Anti-dazzle uniform light spot lens and lamp

Abstract

The utility model belongs to the technical field of optical lenses, and particularly relates to an anti-dazzle uniform light spot lens and a lamp. The center of the bottom of the lens is provided with a light-in hole, the inner wall surface of the light-in hole is a light-in surface, the top of the lens forms a light-out surface, the side surface connecting the bottom and the top of the lens forms a reflecting surface, and the reflecting surface is used for reflecting light passing through the reflecting surface to the light-out surface; the light-emitting face is an arc-shaped face with the center recessed towards the light-in face, a plurality of protrusions irregular in size and shape are arranged on the arc-shaped face, and the protrusions are curved protrusions protruding outwards. The utility model is used for solving the problem that a central dark area exists after light spots are uniform. After light rays are refracted by the protrusions, a large refraction angle can be formed, the light rays are dispersed more evenly, the light rays are distributed more evenly, and then the situation that a light spot dark area appears in a central area due to the fact that most of the light rays are gathered to a certain area in a unified mode through a traditional regular microstructure is avoided; and the glare problem caused by peripheral light of the lens is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of optical lens technology, specifically relating to an anti-glare uniform light spot lens and a lamp. Background Technology

[0002] In the field of optical lighting technology, the light emitted by a light source usually has a non-uniform intensity distribution. This non-uniformity makes it difficult to meet the high requirements of uniform light intensity in some application scenarios. Therefore, in actual use, optical lenses are used to process the light to be more uniform through refraction and reflection.

[0003] Currently, with the development of micro-nano fabrication technology, microstructures are introduced on the lens surface, and the uniformity of the light spot is significantly improved by precisely controlling the refraction and diffraction of light.

[0004] However, conventionally arranged microstructures on the light-emitting surface of a lens can, to some extent, achieve a uniform light spot effect, such as... Figure 3 As shown, conventional microstructures can achieve a light spot effect that also results in a dark central area, and the uniformity of the light spot does not meet high usage requirements. Utility Model Content

[0005] To address the shortcomings of existing technologies, an anti-glare uniform light spot lens and lamp are provided to solve the problem of a central dark area after the light spot becomes uniform.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: an anti-glare uniform light spot lens, wherein a light entrance hole is provided at the center of the bottom of the lens, the inner wall surface of the light entrance hole is the light entrance surface, the top of the lens forms a light exit surface, and the side connecting the bottom and top of the lens forms a reflective surface, the reflective surface is used to reflect the light passing through it to the light exit surface.

[0007] The light-emitting surface is an arc-shaped surface that is concave towards the light-incident surface. The arc-shaped surface is provided with a number of irregularly sized and shaped protrusions, which are outwardly convex curved protrusions.

[0008] Compared with existing technologies, the above technical solutions have the following beneficial effects:

[0009] By setting irregular protrusions on the light-emitting surface, and having these irregular protrusions densely arranged on the light-emitting surface, the light can form a larger refraction angle after being refracted by the protrusions, making the light more dispersed and more evenly distributed. This avoids the situation where traditional regular microstructures concentrate most of the light into a certain area, resulting in a dark spot in the central area. At the same time, the center of the light-emitting surface is concave, avoiding glare problems caused by light from the outer periphery of the lens.

[0010] Based on the above technical solution, the embodiments of this application can be further improved as follows:

[0011] In one embodiment, the angle between the tangent of the outer edge of the light-emitting surface and the horizontal plane is 18-22°.

[0012] In one embodiment, the radius of curvature of the protrusion is 1.3-1.8 mm.

[0013] In one embodiment, the cross-section of the protrusion is a polygon with at least one corner beveled.

[0014] In one embodiment, the protrusions on the light-emitting surface are arranged in a spiral array around the central axis of the lens.

[0015] In one embodiment, the center-to-center distance between adjacent protrusions is 0.7-1.3 mm.

[0016] In one embodiment, the radial spacing between the protrusions of adjacent spiral coils is 0.3-0.7 mm.

[0017] This embodiment also discloses a lamp that includes the above-mentioned anti-glare uniform light spot lens.

