Integrated anti-dazzle lens

Abstract

The utility model discloses an integrated anti-dazzle lens which comprises a lens portion and further comprises a reflection anti-dazzle ring integrally connected with the lens portion, the reflection anti-dazzle ring is of an annular structure with taper, a plurality of tooth-shaped protruding strips are annularly arranged on the outer side face of the reflection anti-dazzle ring at intervals, and the tooth-shaped protruding strips extend in the axial direction of the reflection anti-dazzle ring. Each tooth-shaped convex strip is composed of cambered surfaces which are obliquely arranged on the two sides to form an included angle, and the cambered surfaces are outwards-convex cambered surfaces; the outer side face of the lens part is a scale and shell face, and the scale and shell face is formed by arranging a plurality of curved-surface single bodies in an array mode. According to the utility model, through reflection of internal light and shading of external light, a reflection effect which can be achieved by an electroplated surface can be generated, surface electroplating is not needed, and good light control and dodging effects can be achieved; an external anti-dazzle structure does not need to be additionally arranged, anti-dazzle is achieved through the reflection anti-dazzle ring of the lens, and the assembling problem existing when a shading structure is additionally arranged in the prior art is avoided.

Description

Technical Field

[0001] This utility model relates to the field of lighting equipment technology, and in particular to an integrated anti-glare lens. Background Technology

[0002] TIR lenses, or total internal reflection lenses, are commonly used in LED optical lenses. Because TIR lenses have multiple refractive and reflective surfaces, they can cause a lot of large-angle glare. In general, to eliminate large-angle glare, a light shield is usually installed on the outside of the lens.

[0003] For example, Chinese utility model patent document CN215336147U discloses an optical component and a lamp. The optical component in its technical solution includes a lens and a light shield disposed on the lens. The lens has a rotationally symmetrical structure and includes an incident surface, an exit surface, and a sidewall. The incident surface is formed by the lens being recessed upward at the bottom, and the exit surface is formed by the lens being recessed downward at the top. The sidewall is located between the incident surface and the exit surface. The light shield has an exit hole that is narrower at the top and wider at the bottom. The exit hole is opposite to and parallel to the exit surface. Below the exit hole is a semi-closed light shielding cavity.

[0004] For example, Chinese utility model patent document CN217109313U discloses a total internal reflection lens and spotlight. Its technical solution includes an incident light surface, an exit light surface and a total internal reflection surface. The total internal reflection surface connects the incident light surface and the exit light surface. A light-shielding part is provided on the exit light surface near the total internal reflection surface. The light-shielding part blocks stray light from being emitted from the total internal reflection lens.

[0005] The aforementioned patent documents all disclose technical solutions for configuring light-shielding structures on TIR lenses to reduce glare. However, due to the lack of unified specifications and standards, the light shields produced by different manufacturers vary in size and material selection, which leads to TIR lenses not achieving a uniform anti-glare effect when matched with lamps, and also results in differences in luminous efficacy. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide an integrated anti-glare lens that can effectively improve the anti-glare effect.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: an integrated anti-glare lens, including a lens part, the lens part having an inlet and an outlet, the bottom surface of the inlet being the inlet surface, the side wall surface of the inlet being the refractive surface, the bottom surface of the outlet being the outlet surface, and a reflective anti-glare ring integrally connected to the lens part, the reflective anti-glare ring being a tapered annular structure, the outer surface of the reflective anti-glare ring having multiple toothed protrusions arranged in annular intervals, the toothed protrusions extending along the axial direction of the reflective anti-glare ring; the toothed protrusions are composed of arc surfaces that are inclined on both sides to form an included angle, the arc surfaces being outwardly convex arc surfaces; the outer surface of the lens part is a scale-like surface, the scale-like surface being formed by multiple curved single units arranged in an array.

[0008] As an improvement to the above solution: the portion of the lens between the light inlet and the light outlet is a convex lens, the side of the convex lens inside the light inlet is the light inlet surface, the side of the convex lens inside the light outlet is the light outlet surface, the middle part of the light outlet surface and the light inlet surface are both convex surfaces; the convex surface in the middle of the light outlet surface is provided with a compound eye microstructure, and the light outlet surface also includes an annular concave surface surrounding the compound eye microstructure.

