Optical components and lighting devices

Abstract

This invention provides an optical element and an illumination device. The optical element includes an incident surface, a reflecting surface, and an exit surface. The incident surface includes a first sub-incident surface and a second sub-incident surface. The reflecting surface is located on the outer surface of one side of the optical element along a first direction. The second sub-incident surface is located on the side of the first sub-incident surface opposite to the reflecting surface. The exit surface includes a first sub-exit surface and a second sub-exit surface. The first sub-exit surface is located below the reflecting surface and is opposite to the reflecting surface, so that a first portion of light rays entering the optical element through the first sub-incident surface is reflected by the reflecting surface, passes through the first sub-exit surface, and is projected onto a first surface, wherein the first surface is perpendicular to the first direction. The second sub-exit surface is opposite to the second sub-incident surface, so that a second portion of light rays entering the optical element through the second sub-incident surface passes through the second sub-exit surface and is projected onto a second surface, wherein the second surface is located below the optical element and is parallel to the first direction.

Description

Technical Field

[0001] This utility model relates to the field of optical technology, and in particular to an optical element and an illumination device. Background Technology

[0002] In existing technologies, lighting devices deflect light forward, primarily illuminating the main surface (e.g., the ground). However, in special lighting scenarios such as tunnel lighting, there are secondary illumination surfaces (e.g., walls). The lighting devices in these technologies suffer from poor illumination effects, for example, insufficient brightness on the secondary illumination surfaces. This can easily lead to eye strain for people passing through such environments. Utility Model Content

[0003] This utility model provides an optical element and an illumination device to solve the problem of how to improve the illumination effect of an illumination device.

[0004] To solve the above-mentioned technical problems, this utility model is implemented as follows: In a first aspect, the present invention provides an optical element.

[0005] The optical element provided in this embodiment of the present invention includes: an incident surface, a reflecting surface, and an exit surface; the incident surface includes a first sub-incident surface and a second sub-incident surface, the reflecting surface is located on the outer surface of one side of the optical element along a first direction, the second sub-incident surface is located on the side of the first sub-incident surface away from the reflecting surface, and the exit surface includes a first sub-exit surface and a second sub-exit surface; the first sub-exit surface is located below the reflecting surface and is opposite to the reflecting surface, so that a first portion of light rays entering the optical element through the first sub-incident surface is reflected by the reflecting surface, passes through the first sub-exit surface, and is projected onto a first surface, wherein the first surface is perpendicular to the first direction; the second sub-exit surface is opposite to the second sub-incident surface, so that a second portion of light rays entering the optical element through the second sub-incident surface passes through the second sub-exit surface and is projected onto a second surface, wherein the second surface is located below the optical element and is parallel to the first direction.

[0006] In some embodiments, the optical element has a light-emitting element setting area; in a first direction, a first sub-incident surface is located between the light-emitting element setting area and the reflective surface.

[0007] In some embodiments, the second sub-incident surface is recessed in the direction away from the light-emitting element setting area, and the second sub-exit surface is convex in the direction away from the light-emitting element setting area.

[0008] In some embodiments, the incident surface further includes a third sub-incident surface, and the exit surface further includes a third sub-exit surface, the third sub-exit surface being opposite to the third sub-incident surface, so that the third portion of the light rays that enter the optical element through the third sub-incident surface are projected onto the first surface after passing through the third sub-exit surface.

[0009] In some embodiments, in a first direction, a third sub-incident surface is located between a second sub-incident surface and a first sub-incident surface, and a third sub-exit surface is located between a second sub-exit surface and a first sub-exit surface.

[0010] In some embodiments, the first sub-emission surface protrudes in a direction away from the reflecting surface, and the third sub-emission surface protrudes in a direction away from the third sub-incident surface; the side edge of the third sub-emission surface facing the first sub-emission surface is connected to the side edge of the first sub-emission surface facing the third sub-emission surface.

[0011] In some embodiments, the third sub-emission surface is provided with a plurality of second protrusions distributed sequentially along a second direction, wherein the second direction is perpendicular to the first direction and the vertical direction, respectively.

