A light distribution element, a light source module, and an illumination device

Abstract

This invention discloses a light distribution element, a light source module, and a lighting device, relating to the field of lighting technology. The light distribution element includes a first light distribution region and a second light distribution region. The first cross-section of the first light distribution region along the first light-incident surface to the first light-exit surface is different from the second cross-section of the second light distribution region along the second light-incident surface to the second light-exit surface. This results in different light distribution effects of the first and second light distribution regions on the same light source, thereby enabling different light distribution effects to be achieved using the same light distribution element and improving the versatility of the light distribution element.

Description

Technical Field

[0001] This invention relates to the field of lighting technology, and more particularly to a light distribution element, a light source module, and a lighting device. Background Technology

[0002] In lighting fixtures, without changing the light source, the light distribution elements, such as reflectors, that work with the light source determine the light distribution effect, such as the exit angle or deflection angle of the emitted light. If it is necessary to change the light distribution effect of the emitted light from the lighting fixture, it is often necessary to change the structure of the light distribution elements.

[0003] Therefore, in order to achieve different light distribution effects, it is necessary to manufacture a variety of light distribution elements with different structures, resulting in poor versatility of light distribution elements. Summary of the Invention

[0004] To address the problem of poor versatility of light distribution elements, this invention provides a light distribution element, a light source module, and an illumination device.

[0005] The present invention provides a light distribution element, comprising: a first light distribution region and a second light distribution region, wherein the first light distribution region includes a first light-incident surface and a first light-outceasing surface, and the second light distribution region includes a second light-incident surface and a second light-outceasing surface, wherein a first cross-section along the first light-incident surface to the first light-outceasing surface is different from a second cross-section along the second light-incident surface to the second light-outceasing surface.

[0006] In the aforementioned light distribution element, the curvature of the first light-incident surface along the first cross-sectional direction is greater than the curvature of the second light-incident surface along the second cross-sectional direction.

[0007] and / or

[0008] The curvature of the first light-emitting surface along the first cross-sectional direction is greater than the curvature of the second light-emitting surface along the second cross-sectional direction.

[0009] The aforementioned light distribution element, wherein the first light distribution area includes a first middle portion and a first edge portion, the first middle portion being far from the second light distribution area, and the first edge portion being close to the second light distribution area, and from the first middle portion to the first edge portion, the curvature of the first light-incident surface and / or the first light-outceasing surface along the first cross-sectional direction gradually decreases;

[0010] and / or

[0011] The second light distribution area includes a second middle portion and a second edge portion. The second middle portion is far from the first light distribution area, and the second edge portion is close to the first light distribution area. From the second middle portion to the second edge portion, the curvature of the second light-incident surface and / or the second light-outceasing surface gradually increases along the second cross-sectional direction.

[0012] The curvature of the aforementioned light-distributing element is smoothly transitioned at the adjacent points of the first light-incident surface and the second light-incident surface.

[0013] and / or

[0014] The curvature of the first light-emitting surface and the second light-emitting surface at their adjacent locations transitions smoothly.

[0015] The aforementioned light distribution element has at least two segments of the first light distribution area and at least two segments of the second light distribution area, with the first and second light distribution areas alternately arranged on the light distribution element.

[0016] The aforementioned light distribution element has a centrally symmetrical structure;

[0017] and / or

[0018] The light distribution element has an axisymmetric structure.

[0019] In the aforementioned light distribution element, the number of the first light distribution areas is equal to the number of the second light distribution areas.

[0020] The aforementioned light distribution element has a first light distribution region having a first light source cavity, which is close to the first light incident surface and far from the first light emitting surface; and a second light distribution region having a second light source cavity, which is close to the second light incident surface and far from the second light emitting surface.

[0021] In the aforementioned light distribution element, the first light source cavity and the second light source cavity are interconnected along the direction from the first light distribution area to the second light distribution area.

[0022] The aforementioned light distribution element further includes a mounting portion having a first mounting surface. The plane of the first mounting surface is perpendicular to the direction from the first light incident surface to the first light emitting surface. The first mounting surface is close to the first light incident surface and far from the first light emitting surface.

[0023] The aforementioned light distribution element has its mounting portion disposed within or around the first light distribution area and the second light distribution area.

[0024] In the aforementioned light distribution element, the orthographic projection of the first light distribution area onto the first mounting surface is arc-shaped, the orthographic projection of the second light distribution area onto the first mounting surface is arc-shaped, and the orthographic projections of all the first light distribution areas and all the second light distribution areas onto the first mounting surface are circular.

[0025] The aforementioned light distribution element has a first positioning hole on the mounting portion, the first positioning hole being perpendicular to the first mounting surface; and / or, the mounting portion has a positioning post, the positioning post being perpendicular to the first mounting surface and extending in a direction away from the first light-emitting surface.

[0026] The aforementioned light distribution element is a lens; the first light distribution area converges or diffuses light; and / or the second light distribution area converges or diffuses light.

[0027] The present invention provides a light source module, comprising: a light-emitting component and a light-distributing element as described in any of the preceding claims, wherein the light-emitting component includes a light source substrate and a light-emitting element, and the light-distributing element covers the light-emitting element.

[0028] In the aforementioned light source module, the number of the first light distribution area is at least two segments, the number of the second light distribution area is at least two segments, and the first light distribution area and the second light distribution area are uniformly alternately arranged on the light distribution element;

[0029] The number of light-emitting elements is equal to the number of segments in the first light distribution region or the number of segments in the second light distribution region. The light-emitting elements are arranged in groups, uniformly and dispersedly on the light source substrate.