[0009] As an improvement to the above solution, the reflective anti-glare ring has a hollow structure.

[0010] As an improvement to the above scheme: the included angle of the tip of the toothed protrusion is an acute angle, and the angle range of the included angle of the tip is 75 to 85°.

[0011] As an improvement to the above solution: the toothed protrusion has a two-section structure, with the height of the section away from the lens being greater than the height of the section near the lens, so that the connection between the two sections of the toothed protrusion forms a stepped surface; the end face of the section near the lens is beveled to form a slope.

[0012] As an improvement to the above scheme: the slope of the end face of the toothed protrusion near the lens section is in the range of 30 to 60°.

[0013] As an improvement to the above solution, it also includes a flange edge located around the port of the anti-glare ring. The flange edge is a circular ring structure that bulges outward along the radial direction of the anti-glare ring, and the flange edge and the anti-glare ring are an integral structure. The bottom of the flange edge is beveled to form an angular structure.

[0014] As an improvement to the above scheme: the light inlet is a conical structure, and the diameter of the light inlet gradually increases from the end closer to the light-inlet surface to the end farther away from the light-inlet surface.

[0015] As an improvement to the above scheme: the toothed protrusions and the curved unit are both arranged in an arc to form a spiral array, and the extension arc of the curved unit is greater than the extension arc of the toothed protrusions.

[0016] As an improvement to the above solution, the height ratio of the anti-glare ring to the lens is 1:1.

[0017] The beneficial effects of this invention are as follows: This invention replaces the light-shielding structure in the prior art by directly installing a reflective anti-glare ring on the lens. The reflective anti-glare ring can reflect internal light through the toothed protrusions on its outer surface. The toothed protrusions allow internal light to undergo total internal reflection between the two arc surfaces of the toothed protrusions, and can also refract external light, increasing the exit angle of external light after it enters the lens through the toothed protrusions. The exit light cannot directly hit the user's eyes, creating a false light-shielding effect. Furthermore, the scale-like surface on the outer side of the lens helps to control and homogenize light, reducing the stray light exit angle or eliminating stray light, thus achieving deep anti-glare. This invention achieves the reflective effect achievable by an electroplated surface through the reflection of internal light and the blocking of external light, but without the need for surface electroplating, thus providing excellent light control and homogenization. This invention eliminates the need for an external anti-glare structure, using the reflective anti-glare ring within the lens itself for anti-glare, avoiding the assembly problems associated with adding a light-shielding structure in the prior art. Attached Figure Description

[0018] Figure 1 This is an isometric view of the top perspective of this utility model;

[0019] Figure 2 This is an isometric view of the bottom of this utility model;

[0020] Figure 3 This is a cross-sectional view of the present invention;

[0021] Figure 4 This is an enlarged schematic diagram of the toothed protrusions in this utility model;

[0022] Figure 5 This is an enlarged schematic diagram of the scales in this utility model;

[0023] Figure 6 This is a schematic diagram showing the light rays exiting from the convex lens.

[0024] Figure 7 This is a schematic diagram showing the emitted light rays passing through the refracting surface of the entrance port, being reflected by the scale-like surface, and then exiting.

[0025] Figure 8 This is a schematic diagram showing the emitted light rays passing through the refracting surface of the entrance port and then exiting after being reflected by the anti-glare ring.

[0026] Figure 9 A schematic diagram illustrating the effect of the toothed protrusions of the anti-glare ring on internal and external light.

[0027] The markings in the diagram are: 100-lens section, 110-light inlet, 120-light outlet, 130-light inlet surface, 140-refracting surface, 150-light outlet surface, 200-reflective anti-glare ring, 210-toothed ridge, 220-flange edge. Detailed Implementation

[0028] To facilitate understanding of this utility model, the following description, in conjunction with the accompanying drawings, will provide further details.

