Lens and luminaire

Abstract

The application discloses a lens and a lamp. The lamp comprises a light emitting part, and the lens comprises a lens body. The lens body is arranged on the side of the light emitting part facing the ceiling and is arranged opposite to the ceiling along a first direction. Along the first direction, the lens body comprises a first side wall surface facing the light emitting part and a second side wall surface away from the light emitting part. The second side wall surface is provided with a first light guide structure and a second light guide structure. The first side wall surface is configured to refract the light emitted by the light emitting part to the second side wall surface. The first light guide structure can refract part of the light to the side of the lens body facing the ceiling along the first direction. The second light guide structure can reflect part of the light to the outer circumferential side of the lens body along the second direction, so that the light intensity of the outer circumferential side of the lens body is greater than the light intensity of the side of the lens body facing the ceiling. The scheme can effectively avoid the shadow and overexposure phenomenon of the upper ceiling where the lamp is located, and improve the light illumination efficiency and illumination effect.

Description

Technical Field

[0001] This invention relates to the field of ceiling light technology, and in particular to a lens and a lamp. Background Technology

[0002] Ceiling lights are used for indoor lighting. In the existing technology, ceiling lights use bottom surface light emission, which makes the illuminated area cone-shaped, resulting in glaring light. In addition, the ceiling area above the ceiling light will cast shadows, making it difficult to provide full illumination for the indoor space.

[0003] In related technologies, ceiling lights incorporate a back-side auxiliary light source in addition to the lower surface illumination. This back-side auxiliary light structure directs some light onto the ceiling first, then reflects it into the room. Specifically, a round, wide-angle lens is placed on the LED bulb flush with the base of the ceiling light to guide the light at a wide angle onto the ceiling and then reflect it to other corners of the room. However, if the LED bulb is too close to the ceiling, it can overexpose the ceiling, causing glare and discomfort for the user. Alternatively, a lens can be placed in the center of the ceiling light's outer frame, but this method results in a small luminous area, and with higher LED wattage, the light can be quite glaring and overexpose the surrounding ceiling area. In short, existing ceiling lights have poor lighting performance. Summary of the Invention

[0004] The main objective of this invention is to provide a lens and lamp that aims to solve the technical problem of poor lighting effect in existing lamps.

[0005] To achieve the above objectives, a first aspect of the present invention provides a lens for a lighting fixture adapted for mounting on a ceiling, the lighting fixture including a light-emitting element, and the lens comprising:

[0006] The lens body is disposed on the side of the light-emitting element facing the ceiling and arranged opposite to the ceiling along a first direction. Along the first direction, the lens body includes a first side wall facing the light-emitting element and a second side wall facing away from the light-emitting element. The second side wall is provided with a first light guide structure and a second light guide structure.

[0007] The first sidewall is configured to refract the light emitted by the light-emitting element to the second sidewall. The first light guide structure refracts a portion of the light to the side of the lens body facing the ceiling along the first direction. The second light guide structure reflects another portion of the light to the outer periphery of the lens body along the second direction, so that the light intensity on the outer periphery of the lens body along the second direction is greater than the light intensity on the side of the lens body facing the ceiling along the first direction. The second direction intersects the first direction.

[0008] In some embodiments, the first light guide structure includes a groove, the second sidewall has a first wall segment, the first wall segment together defining the groove, the groove opening facing away from the light-emitting element, and a portion of the light can be refracted through the groove to the side of the lens body facing the ceiling along the first direction.

[0009] In some embodiments, the second light guide structure includes a second wall segment located on the outer periphery of the first light guide structure, the second wall segment being connected to the first wall segment, and the lens body having a first axis parallel to the first direction; wherein the angle between the second wall segment and the first axis is an acute angle, and a portion of the light rays can be reflected via the second wall segment to the outer periphery of the lens body along the second direction.

[0010] In some embodiments, the second light guide structure further includes a third wall segment located on the inner periphery of the first light guide structure, the third wall segment being connected to the first wall segment, and the lens having a first axis parallel to the first direction; wherein the angle between the third wall segment and the first axis is an acute angle, and a portion of the light rays can be reflected via the third wall segment to the outer periphery of the lens body along the second direction.

[0011] In some embodiments, the luminaire includes a plurality of light-emitting elements, the lens body is annular, the lens body is provided with a receiving groove for accommodating each of the light-emitting elements, the receiving groove is arranged toward each of the light-emitting elements, and the light-emitting elements are arranged at intervals within the receiving groove.

