Light distribution assembly and lamp

Abstract

The utility model provides a light distribution assembly which comprises a first optical part, the first optical part is provided with a light inlet cavity, the light inlet cavity comprises a first reflecting surface, a light outlet part and a second reflecting surface, and the first reflecting surface is located on the circumferential surface of the light inlet side of the light inlet cavity and is configured to totally reflect light irradiated to the first reflecting surface to a light source; the second reflecting surface is positioned at the top of the light outlet side of the light inlet cavity and is configured to totally reflect the light irradiated to the second reflecting surface to the light source; and the light emitting part is arranged between the first reflecting surface and the second reflecting surface and is configured to emit the light irradiated to the light emitting part. The light distribution assembly and the lamp are small in light emitting angle and even in light emitting.

Description

Technical Field

[0001] The utility model relates to the technical field of lighting, in particular to a light distribution component and a lamp. Background Art

[0002] In the field of lighting technology, the light emitted by a light source often needs to be distributed through specific optical elements to achieve effective and uniform distribution of the light and thus achieve the desired lighting effect.

[0003] Traditional light distribution methods mostly rely on reflectors or lens structures, but these often suffer from uneven light distribution, severe glare, and low light energy utilization. For example, light from the bottom and middle areas is often difficult to effectively utilize, resulting in reduced lighting efficiency. Furthermore, reflectors can be subject to processing errors during the manufacturing process, causing light to scatter during reflection, resulting in secondary light spots and reducing the comfort and aesthetics of the lighting effect. Utility Model Content

[0004] The purpose of the utility model is to provide a light distribution component and a lamp with a small light output angle and uniform light output.

[0005] To achieve the above object, the present invention provides a light distribution assembly, including a first optical component, the first optical component having a light incident cavity, the light incident cavity including a first reflective surface, a light emitting portion, and a second reflective surface.

[0006] A first reflective surface is located on the peripheral surface of the light incident side of the light incident cavity and is configured to totally reflect the light incident on the first reflective surface to the light source;

[0007] a second reflecting surface, located at the top of the light-outgoing side of the light-incident cavity, configured to totally reflect the light incident on the second reflecting surface back to the light source;

[0008] The light emitting portion is disposed between the first reflecting surface and the second reflecting surface and is configured to emit the light irradiated thereto.

[0009] Optionally, the first optical element is a convoluted structure, and / or the first reflecting surface, the second reflecting surface and the light emitting portion are located on the same hemisphere.

[0010] Optionally, the light emitting portion is a light emitting opening or a lens provided on the first optical component.

[0011] Optionally, a second optical component is also included, which includes a third reflecting surface and a mating end and an open end at both ends of the third reflecting surface. The third reflecting surface is surrounded by a receiving cavity, and the light emitting part and the second reflecting surface are both located in the receiving cavity. The light emitted from the light emitting part is reflected by the third reflecting surface and then emitted toward the open end.

[0012] Optionally, the mating end is snap-fitted to the first reflective surface.

[0013] Optionally, the diameter of the mating end is smaller than the diameter of the open end.

[0014] Optionally, a light mixing element is further included, which is arranged on a side of the opening end away from the mating end and covers the opening end, and is configured to mix the light reflected by the second optical element.

[0015] Optionally, a light-shielding member is further included, which includes a ring-shaped light-shielding wall, which surrounds a light-emitting cavity. The light-emitting cavity includes a light-input end and a light-output end that are relatively arranged. The light-input end is arranged close to the opening end, and the aperture of the light-input end is larger than the aperture of the light-output end.

[0016] Optionally, in the vertical direction, the first optical element has a first height, the light exit portion has a second height, and the ratio of the first height to the second height ranges from 0.45 to 0.55.

[0017] A lamp comprises a light source, a housing and the above-mentioned light distribution component.

