Light source diffusion structure and lighting lamp

Abstract

The invention discloses a light source diffusion structure and an illumination lamp, and relates to the technical field of illumination equipment, the light source diffusion structure comprises a diffusion main body, the diffusion main body comprises a light incident side and a light emergent side opposite to the light incident side, the light incident side comprises a first area and a second area, and the first area is adjacent to the second area; the first area is provided with a light control curved surface protruding in the direction away from the light emitting side, so that part of light emitted by the light source is refracted on the light control curved surface and is emitted from the light emitting side at a specific angle, and the specific angle corresponds to the curvature of the light control curved surface; the second area is provided with a plurality of light expanding lenses protruding in the direction away from the light emitting side, so that the other part of light emitted by the light source intersects at least once in the diffusion body and is emitted from the light emitting side in a divergent mode. The light control curved surface with the corresponding curvature can be selected according to actual requirements, so that the irradiation area with the corresponding shape and area is obtained, and the adaptation degree of the illumination lamp is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of lighting devices, and particularly to a light source diffusion structure and a lighting fixture. Background Art

[0002] With the improvement of the quality of life, in order to meet the diverse needs of consumers, manufacturers continuously improve and upgrade the appearance and structure of lighting fixtures to meet the personalized needs of users.

[0003] In the related art, a lighting fixture includes a light source and a diffusion plate. The diffusion plate is used to diffuse the point light source emitted by the light source into a surface light source to improve the uniformity of the light source. However, due to the limitations of the function of the diffusion plate, the shape of the illumination area formed after the light source passes through the diffusion plate is usually circular, resulting in a relatively single shape of the illumination area of the lighting fixture and being unable to meet the usage requirements of specific scenarios. Summary of the Invention

[0004] The present invention discloses a light source diffusion structure and a lighting fixture to solve the problem in the related art that due to the limitations of the function of the diffusion plate, the shape of the illumination area of the lighting fixture is relatively single and cannot meet the usage requirements of specific scenarios.

[0005] To solve the above technical problems, the present invention is implemented as follows:

[0006] In a first aspect, the technical solution of the present invention discloses a light source diffusion structure, including: a diffusion main body;

[0007] The diffusion main body includes a light incident side and a light exit side disposed opposite to the light incident side. The light incident side includes a first region and a second region, and the first region is adjacent to the second region;

[0008] The first region is provided with a light control curved surface that protrudes in a direction away from the light exit side, so that some of the light rays emitted by the light source are refracted on the light control curved surface and exit from the light exit side at a specific angle, where the specific angle corresponds to the curvature of the light control curved surface;

[0009] The second region is provided with a plurality of light diffusing lenses, and the plurality of light diffusing lenses all protrude in a direction away from the light exit side, so that another part of the light rays emitted by the light source cross at least once in the diffusion main body and exit from the light exit side in a divergent manner.

[0010] Optionally, the diffusion main body is an annular structure, the first region is located on the outer side of the diffusion main body, and the second region is located on the inner side of the diffusion main body;

[0011] The curvature of the light control surface near the outer side of the diffusion body is smaller than that near the inner side of the diffusion body, so that the refraction angle of the light entering the light control surface near the outer side of the diffusion body is smaller than that near the inner side of the diffusion body.

[0012] Optionally, there is a contact surface between the edge of the light control surface near the inner side of the diffusion body and the light diffusing lens at the edge of the second region, and the contact surface is perpendicular to the plane where the light output side is located.

[0013] Optionally, a plurality of the light diffusing lenses are arranged in an array in the second region.

[0014] Optionally, the curvatures of a plurality of the light diffusing lenses are the same.

[0015] Optionally, the second region includes at least two sub-regions, and at least two of the sub-regions are distributed along the circumferential direction of the inner side of the diffusion body, and the curvatures of the light diffusing lenses located in different sub-regions are different.

[0016] In a second aspect, the technical solution of the present invention discloses a lighting fixture, and the disclosed lighting fixture includes a housing, a light source, and the above-mentioned light source diffusion structure;

[0017] The housing is provided with an inner cavity, both the light source and the light source diffusion structure are arranged in the inner cavity, and the light source is arranged near the light input side.