[0012] In some embodiments, the first light guide structure includes a first wall segment, the second light guide structure includes a second wall segment and a third wall segment, the second wall segment and the third wall segment are respectively connected to opposite ends of the first wall segment, and the lens has a first axis parallel to the first direction; and

[0013] The angle between the second wall segment and the first axis is A, and the angle between the third wall segment and the first axis is B, wherein the second wall segment and the third wall segment satisfy: 0° < B < A < 90°; and / or,

[0014] Along the first direction, the height of the second wall segment is H1, and the height of the third wall segment is H2, wherein the second wall segment and the third wall segment satisfy: H1 > H2.

[0015] In some embodiments, the first sidewall includes a fourth wall segment and a fifth wall segment connected to each other, the fifth wall segment being located outside the fourth wall segment, and the fourth wall segment and the first light guide structure being arranged opposite to each other along the first direction;

[0016] The lens has a first axis parallel to the first direction, the fourth wall segment forms an angle C with the first axis, the fifth wall segment forms an angle D with the first axis, and the fourth wall segment and the fifth wall segment satisfy: 45°≤C<D<90°.

[0017] In some embodiments, the lens body is provided with a first connecting structure, the first connecting structure being adapted to be threaded to the base of the lamp, and the side of the lens body opposite to the first connecting structure is provided with a plurality of interconnected sawtooth structures, the sawtooth structures being used to reflect and refract the light emitted by the light-emitting element.

[0018] In some embodiments, the lens body is provided with a second connection structure, the second connection structure including a first hook, the base being provided with a first slot, and the first hook being adapted to pass through and engage with the first slot.

[0019] A second aspect of the present invention provides a lamp, the lamp comprising:

[0020] The lens as described in the above embodiments; and,

[0021] Base, connected to the lens;

[0022] The light-emitting element is connected to the base.

[0023] Compared with the prior art, the beneficial effects of the present invention include:

[0024] In the technical solution of this invention, the lens includes a lens body. The lens body is disposed on the side of the light-emitting element facing the ceiling and is arranged opposite to the ceiling along a first direction. Along the first direction, the lens body includes a first sidewall facing the light-emitting element and a second sidewall facing away from the light-emitting element. The second sidewall is provided with a first light-guiding structure and a second light-guiding structure. In the prior art, to prevent shadows from appearing on the top ceiling area of ​​the ceiling light, the ceiling light is equipped with backlighting. However, when the lamp beads are close to the ceiling and the luminous power is high, the top ceiling of the ceiling light will be overexposed, resulting in glaring light and poor lighting effect. In this solution, the first sidewall of the lens can refract the light emitted by the light-emitting element to the second sidewall. The first light-guiding structure of the second sidewall can refract a portion of the light to the side of the lens body facing the ceiling along the first direction, and the second light-guiding structure can reflect another portion of the light to the outer periphery of the lens body along the second direction, so that the light intensity on the outer periphery of the lens body along the second direction is greater than the light intensity on the side of the lens body facing the ceiling along the first direction. In other words, a lens can guide a small amount of light to the side of the lens facing the ceiling, avoiding shadows and overexposure on the ceiling above the light fixture. A lens can also guide the majority of light to the outer periphery of the lens along the second direction, effectively improving the lighting efficiency and effect. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of a lamp according to an embodiment of the present invention; wherein, the cover, top base, and outer shell are shown;

[0027] Figure 2 This is a cross-sectional view of a lamp fixture according to an embodiment of the present invention;

[0028] Figure 3 for Figure 2 A magnified view of a portion at point a; showing the lens, base, and light-emitting element, etc.

[0029] Figure 4 This is an exploded schematic diagram of a lamp fixture according to one embodiment of the present invention;

[0030] Figure 5 for Figure 4 A partially enlarged schematic diagram at point b; showing the first slot and connecting hole of the base, etc.

[0031] Figure 6 This is a partial schematic diagram of a lens according to an embodiment of the present invention; wherein, a first connecting structure, a second connecting structure, a groove, a receiving groove, and a sawtooth structure are shown;

[0032] Figure 7 This is a schematic diagram of a lens guiding light emitted by a light-emitting element in one embodiment of the present invention; wherein, the dashed line represents light, and a few light rays are guided by the lens away from the light-emitting element, while most light rays are guided by the outer periphery of the lens.

[0033] Figure 8 This is a schematic diagram of the cross-section of a lens according to an embodiment of the present invention.

[0034] Explanation of icon numbers:

[0035] Lens 10;

[0036] Lens body 100;

[0037] First side wall 110; Fourth wall segment 111; Fifth wall segment 112; Eighth wall segment 113;

[0038] Second side wall 120; First wall segment 121; Second wall segment 122; Third wall segment 123; Sixth wall segment 124; Seventh wall segment 125;

[0039] First light guide structure 130; Groove 131;

[0040] Second light guide structure 140;

[0041] First axis 150;

[0042] Reception tank 160;

[0043] First connection structure 170;

[0044] 180-degree serrated structure;

[0045] Second connecting structure 190; First latch 191;

[0046] 20 lamps;

[0047] Light-emitting component 201;

[0048] Base 202; First slot 2021; Connecting hole 2022;

[0049] Cover 203;

[0050] Top seat 204;

[0051] Casing 205;

[0052] First direction X; second direction Y.