[0030] The light source module described above further includes a mounting portion, which has a first mounting surface. The plane of the first mounting surface is perpendicular to the direction from the first light incident surface to the first light emitting surface.

[0031] The light source substrate has a second mounting surface, on which the light-emitting element is disposed and attached to the first mounting surface.

[0032] In the aforementioned light source module, the orthographic projection of the first light distribution area onto the first mounting surface is arc-shaped, the orthographic projection of the second light distribution area onto the first mounting surface is arc-shaped, and the orthographic projections of all the first light distribution areas and all the second light distribution areas onto the first mounting surface are circular.

[0033] The orthographic projection of the connection lines of each group of light-emitting elements onto the first mounting surface is arc-shaped, and the orthographic projection of the connection lines of all groups of light-emitting elements onto the first mounting surface is circular.

[0034] In the aforementioned light source module, the first mounting surface is annular, the second mounting surface is circular or annular, and the centers of the first mounting surface and the second mounting surface are aligned.

[0035] The aforementioned light source module has a positioning post on the mounting part, the positioning post being perpendicular to the first mounting surface and centrally symmetrical on the first mounting surface; the light source substrate has a first group of second positioning holes and a second group of second positioning holes perpendicular to the second mounting surface, the first group of second positioning holes and the second group of second positioning holes being centrally symmetrically arranged on the second mounting surface, and any one of the second positioning holes in each group of second positioning holes being matched and aligned with the positioning post.

[0036] and / or

[0037] The mounting portion has a first positioning hole, which is perpendicular to the first mounting surface and is centrally symmetrical on the first mounting surface; the light source substrate has a first set of mounting holes and a second set of mounting holes perpendicular to the second mounting surface, which are centrally symmetrically arranged on the second mounting surface, and any one mounting hole in each set of mounting holes is matched and aligned with the first positioning hole.

[0038] In the aforementioned light source module, the central arc angle corresponding to any group of the second positioning holes on the second mounting surface is less than or equal to the central arc angle corresponding to a single segment of the first light distribution area or a single segment of the second light distribution area on the second mounting surface;

[0039] and / or

[0040] The central arc angle corresponding to any group of light-emitting elements on the second mounting surface is less than or equal to the central arc angle corresponding to a single segment of the first light distribution area or a single segment of the second light distribution area on the second mounting surface.

[0041] In the aforementioned light source module, within any group of the second positioning holes, the arc lengths between the second positioning holes are equal or the central angles corresponding to the arc lengths are equal.

[0042] and / or

[0043] Within any group of mounting holes, the arc lengths between the mounting holes are equal, or the central angles corresponding to the arc lengths are equal.

[0044] The present invention provides a lighting device, including a rear housing and a light source module as described in any of the preceding claims.

[0045] The present invention provides a light distribution element, including a first light distribution area and a second light distribution area. The first cross-section of the first light distribution area along the first light incident surface to the first light emitting surface is different from the second cross-section of the second light distribution area along the second light incident surface to the second light emitting surface. This results in different light distribution effects of the first light distribution area and the second light distribution area on the same light source, thereby realizing different light distribution effects using the same light distribution element and improving the versatility of the light distribution element. Attached Figure Description

[0046] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings:

[0047] Figure 1 This is a schematic diagram of the structure of the light distribution element in Embodiment 1 of the present invention;

[0048] Figure 2 for Figure 1 The main view;

[0049] Figure 3 for Figure 1 Sectional view along direction AA in the middle;

[0050] Figure 4 for Figure 1 BB direction section view;

[0051] Figure 5 for Figure 1 The sectional view along the CC direction in the middle;

[0052] Figure 6 This is a schematic diagram of the structure of the light-emitting module in Embodiment 2 of the present invention assembled on the lighting device in Embodiment 3;

[0053] Figure 7 Figure 6 An exploded view of the second mounting surface of the light source substrate, viewed from the center.

[0054] Figure 8 for Figure 6 The sectional view in the image.

[0055] Figure label:

[0056] 100-light distribution components;

[0057] 10-First light distribution area; 11-First light incident surface; 12-First light emitting surface; 13-First middle part; 14-First edge part; 15-First light source cavity;

[0058] 20 - Second light distribution area; 21 - Second light incident surface; 22 - Second light emitting surface; 23 - Second middle part; 24 - Second edge part; 25 - Second light source cavity;

[0059] 30 - Mounting part; 31 - First mounting surface; 32 - First positioning hole; 33 - Positioning post;

[0060] 200-Light Source Module;

[0061] 40 - Light-emitting component; 41 - Light source substrate; 411 - Second mounting surface; 412 - Second positioning hole; 413 - Mounting hole; 414 - Fixing hole; 42 - Light-emitting element; 50 - First fastener

[0062] 300 - Lighting device; 60 - Rear housing; 61 - Module receiving cavity; 62 - Threaded hole; 70 - Second fastener. Detailed Implementation

[0063] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention 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 invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0064] Example 1

[0065] like Figures 1 to 5 As shown, this embodiment of the invention provides a light distribution component for improving the light distribution path of a light source. The light distribution element 100 includes a first light distribution region 10 and a second light distribution region 20. The first light distribution region 10 includes a first light-incident surface 11 and a first light-exiting surface 12. The second light distribution region 20 includes a second light-incident surface 21 and a second light-exiting surface 22. A first cross-section along the first light-incident surface 11 to the first light-exiting surface 12 of the first light distribution region 10 is different from a second cross-section along the second light-incident surface 21 to the second light-exiting surface 22 of the second light distribution region 20. This results in different light distribution effects for the same light source by the first light distribution region 10 and the second light distribution region 20, thereby achieving different light distribution effects using the same light distribution element 100 and improving the versatility of the light distribution element 100.

