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 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 on the outer surface of the optical element along a second direction, so that a first portion of light rays entering the optical element through the first sub-incident surface is reflected by the reflecting surface and then projected onto a first surface after passing through the first sub-exit surface. 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 is projected onto a second surface after passing through the second sub-exit surface. 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 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 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. The exit surface includes a first sub-exit surface and a second sub-exit surface. The first sub-exit surface is located on the outer surface of the optical element along a second direction, and the first sub-exit surface 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 and, after passing through the first sub-exit surface, is projected onto a first surface. The second direction is perpendicular to the first direction and the vertical direction, respectively, and 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 is projected onto a second surface after passing through the second sub-exit surface. The second surface is located below the optical element and is parallel to the first direction.

[0006] In some embodiments, the incident surface further includes a third sub-incident surface; the reflecting surface includes a first sub-reflecting surface and a second sub-reflecting surface, the first sub-reflecting surface and the second sub-reflecting surface being spaced apart along a second direction; the exiting surface further includes a third sub-exiting surface; the first sub-exiting surface is opposite to the first sub-reflecting surface; the third sub-exiting surface is located on the outer surface of the optical element on the other side along the second direction, and the third sub-exiting surface is opposite to the second sub-reflecting surface, so that the third portion of the light rays entering the optical element through the third sub-incident surface are reflected by the second sub-reflecting surface, and after passing through the third sub-exiting surface, are projected onto the first surface.

[0007] In some embodiments, the first sub-emission surface is provided with a plurality of first protrusions arranged sequentially along the vertical direction, and the third sub-emission surface is provided with a plurality of second protrusions arranged sequentially along the vertical direction.

[0008] In some embodiments, the first sub-reflecting surface and the second sub-reflecting surface are symmetrically distributed relative to a symmetry plane, and the first sub-emission surface and the third sub-emission surface are symmetrically distributed relative to a symmetry plane, wherein the symmetry plane is parallel to a first direction and perpendicular to a second direction.

[0009] In some embodiments, the incident surface further includes a fourth sub-incident surface, and the exit surface further includes a fourth sub-exit surface, the fourth sub-exit surface being located between the first sub-reflecting surface and the second sub-reflecting surface; the fourth sub-exit surface is opposite to the fourth sub-incident surface, so that the fourth portion of the light rays that enter the optical element through the fourth sub-incident surface are projected onto the first surface after passing through the fourth sub-exit surface.

[0010] In some embodiments, the optical element has a light source setting area; in a first direction, a fourth sub-incident surface is located between the light source setting area and the fourth sub-exit surface.

[0011] In some embodiments, the outer surface of the optical element on one side along the first direction is a first rotating surface, the rotation axis of the first rotating surface is parallel to the second direction, and the first rotating surface forms a first sub-reflecting surface, a fourth sub-emission surface and a second sub-reflecting surface respectively.

[0012] In some embodiments, the fourth sub-incident surface is a second rotating surface; the rotation axis of the second rotating surface coincides with the rotation axis of the first rotating surface.

[0013] In some embodiments, at least a portion of the fourth sub-emission surface is provided with a plurality of third protrusions sequentially distributed along the second direction.

[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 cause a first portion of light rays entering the optical element through the incident surface to be reflected by the reflecting surface, pass through the first sub-exit surface, and then projected onto the first surface. The optical element is also used to cause a second portion of light rays entering the optical element through the incident surface to pass through the second sub-exit surface and then projected onto the second surface. In this way, the optical element allows the light emitted by the light-emitting element to illuminate both the first and second surfaces, respectively, thus meeting the lighting requirements of specific scenarios.

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

[0018] 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

[0019] 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.

[0020] Figure 1 A schematic diagram of an optical element provided for an embodiment of this utility model; Figure 2 for Figure 1 A schematic diagram of the bottom of the optical element shown in the image; Figure 3 for Figure 1 The right view of the optical element shown in the image; Figure 4 for Figure 1 The front view of the optical element shown in the image; Figure 5 for Figure 1 A schematic diagram of the optical element from another angle is shown in the image; Figure 6 for Figure 5 A partial schematic diagram of region M of the optical element shown in the figure; Figure 7 A schematic diagram of a lighting device provided in an embodiment of this utility model; Figure 8 for Figure 7 The image shows a cross-sectional view of the lighting device along line AA. Figure 9 for Figure 7 The image shows a cross-sectional view of the lighting device along line BB; Figure 10 A partial view of a first sub-emission surface provided for an embodiment of this utility model.