[0053] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0054] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0055] The first aspect of this invention provides a lens 10 for use with a lamp 20. The lens 10 effectively prevents shadows and overexposure on the ceiling where the lamp 20 is located, improving lighting efficiency and effect. It should be noted that the lens 10 can be used with ceiling lights, pendant lights, or wall lights, etc. This embodiment uses a ceiling light as an example for explanation. The lamp 20 includes a light-emitting element 201 and can be mounted on the ceiling. The following refers to... Figures 1 to 8The lens 10 of the present application embodiment is described below. Specifically, the lens 10 includes a lens body 100.

[0056] Reference Figure 3 and Figure 4 The lens body 100 is located on the side of the light-emitting element 201 facing the ceiling. (See reference...) Figure 3 The orientation, that is, the lens body 100 can be positioned above the light-emitting element 201. To facilitate description and understanding of the specific arrangement orientation of the lens 10, a first direction X is defined. The lens body 100 is arranged opposite the ceiling along the first direction X, as shown in the reference... Figure 4 Orientation, the first direction X can be up or down.

[0057] The structural configuration of the lens body 100 is described below. Along the first direction X, refer to... Figure 6 In terms of orientation, specifically along the vertical direction, the lens body 100 includes a first sidewall 110 and a second sidewall 120 arranged opposite to each other. The first sidewall 110 is the side of the lens body 100 facing the light-emitting element 201, and the second sidewall 120 is the side of the lens body 100 facing away from the light-emitting element 201. (Refer to...) Figure 6 The orientation, that is, the lower wall of the lens body 100 is the first side wall 110, and the upper wall of the lens body 100 is the second side wall 120. The second side wall 120 is provided with a first light guide structure 130 and a second light guide structure 140. Both the first light guide structure 130 and the second light guide structure 140 are used to guide the output direction of light, but the structures of the first light guide structure 130 and the second light guide structure 140 are different.

[0058] The following describes the specific process of light guiding by lens 10. (Refer to...) Figure 7 The first sidewall 110 can refract the light emitted by the light-emitting element 201 to the second sidewall 120, thereby facilitating subsequent directional guidance of the light. The first light guide structure 130 can refract a portion of the light to the side of the lens body 100 facing the ceiling along the first direction X, and the second light guide structure 140 can reflect another portion of the light to the outer periphery of the lens body 100 along the second direction Y, so that the light intensity on the outer periphery of the lens body 100 along the second direction Y is greater than the light intensity on the side of the lens body 100 facing the ceiling along the first direction X. (Refer to...) Figure 7 The orientation refers to the fact that the first light guide structure 130 can refract a small amount of light to the upper side of the lens body 100 along the vertical direction towards the ceiling, while the second light guide structure 140 can reflect the majority of light to the outer periphery of the lens body 100 along the horizontal direction. It can be understood that the amount of light guided by the first light guide structure 130 and the second light guide structure 140 can be determined by the brightness of their respective areas.

[0059] It should be noted that the second direction Y intersects the first direction X. In some embodiments, the second direction Y may be perpendicular to the first direction X. In other embodiments, the second direction Y may be at a non-perpendicular angle to the first direction X. This application embodiment uses the example of the second direction Y being perpendicular to the first direction X for illustration, referring to... Figure 3 Orientation, that is, the lens 10 can reflect most of the light emitted by the light-emitting element 201 to the periphery of the lens 10 along the horizontal direction.

[0060] In the technical solution of this invention, the lens 10 includes a lens body 100. The lens body 100 is disposed on the side of the light-emitting element 201 facing the ceiling and is arranged opposite to the ceiling along a first direction X. Along the first direction X, the lens body 100 includes a first side wall 110 facing the light-emitting element 201 and a second side wall 120 facing away from the light-emitting element 201. The second side wall 120 is provided with a first light guide structure 130 and a second light guide structure 140. In the prior art, to prevent the ceiling area above the ceiling light from being shadowed, the ceiling light is backlit. However, when the lamp is close to the ceiling and the luminous power is high, the ceiling above the ceiling light will be overexposed, resulting in glaring light and poor lighting effect. In this solution, the first side wall 110 of the lens 10 can refract the light emitted by the light-emitting element 201 to the second side wall 120. The first light guide structure 130 of the second sidewall 120 can refract a portion of the light to the side of the lens body 100 facing the ceiling along the first direction X, and the second light guide structure 140 can reflect another portion of the light to the outer periphery of the lens body 100 along the second direction Y, so that the light intensity on the outer periphery of the lens body 100 along the second direction Y is greater than the light intensity on the side of the lens body 100 facing the ceiling along the first direction X. In other words, the lens 10 can guide a small portion of the light to the side of the lens 10 facing the ceiling, avoiding shadows and overexposure on the ceiling above the luminaire 20. The lens 10 can also guide the majority of the light to the outer periphery of the lens 10 along the second direction Y, effectively improving the lighting efficiency and effect.