[0066] In this embodiment of the invention, in order to achieve different light distribution effects, the curvature of the first light-incident surface 11 along the first cross-sectional direction is greater than the curvature of the second light-incident surface 21 along the second cross-sectional direction. At this time, the curvature of the first light-emitting surface 12 and the second light-emitting surface 22 can be the same, or the curvature of the first light-emitting surface 12 can be greater than the curvature of the second light-emitting surface 22. This makes the refraction of light on the first light-incident surface 11 greater than the refraction on the second light-incident surface 21, thereby making the refraction of the first light distribution area 10 on the same light source greater. The emission angle of the same light source in the first light distribution area 10 is different from the emission angle of the same light source in the second light distribution area 20. Similarly, the curvature of the first light-emitting surface 12 along the first cross-section can be greater than the curvature of the second light-emitting surface 22 along the second cross-section. In this case, the curvature of the first light-incident surface 11 and the second light-incident surface 21 can be the same, or the curvature of the first light-incident surface 11 can be greater than the curvature of the second light-incident surface 21. This results in the light being refracted more strongly on the first light-emitting surface 12 than on the second light-emitting surface 22, thus making the first light distribution area 10 refract more strongly for the same light source. Consequently, the emission angle of the same light source corresponding to the first light distribution area 10 is different from the emission angle corresponding to the second light distribution area 20. Specifically, see... Figure 3 and Figure 4 It is evident that the first cross-section on the first light distribution area 10 is significantly different from the second cross-section on the second light distribution area 20, and the curvature of the first light emitting surface 12 is significantly greater than that of the second light emitting surface 22.

[0067] The above embodiments of the present invention achieve adjustment of the emitted light angle by having different degrees of curvature on their respective cross-sections of the first light-incident surface 11, the second light-incident surface 21, the first light-emitting surface 12, and the second light-emitting surface 22. As a variation, the first light-incident surface 11, the second light-incident surface 21, the first light-emitting surface 12, and the second light-emitting surface 22 can also have different degrees of polarization on their respective cross-sections, so that the degree of polarization of the first light distribution area 10 towards the same light source differs from that of the second light distribution area 20. Of course, the first cross-section can also differ from the second cross-section in other aspects, as long as different light distribution effects can be achieved.

[0068] In this embodiment of the invention, the first light distribution region 10 includes a first central portion 13 and a first edge portion 14. The first central portion 13 is away from the second light distribution region 20, and the first edge portion 14 is close to the second light distribution region 20. From the first central portion 13 to the first edge portion 14, the curvature of the first light-incident surface 11 along the first cross-sectional direction gradually decreases, or the curvature of the first light-emitting surface 12 may gradually decrease. Therefore, the light refraction is greater when the light source is close to the first central portion 13 and less when it is close to the first edge portion 14. Specifically, from the first central portion 13 to the first edge portion 14, the curvature of the first light-incident surface 11 along the first cross-sectional direction may gradually decrease at a first ratio, or the curvature of the first light-emitting surface 12 may gradually decrease at a second ratio. The first ratio may be equal to or different from the second ratio.

[0069] Similarly, the second light distribution region 20 includes a second central portion 23 and a second edge portion 24. The second central portion 23 is away from the first light distribution region 10, and the second edge portion 24 is close to the first light distribution region 10. From the second central portion 23 to the second edge portion 24, the curvature of the second light-incident surface 21 along the second cross-sectional direction gradually increases, or the curvature of the second light-emitting surface 22 may gradually increase. Therefore, the degree of light refraction is smaller when the light source is close to the second central portion 23 and larger when it is close to the second edge portion 24. Specifically, from the second central portion 23 to the second edge portion 24, the curvature of the second light-incident surface 21 along the second cross-sectional direction may gradually increase with a third ratio, or the curvature of the second light-emitting surface 22 may gradually increase with a fourth ratio. The third ratio may be equal to or not equal to the fourth ratio. The first ratio may or may not be equal to the third ratio; the second ratio may or may not be equal to the fourth ratio.

[0070] In this embodiment of the invention, the first light distribution region 10 and the second light distribution region 20 are arranged adjacent to each other. In order to improve the continuity of light distribution in the first light distribution region 10 and the second light distribution region 20 and improve the utilization rate, the light source can partially correspond to the first light distribution region 10 and partially correspond to the second light distribution region 20. Therefore, the curvature at the adjacent point of the first light-incident surface 11 and the second light-incident surface 21 is gradually transitioned. Similarly, the curvature at the adjacent point of the first light-emitting surface 12 and the second light-emitting surface 22 can also be gradually transitioned. Of course, as a variation, the curvature at the adjacent point of the first light-incident surface 11 and the second light-incident surface 21 can also be abrupt, thus forming a step at the adjacent point; the curvature at the adjacent point of the first light-emitting surface 12 and the second light-emitting surface 22 can also be abrupt, thus forming a step at the adjacent point.