[0018] Optionally, the lighting fixture further includes a collimating lens;

[0019] The collimating lens is arranged between the light source and the light source diffusion structure, the collimating lens includes a light input part and a light output part, the light input part is close to the light source, the light output part is close to the light source diffusion structure, and the collimating lens is used for conducting the light emitted by the light source to the light source diffusion structure.

[0020] Optionally, the light input part is provided with a light collecting groove, the light collecting groove includes a groove bottom and a groove wall, and the groove bottom is provided with a refraction surface which protrudes towards the light source side;

[0021] The light emitted by the light source enters the light collecting groove, is refracted by the groove bottom and the groove wall to the inside of the collimating lens, and exits as a parallel light beam from the light output part.

[0022] Optionally, the housing, the light source, and the light source diffusion structure are all annular structures, the first region is close to the outer side of the housing, and the second region is close to the inner side of the housing;

[0023] The light rays of the light source entering the first region are emitted from the light-emitting side at a specific angle, and the light rays of the light source entering the second region are emitted from the light-emitting side in a divergent manner.

[0024] The technical solution adopted by the present invention can achieve the following technical effects:

[0025] In the light source diffusion structure disclosed by the technical solution of the present invention, the diffusion main body includes a light-incident side and a light-emitting side arranged opposite to the light-incident side. The light-incident side includes a first region and a second region, and the first region is adjacent to the second region. The first region is provided with a light control curved surface protruding in a direction away from the light-emitting side, so that some of the light rays emitted by the light source are refracted on the light control curved surface and are emitted from the light-emitting side at a specific angle, wherein the specific angle corresponds to the curvature of the light control curved surface. The second region is provided with a plurality of light diffusion lenses protruding in a direction away from the light-emitting side, so that another part of the light rays emitted by the light source cross at least once in the diffusion main body and are emitted from the light-emitting side in a divergent manner. The light control curved surface with a corresponding curvature can be selected according to actual needs to obtain an irradiation region with a corresponding shape and area, thereby improving the adaptability of the lighting fixture to the use scenario. At the same time, the uniformity of the illuminance of the irradiation region can also be further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a cross-sectional view of the light source diffusion structure disclosed in the embodiment of the present invention;

[0027] Figure 2 It is an optical path diagram of the light source diffusion structure disclosed in the embodiment of the present invention;

[0028] Figure 3 It is an exploded view of the lighting fixture disclosed in the embodiment of the present invention;

[0029] Figure 4 It is a schematic structural diagram of the light source diffusion structure disclosed in the embodiment of the present invention;

[0030] Figure 5 It is an enlarged view of part A in the appendix of the specification of the present invention Figure 4 in the present invention.

[0031] Description of the reference numerals:

[0032] 100 - Light source diffusion structure, 110 - Diffusion main body, 101 - Light-incident side, 1011 - First region, 1012 - Second region, 102 - Light-emitting side, 120 - Light control curved surface, 130 - Light diffusion lens;

[0033] 200 - Housing;

[0034] 300 - Light source;

[0035] 400 - Collimating lens, 410 - Light incident part, 411 - Light collecting groove, 412 - Bottom of the groove, 413 - Wall of the groove, 420 - Light emitting part. Detailed implementation manners

[0036] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0037] The terms "first", "second", etc. in the description and claims of the present invention are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are usually of the same type, and the number of objects is not limited. For example, the first object can be one or multiple.

[0038] The following will detail the technical solutions disclosed in each embodiment of the present invention in conjunction with the drawings.

[0039] Please refer to Figures 1 to 5 , the technical solution of the present invention discloses a light source diffusion structure 100 for diffusing and mixing the light rays emitted by a light source 300. The disclosed light source diffusion structure 100 may include a diffusion body 110, and the diffusion body 110 can be made of materials such as glass and plastic. The diffusion body 110 includes an incident light side 101 and an outgoing light side 102 disposed opposite to the incident light side 101. The light rays emitted by the light source 300 enter the diffusion body 110 through the incident light side 101 and are emitted from the outgoing light side 102, thereby forming an irradiation area of a certain shape on the surface of the irradiated object. The shape of the irradiation area can be circular, wedge-shaped, and other shapes. The incident light side 101 includes a first area 1011 and a second area 1012, and the first area 1011 is adjacent to the second area 1012. The light rays emitted by the light source 300 can at least partially cover the first area 1011 and the second area 1012. Figure 1 is a cross-sectional view of the light source diffusion structure 100. The first area 1011 and the second area 1012 can be distributed in the cross-sectional direction or in a direction perpendicular to the cross-section.