[0012] In some embodiments, the first sub-emission surface is provided with a plurality of first protrusions distributed sequentially along a second direction, wherein the second direction is perpendicular to the first direction and the vertical direction, respectively.

[0013] In some embodiments, the first sub-incident surface extends along a second direction, and the reflecting surface also extends along a second direction, wherein the second direction is perpendicular to the first direction and the vertical direction, respectively.

[0014] Secondly, this utility model embodiment provides a lighting device.

[0015] The lighting device provided in this embodiment of the present invention includes: a light-emitting element and any one of the optical elements provided in this embodiment of the present invention.

[0016] The above-mentioned technical solutions adopted in the embodiments of this utility model can achieve the following beneficial effects: In an embodiment of this invention, the optical element is used to ensure that a first portion of light rays entering the optical element through the first sub-incident surface is reflected by the reflecting surface, passes through the first sub-exit surface, and is projected onto the first surface. The optical element is also used to ensure that a second portion of light rays entering the optical element through the second sub-incident surface passes through the second sub-exit surface and is projected onto the second surface. In this way, the optical element allows light to illuminate both the first and second surfaces respectively, thereby improving the lighting effect of the lighting device equipped with the optical element and enabling the lighting device equipped with the optical element to meet the lighting needs of special scenarios.

[0017] Furthermore, the first portion of the light projected onto the first surface is reflected by the reflective surface, making the light projected onto the first surface more uniform and softer. Moreover, by using a reflective surface to reflect the light, excessive light is prevented from directly passing through the optical elements and projecting onto the first surface, thus avoiding the formation of localized bright spots. This can cause a flicker-like effect when people pass through the corresponding area, leading to eye strain.

[0018] Especially for special lighting scenarios such as tunnel lighting, the embodiments of the present invention achieve efficient and refined indirect lighting in zones through the integrated functions of beam splitting, reflection and directional projection, which significantly improves the light quality and safety of special lighting scenarios such as tunnel lighting.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A schematic diagram of an optical element provided for an embodiment of this utility model; Figure 2 for Figure 1 The front view of the optical element shown in the image; Figure 3 for Figure 1 A schematic diagram of the bottom of the optical element shown in the image; Figure 4 for Figure 1 The right view of the optical element shown in the image; Figure 5 for Figure 1 Left view of the optical element shown in the image; Figure 6 A schematic diagram of a lighting device provided in an embodiment of this utility model; Figure 7 for Figure 6 The image shows a cross-sectional view of the lighting device along line AA. Figure 8 A partial view of a first sub-emission surface provided for an embodiment of this utility model.

[0022] Explanation of reference numerals in the attached figures: 1-Lighting device; 10-Optical components; 100 - Incident surface; 110 - First sub-incident surface; 120 - Second sub-incident surface; 130 - Third sub-incident surface; 200 - Reflective surface; 300 - Exit surface; 310 - First sub-exit surface; 311 - First protrusion; 320 - Second sub-exit surface; 330 - Third sub-exit surface; 331 - Second protrusion; 400 - Light-emitting element setting area; 20 - Light-emitting element; 2-First surface; 3-Second surface. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Furthermore, although the terminology used in this invention is selected from commonly known and used terms, some terms mentioned in this specification may have been selected by the applicant in his or her judgment, and their detailed meanings are explained in the relevant sections of the description herein.

[0026] Furthermore, it is required that this utility model be understood not only through the actual terminology used, but also through the meaning implied by each term.

[0027] The technical solutions provided by the various embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0028] This utility model provides an optical element. (See reference...) Figures 1 to 8The optical element 10 provided in this embodiment of the present invention includes: an incident surface 100, a reflecting surface 200, and an exiting surface 300. Exemplarily, the incident surface 100 refers to the surface of the optical element 10 where light emitted from the light-emitting element enters the optical element 10. The reflecting surface 200 refers to the surface of the optical element 10 capable of reflecting the projected light. The exiting surface 300 refers to the surface of the optical element 10 where light exits from the optical element 10.

