Light distribution assembly and lamp

Abstract

The utility model provides a light distribution assembly and a lamp. The light distribution assembly comprises a lens, the lens is provided with a light inlet side and a light outlet side which are opposite, the lens is provided with a light outlet face on the light outlet side, a light inlet cavity facing an opening of the light inlet side is formed in the lens, the cavity wall of the light inlet cavity is the light inlet face, and the side, facing the light inlet cavity, of the outer side wall of the lens is a reflecting face; and the shading structure is arranged in the light inlet cavity and used for shading light rays entering the shading structure, and the lens is configured to reflect the light rays entering the light inlet cavity and then emit the light rays out of the light outlet face. The light distribution assembly and the lamp can effectively improve light spots and reduce glare.

Description

TECHNICAL FIELD

[0001] The utility model relates to lighting technical field especially relates to a light distribution assembly and lamp. BACKGROUND

[0002] In the lighting technical field, the design of the lamp not only pays attention to the light emitting efficiency of the light source, but also more and more values the distribution, uniformity and illumination range of light, and the light distribution effect of the light source is increasingly improved.

[0003] The traditional light distribution mode often adopts single lens structure, and these structures have many limitations in realizing complex light distribution effect, such as large light efficiency loss, poor light distribution uniformity, insufficient glare control and the like. Moreover, the existing light distribution assembly mostly has problems of inconvenient installation, complex process and the like, and the use of multi-component combined light distribution assembly also increases the manufacturing cost. SUMMARY

[0004] The utility model discloses a light distribution assembly and lamp can improve the light spot and reduce the glare.

[0005] To realize the above-mentioned purpose, the utility model provides a light distribution assembly, comprising:

[0006] Lens has opposite light entrance side and light exit side, and the lens is provided with a light exit surface on the light exit side, and an open light entrance cavity towards the light entrance side is formed in the lens, the cavity wall of the light entrance cavity is a light entrance surface, and the side of the outer side wall of the lens towards the light entrance cavity is a reflection surface;

[0007] Light shielding structure is arranged in the light entrance cavity and is used for shielding the light incident on the light shielding structure;

[0008] The lens is configured to reflect the light incident on the light entrance cavity and emit from the light exit surface.

[0009] Optionally, the lens is provided with a cavity penetrating through the lens, and the cavity comprises the light entrance cavity and a mounting cavity in communication with the light entrance cavity, the mounting cavity is arranged close to the light exit side, and the light shielding structure is fixed in the mounting cavity.

[0010] Optionally, the light shielding structure comprises a first light shielding piece, and the first light shielding piece is provided with a light shielding surface towards the light source module.

[0011] Optionally, the light shielding surface is provided with a plurality of recessed polygonal pyramid structures.

[0012] Optionally, the light shielding structure further comprises a second light shielding piece, the second light shielding piece is connected with the first light shielding piece, and the first light shielding piece is fixed to the lens through the second light shielding piece.

[0013] Optionally, the second light shielding piece is provided with a light shielding column extending towards the light source module through the first light shielding piece, and the light shielding column is used for shielding the light reflected out of the light entrance cavity.

[0014] Optionally, the light shielding structure is made of light absorbing material.

[0015] Optionally, the light shielding structure is an integrated structure.

[0016] Optionally, the light shielding structure is made of light absorbing material.

[0017] A lamp, comprising a light source module and the light distribution assembly.