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

[0019] The light distribution component of the present invention is provided with a first reflecting surface, a second reflecting surface and a light emitting portion located between the first reflecting surface and the second reflecting surface, so that the light irradiated to the peripheral surface and the top can be totally reflected by the first reflecting surface and the second reflecting surface to the light source, forming Lambert reflection on the light-emitting surface of the light source, and the reflected light is superimposed on the light directly emitted by the light source and emitted from the light emitting portion, otherwise it will continue to reflect in the light incident cavity, so that the light that may have originally escaped can be redirected and emitted. While ensuring that the light emission angle is a small angle, multiple reflections help to eliminate bright and dark spots in the light, increase the central light intensity, and make the final emitted light more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a cross-sectional view of a lamp according to an embodiment of the present utility model;

[0021] Figure 2 yes Figure 1 A three-dimensional structural diagram of the first optical element;

[0022] Figure 3 yes Figure 1 A cross-sectional view of the central light distribution assembly;

[0023] Figure 4 yes Figure 1 A structural diagram of the first optical element and the second optical element;

[0024] Figure 5 yes Figure 1 Light path diagram of the luminaire shown.

[0025] Description of reference numerals:

[0026] lamp 100;

[0027] Light distribution assembly 1, first optical element 11, first reflective surface 111, snap-fit ​​end 1110, step 1111, protrusion 1112, extension surface 1113, light output portion 112, second reflective surface 113, connecting portion 114, light input cavity 115; second optical element 12, mating end 121, snap-fit ​​groove 1211, clearance groove 1212, open end 122, third reflective surface 123, receiving cavity 124; light mixing element 13; light shielding element 14, light input end 141, light output end 142, light shielding wall 143, light output cavity 144, light shielding top 145;

[0028] Light source 2;

[0029] Shell 3. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] It should be noted here that in order to avoid obscuring the present invention due to unnecessary details, only the structures and / or processing steps closely related to the scheme of the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0032] In addition, it should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0033] See also Figure 1 As shown, a lamp 100 of an embodiment of the present invention includes a light distribution component 1, a light source 2 and a shell 3. The light distribution component 1 is arranged in the shell 3 to distribute the light emitted by the light source 2, effectively increasing the central light intensity and reducing glare, achieving the effect of a smaller light output angle and more uniform light.

[0034] The light distribution assembly 1 includes a first optical element 11 and a second optical element 12. Light emitted by the light source 2 sequentially passes through the first optical element 11 and the second optical element 12 before being emitted. In this embodiment, the first optical element 11 is a lens, and the second optical element 12 is a reflector cup.

[0035] See also Figure 2As shown, the first optical element 11 has a light entrance cavity 115, which includes a first reflective surface 111, a light exit portion 112, and a second reflective surface 113. The inner wall of the first optical element 11 is an arc surface, so that the first reflective surface 111, the light exit portion 112, and the second reflective surface 113 form a convoluted structure. The first reflective surface 111, the light exit portion 112, and the second reflective surface 113 are located on the same hemisphere and surround the light entrance cavity 115. That is, the first optical element 11 is covered on the outside of the light source 2. The convoluted structure can guide light to be reflected in the light entrance cavity 115, making the light emitted from the light exit portion 112 more uniform, avoiding uneven phenomena such as light spots and dark areas.

[0036] See also Figures 3 and 4 As shown, the first reflective surface 111 is located on the circumference of the light incident side (not shown) of the light incident cavity 115 and includes the first reflective surface 111 facing the light incident cavity 115 and a snap-on end 1110. The first reflective surface 111 totally reflects light incident on the first reflective surface 111 toward the light source 2. The snap-on end 1110 is positioned near the light exit portion 112 and abuts against the mating end 121 of the second optical element 12.

[0037] The light emitting portion 112 is disposed between the first reflecting surface 111 and the second reflecting surface 113 , and the light in the light incident cavity 115 is emitted from the light emitting portion 112 .

[0038] In the vertical direction, the first optical element 11 has a first height, the light emitting portion 112 has a second height, and the ratio between the first height and the second height is in the range of 0.45 to 0.55. The ratio between the first height and the second height can ensure that after the light is reflected by the first optical element 11, it is emitted through the light emitting portion 112 at a more suitable angle and path, which helps to reduce light loss, so that the light can be effectively emitted and achieve a good light emission effect.

[0039] In this embodiment, the light emitting portion 112 is a light emitting opening, and the light in the light incident cavity 115 can be emitted directly and unimpeded from the light emitting opening, thereby reducing light loss and improving light efficiency. At the same time, the opening design reduces unnecessary complex components and reduces manufacturing costs.