[0071] In fact, the first light distribution region 10 and the second light distribution region 20 do not have a strict boundary on the light distribution element 100; in other words, there may be no physical boundary. The present invention divides the light distribution element 100 into the first light distribution region 10 and the second light distribution region 20 for the convenience of explaining their different light distribution effects corresponding to the same light source. Figure 2 In the middle, the area enclosed by the two dashed lines on the right is the second light distribution area 20, and the area enclosed by the two dashed lines in the upper left corner is the first light distribution area 10.

[0072] In practical applications, to facilitate user observation of the degree of refraction of the light source by the first light distribution area 10 and the second light distribution area 20, the curvature on the first light-incident surface 11 and the second light-incident surface 21 can remain unchanged. Instead, the curvature on the first light-out surface 12 and the second light-out surface 22 can be changed. This allows the user to judge the influence trend on the light by observing the curvature of the externally visible light-out surface on the light distribution element. Conversely, to prevent the user from observing the degree of refraction of the light source by the first light distribution area 10 and the second light distribution area 20, the curvature on the first light-out surface 12 and the second light-out surface 22 can remain unchanged. Instead, the curvature on the first light-incident surface 11 and the second light-incident surface 21 can be changed.

[0073] In this embodiment of the invention, the number of first light distribution regions 10 is at least two segments, and the number of second light distribution regions 20 is also at least two segments. For example, the number of first light distribution regions 10 is three, four, or five or more segments, and the number of second light distribution regions 20 is three, four, or five or more segments. In special cases, the number of first light distribution regions 10 is only one segment, and the number of second light distribution regions 20 can also be only one segment. In order to make the shape of the emitted light spot of the light source module 200 using this light distribution element 100 roughly uniform, the first light distribution regions 10 and the second light distribution regions 20 are alternately arranged on the light distribution element 100.

[0074] In this embodiment of the invention, the light distribution element 100 can be a centrosymmetric structure, an axisymmetric structure, or a structure that is both centrosymmetric and axisymmetric. Therefore, the light emitted from a light source using this light distribution element 100 can also be symmetrical. Specifically, the first light distribution region 10 on the light distribution element 100 can be centrosymmetric, axisymmetric, or a structure that is both centrosymmetric and axisymmetric; the second light distribution region 20 on the light distribution element 100 can be centrosymmetric, axisymmetric, or a structure that is both centrosymmetric and axisymmetric. Of course, the light distribution element 100 can be neither centrosymmetric nor axisymmetric.

[0075] In this embodiment of the invention, the number of first light distribution regions 10 is equal to the number of second light distribution regions 20, thereby allowing a certain number of light sources to be configured for the light distribution element 100, such that all of these light sources can correspond to either the first light distribution region 10 or the second light distribution region 20. Of course, the number of first light distribution regions 10 may also differ from the number of second light distribution regions 20, depending on specific requirements.

[0076] In this embodiment of the invention, the first light distribution region 10 has a first light source cavity 15, which is close to the first light-incident surface 11 and the first light-emitting surface 12. The second light distribution region 20 has a second light source cavity 25, which is close to the second light-incident surface 21 and far from the second light-emitting surface 22. The first light source cavity 15 can accommodate a light source, and the second light source cavity 25 can also accommodate a light source. Specifically, the first light source cavity 15 and the second light source cavity 25 are interconnected along the direction from the first light distribution region 10 to the second light distribution region 20, thereby allowing a portion of the light source to be located in the first light source cavity 15 and another portion to be located in the second light source cavity 25, and as mentioned above, the first light distribution region 10 and the second light distribution region 20 are not absolutely separated. Of course, as a variation, the first light source cavity 15 and the second light source cavity 25 can be disconnected from each other, thereby significantly separating the first light distribution region 10 and the second light distribution region 20; and the disconnected areas can be light-shielded.

[0077] In this embodiment of the invention, the light distribution element 100 further includes a mounting portion 30 for mounting the light distribution element 100 to a preset position. The mounting portion 30 has a first mounting surface 31, the plane of which the first mounting surface 31 is located is perpendicular to the direction from the first light-incident surface 11 to the first light-emitting surface 12; in other words, the first mounting surface 31 is perpendicular to the first cross-section. Similarly, the plane of the first mounting surface 31 is also perpendicular to the direction from the second light-incident surface 21 to the second light-emitting surface 22, and the first mounting surface 31 is also perpendicular to the second cross-section. Clearly, the first mounting surface 31 is closer to the first light-incident surface 11 or the second light-incident surface 21, and farther from the first light-emitting surface 12 or the second light-emitting surface 22.

[0078] The mounting part 30 can be located around or inside the first light distribution area 10 and the second light distribution area 20, so as to enable the installation of the light distribution element 100 without affecting the light distribution.

[0079] In this embodiment of the invention, the light-distributing element 100 can be annular. Because the light-distributing element 100 is annular, the extension direction of the first light-distributing region 10 is arc-shaped, and the extension direction of the second light-distributing region 20 is also arc-shaped, forming an annular structure. Specifically, the orthographic projection of the first light-distributing region 10 onto the first mounting surface 31 is arc-shaped, the orthographic projection of the second light-distributing region 20 onto the first mounting surface 31 is arc-shaped, and the orthographic projections of all first light-distributing regions 10 and all second light-distributing regions 20 onto the first mounting surface 31 are annular. Of course, the light-distributing element 100 may not be annular; it can be circular, triangular, triangular, square, rectangular, or strip-shaped, etc. When the light-distributing element 100 is annular, the mounting portion 30 is located on the periphery of the annulus.