[0029] In an embodiment of this utility model, the incident surface 100 includes a first sub-incident surface 110 and a second sub-incident surface 120. It is understood that the incident surface 100 may include other sub-incident surfaces besides the first sub-incident surface 110 and the second sub-incident surface 120, or it may not include other sub-incident surfaces. Those skilled in the art can flexibly set the number of sub-incident surfaces according to requirements when implementing the solution provided in this utility model embodiment.

[0030] Furthermore, the reflecting surface 200 is located on the outer surface of one side of the optical element 10 along the first direction, and the second sub-incident surface 120 is located on the side of the first sub-incident surface 110 opposite to the reflecting surface 200. The exit surface 300 includes a first sub-exit surface 310 and a second sub-exit surface 320.

[0031] In an embodiment of this utility model, the first sub-emission surface 310 is located below the reflective surface 200 and is opposite to the reflective surface 200, so that the first part of the light rays that enter the optical element 10 through the first sub-incident surface 110 are reflected by the reflective surface 200, and after passing through the first sub-emission surface 310, are projected onto the first surface 2, wherein the first surface 2 is perpendicular to the first direction.

[0032] The second sub-emission surface 320 is opposite to the second sub-incident surface 120, so that the second portion of light rays entering the optical element 10 through the second sub-incident surface 120 are projected onto the second surface 3 after passing through the second sub-emission surface 320. The second surface is located below the optical element 10 and is parallel to the first direction.

[0033] In this manner, in an embodiment of the present invention, the optical element 10 is used to ensure that a first portion of light rays entering the optical element 10 through the first sub-incident surface 110 are reflected by the reflecting surface 200, pass through the first sub-exit surface 310, and are projected onto the first surface 2. The optical element 10 is also used to ensure that a second portion of light rays entering the optical element 10 through the second sub-incident surface 120 pass through the second sub-exit surface 320 and are projected onto the second surface 3. In this way, the optical element 10 can cause light rays to illuminate the first surface 2 and the second surface 3 respectively, thereby improving the lighting effect of the lighting device 1 equipped with the optical element 10 and enabling the lighting device 1 equipped with the optical element 10 to meet the lighting needs of special scenarios.

[0034] Furthermore, the first portion of the light projected onto the first surface 2 is reflected by the reflective surface 200, thus making the light projected onto the first surface 2 more uniform and softer. Moreover, by setting the reflective surface 200 to reflect the light, excessive light is prevented from directly passing through the optical element 10 and projecting onto the first surface 2, thus avoiding the formation of localized bright spots on the first surface 2. This can cause a flicker-like effect when people pass through the corresponding area, leading to eye strain.

[0035] Especially for special lighting scenarios such as tunnel lighting, this utility model embodiment achieves efficient zoned and refined indirect lighting through the integrated function of light splitting, reflection and directional projection, significantly improving the light quality and safety of special lighting scenarios such as tunnel lighting.

[0036] refer to Figure 1 , Figure 6 and Figure 7 In some embodiments, the optical element 10 is provided with a light-emitting element setting area 400. The light-emitting element setting area 400 is used to set the light-emitting element 20. Specifically, the light-emitting element 20 is set in the light-emitting element setting area 400, and the light-emitting part of the light-emitting element 20 faces the incident surface 100 of the optical element 10, so that the light emitted by the light-emitting element 20 can be directed toward the incident surface 100 of the optical element 10.

[0037] In some embodiments, in a first direction, the first sub-incident surface 110 is located between the light-emitting element setting area 400 and the reflective surface 200. Figure 7 Taking the shown orientation as an example, the first direction is the left-right direction. In the left-right direction, the first sub-incident surface 110 is located between the light-emitting element setting area 400 and the reflective surface 200. In other words, in the left-right direction, the light-emitting element setting area 400, the first sub-incident surface 110, and the reflective surface 200 are distributed sequentially. In this way, most of the light emitted by the light-emitting element 20 located in the light-emitting element setting area 400 can enter the optical element 10 from the first sub-incident surface 110 and be projected onto the reflective surface 200. Then, under the reflection of the reflective surface 200, it is projected onto the first sub-exit surface 310 located below the reflective surface 200. Furthermore, the first part of the light projected onto the first sub-exit surface 310 is transmitted out from the first sub-exit surface 310 of the light-emitting element 20 and projected onto the first surface 2, thereby illuminating the first surface 2.