[0040] In other embodiments, the light emitting portion 112 may also be a lens, as long as it can emit light. The present invention does not limit the specific structure of the light emitting portion 112.

[0041] See also Figure 2As shown, since the light exit portion 112 is an opening, a plurality of strip-shaped connecting portions 114 are provided between the first reflective surface 111 and the second reflective surface 113 to connect the first reflective surface 111 and the second reflective surface 113, thereby enhancing the structural stability of the first optical element 11. One end of the connecting portion 114 is fixed to the clamping end 1110 of the first reflective surface 111, and the other end is fixed to the edge of the second reflective surface 113.

[0042] The second reflective surface 113 is located at the top of the light-emitting side (not shown) of the light-incident cavity 115 . The second reflective surface 113 can effectively and totally reflect the light incident on the second reflective surface 113 to the light source 2 .

[0043] On the plane where the light incident side is located, the orthographic projection of the second reflective surface 113 covers the light source 2, which can prevent the light from directly striking the human eye and causing glare, thereby improving the comfort and safety of the lighting environment.

[0044] On the plane where the light incident side is located, the orthographic projection of the second reflecting surface 113 is within the orthographic projection range of the first reflecting surface 111, which means that a large portion of the light entering the light incident cavity 115 from the light incident side can continue to be received and reflected by the second reflecting surface 113 after being reflected by the first reflecting surface 111, thereby increasing the propagation path and number of reflections of the light in the light incident cavity 115, thereby improving the utilization efficiency of the light.

[0045] The first reflecting surface 111 and the second reflecting surface 113 are both total reflecting surfaces. When light contacts the first reflecting surface 111 and the second reflecting surface 113, it is almost not absorbed or scattered, but is completely reflected back, ensuring that the light emitted by the light source 2 can be utilized to the maximum extent and reducing the waste of light energy.

[0046] In this embodiment, light from light source 2, after striking first reflective surface 111 and second reflective surface 113, returns along its original path and is re-reflected toward light source 2, thereby continuously increasing the light intensity in the central portion. Light is thoroughly mixed within first optical element 11, reducing the appearance of bright and dark spots and achieving more uniform light output.

[0047] In the first optical element 11, the light irradiated to the peripheral surface and the top is totally reflected by the first reflecting surface 111 and the second reflecting surface 113 to the light source 2, forming a Lambert reflection on the light-emitting surface of the light source 2, and the reflected light is superimposed on the light directly emitted by the light source 2 and emitted from the light-emitting portion 112. Otherwise, it continues to reflect in the light-incident cavity 115, so that the light that may have originally escaped can be redirected and emitted. While ensuring that the light-emitting angle is a small angle, multiple reflections help to eliminate bright and dark spots in the light, increase the central light intensity, and make the final emitted light more uniform. In other words, it is necessary to control the light-emitting angle of the light source 2, and only light that meets the preset light-emitting angle can be emitted from the light-emitting portion 112. Light at other angles will be reflected by the first reflecting surface 111 and the second reflecting surface 113 due to hitting the first reflecting surface 111 and the second reflecting surface 113 and then emitted again.

[0048] The second optical element 12 is snapped onto the first reflective surface 111, and the light emitting portion 112 and the second reflective surface 113 are both located inside the second optical element 12, making the entire light distribution assembly 1 more compact. This closed structure can better control the propagation path and reflection direction of light and reduce light waste.

[0049] For details, please refer to Figure 4 As shown, the second optical element 12 includes a third reflective surface 123 and a mating end 121 and an open end 122 at both ends of the third reflective surface 123. The third reflective surface 123 is surrounded by a receiving cavity 124. The light emitting portion 112 and the second reflective surface 113 are both located within the receiving cavity 124. Light emitted from the light emitting portion 112 is reflected by the third reflective surface 123 and then emitted toward the open end 122.

[0050] The mating end 121 is engaged with the first reflective surface 111. Specifically, the mating end 121 is engaged with the engaging end 1110 of the first optical element 11. The engaging end 1110 is provided with a step portion 1111. The step portion 1111 includes a protrusion 1112 extending upward from the outer surface of the first reflective surface 111 and an extension surface 1113 extending from the inner surface of the first reflective surface 111 into the interior of the first optical element 11. A engaging groove 1211 is provided on the side of the mating end 121 facing the protrusion 1112 at a position corresponding to the step portion 1111.