[0040] A light control curved surface 120 is provided in the first region 1011. The light control curved surface 120 protrudes in a direction away from the light exit side 102. The material used to form the light control curved surface 120 can be the same as that of the diffusion body 110, and is also made of materials such as glass and plastic. When a part of the light from the light source 300 irradiates the light control curved surface 120, it will enter the diffusion body 110 after refraction on the light control curved surface 120 and be emitted from the light exit side 102 at a specific angle, thereby forming an irradiation area with a specific shape and area on the illuminated object.

[0041] It should be noted that the light is emitted from the light exit side 102 at a specific angle, and this specific angle corresponds to the curvature of the light control curved surface 120. When the light irradiates a position with a larger curvature of the light control curved surface 120, the corresponding specific angle is larger, that is, the light emitted from the light source 300 undergoes a large-angle refraction after passing through the light control curved surface 120; when the light irradiates a position with a smaller curvature of the light control curved surface 120, the corresponding specific angle is smaller, that is, the light emitted from the light source 300 undergoes a small-angle refraction after passing through the light control curved surface 120; when the light irradiates a position where the curvature of the light control curved surface 120 is zero, the light source 300 emits perpendicularly without refraction. By controlling the curvature of each part of the light control curved surface 120, when the light irradiates the light control curved surface 120, a refraction at a specific angle can be achieved, thereby forming an irradiation area with a specific shape and area on the illuminated object, so that a good match is achieved between the irradiation area and the lighting scene. The curvature of each part of the light control curved surface 120 can be designed according to the usage requirements of different lighting scenes.

[0042] In the second region 1012 on the light incident side 101, a plurality of light diffusing lenses 130 are also provided. The plurality of light diffusing lenses 130 all protrude in a direction away from the light exit side 102. The material of the light diffusing lenses 130 can also be the same as that of the diffusion body 110. The number of the light diffusing lenses 130 can be three or more, and the specific number can be selected according to the actual diffusion and light mixing requirements. The light emitted from the light source 300 can generally be divided into two parts. One part irradiates the light control curved surface 120, and the other part of the light irradiates the plurality of light diffusing lenses 130. It will enter the diffusion body 110 after refraction on the surface of the light diffusing lenses 130, and will cross at least once in the diffusion body 110 to achieve a light mixing effect, and then the light is emitted from the light exit side 102 in a divergent manner. After the diffusion and light mixing by the light diffusing lenses 130, the uniformity of the emitted light is improved, the formation of uneven light spots on the illuminated object is avoided, and the lighting effect is further improved.

[0043] As described above, in the light source diffusion structure 100 disclosed by the technical solution of the present invention, by providing a light control curved surface 120 and a plurality of light diffusing lenses 130 on the light incident side 101 of the diffusion main body 110, the effects of light mixing and directional diffusion on the light emitted by the light source 300 can be achieved. The light control curved surface 120 with a corresponding curvature can be selected according to the usage requirements of different lighting scenarios to obtain an illumination area with a corresponding shape and area, thereby improving the adaptability of the lighting fixture to the lighting scenario. At the same time, the uniformity of the illuminance in the illumination area can also be further improved.

[0044] Furthermore, as Figures 1 to 5 shown, the diffusion main body 110 is of an annular structure. The first area 1011 is located on the outer side of the diffusion main body 110, and the second area 1012 is located on the inner side of the diffusion main body 110. It can be understood that the first area 1011 is arranged around the second area 1012. The annular diffusion main body 110 can be applied to lighting fixtures such as ceiling lamps and table lamps. A part of the light of the light source 300 will be incident on the first area 1011. After the directional light diffusion of the light control curved surface 120, the light emitted from the light exit side 102 is mainly concentrated on the periphery of the illumination area and can be used for supplementary lighting or ambient lighting. Another part of the light of the light source 300 will be incident on the second area 1012. After the light mixing and diffusion of the light diffusing lens 130, the light emitted from the light exit side 102 is mainly concentrated inside the illumination area and can be used for concentrated lighting.