[0080] Specifically, the mounting portion 30 may have a first positioning hole 32, which is perpendicular to the first mounting surface 31 and is centrally symmetrically arranged on the first mounting surface 31. The mounting portion 30 may have a positioning post 33, which is perpendicular to the first mounting surface 31 and extends in a direction away from the first light-emitting surface 12. The positioning post 33 is centrally symmetrically arranged on the first mounting surface 31.

[0081] In this embodiment of the invention, the light distribution element 100 is a lens. The light distribution lens can be a converging lens or a diffusing lens, that is, the first light distribution area 10 can be used to converge or diffuse light, and the second light distribution area 20 can be used to converge or diffuse light.

[0082] In the light-distributing element 100 provided in this embodiment of the invention, as mentioned above, the light-distributing element 100 is annular, and the light-distributing element 100 can be centrally symmetrically distributed or axially symmetrically distributed. Therefore, the central arc angle corresponding to each segment of the first light-distributing region 10 on the light-distributing element 100 can be equal to the central arc angle corresponding to each segment of the second light-distributing region 20 on the light-distributing element 100. Specifically, as shown... Figure 1 and Figure 2As shown, the number of first light distribution areas 10 is four, and the number of second light distribution areas 20 is also four. The first light distribution areas 10 and the second light distribution areas 20 are alternately arranged. Therefore, the central arc angle corresponding to each segment of the first light distribution area 10 or each segment of the second light distribution area 20 on the light distribution element 100 is 45 degrees. Of course, as the number of first light distribution areas 10 and the number of second light distribution areas 20 increases, the central arc angle corresponding to each segment of the first light distribution area 10 or each segment of the second light distribution area 20 on the light distribution element 100 decreases, and vice versa. For example, if the first light distribution area 10 and the second light distribution area 20 each include three segments, then the central arc angle of each segment of the first light distribution area 10 or each segment of the second light distribution area 20 is 60 degrees. Of course, in special cases, the light distribution element 100 may not be axially symmetrical or centrally symmetrical. In this case, the central arc angle corresponding to the first light distribution area 10 may not be equal to the central arc angle corresponding to the second light distribution area 20. Even the central arc angles corresponding to the first light distribution area 10 in different segments may be different, and the central arc angles corresponding to the second light distribution area 20 in different segments may also be different.

[0083] Furthermore, on the first mounting surface 31, the positioning post 33 and the first positioning hole 32 can be located on the same circumference, that is, the distance from the center of the first mounting surface 31 to the positioning post 33 and the first positioning hole 32 is equal, thus eliminating the need to increase the size of the light distribution element 100. Of course, the positioning post 33 and the first positioning hole 32 can also be located on different circumferences.

[0084] in addition, Figure 3 for Figure 2 The sectional view along the AA direction shows a sectional view of the second light distribution area 20, which is the second cross section. Figure 4 for Figure 2 The sectional view along the BB direction shows a sectional view of the first light distribution area 10, which is the first cross-section.

[0085] Finally, it should be noted that in this embodiment of the invention, the first cross-section and the second cross-section refer to cross-sections perpendicular to the longer extension direction of the solid. When the light distribution element 100 is annular, the longer extension direction of the light distribution element 100 is circumferential. Therefore, the first cross-section and the second cross-section are cross-sections passing through the center of the circle and extending from the light incident surface to the light emitting surface. Moreover, the first cross-section and the second cross-section refer to cross-sectional views, not sectional views. Furthermore, in this embodiment of the invention, "vertical," "parallel," or "symmetrical" respectively refer to approximately vertical, approximately parallel, or approximately symmetrical, meaning that deviations caused by processing or assembly are allowed, and the technical effect can still be achieved.

[0086] Example 2

[0087] This invention provides a light source module 200, such as... Figures 6 to 8As shown, it includes a light-emitting component 40 and a light-distributing element 100 as in Embodiment 1. The light-emitting component 40 includes a light source substrate 41 and a light-emitting element 42. The light-distributing element 100 covers the light-emitting element 42 to distribute light to the light-emitting element 42.

[0088] In this embodiment of the invention, the light source module 200 includes at least two sets of light-emitting elements 42, and each set of light-emitting elements 42 includes at least one light-emitting element 42, such as two, three, four or more light-emitting elements 42. In the light distribution element 100, there are at least two segments of the first light distribution region 10 and at least two segments of the second light distribution region 20, and the first light distribution region 10 and the second light distribution region 20 are uniformly alternately arranged on the light distribution element 100. Correspondingly, the light-emitting elements 42 are divided into at least two groups, such that the number of groups of light-emitting elements 42 is equal to the number of segments of the first light distribution region 10 or equal to the number of segments of the second light distribution region 20. The light-emitting elements 42 are arranged in groups and dispersedly on the light source substrate 41, so that all the light-emitting elements 42 can correspond to the first light distribution region 10, or all the second light distribution region 20, or partially correspond to the first light distribution region 10 and partially correspond to the second light distribution region 20. This also allows the light source module 200 to change the emitted light effect by changing the relative position of the light-emitting component 40 and the light distribution element 100. For example, if the light distribution element 100 is a converging lens, when the curvature of the second light-incident surface 21 or the second light-exit surface 22 of the second light distribution region 20 is less than that of the first light-incident surface 11 or the second light-exit surface 22, the light emission angle of the light source module 200 is maximized when all of the light-emitting elements 42 are aligned with the second light distribution region 20, and minimized when all of the light-emitting elements 42 are aligned with the second light distribution region 20. If some of the light-emitting elements 42 are aligned with the first light distribution region 10 and some with the second light distribution region 20, the light emission angle of the light source module 200 falls between the maximum and minimum. Therefore, the higher the proportion of the light-emitting elements 42 aligned with the first light distribution region 10, the smaller the light emission angle, and vice versa.