[0051] When installing the first optical element 11 and the second optical element 12, simply aligning the engaging groove 1211 with the stepped portion 1111 and engaging them securely, without the need for complex tools or additional fasteners. Furthermore, during transportation or use of the lamp 100, which may be subject to vibration or external impact, this engaging structure effectively resists these external factors, reducing loosening or falling off caused by vibration.

[0052] A clearance groove 1212 is also provided at the mating end 121, which is engaged with the connecting portion 114 of the first optical component 11 to ensure that the second optical component 12 and the first optical component 11 can be smoothly engaged and fixed, and to a certain extent also plays a role in rapid positioning and installation.

[0053] The third reflective surface 123 is also a total reflection surface, and is used to further reflect the light emitted from the light emitting portion 112 so as to emit it toward a preset irradiation area.

[0054] The third reflective surface 123 has a trumpet-like structure that gradually expands from the mating end 121 to the open end 122. Specifically, the diameter of the mating end 121 is smaller than that of the open end 122. This trumpet-like design allows the third reflective surface 123 to effectively control the propagation path of light. Light striking the third reflective surface 123, after a single reflection, is directly emitted out of the open end 122 of the second optical element 12. This avoids the formation of a focal point after multiple reflections within the second optical element 12, thereby reducing glare.

[0055] The light distribution assembly 1 also includes a light mixing element 13, which is disposed on the side of the open end 122 facing away from the mating end 121 and covers the open end 122. The light mixing element 13 is configured to mix the light reflected by the second optical element 12. The light mixing element 13 can mix light reflected from different angles and paths, which helps reduce light spots and alternating light and dark, and makes the light distribution more uniform within the illumination area.

[0056] See also Figure 3 As shown, the light distribution component 1 also includes a light shielding member 14, which includes an annular light shielding wall 143, and the light shielding wall 143 surrounds a light output cavity 144. The light output cavity 144 includes a light input end 141 and a light output end 142 that are relatively arranged, and the light input end 141 is arranged close to the opening end 122.

[0057] The light shielding element 14 can effectively control the propagation direction of light through the design of its light shielding wall 143. After light enters the light shielding element 14 from the light input end 141, it is guided by the light shielding wall 143 and propagates to the light output end 142.

[0058] The aperture of the light input end 141 is larger than the aperture of the light output end 142, that is, the light shielding wall 143 is a trumpet-shaped structure that gradually shrinks from the light input end 141 to the light output end 142. As the light shielding wall 143 gradually shrinks from the light input end 141 to the light output end 142, the light will gradually be focused into a smaller area during the propagation process, and the light output angle of the lamp 100 will be smaller. This design can significantly improve the directionality of light, allowing the light to be more concentratedly illuminated to the target area, thereby enhancing the lighting effect. At the same time, the trumpet-shaped structure of the light shielding wall 143 can also effectively block unnecessary scattered light and reduce glare. When light passes through the guidance and focusing effect of the light shielding wall 143, it can reduce the light directly incident on the human eye, reducing the risk of glare.

[0059] Furthermore, the light shielding member 14 also includes a light shielding top 145 near the light output end 142. The light shielding top 145 is annular and is arranged around the light shielding wall 143. In this embodiment, the light shielding top 145 and the light shielding wall 143 are integrally formed, and the light shielding top 145 is fixedly connected to the shell 3, thereby fixing the entire light shielding member 14 to the shell 3. The light shielding top 145 and the light shielding wall 143 are both made of light-absorbing materials and have a light-absorbing effect. When errors occur in the various structures of the light distribution component 1 during the processing or installation process, causing some stray light to escape into the shell 3, these stray lights will be absorbed by the light shielding top 145, ultimately reducing the generation of secondary light spots.

[0060] See also Figure 5 As shown, when light from light source 2 is emitted directly to light exit portion 112, it directly passes through light exit portion 112 and reaches third reflective surface 123 of second optical element 12. When light from light source 2 is emitted onto first reflective surface 111 and second reflective surface 113 of first optical element 11, it returns to light source 2 along the original path and is reflected again. This returning portion of light may directly pass through light exit portion 112 and reach third reflective surface 123, or it may be reflected again onto first reflective surface 111 and second reflective surface 113, repeating the cycle. All light rays that reach third reflective surface 123 undergo total internal reflection, first passing through light mixer 13 for mixing, then passing through light shielding element 14 to absorb stray light before being emitted.