[0038] It should be noted that in some embodiments, the reflecting surface 200 is a total internal reflection surface. It is understood that the reflecting surface 200 can reflect light based on the principle of total internal reflection. The principle of total internal reflection is the physical phenomenon that when light travels from an optically denser medium to an optically less dense medium, the refracted light disappears and only the reflected light remains when the angle of incidence exceeds a critical angle. In some embodiments, the reflecting surface 200 may be provided with a reflective material. For example, the reflecting surface 200 may be provided with a silver coating. Of course, other methods of forming a reflecting surface in the prior art can also be used, forming the reflecting surface 200 on the side of the optical element 10 facing the first surface 2; these will not be listed here.

[0039] refer to Figure 1 , Figure 6 and Figure 7 In some embodiments, the second sub-incident surface 120 is recessed in the direction away from the light-emitting element setting area 400, and the second sub-exit surface 320 is convex in the direction away from the light-emitting element setting area 400. In this way, by making the second sub-incident surface 120 recessed in the direction away from the light-emitting element setting area 400, more of the second portion of light can enter the optical element 10 through the second sub-incident surface 120.

[0040] It is understandable that, since the second sub-emission surface 320 is opposite to the second sub-incident surface 120, the second portion of light rays that enter the optical element 10 through the second sub-incident surface 120 can be emitted through the second sub-emission surface 320. Because the second sub-emission surface 320 protrudes in a direction away from the light-emitting element mounting area 400, the illumination range of the second portion of light rays emitted through the second sub-emission surface 320 can be increased.

[0041] In some embodiments, the incident surface 100 further includes a third sub-incident surface 130, and the exit surface 300 further includes a third sub-exit surface 330. The third sub-exit surface 330 is opposite to the third sub-incident surface 130, so that a third portion of the light rays entering the optical element 10 through the third sub-incident surface 130 are projected onto the first surface 2 after passing through the third sub-exit surface 330. In this way, by allowing the third portion of the light rays entering the optical element 10 through the third sub-incident surface 130 to be projected onto the first surface 2 after passing through the third sub-exit surface 330, the area of ​​the first surface 2 that is not illuminated by the light rays emitted from the first sub-exit surface 310 can be illuminated. This increases the area of ​​the illuminated region of the first surface 2, thereby avoiding localized bright spots on the first surface 2.

[0042] refer to Figure 1 , Figure 2 , Figure 6 and Figure 7In some embodiments, in the first direction, the third sub-incident surface 130 is located between the second sub-incident surface 120 and the first sub-incident surface 110, and the third sub-exit surface 330 is located between the second sub-exit surface 320 and the first sub-exit surface 310.

[0043] by Figure 7 Taking the shown orientation as an example, the first direction is the left-right direction. In the left-right direction, the third sub-incident surface 130 is located between the second sub-incident surface 120 and the first sub-incident surface 110, and the third sub-exit surface 330 is located between the second sub-exit surface 320 and the first sub-exit surface 310. This facilitates the illumination of different areas by the light rays emitted from the first sub-exit surface 310, the third sub-exit surface 330, and the second sub-exit surface 320.

[0044] refer to Figures 1 to 3 , Figure 6 and Figure 7 In some embodiments, the first sub-emission surface 310 protrudes in a direction away from the reflecting surface 200, and the third sub-emission surface 330 protrudes in a direction away from the third sub-incident surface 130. Figure 7 Taking the shown orientation as an example, the first sub-emission surface 310 is located below the reflecting surface 200, and the first sub-emission surface 310 protrudes downwards. The third sub-emission surface 330 also protrudes downwards.