[0045] Since the outer side of the annular diffusion main body 110 needs to contact structural components such as the housing 200, if the light is refracted at a large angle on the outer side of the diffusion main body 110, the refracted light is likely to be incident on structural components such as the housing 200, resulting in partial absorption of the light and affecting the lighting efficiency. Therefore, the curvature of the light control curved surface 120 near the outer side of the diffusion main body 110 can be made smaller than the curvature of the light control curved surface 120 near the inner side of the diffusion main body 110, so that the refraction angle of the light incident on the light control curved surface 120 near the outer side of the diffusion main body 110 is smaller than that near the inner side of the diffusion main body 110, avoiding large-angle refraction on the outer side of the diffusion main body 110, reducing the absorption of the refracted light by structural components such as the housing 200, and thus improving the lighting efficiency.

[0046] In some optional embodiments, as Figure 1 and Figure 2As shown, there is a contact surface between the edge of the light control curved surface 120 close to the inner side of the diffusion main body 110 and the light diffusion lens 130 located at the edge of the second region 1012. It should be noted that the light diffusion lens 130 located at the edge of the second region 1012 refers to the light diffusion lens 130 located at the junction of the first region 1011 and the second region 1012 among several light diffusion lenses 130. The contact surface between the light control curved surface 120 and the light diffusion lens 130 is perpendicular to the plane where the light exit side 102 is located. When the light emitted by the light source 300 shines on the contact surface, it will exit perpendicularly from the plane where the light exit side 102 is located, and will not be refracted at a large angle due to the existence of the contact surface, thereby reducing the probability that the refracted light is absorbed by structural members such as the housing 200, and further improving the lighting efficiency.

[0047] Furthermore, as Figures 1 to 5 shown, the light emitted by the light source 300 towards the second region 1012 will be diffused and mixed by several light diffusion lenses 130. If the several light diffusion lenses 130 are arranged randomly, it will affect the diffusion and mixing effects. Therefore, the several light diffusion lenses 130 can be arranged in an array in the second region 1012, which can uniformly diffuse and mix the light emitted by the light source 300 towards the second region 1012, thereby improving the consistency of the emitted light, and further improving the uniformity of the illuminance in the illumination area.

[0048] In some optional embodiments, as Figure 5 shown, the curvatures of the several light diffusion lenses 130 are the same. On the one hand, it is convenient for the fabrication and molding of the several light diffusion lenses 130; on the other hand, it can further improve the consistency of the emitted light and the uniformity of the illuminance in the illumination area.

[0049] In some optional embodiments, the second region 1012 includes at least two sub-regions, and the areas of the at least two sub-regions can be the same or different. The at least two sub-regions can be distributed along the circumferential direction of the inner side of the diffusion main body 110, or can be distributed along the radial direction of the second region 1012, similar to the distribution manner of the first region 1011 and the second region 1012.

[0050] There are also differences in the diffusion and mixing effects of light diffusion lenses 130 with different curvatures. In some lighting scenarios, it is necessary to form a differentiated illumination area on the illuminated object. Therefore, the curvatures of the light diffusion lenses 130 located in different sub-regions can be made different. When the light source 300 shines on different sub-regions, there will also be differences in the diffusion and mixing effects, so that differentiation can be formed in the illumination area to meet personalized usage requirements.

[0051] Please refer to Figures 1 to 5, the technical solution of the present invention also discloses a lighting fixture. The disclosed lighting fixture can be a ceiling lamp, a chandelier, a spotlight, a floor lamp, a downlight, a table lamp, etc. Specifically, the lighting fixture can include a housing 200, a light source 300, and the above-mentioned light source diffusion structure 100. The housing 200 is provided with an inner cavity, and both the light source 300 and the light source diffusion structure 100 are arranged in the inner cavity. The housing 200 can protect the light source 300 and the light source diffusion structure 100, and at the same time prevent dust and other sundries from invading the light source 300 and the light source diffusion structure 100. Part of the housing 200 can be made of a light-transmitting optical material so that the light emitted from the light-emitting side 102 can pass through the housing 200 and irradiate the object to be illuminated.

[0052] The light source 300 can be an incandescent lamp, an LED (Light Emitting Diode), etc., and the light source 300 is arranged close to the light-incident side 101 so that the light emitted by the light source 300 can be completely incident on the light source diffusion structure 100 as much as possible, thereby improving the lighting efficiency.