[0061] Reference Figures 6 to 8 The specific configuration of the first light guide structure 130 is described below. In some embodiments, the first light guide structure 130 includes a groove 131. The second sidewall 120 has a first wall segment 121, which together define the groove 131. The opening of the groove 131 faces away from the light-emitting element 201, as shown in the figure. Figure 6In terms of orientation, the opening of the groove 131 faces upward, allowing a small amount of light to be refracted through the groove 131 to the side of the lens body 100 facing the ceiling along the first direction X. In other embodiments, the first light guide structure 130 includes a truncated pyramid structure protruding from the second sidewall 120. This truncated pyramid structure has multiple light-guiding bevels, allowing a small amount of light to undergo multiple refractions and reflections after entering the truncated pyramid structure, and then exit onto the side of the lens body 100 opposite to the light-emitting element 201. This application embodiment uses the first light guide structure 130 including the groove 131 as an example for illustration.

[0062] It is understandable that light will refract when propagating at the interface of media with different refractive indices. When the light emitted by the light-emitting element 201 is refracted through the first side wall 110 and enters the lens body 100, it will reach the second side wall 120. On a smooth wall without the first light guide structure, the light will either exit directly according to Snell's law or undergo total internal reflection. This solution, by setting the groove 131, can change the local curvature and normal direction of the lens 10, allowing a small amount of soft light to pass through the lens body 100 through refraction and reach the ceiling on the side away from the light-emitting element 201, effectively avoiding shadows and overexposure on the ceiling above the lamp 20 and improving the lighting effect. Compared with complex electronic dimming solutions or solutions that add independent light-shielding elements, this solution can effectively simplify the assembly process of the lamp 20 and reduce material costs.

[0063] Reference Figures 6 to 8 In some embodiments, the second light guide structure 140 includes a second wall segment 122, which is located on the outer periphery of the first light guide structure 130, as shown in the figure. Figure 8 In terms of orientation, the second wall segment 122 is located to the right of the first light guide structure 130. The second wall segment 122 connects to the first wall segment 121. The lens body 100 has a first axis 150 parallel to the first direction X. The angle between the second wall segment 122 and the first axis 150 is acute, allowing most light rays to be reflected by the second wall segment 122 to the outer periphery of the lens body 100 along the second direction Y. In other embodiments, the second light guide structure 140 includes multiple reflective surface segments arranged in a stepped manner. Each reflective surface segment is set at an acute angle to the first axis 150, but the tilt angles of each segment are different. For example, the reflective surface segments near the first light guide structure 130 have smaller tilt angles, used to reflect light near the central area at a large angle to the farther outer periphery, while the reflective surface segments farther from the first light guide structure 130 have larger tilt angles, used to reflect edge light at a small angle to the closer outer periphery. This stepped design can achieve a more refined light pattern distribution, adapting to specific lighting scenarios. In other embodiments, the second wall segment 122 can be smoothly connected to the first wall segment 121 to form a continuously changing curved surface, which can reduce the scattering loss of light at the abrupt change in structure and improve optical efficiency.

[0064] In this design, the second wall segment 122 is set at an acute angle to the first axis 150, meaning the second wall segment 122 is inclined relative to the first axis 150. When most light propagates from the first side wall 110 to the second wall segment 122, because the light travels from an optically denser medium (lens body 100) to an optically less dense medium (air), and the angle of incidence is designed to be greater than or equal to the critical angle for total internal reflection, total internal reflection can occur at the interface of the second wall segment 122, causing the reflected light to exit towards the outer periphery of the lens body 100. Therefore, this design can reflect a portion of the light that might otherwise be wasted towards the ceiling to the outer periphery, thus directing the light to the areas in the room that require the most illumination (the perimeter and lower space of the room), significantly improving lighting efficiency. Furthermore, the second wall segment 122 can work in conjunction with the first light guide structure 130 to ensure uniform and efficient light output from the luminaire 20.