[0045] Furthermore, the side edge of the third sub-emission surface 330 facing the first sub-emission surface 310 is connected to the side edge of the first sub-emission surface 310 facing the third sub-emission surface 330. In this way, the light emitted from the first sub-emission surface 310 can be projected onto the upper region of the first surface 2, and the light emitted from the third sub-emission surface 330 can be projected onto the lower region of the first surface 2, thereby increasing the area of ​​the first surface 2 that is illuminated.

[0046] refer to Figures 3 to 5 In some embodiments, the third sub-emission surface 330 is provided with a plurality of second protrusions 331 distributed sequentially along a second direction, wherein the second direction is perpendicular to the first direction and the vertical direction, respectively. For example, the second protrusions 331 are second arched protrusions. This increases the projection area of ​​light emitted through the third sub-emission surface 330 onto the first surface 2, thereby increasing the area of ​​the first surface 2 illuminated.

[0047] refer to Figures 3 to 5 and Figure 8In some embodiments, the first sub-emission surface 310 is provided with a plurality of first protrusions 311 sequentially distributed along a second direction, wherein the second direction is perpendicular to both the first direction and the vertical direction. For example, the first protrusions 311 are first arched protrusions. This increases the projection area of ​​light emitted from the first sub-emission surface 310 onto the first surface 2, thereby increasing the area of ​​the first surface 2 illuminated.

[0048] refer to Figure 1 and Figure 2 In some embodiments, the first sub-incident surface 110 extends along a second direction, and the reflecting surface 200 also extends along a second direction, wherein the second direction is perpendicular to the first direction and the vertical direction, respectively. This simplifies the construction of the first sub-incident surface 110 and the reflecting surface 200, thereby reducing the manufacturing difficulty of the light-emitting element 20.

[0049] In some embodiments, the first surface 2 is perpendicular to the second surface 3. Exemplarily, when the lighting device 1 equipped with optical elements 10 is used for tunnel lighting, the first surface 2 is the wall inside the tunnel, and the second surface 3 is the floor inside the tunnel.

[0050] In some embodiments, the optical element 10 is made of a light-transmitting material. Exemplarily, multiple optical elements 10 can be arranged in an array and then integrated to form an integral lens. Each optical element 10 is provided with a light-emitting element 20 in a one-to-one correspondence. In this way, the lighting effect can be improved by correspondingly providing multiple light-emitting elements 20 and multiple optical elements 10.

[0051] refer to Figure 6 and Figure 7 This utility model provides a lighting device. The lighting device 1 provided in this utility model includes: a light-emitting element 20 and any one of the optical elements 10 provided in this utility model.

[0052] In this manner, in an embodiment of the present invention, the optical element 10 is used to ensure that a first portion of light rays entering the optical element 10 through the first sub-incident surface 110 are reflected by the reflecting surface 200, pass through the first sub-exit surface 310, and are projected onto the first surface 2. The optical element 10 is also used to ensure that a second portion of light rays entering the optical element 10 through the second sub-incident surface 120 pass through the second sub-exit surface 320 and are projected onto the second surface 3. In this way, the optical element 10 can cause light rays to illuminate the first surface and the second surface respectively, thereby improving the lighting effect of the lighting device 1 equipped with the optical element 10 and enabling the lighting device 1 equipped with the optical element 10 to meet the lighting needs of special scenarios.

[0053] For example, when the lighting device 1 is used for tunnel lighting, the lighting device 1 can be referred to as a tunnel lighting device or a tunnel light. For example, the light-emitting element 20 can be a light-emitting diode (LED) or a light bulb, etc., which will not be listed here.

[0054] When the lighting device 1 is used for tunnel lighting, the first surface 2 is the wall inside the tunnel, and the second surface 3 is the floor inside the tunnel. In this embodiment of the invention, since the first portion of the light projected onto the wall inside the tunnel is reflected by the reflective surface 200, the light projected onto the wall inside the tunnel is more uniform and softer. Furthermore, by setting the reflective surface 200 to reflect the light, excessive light is prevented from directly passing through the optical element 10 and projecting onto the wall inside the tunnel, thus avoiding the formation of local bright spots on the wall inside the tunnel. This can cause a flicker-like effect when people pass through the corresponding area, leading to eye strain.