[0029] In the description of this utility model, it should be noted that the terms "front", "rear", "left", "right", "up", "down", "inner", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of description and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] like Figure 1 and Figure 2 As shown, the integrated anti-glare lens disclosed in this utility model consists of a lens portion 100 and a reflective anti-glare ring 200. The lens portion 100 is connected to the bottom of the reflective anti-glare ring 200, which has a ring structure and a tapered shape to form a flared, trumpet-like structure. To avoid assembly problems associated with existing light-shielding structures, this utility model integrates the reflective anti-glare ring 200 and the lens portion 100 into a single unit, using transparent optical materials such as PMMA, PC, and glass. The lens portion 100 and the reflective anti-glare ring 200 can be directly molded using a single mold through injection molding, eliminating the need for assembly between them and reducing production complexity and shortening the production process. The height of the anti-glare ring 200 can be adjusted according to the actual anti-glare requirements, but the height of the anti-glare ring 200 is preferably set to half of the entire integrated anti-glare lens, that is, the height ratio of the anti-glare ring 200 to the lens part 100 is preferably 1:1, which can play a deep anti-glare role.

[0031] Specifically, such as Figures 1 to 3As shown, the main structure of the lens section 100 is a convex lens in the center, with both sides of the convex lens being convex surfaces. Taking the axis of the lens section 100 as a reference, the light inlet 110 of the lens section 100 is located below the convex lens, and the light outlet 120 of the lens section 100 is located above the convex lens. The sidewall of the light inlet 110 is a refractive surface 140, the bottom surface of the light inlet 110 is a light inlet surface 130, and the bottom surface of the light outlet 120 is a light outlet surface 150; that is, the side of the convex lens located within the light inlet 110 is the light inlet surface 130, and the side of the convex lens located within the light outlet 120 is the light outlet surface 150. The light inlet 110 is formed by the refractive surface 140 forming a ring, and the light outlet 120 is formed by the reflective anti-glare ring 200 forming a ring. The light inlet 110 has a conical structure, and its diameter gradually increases from the end closer to the light-incident surface 130 to the end farther away from the light-incident surface 130, making the refractive surface 140 of the sidewall of the light inlet 110 inclined. The middle part of the light-exit surface 120 and the light-incident surface 130 are both convex. A compound eye microstructure is provided on the convex surface in the middle of the light-exit surface 150, and a ring of concave surfaces surrounds the compound eye microstructure in the middle of the light-exit surface 150; Figure 6 As shown, light enters the convex lens through the light inlet 110 of the lens section 100. The convex lens can refract this part of the incident light, causing the incident light to converge. Then, the light is emitted through the compound eye microstructure on the light outlet surface 130, so as to achieve good light control and light uniformity.

[0032] Furthermore, in order to reduce production costs, the present invention sets the anti-glare ring 200 as a hollow structure. The hollow part of the anti-glare ring 200 can save the amount of material used, and in general, it can save at least 30% of the production materials.

[0033] In order to improve the anti-glare effect, this utility model provides multiple toothed protrusions 210 on the outer side of the reflective anti-glare ring 200, and multiple scale structures to form a scale surface on the outer side of the lens part 100.

[0034] like Figure 1 , Figure 2 and Figure 4 As shown, the toothed ridge 210 adopts an unconventional toothed structure. Both sides of the toothed ridge 210 in this invention are curved surfaces, and these curved surfaces are convex. The two curved surfaces are inclined and intersect, causing the toothed ridge 210 to form a pointed tip with a certain angle. On the outer surface of the anti-glare ring 200, multiple toothed ridges 210 are arranged in a ring at intervals and extend along the axial direction of the anti-glare ring 200. For example... Figure 9As shown, the included angle of the tip of the toothed protrusion 210 is α. Considering the reflection effect on light, this included angle α is set to an acute angle, and the range of this included angle α is preferably 75-85°. By providing the toothed protrusion 210 on the outer side of the reflective anti-glare ring 200, when the internal light S1 is scattered from the inside of the integrated anti-glare lens to the toothed protrusion 210, the internal light S1 is reflected by one side of the toothed protrusion 210, reflected to the other side of the toothed protrusion 210, and reflected again back to the inside of the integrated anti-glare lens, and finally emitted through the light outlet 120, thereby improving the light emission effect of this invention. When the included angle α of the tip of the toothed protrusion 210 is limited to the range of 75-85°, the internal light S1 will undergo total internal reflection between the two sides of the toothed protrusion 210, thereby further avoiding light spillage and achieving a better light emission effect. When external light S2 enters the integrated anti-glare lens from the outside, it is refracted by the two sides of the toothed protrusion 210. After passing through the toothed protrusion 210, the exit angle of the external light S2 increases, and the outgoing light cannot directly reach the user's eyes, thus creating a false light-blocking effect. Therefore, this invention, by setting the toothed protrusion 210 on the outer side of the reflective anti-glare ring 200, can both reflect the internal light S1 and block the external light S2, achieving the light-blocking effect that the electroplated surface can achieve in the prior art. However, this invention does not require surface electroplating, which is more conducive to reducing production costs and simplifying the production process.