[0065] Reference Figures 6 to 8 In some embodiments, the second light guide structure 140 includes a third wall segment 123, which is located on the inner periphery side of the first light guide structure 130, as shown in the figure. Figure 6 The third wall segment 123 is located to the left of the first light guide structure 130. The third wall segment 123 connects to the first wall segment 121. The lens body 100 has a first axis 150 parallel to the first direction X. The angle between the third wall segment 123 and the first axis 150 is acute, allowing most light rays to be reflected by the third wall segment 123 to the outer periphery of the lens body 100 along the second direction Y. In other embodiments, the third wall segment 123 includes multiple reflective surface segments arranged in a stepped manner. Each reflective surface segment is set at an acute angle to the first axis 150, but the tilt angles of each segment are different, thus forming a multi-level reflection structure. This design allows for a more refined light pattern distribution, adapting to specific lighting scenarios.

[0066] In this design, the third wall segment 123 is set at an acute angle to the first axis 150, meaning the third wall segment 123 is inclined relative to the first axis 150. When most light rays propagate from the first side wall 110 to the third wall segment 123, because the light rays travel from an optically denser medium (lens body 100) to an optically less dense medium (air), and the incident angle is designed to be greater than or equal to the critical angle for total internal reflection, total internal reflection can occur at the interface of the third wall segment 123, causing the reflected light rays to exit towards the outer periphery of the lens body 100. Therefore, this design can reflect a portion of the light rays that might otherwise be wasted towards the ceiling to the outer periphery, thus directing the light rays to the areas in the room that require the most illumination (the perimeter and lower space of the room), significantly improving lighting efficiency. Furthermore, the third wall segment 123 can work in conjunction with the first light guide structure 130 to ensure uniform and efficient light output from the luminaire 20. Furthermore, by adding a third wall section 123, this solution enables almost all light rays from the center to the edge of the light-emitting element 201 to be effectively guided when they reach the second side wall 120, thereby achieving all-round control of the emitted light rays.

[0067] Reference Figure 2 In some embodiments, the lamp 20 includes multiple light-emitting elements 201, and the specific number of light-emitting elements 201 can be determined according to the actual situation. The lens body 100 can be annular. Specifically, the lens body 100 can be circular, square, or other closed ring shapes. This embodiment of the application uses an annular lens body 100 as an example for description. The lens body 100 is provided with receiving grooves 160, which are arranged facing each light-emitting element 201, as shown in the figure. Figure 3 Orientation: The receiving slot 160 can be arranged downwards, and can accommodate each light-emitting element 201. It is understood that the light-emitting elements 201 can be arranged at intervals within the receiving slot 160. Specifically, multiple light-emitting elements 201 can be arranged at uniform intervals within the receiving slot 160, which can improve the uniformity of illumination. Multiple light-emitting elements 201 can also be arranged at non-uniform intervals within the receiving slot 160; for example, the light-emitting elements 201 can be densely arranged in directions requiring focused lighting (such as the head of the bed or the desk direction), and sparsely arranged in secondary directions (such as the passageway direction). This non-uniform distribution, combined with the annular lens 10, can achieve directional enhanced lighting effects to meet personalized lighting needs. In other embodiments, the lens body 100 can be configured as a non-closed C-shaped annular structure, i.e., the annular body has an opening. This solution can be used in scenarios where it is necessary to avoid other structures of the luminaire 20 (such as a central hanging rod or mounting base), or to form specific asymmetrical light patterns. The light-emitting elements 201 are also arranged at intervals within the C-shaped receiving groove 160, with no light-emitting elements 201 at the break point, thereby forming a specific light spot shape on the illumination surface. The specific shape of the lens 10 can be determined according to the actual situation. In this embodiment, the lens 10 is described as being in a circular shape.

[0068] This solution can simultaneously guide the light from all light-emitting elements 201 using a single lens 10. Compared to the solution of using multiple lenses 10 to fit each light-emitting element 201 individually, this further reduces the difficulty of assembly and disassembly, effectively improving the overall assembly and disassembly efficiency of the lamp 20. Furthermore, the receiving groove 160 in this solution can not only position each light-emitting element 201, but also improve the tolerance of the relative assembly of the lens 10 and the light-emitting element 201. The groove wall of the receiving groove 160 also serves to block light, preventing the light emitted by each light-emitting element 201 from interfering with each other without being processed by the lens 10, and preventing light from being wasted by being emitted to a non-target position.

[0069] Reference Figures 3 to 8 In some embodiments, the first light guide structure 130 includes a first wall segment 121, and the second light guide structure 140 includes a second wall segment 122 and a third wall segment 123. The second wall segment 122 and the third wall segment 123 are respectively connected to opposite ends of the first wall segment 121. It can be understood that the second wall segment 122 can be directly or indirectly connected to the first wall segment 121, and the third wall segment 123 can be directly or indirectly connected to the first wall segment 121, depending on the actual situation. The lens 10 has a first axis 150 parallel to the first direction X.