[0055] It should be noted that in some embodiments of this utility model, although the third sub-emission surface 330 is opposite to the third sub-incident surface 130, the third part of the light rays that enter the optical element 10 through the third sub-incident surface 130 are directly projected onto the first surface 2 after passing through the third sub-emission surface 330 without reflection. However, since the tilt angle of the third part of the light rays relative to the wall inside the tunnel is relatively large, the third part of the light rays are not directly facing the wall inside the tunnel. Therefore, the third part of the light rays will not form local bright spots on the wall inside the tunnel.

[0056] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0057] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An optical element, characterized by, include: Incident surface (100), reflecting surface (200), and exit surface (300); The incident surface (100) includes a first sub-incident surface (110) and a second sub-incident surface (120), the reflecting surface (200) is located on the outer surface of one side of the optical element along a first direction, the second sub-incident surface (120) is located on the side of the first sub-incident surface (110) away from the reflecting surface (200), and the exit surface (300) includes a first sub-exit surface (310) and a second sub-exit surface (320). The first sub-emission surface (310) is located below the reflecting surface (200), and the first sub-emission surface (310) is opposite to the reflecting surface (200), so that the first part of the light rays that enter the optical element through the first sub-incident surface (110) are reflected by the reflecting surface (200), and after passing through the first sub-emission surface (310), are projected onto the first surface (2), wherein the first surface (2) is perpendicular to the first direction; The second sub-emission surface (320) is opposite to the second sub-incident surface (120) so that the second portion of light rays that enter the optical element through the second sub-incident surface (120) are projected onto the second surface (3) after passing through the second sub-emission surface (320), wherein the second surface is located below the optical element and is parallel to the first direction.

2. The optical element according to claim 1, characterized in that, The optical element is provided with a light-emitting element setting area (400); in the first direction, the first sub-incident surface (110) is located between the light-emitting element setting area (400) and the reflective surface (200).

3. The optical element according to claim 2, characterized in that, The second sub-incident surface (120) is recessed in the direction away from the light-emitting element setting area (400), and the second sub-exit surface (320) is protruding in the direction away from the light-emitting element setting area (400).

4. The optical element according to claim 1, characterized in that, The incident surface (100) further includes a third sub-incident surface (130), and the exit surface (300) further includes a third sub-exit surface (330). The third sub-exit surface (330) is opposite to the third sub-incident surface (130) so that the third portion of the light rays that enter the optical element through the third sub-incident surface (130) are projected onto the first surface (2) after passing through the third sub-exit surface (330).

5. The optical element according to claim 4, characterized in that, In the first direction, the third sub-incident surface (130) is located between the second sub-incident surface (120) and the first sub-incident surface (110), and the third sub-exit surface (330) is located between the second sub-exit surface (320) and the first sub-exit surface (310).

6. The optical element according to claim 5, characterized in that, The first sub-emission surface (310) protrudes in a direction away from the reflecting surface (200), and the third sub-emission surface (330) protrudes in a direction away from the third sub-incident surface (130); the third sub-emission surface (330) is connected to the side edge of the first sub-emission surface (310) facing the side edge of the first sub-emission surface (310) facing the third sub-emission surface (330).

7. The optical element according to claim 4, characterized in that, The third sub-emission surface (330) is provided with a plurality of second protrusions (331) distributed sequentially along a second direction, wherein the second direction is perpendicular to the first direction and the vertical direction respectively.

8. The optical element according to claim 1, characterized in that, The first sub-emission surface (310) is provided with a plurality of first protrusions (311) distributed sequentially along a second direction, wherein the second direction is perpendicular to the first direction and the vertical direction respectively.

9. The optical element according to claim 1, characterized in that, The first incident surface (110) extends along the second direction, and the reflecting surface (200) also extends along the second direction, wherein the second direction is perpendicular to the first direction and the vertical direction, respectively.

10. A lighting device, characterized in that, include: The light-emitting element (20) and the optical element according to any one of claims 1 to 9.

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