[0053] As can be seen from the above description, in the lighting fixture disclosed by the technical solution of the present invention, the diffusion main body 110 includes a light-incident side 101 and a light-emitting side 102 arranged opposite to the light-incident side 101. The light-incident side 101 includes a first region 1011 and a second region 1012, and the first region 1011 is adjacent to the second region 1012; a light control curved surface 120 protruding in a direction away from the light-emitting side 102 is provided in the first region 1011 so that part of the light emitted by the light source 300 is refracted on the light control curved surface 120 and exits from the light-emitting side 102 at a specific angle, where the specific angle corresponds to the curvature of the light control curved surface 120. A plurality of light diffusing lenses 130 protruding in a direction away from the light-emitting side 102 are provided in the second region 1012 so that another part of the light emitted by the light source 300 crosses at least once in the diffusion main body 110 and exits from the light-emitting side 102 in a divergent manner. The light control curved surface 120 with a corresponding curvature can be selected according to actual needs to obtain an irradiation area with a corresponding shape and area, thereby improving the adaptability of the lighting fixture to the use scenario. At the same time, the uniformity of the illuminance of the irradiation area can also be further improved.

[0054] Furthermore, as Figure 1 and Figure 2As shown, the lighting fixture may further include a collimating lens 400, which is disposed between the light source 300 and the light source diffusing structure 100. The collimating lens 400 can be made of materials such as glass and plastic. The collimating lens 400 includes a light incident portion 410 and a light exiting portion 420. The light incident portion 410 is close to the light source 300 and is used to receive the light emitted by the light source 300. The light exiting portion 420 is close to the light source diffusing structure 100 and is used to conduct the light received by the light incident portion 410 to the light source diffusing structure 100. By providing the collimating lens 400, the utilization rate of the light source 300 can be improved, so that the light emitted by the light source 300 is as completely as possible directed towards the light source diffusing structure 100, thereby improving the lighting efficiency.

[0055] In some alternative embodiments, such as Figure 1 and Figure 2 As shown, the light incident portion 410 is provided with a light collecting groove 411. The light collecting groove 411 includes a groove bottom 412 and a groove wall 413. The groove bottom 412 is provided with a refraction surface, which protrudes towards the light source 300 side. Since the light emitted by the light source 300 is radial, a part of the radial light irradiates the groove bottom 412 and, after being refracted by the refraction surface, exits from the light exiting portion 420 as a parallel light beam. The groove wall 413 is connected to the groove bottom 412, and the groove wall 413 is distributed in a flared shape. The area of the groove opening of the light collecting groove 411 is larger than the area of the groove bottom 412, which is convenient for gathering light. Another part of the radial light irradiates the groove wall 413, is refracted by the groove wall 413 into the collimating lens 400, and after only being reflected by the inner side wall of the collimating lens 400, exits from the light exiting portion 420 as a parallel light beam.

[0056] By providing the collimating lens 400, the radial light emitted by the light source 300 can be refracted and reflected so that it exits from the light exiting portion 420 as a parallel light beam, thereby enabling the light source 300 to be directed towards the light source diffusing structure 100, and further improving the utilization rate and lighting efficiency of the light source 300.

[0057] In some alternative embodiments, such as Figures 1 to 5 As shown, the housing 200, the light source 300, and the light source diffusing structure 100 are all annular structures. The first region 1011 is close to the outer side of the housing 200, and the second region 1012 is close to the inner side of the housing 200. The light emitted by the light source 300 into the first region 1011 is refracted on the light control surface 120 and then enters the diffusion body 110, and is emitted from the light exit side 102 at a specific angle, thereby forming an irradiation area with a specific shape and area on the illuminated object. The light emitted by the light source 300 into the second region 1012 is refracted on the surface of the light diffusing lens 130 and then enters the diffusion body 110, and at least one crossing occurs in the diffusion body 110 to achieve a light mixing effect, and then the light is emitted from the light exit side 102 in a divergent manner.

[0058] In the above embodiments of the present invention, the differences between the various embodiments are mainly described. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. For the sake of brevity in writing, they will not be elaborated here.