[0070] Reference Figure 8 In some embodiments, the angle between the second wall segment 122 and the first axis 150 is A, and the angle between the third wall segment 123 and the first axis 150 is B, wherein the second wall segment 122 and the third wall segment 123 satisfy: 0° < B < A < 90°. In other words, the tilt angle of the third wall segment 123 relative to the first axis 150 is smaller than the tilt angle of the second wall segment 122 relative to the first axis 150, that is, the reflecting surface on the inner peripheral side of the lens 10 is steeper than the reflecting surface on the outer peripheral side. Therefore, the light from the inner peripheral side of this solution can be reflected to the relatively closer outer peripheral side, and the light from the outer peripheral side can be reflected to the relatively farther outer peripheral side. The two can form a complementary superposition effect in space, creating a superimposed light field with uniform intensity in terms of illumination. Furthermore, the aforementioned tilt angle of the second wall segment 122 and the third wall segment 123 in this solution can ensure that all light is directed to the effective illumination area, preventing shadows from appearing on the ceiling above the luminaire 20, while also avoiding overexposure and improving illumination uniformity.

[0071] It should be noted that, in some embodiments, along the first direction X, referring to Figure 8In terms of orientation, specifically along the vertical direction, the height of the second wall segment 122 is H1, and the height of the third wall segment 123 is H2. The second wall segment 122 and the third wall segment 123 satisfy the condition: H1 > H2. In other words, the third wall segment 123 has a larger reflective area than the second wall segment 122. This design can reflect more light to a farther outer periphery of the luminaire 20, effectively avoiding overexposure, improving lighting efficiency, and also taking into account the mold forming process of the lens 10, facilitating demolding and reducing stress concentration.

[0072] Reference Figure 8 In some embodiments, the first sidewall 110 includes a fourth wall segment 111 and a fifth wall segment 112. The fourth wall segment 111 and the fifth wall segment 112 are connected to each other. The fifth wall segment 112 is located outside the fourth wall segment 111, as shown in the figure. Figure 8 In terms of orientation, the fifth wall segment 112 is located to the right of the fourth wall segment 111. The fourth wall segment 111 and the first light guide structure 130 are arranged opposite each other along the first direction X, as shown in the reference. Figure 8 The orientation is such that the fourth wall segment 111 and the first light guide structure 130 are arranged opposite each other in the vertical direction.

[0073] Reference Figure 8 Lens 10 has a first axis 150 parallel to the first direction X. The angle between the fourth wall segment 111 and the first axis 150 is C, and the angle between the fifth wall segment 112 and the first axis 150 is D. The fourth wall segment 111 and the fifth wall segment 112 satisfy: 45°≤C<D<90°. The above-described arrangement of the fourth wall segment 111 and the fifth wall segment 112 in this design ensures that the incident light has a sufficient deflection angle, allowing it to be directed at a larger angle towards the outer peripheral reflection area of ​​the second side wall 120, thus guaranteeing the subsequent light reflection effect.

[0074] Reference Figures 3 to 8 In some embodiments, the lens body 100 is provided with a first connecting structure 170, which is adapted to be threadedly connected to the base 202 of the lamp 20. Specifically, the first connecting structure 170 has a threaded hole, and the base 202 has a connecting hole 2022. Fasteners can pass through the connecting hole 2022 and be threaded into the threaded hole to connect the lens 10 to the bottom cover, thereby ensuring the stability of the connection between the lens 10 and the bottom cover and the ease of assembly and disassembly. In other embodiments, the first connecting structure 170 has a connecting post with a threaded hole. The connecting post can support the lens 10 at a target height and ensure the structural strength of the lens 10.

[0075] Reference Figure 3 and Figure 4In other embodiments, the lens body 100 has multiple interconnected sawtooth structures 180 on the side opposite to the first connecting structure 170. The specific structures of each sawtooth structure 180 can be the same or different. Specifically, the sawtooth structure 180 can be triangular, trapezoidal, or arc-shaped, etc. This embodiment uses a triangular sawtooth structure 180 as an example for explanation. The sawtooth structure 180 is used to reflect and refract light emitted by the light-emitting element 201. After the lens 10 and base 202 are assembled, it is difficult for external personnel to see the internal fasteners (screws or bolts, etc.) through the sawtooth structure 180 of the lens 10, which can improve the overall texture and aesthetics of the lamp 20. In other embodiments, because the sawtooth structure 180 can reflect and refract light, it can further suppress shadows or overexposure on the ceiling above the lamp 20, improving lighting efficiency and illumination effect.