[0089] As mentioned in Embodiment 1, the light distribution element 100 has a first mounting surface 31. In this embodiment of the invention, the light source substrate 41 has a second mounting surface 411, on which a light-emitting element 42 is disposed and is attached to the first mounting surface 31.

[0090] The first light distribution area 10 has an arc-shaped orthographic projection on the first mounting surface 31, and the second light distribution area 20 has an arc-shaped orthographic projection on the first mounting surface 31. The orthographic projections of all the first light distribution areas 10 and all the second light distribution areas 20 on the first mounting surface 31 are circular. In order for the first light distribution areas 10 and the second light distribution areas 20 to distribute light to the light-emitting element 42 (the first light source cavity 15 and the second light source cavity 25 can accommodate the light-emitting element 42), the orthographic projection of the line connecting each group of light-emitting elements 42 on the first mounting surface 31 is also arc-shaped, and the orthographic projections of all groups of light-emitting elements 42 on the first mounting surface 31 are circular. In other words, if the first light distribution area 10 and the second light distribution area 20 on the light distribution element 100 are centrally symmetrical and axially symmetrical, then the light-emitting elements 42 on the light source substrate 41 are also centrally symmetrical and axially symmetrically arranged.

[0091] In order to match the annular light distribution element 100, when the first mounting surface 31 is annular, the second mounting surface 411 on the light source substrate 41 can be arc-shaped or circular, and the centers of the first mounting surface 31 and the second mounting surface 411 are aligned.

[0092] In this embodiment of the invention, the mounting portion 30 has positioning posts 33, which are perpendicular to the first mounting surface 31 and centrally symmetrical on the first mounting surface 31. Correspondingly, the light source substrate 41 has a first group of second positioning holes 412 and a second group of second positioning holes 412 perpendicular to the second mounting surface 411. The first group of second positioning holes 412 and the second group of second positioning holes 412 are centrally symmetrically arranged on the second mounting surface 411, and any one of the second positioning holes 412 in each group matches and aligns with the positioning post 33. Specifically, the number of groups of second positioning holes 412 on the light source substrate 41 can be three, four, or more, and the number of groups of second positioning holes 412 is the same as the number of positioning posts 33. In a special case, if there is only one positioning post 33 on the mounting portion 30, then there can be only one group of second positioning holes 412.

[0093] The mounting portion 30 has a first positioning hole 32, which is perpendicular to the first mounting surface 31 and centrally symmetrical on the first mounting surface 31. Correspondingly, the light source substrate 41 has a first set of mounting holes 413 and a second set of mounting holes 413 perpendicular to the second mounting surface 411. The first set of mounting holes 413 and the second set of mounting holes 413 are centrally symmetrically arranged on the second mounting surface 411, and any one of the mounting holes 413 in each set matches and aligns with the first positioning hole 32. Specifically, the number of sets of mounting holes 413 on the light source substrate 41 can be three, four, or more, etc., and the number of sets of mounting holes 413 is the same as the number of first positioning holes 32. In the light source module 200, a detachable or non-detachable first fastener 50 can be used to connect the mounting holes 413 and the positioning holes, thereby achieving a fastening connection between the light distribution element 100 and the light-emitting component 40. The first fastener 50 can be a rivet or screw, etc.

[0094] To fully utilize the difference in light distribution effect between the first light distribution region 10 and the second light distribution region 20 on the light distribution element 100, the central arc angle corresponding to any group of light-emitting elements 42 on the second mounting surface 411 can be equal to the central arc angle corresponding to a single segment of the first light distribution region 10 or a single segment of the second light distribution region 20 on the second mounting surface 411. For example, Embodiment 1 mentions that the central arc angle corresponding to each segment of the first light distribution region 10 and each segment of the second light distribution region 20 on the second mounting surface 411 is 45 degrees. Therefore, the central arc angle corresponding to any group of light-emitting elements 42 on the second mounting surface 411 can also be 45 degrees. In practical applications, the central arc angle corresponding to any group of light-emitting elements 42 on the second mounting surface 411 can also be smaller than the central arc angle corresponding to a single segment of the first light distribution region 10 or a single segment of the second light distribution region 20 on the second mounting surface 411, that is, the central arc angle of any group of light-emitting elements 42 can be less than 45 degrees.

[0095] To effectively change the light distribution effect by altering the position of the light-distributing element 100 relative to the light-emitting component 40, the central arc angle corresponding to any set of second positioning holes 412 on the second mounting surface 411 can be equal to the central arc angle corresponding to a single segment of the first light-distributing area 10 or a single segment of the second light-distributing area 20 on the second mounting surface 411. For example, Embodiment 1 mentions that the central arc angle corresponding to each segment of the first light-distributing area 10 and each segment of the second light-distributing area 20 on the second mounting surface 411 is 45 degrees; therefore, the central arc angle corresponding to any set of second positioning holes 412 on the second mounting surface 411 can also be 45 degrees. In practical applications, since some positions of the light-distributing element 100 relative to the light-emitting component 40 do not meet conventional light distribution requirements, the second positioning holes 412 corresponding to these positions can be omitted, meaning that the central arc angle corresponding to any type of second positioning hole 412 on the second mounting surface 411 is smaller than the central arc angle corresponding to a single segment of the first light-distributing area 10 or a single segment of the second light-distributing area 20 on the second mounting surface 411. For example, in Figure 7 In the second mounting surface 411, the central arc angle corresponding to a single segment of the first light distribution area 10 or a single segment of the second light distribution area 20 is 45 degrees. Each group of second positioning holes 412 includes four second positioning holes, and the central arc angle corresponding to any group of second positioning holes 412 is less than 45 degrees.