[0059] The embodiments of the present invention have been described above in conjunction with the accompanying drawings. However, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms without departing from the spirit of the present invention and the scope protected by the claims, and all of them fall within the protection scope of the present invention.

Claims

1. A light source diffusion structure, It is characterized in that include: a diffusion body (110); The diffusion body (110) comprises a light incident side (101) and a light exit side (102) arranged opposite to the light incident side (101), the light incident side (101) comprises a first area (1011) and a second area (1012), and the first area (1011) is adjacent to the second area (1012); The first region (1011) is provided with a light-controlling curved surface (120), the light-controlling curved surface (120) being convex in a direction away from the light-exiting side (102), so that part of the light emitted by the light source (300) is refracted on the light-controlling curved surface (120) and is emitted from the light-exiting side (102) at a specific angle, wherein the specific angle corresponds to the curvature of the light-controlling curved surface (120); The second area (1012) is provided with a plurality of light diffusing lenses (130), and the plurality of light diffusing lenses (130) are all protruding in a direction away from the light emitting side (102), so that another part of the light emitted by the light source (300) crosses at least once in the diffusion body (110) and is emitted from the light emitting side (102) in a divergent shape.

2. The light source diffusion structure according to claim 1, It is characterized in that The diffusion body (110) is an annular structure, the first region (1011) is located on the outside of the diffusion body (110), and the second region (1012) is located on the inside of the diffusion body (110); The curvature of the light-controlling curved surface (120) near the outer side of the diffusion body (110) is smaller than the curvature near the inner side of the diffusion body (110), so that the refraction angle of light incident on the light-controlling curved surface (120) near the outer side of the diffusion body (110) is smaller than the refraction angle near the inner side of the diffusion body (110).

3. The light source diffusion structure according to claim 2, It is characterized in that A contact surface is provided between the edge of the light-controlling curved surface (120) close to the inner side of the diffusion body (110) and the light-expanding lens (130) located at the edge of the second area (1012), and the contact surface is perpendicular to the plane where the light-emitting side (102) is located.

4. The light source diffusion structure according to claim 2, It is characterized in that A plurality of the light expansion lenses (130) are distributed in the second area (1012) in an array.

5. The light source diffusion structure according to claim 4, It is characterized in that The curvatures of the plurality of light expansion lenses (130) are all the same.

6. The light source diffusion structure according to claim 4, It is characterized in that The second region (1012) includes at least two sub-regions, and the at least two sub-regions are distributed along the circumference of the inner side of the diffusion body (110), and the curvatures of the light expansion lenses (130) located in different sub-regions are different.

7. A lighting fixture, It is characterized in that It comprises a housing (200), a light source (300) and the light source diffusion structure (100) according to any one of claims 1 to 6; The housing (200) is provided with an inner cavity, the light source (300) and the light source diffusion structure (100) are both arranged in the inner cavity, and the light source (300) is arranged close to the light incident side (101).

8. The lighting fixture according to claim 7, It is characterized in that Also includes a collimating lens (400); The collimating lens (400) is arranged between the light source (300) and the light source diffusion structure (100), and the collimating lens (400) comprises a light input portion (410) and a light output portion (420), wherein the light input portion (410) is close to the light source (300), and the light output portion (420) is close to the light source diffusion structure (100), and the collimating lens (400) is used to transmit light emitted by the light source (300) to the light source diffusion structure (100).

9. The lighting fixture according to claim 8, It is characterized in that The light incident portion (410) is provided with a light receiving groove (411), the light receiving groove (411) comprising a groove bottom (412) and a groove wall (413), the groove bottom (412) is provided with a refractive curved surface, and the refractive curved surface is convex toward the light source (300); The light emitted by the light source (300) enters the light receiving groove (411), is refracted through the groove bottom (412) and the groove wall (413) to the interior of the collimating lens (400), and is emitted from the light emitting portion (420) as a parallel light beam.

10. The lighting fixture according to claim 7, It is characterized in that The shell (200), the light source (300) and the light source diffusion structure (100) are all annular structures, the first area (1011) is close to the outside of the shell (200), and the second area (1012) is close to the inside of the shell (200); The light emitted by the light source (300) into the first area (1011) is emitted from the light emitting side (102) at a specific angle, and the light emitted by the light source (300) into the second area (1012) is emitted from the light emitting side (102) in a divergent manner.

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