[0076] Reference Figures 3 to 8 In some embodiments, the lens body 100 is provided with a second connecting structure 190, which includes a first hook 191 and a base 202 is provided with a first slot 2021. The structure of the first slot 2021 is adaptable to the arrangement of the first hook 191. The first hook 191 is adapted to pass through and engage with the first slot 2021. It is understood that the first slot 2021 can be single or multiple. This embodiment of the application uses the example of multiple first slots 2021 and multiple first hooks 191 for illustration. The number of first hooks 191 can be the same as the number of first slots 2021. In other embodiments, the base 202 includes a second hook, and the second connecting structure 190 includes a second slot. The structure of the second slot is adaptable to the arrangement of the second hook. The second hook can pass through and engage with the second slot. It is understood that the second slot can be single or multiple. This embodiment of the application uses the example of multiple second slots and multiple second hooks for illustration. The number of second hooks can be the same as the number of second slots. The lens 10 and base 202 of this solution are easy and quick to install and remove, and the connection between the two can be guaranteed to be stable.

[0077] Reference Figures 6 to 8 In some embodiments, the second sidewall 120 further includes a sixth wall segment 124, which can be connected to the outer side of the second wall segment 122 opposite to the first light guide structure 130. The sixth wall segment 124 can be inclined relative to the first axis 150. Specifically, the angle between the sixth wall segment 124 and the first axis 150 can be an acute angle. It should be noted that the sixth wall segment 124 can, together with the second wall segment 122, define a protrusion to effectively guide light. Since the main lighting element can be provided on the lower side of the lamp 20, the sixth wall segment 124 of this solution can guide some light to be emitted obliquely towards the ceiling, thereby increasing the brightness on one side of the ceiling and further improving the uniformity of illumination.

[0078] Reference Figure 7 In other embodiments, the second sidewall 120 further includes a seventh wall segment 125, which can be connected to the inner side of the third wall segment 123 facing away from the first light guide structure 130. The seventh wall segment 125 can be inclined relative to the first axis 150. Specifically, the angle formed between the seventh wall segment 125 and the first axis 150 can be an acute angle. The seventh wall segment 125 can reflect light that could be refracted to the central area of ​​the luminaire 20 along the first direction X toward the ceiling to the outer periphery of the luminaire 20 along the second direction Y. In the prior art, because the ceiling light is close to the ceiling, the central area of ​​the shadow formed by the ceiling light on the ceiling cannot be seen from below. The seventh wall section 125 of this solution can intercept the light emitted towards the center area of ​​the lamp 20 and direct the light to the outer periphery of the lamp 20. In this way, it will not affect the uniformity of the light on the ceiling above the lamp 20 (although the light intensity on the outer periphery of the lamp 20 is actually greater than the intensity in the center area of ​​the ceiling where the lamp 20 is located, the lighting of the entire ceiling is uniform when viewed from below by people in real scenes due to the blocking of the lamp 20 itself), and it can maximize the use of light for external lighting, thus greatly improving the lighting effect.

[0079] Reference Figure 7 In other embodiments, the first sidewall 110 further includes an eighth wall segment 113, which is connected to the outer side of the fifth wall segment 112 away from the fourth wall segment 111. The angle between the eighth wall segment 113 and the first axis 150 can be an acute angle. The eighth wall segment 113 can guide light to the second sidewall 120 for subsequent reflection processing.

[0080] Reference Figures 1 to 5 A second aspect of this invention provides a lamp 20, which includes a lens 10, a base 202, and a light-emitting element 201 as described in the above embodiments. The base 202 is used to mount the lens 10 and the light-emitting element 201. Specifically, the base 202 is connected to the lens 10. The light-emitting element 201 is connected to the base 202. In this solution, the first sidewall 110 of the lens 10 can refract the light emitted by the light-emitting element 201 to the second sidewall 120. The first light-guiding structure 130 of the second sidewall 120 can refract a small amount of light to the side of the lens body 100 away from the light-emitting element 201, that is, the lens 10 can guide a small amount of light to the side of the lens 10 facing the ceiling, avoiding shadows and overexposure on the ceiling above where the lamp 20 is located. Furthermore, the second light-guiding structure 140 of the second sidewall 120 can reflect most of the light to the outer periphery of the lens body 100, that is, the lens 10 can also guide most of the light to the outer periphery of the lens 10, effectively improving the lighting efficiency and lighting effect.

[0081] Reference Figures 1 to 5In some embodiments, the luminaire 20 includes a cover 203, which can enclose the lens 10, base 202, and light-emitting element 201, etc., to prevent dust and foreign objects from entering the interior of the luminaire 20. In other embodiments, the luminaire 20 includes a top mount 204, which can be connected to the ceiling to support the base 202 and lens 10, etc. In still other embodiments, the luminaire 20 includes a housing 205, which can be fitted with the base 202 and lens 10, etc.