[0018] Compared with the prior art, the technical scheme of the utility model has the following beneficial effects:

[0019] The light distribution assembly comprises a lens and a light shielding structure, the lens has opposite light-in side and light-out side, the lens is provided with a light-out surface at the light-out side, an light-in cavity opening towards the light-in side is formed in the lens, and the light shielding structure is arranged in the light-in cavity. The cavity wall of the light-in cavity is a light-in surface, and the side of the outer side wall of the lens facing the light-in cavity is a reflection surface, so that the light emitted by the light source module can partially enter the reflection surface through the light-in surface and be emitted through the light-out surface after being reflected by the reflection surface, part of the light is subjected to Fresnel reflection on the light-in surface to generate stray light, the light shielding structure can absorb the stray light, improve the light spot and reduce glare, and the light emitted by the lamp is more uniform. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a perspective view of the lamp according to the embodiment of the utility model;

[0021] Figure 2 is a sectional view of the lens;

[0022] Figure 3 is a sectional view of the light distribution assembly;

[0023] Figure 4 is a perspective view of the light shielding structure;

[0024] Figure 5 is a light path diagram of the light distribution assembly;

[0025] Figure 6 is an exploded view of the light distribution assembly.

[0026] BRIEF DESCRIPTION OF DRAWINGS

[0027] The lamp 100;

[0028] The light distribution assembly 1, the lens 11, the light-in side 111, the light-out side 112, the light-in cavity 113, the mounting cavity 114, the light-in surface 115, the reflection surface 116, the light-out surface 117, and the abutting portion 118;

[0029] The light shielding structure 12 includes a first light shielding piece 121 and a second light shielding piece 122.

[0030] The light source module 2. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the utility model more clear, the utility model will be described in detail below in combination with the drawings and specific embodiments.

[0032] Here, it needs to be explained that, in order to avoid the utility model from being obscured by unnecessary details, only the structures and / or processing steps closely related to the scheme of the utility model are shown in the drawings, and other details not closely related to the utility model are omitted.

[0033] In addition, it also needs to be explained that the term "comprises", "includes" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0034] Please refer to Figure 1 As shown in the figure, the lamp 100 provided by the utility model embodiment includes a light distribution assembly 1 and a light source module 2, wherein the light distribution assembly 1 is used for light distribution of the light source module 2, so that the lamp 100 can fully utilize light and realize the effect of uniform light emission.

[0035] The light distribution assembly 1 includes a lens 11 and a light shielding structure 12.

[0036] Please refer to Figure 2 As shown in the figure, the lens 11 includes an incident light side 111 and an outgoing light side 112. The incident light side 111 faces the light source module 2, and the outgoing light side 112 is oppositely arranged with the incident light side 111. The lens 11 is provided with an outgoing light surface 117 at the outgoing light side 112. The lens 11 is provided with a cavity penetrating through, and the cavity includes an incident light cavity 113 and a mounting cavity 114 in communication with the incident light cavity 113, wherein the opening of the incident light cavity 113 faces the incident light side 111, and the mounting cavity 114 is arranged close to the outgoing light side 112 and opens at the outgoing light surface 117.

[0037] Please refer to Figure 2 And Figure 3 As shown in the figure, the light shielding structure 12 is arranged in the incident light cavity 113 and fixed in the mounting cavity 114, and is used for shielding the light incident on the light shielding structure 12. The light shielding structure 12 separates the incident light cavity 113 and the mounting cavity 114 in communication.

[0038] The light inlet cavity 113 is trumpet-shaped, and the mounting cavity 114 is cylindrical. In the axial direction of the lens 11, the mounting cavity 114 has a first length, and the light inlet cavity 113 has a second length, and the ratio of the first length to the second length is 1.8-2.2. By reasonably setting the length ratio of the light inlet cavity 113 and the mounting cavity 114, the light can be fully utilized, and the loss of light in the transmission process can be reduced.

[0039] The light inlet cavity 113 includes a first end facing the light inlet side 111 and a second end connected to the mounting cavity 114. The cross-sectional area of the first end is larger than that of the second end, that is, the large mouth of the trumpet is directed towards the light source module 2, which is conducive to capturing and receiving light emitted by the light source module 2 in a larger range. Compared with other straight tubes or conical shapes, the trumpet-shaped design can more effectively collect light and reduce light loss at the inlet, thereby improving overall light efficiency. As the light propagates from the first end to the second end, the gradual reduction in cross-sectional area causes the light to be dispersed during propagation. This dispersion helps the light to be more evenly distributed during subsequent optical processing, reducing the phenomenon of light spots and uneven brightness.