[0021] 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; 140 - Fourth sub-incident surface; 200 - Reflecting surface; 210 - First sub-reflecting surface; 220 - Second sub-reflecting 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; 340 - Fourth sub-exit surface; 341 - Third protrusion; 400 - Light source setting area; 510 - Plane of symmetry; 520 - Axis of rotation; 20 - Light-emitting element; 2-First surface; 3-Second surface. Detailed Implementation

[0022] 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.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] The technical solutions provided by the various embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0027] This utility model provides an optical element. (See reference...) Figures 1 to 10 The 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.

[0028] 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.

[0029] Furthermore, the reflecting surface 200 is located on the outer surface 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.

[0030] In an embodiment of this utility model, the first sub-emission surface 310 is located on the outer surface of one side of the optical element 10 along the second direction, 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 10 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 second direction is perpendicular to the first direction and the vertical direction, and the first surface 2 is perpendicular to the first direction.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] refer to Figure 1 , Figure 2 , Figures 7 to 9 In some embodiments, the incident surface 100 further includes a third sub-incident surface 130. The reflecting surface 200 includes a first sub-reflecting surface 210 and a second sub-reflecting surface 220, which are spaced apart along a second direction. The exiting surface 300 further includes a third sub-exiting surface 330.

[0036] The first sub-emission surface 310 and the first sub-reflection surface 210 are opposite each other, 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 first sub-reflection surface 210, and after passing through the first sub-emission surface 310, are projected onto the first surface 2.

[0037] The third sub-emission surface 330 is located on the outer surface of the optical element 10 on the other side along the second direction, and the third sub-emission surface 330 is opposite to the second sub-reflective surface 220, so that the third portion of the light rays that enter the optical element 10 through the third sub-incident surface 130 are reflected by the second sub-reflective surface 220, and after passing through the third sub-emission surface 330, are projected onto the first surface 2. Exemplarily, the third sub-emission surface 330 is opposite to the first sub-emission surface 310.

[0038] In this way, the first portion of light transmitted through the first sub-emission surface 310 and the third portion of light transmitted through the third sub-emission surface 330 are emitted toward opposite sides of the optical element 10 and projected onto the first surface 2, thereby increasing the area of ​​the illuminated region of the first surface 2.

[0039] It should be noted that in some embodiments, the first sub-reflective surface 210 is a total internal reflection surface. It is understood that the first sub-reflective surface 210 can reflect light based on the principle of total internal reflection. The principle of total internal reflection is the physical phenomenon where, when light travels from an optically denser medium to an optically less dense medium, the refracted light disappears and only reflected light remains when the angle of incidence exceeds a critical angle. In some embodiments, the first sub-reflective surface 210 may be provided with a reflective material. For example, the first sub-reflective surface 210 may be provided with a silver coating. Of course, other methods of forming a reflective surface in the prior art can also be used, forming the first sub-reflective surface 210 on the side of the optical element 10 facing the first surface 2; these will not be listed here.

[0040] Furthermore, the second sub-reflector 220 is similar to the first sub-reflector 210, and will not be described in detail here.

[0041] refer to Figure 5 and Figure 10 In some embodiments, the first sub-emission surface 310 is provided with a plurality of first protrusions 311 arranged sequentially in a vertical direction. For example, the first protrusions 311 are first arched protrusions. In this way, the projection area of ​​the light emitted through the first sub-emission surface 310 onto the first surface 2 can be increased, thereby increasing the area of ​​the first surface 2 that is illuminated.

[0042] In some embodiments, the third sub-emission surface 330 is provided with a plurality of second protrusions 331 arranged sequentially in a vertical direction. For example, the second protrusions 331 are second arched protrusions. In this way, the projection area of ​​the light emitted through the third sub-emission surface 330 onto the first surface 2 can be increased, thereby increasing the area of ​​the first surface 2 illuminated.