[0082] It should be noted that if directional indications (such as up, down, left, right, front, back, etc.) are involved in the embodiments of the present invention, these directional indications are only used to explain the relative positional relationships and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly. When a direction reference is introduced in a specific embodiment, unless the direction is specifically limited to unidirectional, the direction can be unidirectional or bidirectional (two parallel and opposite directions). Whether it is unidirectional or bidirectional depends on what those skilled in the art can achieve. When the direction reference is bidirectional, it should be considered that two parallel and different embodiments have been introduced simultaneously.

[0083] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or," "and / or," or "and / or" throughout the text implies three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0084] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural transformations made using the contents of the specification and drawings of the present invention under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the scope of patent protection of the present invention.

Claims

1. A lens for a luminaire adapted for mounting on a ceiling, the luminaire comprising a light-emitting element, characterized in that, The lens includes: The lens body is disposed on the side of the light-emitting element facing the ceiling and arranged opposite to the ceiling along a first direction. Along the first direction, the lens body includes a first side wall facing the light-emitting element and a second side wall facing away from the light-emitting element. The second side wall is provided with a first light guide structure and a second light guide structure. The first sidewall is configured to refract the light emitted by the light-emitting element to the second sidewall. The first light guide structure refracts a portion of the light to the side of the lens body facing the ceiling along the first direction, and the second light guide structure reflects another portion of the light to the outer periphery of the lens body along the second direction, so that the light intensity on the outer periphery of the lens body along the second direction is greater than the light intensity on the side of the lens body facing the ceiling along the first direction. The second direction intersects the first direction. The first light guide structure includes a groove, and the second sidewall has a first wall segment. The first wall segment together defines the groove. The groove opening faces away from the light-emitting element. Part of the light can be refracted through the groove to the side of the lens body facing the ceiling along the first direction. The second light guide structure includes a second wall segment located on the outer periphery of the first light guide structure, the second wall segment being connected to the first wall segment, and the lens body having a first axis parallel to the first direction; wherein, the angle between the second wall segment and the first axis is an acute angle, and a portion of the light rays can be reflected through the second wall segment to the outer periphery of the lens body along the second direction; The second light guide structure further includes a third wall segment located on the inner periphery of the first light guide structure, the third wall segment being connected to the first wall segment, and the lens having a first axis parallel to the first direction; wherein, the angle between the third wall segment and the first axis is an acute angle, and a portion of the light rays can be reflected through the third wall segment to the outer periphery of the lens body along the second direction; The lens has a first axis parallel to the first direction, and the second sidewall further includes a seventh wall segment. The seventh wall segment is connected to the inner side of the third wall segment away from the first light guide structure. The angle between the seventh wall segment and the first axis is an acute angle. The seventh wall segment can reflect light that could be refracted to the lens body along the first direction toward the central area of ​​the ceiling to the outer periphery of the lens body along the second direction.

2. The lens as claimed in claim 1, characterized in that, The lamp includes a plurality of light-emitting elements, the lens body is annular, and the lens body is provided with a receiving groove for accommodating each of the light-emitting elements. The receiving groove is arranged toward each of the light-emitting elements, and the light-emitting elements are arranged at intervals within the receiving groove.

3. The lens as described in claim 1, characterized in that, The first light guide structure includes a first wall segment, the second light guide structure includes a second wall segment and a third wall segment, the second wall segment and the third wall segment are respectively connected to opposite ends of the first wall segment, and the lens has a first axis parallel to the first direction; and, The angle between the second wall segment and the first axis is A, and the angle between the third wall segment and the first axis is B, wherein the second wall segment and the third wall segment satisfy: 0° < B < A < 90°; and / or, Along the first direction, the height of the second wall segment is H1, and the height of the third wall segment is H2, wherein the second wall segment and the third wall segment satisfy: H1 > H2.

4. The lens as claimed in claim 1, characterized in that, The first sidewall includes a fourth wall segment and a fifth wall segment connected to each other, the fifth wall segment being located outside the fourth wall segment, and the fourth wall segment and the first light guide structure being arranged opposite to each other along the first direction; The lens has a first axis parallel to the first direction, the fourth wall segment forms an angle C with the first axis, the fifth wall segment forms an angle D with the first axis, and the fourth wall segment and the fifth wall segment satisfy: 45°≤C<D<90°.

5. The lens as claimed in claim 1, characterized in that, The lens body is provided with a first connecting structure, which is adapted to be threaded to the base of the lamp. On the side of the lens body opposite to the first connecting structure, there are multiple interconnected sawtooth structures, which are used to reflect and refract the light emitted by the light-emitting element.

6. The lens as described in claim 5, characterized in that, The lens body is provided with a second connecting structure, the second connecting structure includes a first hook, the base is provided with a first slot, and the first hook is adapted to pass through and engage with the first slot.

7. A lamp, characterized in that, include: The lens as described in any one of claims 1-6; as well as, Base, connected to the lens; The light-emitting element is connected to the base.

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