injection molding, 3D printing, or cutting. The material of lens 100 can be, but is not limited to, polymethyl methacrylate (PMMA), polycarbonate (PC), or silicone. When lens 100 is made of PMMA or PC, it exhibits good impact resistance and optical performance. The main structure 110 can be a plate-like structure with a relatively large thickness; alternatively, the main structure 110 can be a sheet-like structure with a relatively small thickness.

[0059] Please see Figure 5 , Figure 5 A partial bottom view of a lens in another embodiment of this application is shown. Compared with the second optical structure 130 of the lens 100 in the above embodiment, the light incident surface 132 of the second optical structure 130 of the lens 100 in this embodiment is a rhombus when projected onto the second surface 112. Its long diagonal corresponds to the first line segment 134, and its short diagonal corresponds to the second line segment 136.

[0060] The orthographic projection of the light-emitting surface 122 of each first optical structure 120 onto the first surface 111 is also rhomboid, with its long diagonal corresponding to the third line segment 124 and its short diagonal corresponding to the fourth line segment 126. The long diagonal of the orthographic projection of each incident surface 132 is orthogonal to the long diagonal of the orthographic projection of the corresponding light-emitting surface 122.

[0061] As for the other aspects of the lens 100 in this embodiment, they are basically the same as the other aspects of the lens 100 in the above embodiments. The specific details can be referred to the description of the above embodiments, and will not be repeated here.

[0062] Please see Figure 6 , Figure 6A partial bottom view of the lens in another embodiment of this application is shown. Compared to the second optical structure 130 of the lens 100 in the above embodiments, the orthographic projection of the light-incident surface 132 of the second optical structure 130 of the lens 100 in this embodiment onto the second surface 112 is a conventional parallelogram, that is, the parallelogram is neither a right-angled parallelogram nor a rhombus. Its first line segment 134 is parallel to the long side of the light-incident surface 132, and its second line segment 136 is parallel to the short side of the light-incident surface 132.

[0063] The orthographic projection of the light-emitting surface 122 of each first optical structure 120 onto the first surface 111 is also a conventional parallelogram, that is, the parallelogram is neither a right-angled parallelogram nor a rhombus. Its third line segment 124 is parallel to the long side of the light-emitting surface 122, and its fourth line segment 126 is parallel to the short side of the light-emitting surface 122. Among them, the first center line L1 of the orthographic projection of the incident surface 132 onto the second surface 112 is orthogonal to the third center line L3 of the orthographic projection of the corresponding light-emitting surface 122 onto the first surface 111.

[0064] As for the other aspects of the lens 100 in this embodiment, they are basically the same as the other aspects of the lens 100 in the above embodiments. The specific details can be referred to the description of the above embodiments, and will not be repeated here.

[0065] Please see Figure 7 and Figure 8 , Figure 7 This illustration shows a partial structural diagram of the lens at one viewing angle in another embodiment of the present application. Figure 8 It shows Figure 7 A partial structural diagram of the middle lens from another perspective. Compared to the second optical structure 130 of the lens 100 in the above embodiment, the light-incident surface 132 of the second optical structure 130 of the lens 100 in this embodiment is a convex curved surface, and the orthographic projection on the second surface 112 has a first center line L1 and a second center line L2. The first center line L1 extends along the arrangement direction X of the second optical structure 130. Each light-incident surface 132 has an intersecting first line segment 134 and a second line segment 136. The orthographic projection of the first line segment 134 coincides with the first center line L1, and the orthographic projection of the second line segment 136 coincides with the second center line L2. The first line segment 134 is the topmost line segment.

[0066] As for the other aspects of the lens 100 in this embodiment, they are basically the same as the other aspects of the lens 100 in the above embodiments. The specific details can be referred to the description of the above embodiments, and will not be repeated here.

[0067] It should be noted that the application scenarios of lens 100 in this application can be, but are not limited to, lighting, projection, and display. In lighting scenarios, lens 100 can be specifically applied to vehicle lights, including but not limited to headlights, daytime running lights, brake lights, turn signals, fog lights, and lights for head-up display systems. Lens 100 can also be applied to other lighting scenarios, such as smart home appliances, drones, or robots. The first optical structure 120 and the second optical structure 130 can be compound eye lenses, or even miniaturized into microlenses.

[0068] 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.

[0069] 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 lens characterized by, include: The main structure (110) has opposing first surfaces (111) and second surfaces (112). A plurality of first optical structures (120) are disposed on the first surface (111), each first optical structure (120) having a light-emitting surface (122) that is a convex curved surface; and A plurality of second optical structures (130) are disposed on the second surface (112) and are disposed in a one-to-one correspondence with the plurality of first optical structures (120). Each second optical structure (130) has a light-incident surface (132) which is curved. The arrangement direction X of each of the second optical structures (130) intersects with the arrangement direction Y of the corresponding first optical structure (120).

2. The lens according to claim 1, characterized in that, Each of the light-incident surfaces (132) is a concave curved surface, and its orthographic projection on the second surface (112) has a first center line (L1) and a second center line (L2). The first center line (L1) extends along the arrangement direction X of the second optical structure (130). Each of the light-incident surfaces (132) has an intersecting first line segment (134) and a second line segment (136). The orthographic projection of the first line segment (134) coincides with the first center line (L1), and the orthographic projection of the second line segment (136) coincides with the second center line (L2). The first line segment (134) is the bottommost line segment. Each of the light-incident surfaces (132) is a convex curved surface, and its orthographic projection on the second surface (112) has a first center line (L1) and a second center line (L2). The first center line (L1) extends along the arrangement direction X of the second optical structure (130). Each of the light-incident surfaces (132) has an intersecting first line segment (134) and a second line segment (136). The orthographic projection of the first line segment (134) coincides with the first center line (L1), and the orthographic projection of the second line segment (136) coincides with the second center line (L2). The first line segment (134) is the topmost line segment.

3. The lens of claim 2, wherein The second line segment (136) is an arc segment.

4. The lens of claim 3, wherein The first line segment (134) is a straight line segment.

5. The lens of claim 2, wherein The orthographic projection of each of the light-incident surfaces (132) onto the second surface (112) is a parallelogram.

6. The lens according to claim 5, characterized in that, The orthographic projection of each of the light-incident surfaces (132) onto the second surface (112) is rectangular, and the orthographic projection of each of the light-exit surfaces (122) onto the first surface (111) is rectangular; The arrangement direction X of the second optical structure (130) is perpendicular to the arrangement direction Y of the first optical structure (120).

7. The lens of any one of claims 1 to 6, wherein The plurality of second optical structures (130) are arranged in a rectangular array, and adjacent second optical structures (130) are connected.

8. The lens according to any one of claims 1 to 6, characterized in that, Each of the light-emitting surfaces (122) has a third center line (L3) and a fourth center line (L4) projected onto the first surface (111), the third center line (L3) extending along the arrangement direction Y of the first optical structure (120); Each of the light-emitting surfaces (122) has intersecting third line segment (124) and fourth line segment (126), the orthographic projection of the third line segment (124) coincides with the third center line (L3), and the orthographic projection of the fourth line segment (126) coincides with the fourth center line (L4). The third line segment (124) is the topmost line segment.

9. The lens of claim 8, wherein, The third line segment (124) is a straight line segment, and the fourth line segment (126) is an arc segment.

10. The lens according to claim 2 or 5, characterized in that, The orthographic projection of each of the light-emitting surfaces (122) onto the first surface (111) is a parallelogram.

Images