[0043] refer to Figure 3 In some embodiments, the first sub-reflective surface 210 and the second sub-reflective surface 220 are symmetrically distributed with respect to the symmetry plane 510. The first sub-emission surface 310 and the third sub-emission surface 330 are also symmetrically distributed with respect to the symmetry plane 510. The symmetry plane 510 is parallel to a first direction and perpendicular to a second direction. This improves the symmetry of the light transmitted from the first sub-emission surface 310 and the third sub-emission surface 330, thereby enhancing the illumination effect of the illumination device 1 equipped with the optical element 10.

[0044] refer to Figure 1 , Figure 3 , Figure 5 , Figure 8 and Figure 9 In some embodiments, the incident surface 100 further includes a fourth sub-incident surface 140, and the exit surface 300 further includes a fourth sub-exit surface 340. The fourth sub-exit surface 340 is located between the first sub-reflecting surface 210 and the second sub-reflecting surface 220. The fourth sub-exit surface 340 is opposite to the fourth sub-incident surface 140, so that the fourth portion of the light rays that enter the optical element 10 through the fourth sub-incident surface 140 are projected onto the first surface 2 after passing through the fourth sub-exit surface 340.

[0045] In this way, by causing the fourth portion of the light rays that enter the optical element 10 through the fourth sub-incident surface 140 to pass through the fourth sub-exit surface 340 and then be projected onto the first surface 2, 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 preventing localized bright spots from appearing on the first surface 2.

[0046] It should be noted that, with Figure 9 Taking the shown orientation as an example, the first portion of light rays entering the optical element 10 from the first sub-incident surface 110 is reflected by the first sub-reflecting surface 210, passes through the first sub-exiting surface 310, and is projected onto the rear region of the first surface 2. The fourth portion of light rays entering the optical element 10 from the fourth sub-incident surface 140 is projected onto the region of the first surface 2 opposite to the optical element 10 after passing through the fourth sub-exiting surface 340. The third portion of light rays entering the optical element 10 from the third sub-incident surface 130 is reflected by the second sub-reflecting surface 220, passes through the third sub-exiting surface 330, and is projected onto the front region of the first surface 2. In this way, a larger area of ​​the first surface 2 can be illuminated, thereby improving the illumination effect of the lighting device 1 on which the optical element 10 is arranged.

[0047] refer to Figure 1 , Figure 5 , Figures 7 to 9 In some embodiments, the optical element 10 is provided with a light source setting area 400. In a first direction, a fourth sub-incident surface 140 is located between the light source setting area 400 and the fourth sub-exit surface 340. In this way, the area of ​​the first surface 2 between the areas illuminated by light emitted from the fourth sub-exit surface 340, which is opposite to the fourth sub-incident surface 140, can be illuminated using light emitted from the fourth sub-exit surface 340.

[0048] refer to Figure 5 and Figure 8In some embodiments, the outer surface of the optical element 10 along one side of the first direction is a first rotation surface, the rotation axis 520 of the first rotation surface is parallel to the second direction, and the first rotation surface forms a first sub-reflecting surface 210, a fourth sub-emission surface 340, and a second sub-reflecting surface 220. In this way, the construction of the first sub-reflecting surface 210, the fourth sub-emission surface 340, and the second sub-reflecting surface 220 can be simplified, thereby reducing the manufacturing cost of the optical element 10.

[0049] refer to Figure 5 and Figure 8 In some embodiments, the fourth sub-incident surface 140 is a second rotation surface. The rotation axis of the second rotation surface coincides with the rotation axis 520 of the first rotation surface. This allows for a more uniform thickness of the optical element 10 located between the fourth sub-incident surface 140 and the fourth sub-exit surface 340, thereby improving the uniformity of light projected from the fourth sub-exit surface 340 onto the first surface 2.

[0050] refer to Figure 5 and Figure 6 In some embodiments, at least a portion of the fourth sub-emission surface 340 is provided with a plurality of third protrusions 341 sequentially distributed along the second direction. This increases the projection area of ​​light emitted through the fourth sub-emission surface 340 onto the first surface 2, thereby increasing the area of ​​the first surface 2 illuminated.