[0035] Furthermore, such as Figures 1 to 4As shown, in this invention, the toothed protrusion 210 is configured as a two-segment structure, with the height of the segment of the toothed protrusion 210 away from the lens portion 100 being greater than the height of the segment of the toothed protrusion 210 closer to the lens portion 100. This allows a stepped surface to be formed at the connection between the two segments of the toothed protrusion 210. In other words, the two segments of the toothed protrusion 210 are not directly connected, but rather connected through a transitional plane, forming a stepped structure at the connection point. This structural improvement of the toothed protrusion 210 results in two discontinuous segments on its surface, completely independent of each other. This allows for greater freedom of movement, more precise angle control, and easier implementation of precise light distribution design, leading to more flexible light control. Furthermore, for light sources with a large luminous surface area, such as those formed by combining multiple SMD light sources, if the end of the toothed protrusion 210 is a flat angle, the edge light emitted from the luminous surface will cause a large angle of emission at the flat angle end of the toothed protrusion 210, resulting in glare. To solve the above problem, this invention also bevels the end face of the toothed protrusion 210 near the lens portion 100, thereby forming a slope at the end of the toothed protrusion 210 near the lens portion 100. The slope of this slope ranges from 30 to 60°. By forming a slope at the end of the toothed protrusion 210, the emission angle of the edge light can be effectively reduced, thereby achieving the effect of reducing glare.

[0036] like Figure 1 , Figure 2 and Figure 5 As shown, the outer surface of the lens portion 100 in this invention is configured as a scale-like surface formed by an array of multiple scale-like structures. Each scale-like structure is a curved single-unit surface with an outwardly convex arc surface. The specific shape of the curved single-unit surface is not limited. The edges of adjacent curved single-unit surfaces are closely abutted to form a scale-like surface on the outer surface of the lens portion 100. For example... Figure 7 As shown, light enters the convex lens through the light inlet 110 of the lens section 100. A portion of the light travels from the inside to the outer surface of the lens section 100. Because the scale-like structure covering the outer surface of the lens section 100 is a curved monolith with an outwardly convex arc surface, it can distribute the light intensity point on the inner surface of the lens section 100. The curved surface of the monolith achieves precise light control. This portion of the light, after being subjected to total internal reflection by each curved monolith, converges towards the light outlet 120 and finally exits through the light outlet 120. This invention, by employing the scale-like surface formed by curved monoliths on the outer surface of the lens section 100 and the compound eye microstructure located in the center of the light outlet surface 150 for light control and uniformity, can reduce or eliminate the emission angle of stray light, achieving a better depth anti-glare effect.

[0037] Furthermore, such as Figure 1 and Figure 2As shown, the toothed protrusions 210 on the outer side of the reflective anti-glare ring 200 and the curved single units on the outer side of the lens part 100 are preferably arranged in an arc, forming a spiral array by rotating at a certain angle, and the extension arc of the curved single unit is greater than the extension arc of the toothed protrusions 210, which can achieve better illumination uniformity.