[0040] Please refer to Figure 3 As shown in the figure, the lens 11 includes a light inlet face 115, a reflecting face 116, and a light outlet face 117. The light inlet face 115 is the cavity wall of the light inlet cavity 113 and is used to receive light emitted by the light source module 2. The reflecting face 116 is the side of the outer side wall of the lens 11 facing the light inlet cavity 113 and is responsible for reflecting light to the light outlet face 117. That is, the lens 11 reflects the light incident into the light inlet cavity 113 and emits it from the light outlet face 117.

[0041] In summary, the light emitted by the light source module 2 enters the reflecting face 116 through the light inlet face 115 and is emitted through the light outlet face 117 after being reflected by the reflecting face 116. Preferably, the reflecting face 116 is a total reflecting face 116 that can collimate all the light incident onto the reflecting face 116, thereby fully utilizing the light.

[0042] Please refer to Figure 4 As shown in the figure, the light shielding structure 12 includes a first light shielding piece 121 and a second light shielding piece 122 connected together. The outer periphery of the first light shielding piece 121 abuts against the junction area of the inner wall of the light inlet cavity 113 and the inner wall of the mounting cavity 114 to separate the light inlet cavity 113 and the mounting cavity 114. The first light shielding piece 121 is fixed to the lens 11 through the second light shielding piece 122.

[0043] The first light shielding member 121 is provided with a light shielding surface 1211 facing the light source module 2. The second light shielding member 122 is provided with a light shielding column 1221 extending towards the light source module 2 through the first light shielding member 121, which is used to shield the light reflected by the light cavity 113. That is, the light shielding column 1221 is used to absorb 95% of the light in the middle part of the light source module 2, and the light shielding surface 1211 is used to reflect and re-absorb the remaining 5% of the light that is not absorbed.

[0044] The light shielding surface 1211 is provided with a plurality of recessed polygonal pyramid structures. Part of the light emitted by the light source module 2 will directly strike the first light shielding member 121. At this time, the first light shielding member 121 effectively prevents the direct penetration of light inside the lens 11, thereby avoiding unnecessary light leakage and spot formation, which helps to improve the overall control ability of the light and ensures that the light propagates along the predetermined path, improving the lighting effect.

[0045] The polygonal pyramid structure can effectively increase the contact area of the light with the light shielding surface 1211 and reflect the light multiple times through multiple facets. The size, shape and number of the polygonal pyramid structure can be adjusted as needed to adapt to different light source characteristics and lighting needs.

[0046] Preferably, the light shielding surface 1211 is made of a black surface with a reflectivity of 5%. After only two reflections, the light energy is only 0.25% of the original, which is almost negligible, achieving the effect of absorbing light.

[0047] The first light shielding member 121 also includes an annular abutment portion 1212, and the light shielding surface 1211 is located inside the annular abutment portion 1212, and the annular abutment portion 1212 extends beyond the light shielding surface 1211 towards the direction of the light cavity 113. When the light is reflected on the polygonal pyramid structure, the weak light reflected may shine on the light entrance surface 115, and the annular abutment portion 1212 is arranged beyond the light shielding surface 1211 to effectively block this part of the light.

[0048] The light shielding column 1221 blocks part of the direct light by extending in the direction of the light entrance side 111, making the light more evenly distributed inside the lens 11.

[0049] The arrangement of the light shielding column 1221 not only prevents direct light, but also further guides and disperses the light through its shape and position. When the light emitted by the light source module 2 strikes the lens 11, part of the light will be reflected back, causing Fresnel reflection and producing stray light. These stray light will be projected onto the light shielding column 1221 and absorbed, reducing the chaotic scattering of light inside the lamp 100, making the light more uniform and soft when it reaches the light exit surface 117. In addition, the length and shape of the light shielding column 1221 can be adjusted as needed to adapt to different lighting needs and achieve the best light distribution effect.