[0051] refer to Figures 1 to 4 , Figure 7 and Figure 8 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] This utility model provides a lighting device. (See reference) Figures 7 to 9 The lighting device 1 provided in this embodiment of the present invention includes: a light-emitting element 20 and any one of the optical elements 10 provided in this embodiment of the present invention.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] It should be noted that in some embodiments of this utility model, although the fourth sub-emission surface 340 is opposite to the fourth sub-incident surface 140, the fourth portion of light rays entering the optical element 10 through the fourth sub-incident surface 140 are directly projected onto the first surface 2 after passing through the fourth sub-emission surface 340 without reflection. However, because the area of ​​the fourth sub-incident surface 140 is small, the brightness of the fourth portion of light rays is low, and therefore, the fourth portion of light rays will not form local bright spots on the tunnel wall. Furthermore, when the fourth sub-emission surface 340 is provided with a third protrusion 341, the third protrusion 341 can further diffuse the light rays emitted from the fourth sub-emission surface 340 to reduce the brightness of the light rays projected from the fourth sub-emission surface 340 onto the first surface 2.

[0060] 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.

[0061] 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 in that, 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 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 on the outer surface of one side of the optical element along the second direction, 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 second direction is perpendicular to the first direction and the vertical direction respectively, and 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 incident surface (100) also includes a third sub-incident surface (130); The reflective surface (200) includes a first sub-reflective surface (210) and a second sub-reflective surface (220), wherein the first sub-reflective surface (210) and the second sub-reflective surface (220) are spaced apart along the second direction; The exit surface (300) also includes a third sub-exit surface (330); The first sub-emission surface (310) is opposite to the first sub-reflection surface (210); The third sub-emission surface (330) is located on the outer surface of the optical element on the other side along the second direction, and the third sub-emission surface (330) is opposite to the second sub-reflecting surface (220) so that the third part of the light rays that enter the optical element through the third sub-incident surface (130) are reflected by the second sub-reflecting surface (220), and after passing through the third sub-emission surface (330), are projected onto the first surface (2).

3. The optical element according to claim 2, characterized in that, The first sub-emission surface (310) is provided with a plurality of first protrusions (311) arranged sequentially along the vertical direction, and the third sub-emission surface (330) is provided with a plurality of second protrusions (331) arranged sequentially along the vertical direction.

4. The optical element according to claim 2, characterized in that, The first sub-reflecting surface (210) and the second sub-reflecting surface (220) are symmetrically distributed relative to the symmetry plane (510), and the first sub-emission surface (310) and the third sub-emission surface (330) are symmetrically distributed relative to the symmetry plane (510), wherein the symmetry plane (510) is parallel to the first direction and perpendicular to the second direction.

5. The optical element according to claim 2, characterized in that, The incident surface (100) further includes a fourth sub-incident surface (140), and the exit surface (300) further includes a fourth sub-exit surface (340), which is located between the first sub-reflecting surface (210) and the second sub-reflecting surface (220); The fourth sub-emission surface (340) is opposite to the fourth sub-incident surface (140) so that the fourth portion of light rays that enter the optical element through the fourth sub-incident surface (140) are projected onto the first surface (2) after passing through the fourth sub-emission surface (340).

6. The optical element according to claim 5, characterized in that, The optical element is provided with a light source setting area (400); in the first direction, the fourth sub-incident surface (140) is located between the light source setting area (400) and the fourth sub-exit surface (340).

7. The optical element according to claim 6, characterized in that, The outer surface of the optical element along the first direction is a first rotating surface. The rotation axis (520) of the first rotating surface is parallel to the second direction. The first rotating surface forms the first sub-reflecting surface (210), the fourth sub-emission surface (340), and the second sub-reflecting surface (220).

8. The optical element according to claim 7, characterized in that, The fourth sub-incident surface (140) is the second rotating surface; the rotation axis of the second rotating surface coincides with the rotation axis (520) of the first rotating surface.

9. The optical element according to claim 5, characterized in that, At least a portion of the fourth sub-emission surface (340) is provided with a plurality of third protrusions (341) sequentially distributed along the second direction.

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.

Images