[0038] like Figures 1 to 3 As shown, this utility model also includes a flange edge 220 around the port of the anti-glare ring 200. The flange edge 220 is a circular ring structure that bulges outward radially along the anti-glare ring 200. The flange edge 220 and the anti-glare ring 200 are made of the same material and are integrated into one piece. The bottom of the flange edge 220 is beveled by providing two bevels at the bottom of the flange edge 220 to form an angular structure. Figure 8 As described above, when light enters the convex lens through the light inlet 110 of the lens section 100, some stray light will enter the interior of the reflective anti-glare ring 200. After being subjected to multiple total internal reflections by the reflective anti-glare ring 200, this part of the light is emitted through the light outlet 120 at the end of the reflective anti-glare ring 200, forming a large-angle glare. This utility model provides a flange edge 220 at the port of the reflective anti-glare ring 200. First, the light undergoes multiple total internal reflections by the flange edge 220, and then is emitted in the opposite direction through the angular structure at the bottom of the flange edge 220, thus preventing the generation of large-angle glare at the light outlet 120, and eliminating the large-angle glare.

Claims

1. An integrated anti-glare lens, comprising a lens portion (100), the lens portion (100) having a light inlet (110) and a light outlet (120), the bottom surface of the light inlet (110) being a light-inlet surface (130), the side wall surface of the light inlet (110) being a refractive surface (140), and the bottom surface of the light outlet (120) being a light-outlet surface (150), characterized in that: It also includes a reflective anti-glare ring (200) integrally connected to the lens part (100). The reflective anti-glare ring (200) is a tapered ring structure. The outer surface of the reflective anti-glare ring (200) is arranged with multiple toothed protrusions (210) in a ring. The toothed protrusions (210) extend along the axial direction of the reflective anti-glare ring (200). The toothed protrusions (210) are composed of arc surfaces that are inclined on both sides to form an angle. The arc surfaces are convex arc surfaces. The outer surface of the lens part (100) is a scale surface. The scale surface is formed by multiple curved single units arranged in an array.

2. The integrated anti-glare lens as described in claim 1, characterized in that: The portion of the lens section (100) between the light inlet (110) and the light outlet (120) is a convex lens. The side of the convex lens inside the light inlet (110) is the light inlet surface (130), and the side of the convex lens inside the light outlet (120) is the light outlet surface (150). The middle part of the light outlet surface (150) and the light inlet surface (130) are both convex. The convex surface in the middle of the light outlet surface (150) is provided with a compound eye microstructure, and the light outlet surface (150) also includes an annular concave surface surrounding the compound eye microstructure.

3. The integrated anti-glare lens as described in claim 2, characterized in that: The reflective anti-glare ring (200) has a hollow structure.

4. The integrated anti-glare lens as described in claim 1, characterized in that: The included angle of the tip of the toothed protrusion (210) is an acute angle, and the angle range of the included angle of the tip is 75 to 85°.

5. The integrated anti-glare lens as described in claim 1, characterized in that: The toothed protrusion (210) has a two-section structure. The height of the section away from the lens part (100) is set to be greater than the height of the section near the lens part (100), so that the connection between the two sections of the toothed protrusion (210) forms a stepped surface; the end face of the section near the lens part (100) is formed by beveling to form a slope.

6. The integrated anti-glare lens as described in claim 5, characterized in that: The slope of the end face of the toothed protrusion (210) near the lens portion (100) ranges from 30° to 60°.

7. The integrated anti-glare lens as described in claim 1, characterized in that: It also includes a flange edge (220) located on the periphery of the port of the anti-glare ring (200). The flange edge (220) is a circular ring structure that bulges outward along the radial direction of the anti-glare ring (200). The flange edge (220) and the anti-glare ring (200) are an integral structure. The bottom of the flange edge (220) is formed into an angular structure by beveling.

8. The integrated anti-glare lens as described in claim 1, characterized in that: The light inlet (110) has a conical structure, and the diameter of the light inlet (110) gradually increases from the end closer to the light-inlet surface (130) to the end farther away from the light-inlet surface (130).

9. The integrated anti-glare lens as described in claim 1, characterized in that: The toothed protrusions (210) and the curved unit are both arranged in an arc to form a spiral array, and the arc of the curved unit is greater than the arc of the toothed protrusions (210).

10. The integrated anti-glare lens as described in claim 1, characterized in that: The height ratio of the anti-glare ring (200) to the lens portion (100) is 1:1.

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