[0050] The presence of the first light shielding member 121 and the second light shielding member 122 effectively reduces the risk of glare, making the light in the lighting area more soft and comfortable, which is particularly important for people who need to be in the lighting environment for a long time, such as office workers, students reading, etc. By reducing the occurrence of glare and light spot phenomenon, the first light shielding member 121 and the second light shielding member 122 improve the visual comfort of the user and help protect eye health.

[0051] The second light shielding member 122 includes an opposite connection end 1222 and a free end 1223, the connection end 1222 is connected with the first light shielding member 121, and the free end 1223 is arranged close to the light inlet side 111. From the connection end 1222 to the free end 1223, the cross-sectional area of the second light shielding member 122 gradually decreases, which saves material cost to a certain extent.

[0052] In the embodiment, the light shielding column 1221 is also made of a black surface light absorbing material, and the reflectivity of the black surface is 5%. After only two reflections, the light energy is only 0.25% of the original, which is almost negligible, achieving the effect of absorbing light.

[0053] Further, along the axial direction of the lens 11, the light inlet cavity 113 has a second length, and the light shielding column 1221 has a third length, and the ratio of the second length to the third length is 2-4. By controlling the length of the light shielding column 1221 in the light inlet cavity 113, the propagation path of the light can be more effectively guided and controlled. Within this ratio range, the light shielding column 1221 can moderately block direct light, while allowing sufficient light to pass through and enter the light inlet cavity 113 for further scattering and distribution. This balance helps to achieve more uniform and soft light distribution, reduce light spot and uneven light and shadow phenomenon, and improve lighting efficiency.

[0054] Please refer to Figure 5 As shown, part of the light emitted by the light source module 2 is directly incident on the first light shielding member 121 and the second light shielding member 122 and is absorbed, part of the light enters the reflecting surface 116 through the light inlet surface 115, and after being reflected by the reflecting surface 116, it is emitted through the light outlet surface 117, and the other part of the light is reflected on the light inlet surface 115 by Fresnel reflection, and is re-reflected to the first light shielding member 121 and the second light shielding member 122 and is absorbed.

[0055] The second light shielding member 122 also includes a connecting portion 1224. The connecting portion 1224 is located in the mounting cavity 114. In the embodiment, the connecting portion 1224 is also made of a black light absorbing surface, and the light leakage caused by processing errors can be absorbed by the connecting portion 1224. In other embodiments, the connecting portion 1224 can also not be treated as light absorbing, and the utility model does not limit this.

[0056] The light shielding structure 12 further includes a light shield 125. The light shield 125 is also located in the mounting cavity 114. The light shield 125 is located above the lens 11 and is fixedly connected to the lens 11.

[0057] See also Figure 6 As shown, the light shield 125 is located at the opening of the mounting cavity 114 at the light emitting surface 117. A snap-fit ​​portion 1251 is provided on the side of the light shield 125 facing the inner wall of the mounting cavity 114, and a docking portion 118 is provided on the inner wall of the mounting cavity 114 at a position corresponding to the snap-fit ​​portion 1251. The light shielding structure 12 is snap-fitted and installed in the mounting cavity 114 of the lens 11 through the snap-fit ​​portion 1251 and the docking portion 118. Through the design of the snap-fit ​​portion 1251 and the docking portion 118, the light shielding structure 12 can be easily and firmly snap-fitted and installed in the mounting cavity 114 of the lens 11. This installation method does not require complicated tools and additional fasteners, greatly simplifies the assembly process, and improves production efficiency. At the same time, the snap-fit ​​structure also facilitates subsequent maintenance and replacement operations.

[0058] In this embodiment, the engaging portion 1251 is a engaging protrusion, and the docking portion 118 is a engaging groove. In other embodiments, the engaging portion 1251 is a engaging groove, and the docking portion 118 is a engaging protrusion.