[0061] The light distribution component 1 of the present invention is configured to have a first reflective surface 111, a light-emitting portion 112, and a second reflective surface 113 connected in sequence, so that the light emitted by the light source 2 can only be emitted through the light-emitting portion 112 located in the middle, while the light irradiated to the peripheral surface and the top is totally reflected by the reflective surfaces of the first reflective surface 111 and the second reflective surface 113 to the light source 2, forming a Lambert reflection on the light-emitting surface of the light source 2, and the reflected light is superimposed on the light directly emitted by the light source 2 and emitted from the light-emitting portion 112. Otherwise, it continues to reflect in the light-entering cavity 115, so that the light that may have originally escaped can be redirected and emitted. While ensuring that the light-emitting angle is small, multiple reflections help to eliminate bright and dark spots in the light, increase the central light intensity, and make the final emitted light more uniform. By covering the light source 2 with the orthographic projection of the second reflective surface 113 on the plane where the light-entering side is located, the light is prevented from being directly emitted to the human eye, reducing glare.

[0062] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A light distribution component, characterized in that: The optical device comprises a first optical element (11), wherein the first optical element (11) has a light incident cavity (115), and the light incident cavity (115) comprises a first reflection surface (111), a light exit portion (112), and a second reflection surface (113). The first reflecting surface (111) is located on the peripheral surface of the light incident side of the light incident cavity (115) and is configured to totally reflect the light irradiated onto the first reflecting surface (111) to the light source (2); The second reflecting surface (113) is located at the top of the light-emitting side of the light-incident cavity (115) and is configured to totally reflect the light irradiated onto the second reflecting surface (113) to the light source (2); The light emitting portion (112) is arranged between the first reflecting surface (111) and the second reflecting surface (113), and is configured to emit light irradiated thereto.

2. The light distribution assembly according to claim 1, characterized in that: The first optical element (11) is a convoluted structure, and / or the first reflecting surface (111), the second reflecting surface (113) and the light emitting portion (112) are located on the same hemisphere.

3. The light distribution assembly according to claim 1, characterized in that: The light exit portion (112) is a light exit opening or a lens provided on the first optical component (11).

4. The light distribution assembly according to claim 1, wherein: The invention also includes a second optical component (12), wherein the second optical component (12) includes a third reflecting surface (123) and a matching end (121) and an open end (122) at both ends of the third reflecting surface (123); the third reflecting surface (123) is surrounded by a receiving cavity (124); the light emitting portion (112) and the second reflecting surface (113) are both located in the receiving cavity (124); and light emitted from the light emitting portion (112) is reflected by the third reflecting surface (123) and then emitted toward the open end (122).

5. The light distribution assembly according to claim 4, characterized in that: The mating end (121) is snap-connected with the first reflecting surface (111).

6. The light distribution assembly according to claim 4, characterized in that: The caliber of the mating end (121) is smaller than the caliber of the opening end (122).

7. The light distribution assembly according to claim 4, characterized in that: It also includes a light mixing element (13), which is arranged on a side of the open end (122) away from the mating end (121) and covers the open end (122), and is configured to mix the light reflected by the second optical element (12).

8. The light distribution assembly according to claim 4, characterized in that: The invention also includes a light shielding member (14), wherein the light shielding member (14) includes an annular light shielding wall (143), and the light shielding wall (143) is surrounded to form a light output cavity (144). The light output cavity (144) includes a light input end (141) and a light output end (142) that are arranged opposite to each other, and the light input end (141) is arranged close to the opening end (122), and the diameter of the light input end (141) is larger than the diameter of the light output end (142).

9. The light distribution assembly according to claim 1, wherein: In the vertical direction, the first optical element (11) has a first height, the light exit portion (112) has a second height, and the ratio of the first height to the second height ranges from 0.45 to 0.

55.

10. A lamp, characterized in that: It comprises a light source (2), a housing (3) and a light distribution assembly as claimed in any one of claims 1 to 9.

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