[0096] like Figure 7 As shown, the group of light-emitting elements 42 surrounded by the dashed frame is a set of light-emitting elements 42, which are visible. Figure 7 Four groups of light-emitting elements 42 are symmetrically distributed on the second mounting surface 411; the mounting holes 413 surrounded by dashed frames are of one type. Figure 7 Four sets of mounting holes 413 are symmetrically distributed on the second mounting surface 411; the second positioning hole 412 surrounded by a dashed frame is one type of mounting hole 413. Figure 7 Four sets of second positioning holes 412 are symmetrically distributed on the second mounting surface 411. Correspondingly, the light distribution element 100 has two first positioning holes 32 and two positioning posts 33.

[0097] Since the setting of the second positioning hole 412 affects the setting of the mounting hole 413, for the mounting hole 413, similarly, the arc core angle corresponding to any kind of mounting hole 413 on the second mounting surface 411 can be less than or equal to the arc core angle corresponding to a single segment of the first light distribution area 10 or a single segment of the second light distribution area 20 on the second mounting surface 411.

[0098] To achieve fine adjustment of the light distribution effect (such as the emitted light angle), the arrangement density of the second positioning holes 412 and mounting holes 413 within each group can be relatively small; conversely, the density can also be relatively large. Specifically, within any group of second positioning holes 412, the arc lengths between the second positioning holes 412 are equal, or the central angles corresponding to the arc lengths are equal; for example, the central angle between adjacent second positioning holes 412 is 10 degrees. Similarly, within any group of mounting holes 413, the arc lengths between the mounting holes 413 are equal, or the central angles corresponding to the arc lengths are equal; for example, the central angle between adjacent mounting holes 413 is 10 degrees.

[0099] On the light source substrate 41 of this embodiment, the second positioning hole 412 and the mounting hole 413 can be located on the same circumference, that is, the distance from the center of the second mounting surface 411 to the second positioning hole 412 and the mounting hole 413 is equal. Of course, the second positioning hole 412 and the mounting hole 413 may not be located on the same circumference. The light source substrate 41 also includes a fixing hole 414. Compared with the second positioning hole 412 or the mounting hole 413, the fixing hole 414 is farther away from the center of the second mounting surface 411. After a fastener passes through the fixing hole 414, the light source module 200 can be installed in a preset position.

[0100] Example 3

[0101] This invention provides a lighting device 300, such as... Figures 6 to 8 As shown, the lighting device 300 includes the light source module 200 and the rear housing 60 described in Embodiment 2. The rear housing 60 has a module receiving cavity 61 for receiving the light source module 200. The rear housing 60 has a threaded hole 62, which is aligned with the fixing hole 414 on the light source substrate 41. A second fastener 70 passes through the fixing hole 414 and the threaded hole 62, thereby connecting the light source module 200 to the rear housing 60. The second fastener 70 can be a screw or other fastener.

[0102] Since the lighting device 300 of this embodiment uses the light distribution element 100 of Embodiment 1, the emission angle of the emitted light of the lighting device 300 can be changed by using the light distribution element 100.

[0103] The specific examples described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A light distribution element, characterized by, The light distribution element comprises: a first light distribution area and a second light distribution area, the first light distribution area comprising a first light entrance surface and a first light exit surface, and the second light distribution area comprising a second light entrance surface and a second light exit surface, a first cross section along the first light entrance surface to the first light exit surface being different from a second cross section along the second light entrance surface to the second light exit surface; the light distribution element further comprises a mounting portion, the mounting portion having a first mounting surface, a plane of the first mounting surface being perpendicular to a direction of the first light entrance surface to the first light exit surface, the first mounting surface being close to the first light entrance surface and away from the first light exit surface; a normal projection of the first light distribution area on the first mounting surface is arc-shaped, and a normal projection of the second light distribution area on the first mounting surface is arc-shaped; normal projections of all the first light distribution areas and all the second light distribution areas on the first mounting surface are spliced to form a circular ring shape; a first light source cavity of the first light distribution area and a second light source cavity of the second light distribution area are in communication with each other along a direction of the first light distribution area to the second light distribution area.

2. The light distribution element according to claim 1, characterized in that a bending degree of the first light entrance surface along the first cross section direction is greater than a bending degree of the second light entrance surface along the second cross section direction; and / or a bending degree of the first light exit surface along the first cross section direction is greater than a bending degree of the second light exit surface along the second cross section direction.

3. The light distribution element according to claim 1 or 2, wherein: the first light distribution area comprises a first middle portion and a first edge portion, the first middle portion being away from the second light distribution area, and the first edge portion being close to the second light distribution area, a bending degree of the first light entrance surface and / or the first light exit surface along the first cross section direction gradually decreasing from the first middle portion to the first edge portion; and / or the second light distribution area comprises a second middle portion and a second edge portion, the second middle portion being away from the first light distribution area, and the second edge portion being close to the first light distribution area, a bending degree of the second light entrance surface and / or the second light exit surface along the second cross section direction gradually increasing from the second middle portion to the second edge portion. a bending degree of the first light entrance surface and the second light entrance surface at an adjacent position thereof is smoothly transitioned; and / or a bending degree of the first light exit surface and the second light exit surface at an adjacent position thereof is smoothly transitioned.