[0059] At the same time, the plane of the light shield 125 facing the light-emitting side 112 is flush with the light-emitting surface 117, maintaining the overall aesthetics and compactness while also sealing the opening of the light-emitting surface 117. Together with the first light shielding member 121, the light shield 125 seals the entire mounting cavity 114. The light shield 125 is made of a light-absorbing material and has a light-absorbing effect. If errors occur during the processing or installation of the various structures of the light distribution assembly 1, causing some stray light to escape into the mounting cavity 114, this stray light will be absorbed by the light shield 125, ensuring that no light leaks or light spots are formed.

[0060] In this embodiment, the light shielding structure 12 is an integrated structure. In other embodiments, the light shielding structure 12 can also be provided in separate parts.

[0061] In summary, the lamp 100 of the embodiment of the present invention includes a lens 11 and a light-shielding structure 12. The lens 11 includes a light-entering surface 115, a reflecting surface 116, and a light-emitting surface 117. The light-shielding structure 12 includes a first light-shielding member 121 and a second light-shielding member 122. A portion of the light emitted by the light source module 2 is directly incident on the first light-shielding member 121 and the second light-shielding member 122 and is absorbed. A portion of the light enters the reflecting surface 116 through the light-entering surface 115, and after being reflected by the reflecting surface 116, is emitted through the light-emitting surface 117. Another portion undergoes Fresnel reflection on the light-entering surface 115, and is re-reflected onto the light-shielding structure 12 and absorbed. The interaction between the lens 11 and the light-shielding structure 12 can reduce light loss, lower the risk of glare, effectively absorb stray light, and enable the lamp 100 to emit more uniform light.

[0062] The above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A light distribution assembly, characterized by, The lens (11) has opposite light-incoming side (111) and light-outgoing side (112), the lens (11) is provided with light-outgoing surface (117) on the light-outgoing side (112), the light-incoming cavity (113) is formed in the lens (11) and opens towards the light-incoming side (111), the cavity wall of the light-incoming cavity (113) is light-incoming surface (115), and the outer side wall of the lens (11) is reflective surface (116) on the side towards the light-incoming cavity (113); The light-blocking structure (12) is arranged in the light-incoming cavity (113) and is used for blocking light incident on the light-blocking structure (12); The lens (11) is configured to reflect the light incident on the light-incoming cavity (113) and then emit the light from the light-outgoing surface (117). The lens (11) is provided with a cavity penetrating through the lens (11), the cavity includes the light-incoming cavity (113) and the mounting cavity (114) in communication with the light-incoming cavity (113), the mounting cavity (114) is arranged close to the light-outgoing side (112), and the light-blocking structure (12) is fixed in the mounting cavity (114).

2. The light distribution assembly of claim 1, wherein, The light-blocking structure (12) includes a first light-blocking piece (121) provided with a light-blocking surface (1211) facing the light source module (2).

3. The light distribution assembly of claim 1, wherein, The light-blocking surface (1211) is provided with a plurality of recessed multi-prism structures.

4. The light distribution assembly of claim 3, wherein, The light-blocking structure (12) further includes a second light-blocking piece (122), the second light-blocking piece (122) is connected with the first light-blocking piece (121), and the first light-blocking piece (121) is fixed to the lens (11) through the second light-blocking piece (122).

5. The light distribution assembly of claim 3, wherein, The second light-blocking piece (122) is provided with a light-blocking column (1221) extending towards the light source module (2) through the first light-blocking piece (121), and the light-blocking column is used for blocking the light reflected by the light-incoming cavity (113).

6. The light distribution assembly of claim 5, wherein, The light-blocking structure (12) is made of light-absorbing material.

7. The light distribution assembly of claim 1, wherein, The light-blocking structure (12) is an integrated structure.

8. The light distribution assembly of claim 1, wherein, Further comprising a light-blocking cover (125) located above the lens (11) and fixedly connected with the lens (11).

9. The light distribution assembly of claim 1, wherein, The light source module (2) and the light distribution assembly according to any one of claims 1-9 are included.

10. A luminaire characterized by: ​

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