4. The light distribution element of claim 1, wherein a number of the first light distribution areas is at least two, a number of the second light distribution areas is at least two, and the first light distribution areas and the second light distribution areas are alternately arranged on the light distribution element. the light distribution element has a central symmetry structure; and / or the light distribution element has an axial symmetry structure.

5. The light distribution element of claim 1, wherein a number of the first light distribution areas is equal to a number of the second light distribution areas.

6. The light distribution element of claim 1, wherein the first light distribution area has a first light source cavity, the first light source cavity being close to the first light entrance surface and away from the first light exit surface; and the second light distribution area has a second light source cavity, the second light source cavity being close to the second light entrance surface and away from the second light exit surface. the mounting portion is arranged in an inner periphery or an outer periphery of the first light distribution area and the second light distribution area. ​ 7. The light distribution element of claim 1, wherein ​ 8. The light distribution element of claim 1, wherein ​ 9. The light distribution element of claim 1, wherein ​ 10. The light distribution element of claim 1, wherein The mounting portion has a first positioning hole perpendicular to the first mounting surface; and / or the mounting portion has a positioning column perpendicular to the first mounting surface and extending away from the first light-out surface.

11. The light distribution element of claim 1, wherein The light distribution element is a lens; the first light distribution area converges or diffuses light; and / or the second light distribution area converges or diffuses light.

12. A light source module, characterized by The light distribution element comprises: The light-emitting assembly comprises a light source substrate and a light-emitting element, and the light distribution element covers the light-emitting element.

13. The light source module of claim 12, wherein, The number of the first light distribution areas is at least two, and the number of the second light distribution areas is at least two; the first light distribution areas and the second light distribution areas are uniformly and alternately arranged on the light distribution element; The number of groups of the light-emitting elements is equal to the number of segments of the first light distribution areas or equal to the number of segments of the second light distribution areas; the light-emitting elements in each group are uniformly and dispersedly arranged on the light source substrate.

14. The light source module of claim 12, wherein the light source module is configured to be mounted on a printed circuit board (PCB) of a display device. The light distribution element further comprises a mounting portion having a first mounting surface, and the plane of the first mounting surface is perpendicular to the direction from the first light-in surface to the first light-out surface; The light source substrate has a second mounting surface on which the light-emitting elements are arranged and which is attached to the first mounting surface.

15. The light source module of claim 14, wherein the light source module is configured to be mounted on a printed circuit board (PCB) of a display device. The orthogonal projection of the first light distribution areas on the first mounting surface is arc-shaped, the orthogonal projection of the second light distribution areas on the first mounting surface is arc-shaped, and the orthogonal projection of all the first light distribution areas and all the second light distribution areas on the first mounting surface is circular ring-shaped; The orthogonal projection of the connecting line of each group of the light-emitting elements on the first mounting surface is arc-shaped, and the orthogonal projection of the connecting line of all groups of the light-emitting elements on the first mounting surface is circular ring-shaped.

16. The light source module of claim 14, wherein the light source module is configured to be mounted on a printed circuit board (PCB) of a display device. The first mounting surface is circular ring-shaped, the second mounting surface is circular or circular ring-shaped, and the centers of the first mounting surface and the second mounting surface are aligned.

17. The light source module of claim 16, wherein the light source module is configured to be mounted on a printed circuit board (PCB) of a display device. The mounting portion has a positioning column perpendicular to the first mounting surface and centrally symmetric on the first mounting surface; the light source substrate has a first group of second positioning holes and a second group of second positioning holes perpendicular to the second mounting surface, and the first group of second positioning holes and the second group of second positioning holes are centrally symmetrically arranged on the second mounting surface; any one of the second positioning holes in each group is matched and aligned with the positioning column; And / or The mounting portion has a first positioning hole perpendicular to the first mounting surface and centrally symmetric on the first mounting surface; the light source substrate has a first group of mounting holes and a second group of mounting holes perpendicular to the second mounting surface, and the first group of mounting holes and the second group of mounting holes are centrally symmetrically arranged on the second mounting surface; any one of the mounting holes in each group is matched and aligned with the first positioning hole.

18. The light source module of claim 17, wherein the light source module is configured to be mounted on a printed circuit board (PCB) of a display device. The central angle of the arc corresponding to any one of the second positioning holes on the second mounting surface is less than or equal to the central angle of the arc corresponding to a single segment of the first light distribution area or a single segment of the second light distribution area on the second mounting surface; And / or The arc center angle corresponding to any one group of light emitting elements on the second mounting surface is less than or equal to the arc center angle corresponding to the single segment of the first light distribution area or the single segment of the second light distribution area on the second mounting surface.

19. The light source module of claim 17, wherein the light source module is configured to be mounted on a printed circuit board (PCB) of a display device. In any one group of the second positioning holes, the arc length between the second positioning holes is equal or the arc center angle corresponding to the arc length is equal. And / or In any one group of the mounting holes, the arc length between the mounting holes is equal or the arc center angle corresponding to the arc length is equal.

20. An illumination device, characterized by The light source module comprises a rear shell and the light source module as claimed in any one of claims 12-19.

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