[0018] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0019] 1. By combining the concave light-emitting surface, the glare caused by the outward expansion of light rays from the lens periphery is reduced;

[0020] 2. By using irregular protrusions to disperse and refract light, the light spot becomes more uniform, with no dark areas.

[0021] 3. The spiral arrangement creates a dot pattern on the protrusions, and the spiral arrangement can control the direction of light, thereby optimizing the light spot and making it more uniform. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a top view of the structure of this utility model.

[0024] Figure 2 for Figure 1 A schematic diagram of the longitudinal cross-section structure.

[0025] Figure 3 This is a schematic diagram of the light rays from a lens with a conventional microstructure in the prior art.

[0026] Figure label:

[0027] 1. Lens; 2. Entrance aperture; 3. Entrance surface; 4. Exit surface; 5. Reflecting surface; 6. Protrusion. Detailed Implementation

[0028] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0029] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0030] In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", 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 describing this utility model and simplifying the description, and do not indicate or imply that the device or element 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.

[0031] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] Example 1

[0033] like Figure 1-2 As shown, the present invention provides an anti-glare uniform light spot lens 1. The lens 1 is a centrally rotationally symmetrical lens 1. A light entrance hole 2 is provided at the center of the bottom of the lens 1. The inner wall surface of the light entrance hole 2 is the light entrance surface 3. A light exit surface 4 is formed at the top of the lens 1. A reflective surface 5 is formed on the side connecting the bottom and top of the lens 1. The reflective surface 5 is used to reflect the light passing through it to the light exit surface 4. The reflective surface 5 is a convex curved surface, which can focus the light from the light entrance surface 3 to the light exit surface 4.

[0034] The light-emitting surface 4 is an arc-shaped surface with its center recessed towards the light-incident surface 3. By concave the center of the light-incident surface 3, the peripheral light can be focused and the glare reduced. The arc-shaped surface is provided with several irregularly sized and shaped protrusions 6. The protrusions 6 are outwardly convex curved protrusions 6. The protrusions 6 are densely arranged on the arc-shaped surface without gaps between them.

[0035] By setting irregular protrusions 6 on the light-emitting surface 4, and having these protrusions densely arranged, light rays refracted through the protrusions 6 can form a larger angle of refraction, resulting in more dispersed and more uniform light distribution. This avoids the situation where traditional regular microstructures concentrate most of the light rays into a certain area, causing a dark spot in the central region. Figure 2 and Figure 3 contrast, Figure 3 A noticeable dark area will appear in the central region, while Figure 2 Because of the reasonable control of light, the illumination is uniform. At the same time, the center of the light-emitting surface 4 is concave, which avoids the glare problem caused by the light from the outer edge of the lens 1. Specifically, the angle between the tangent of the outer edge of the light-emitting surface 4 and the horizontal plane is 18-22°. By making the outer edge of the light-emitting surface 4 relatively large, the light from the outer edge of the lens 1 passing through the light-emitting surface 4 is reduced, thereby avoiding glare.

[0036] Specifically, the radius of curvature of the protrusion 6 is 1.3-1.8mm. By adjusting the radius of curvature of the protrusion 6, the uniformity of the light spot can achieve a better target effect.

[0037] The cross-section of the protrusion 6 is a polygon with at least one corner beveled. In this embodiment, the cross-section of the protrusion 6 is quadrilateral. The quadrilateral protrusion 6 facilitates the close arrangement of the protrusions 6 in a good array. Furthermore, since the rectangular cross-section is densely arranged with the adjacent protrusions 6, the cross-section of the protrusion 6 is generally quadrilateral. The four corners of the quadrilateral can be beveled, thereby forming an irregularly shaped protrusion 6.

[0038] By controlling the arrangement of the protrusions 6, the direction of light can be controlled, providing a uniform light spot effect. Specifically, the protrusions 6 on the light-emitting surface 4 are arranged in a spiral array around the central axis of the lens 1. Each protrusion 6 is an irregular protrusion. By arranging the protrusions 6 in a spiral array, the direction of light can be controlled, forming irregular diffusion with minimal light spot overlap. This avoids the limiting effect of light spot superposition after homogenization caused by microstructures arranged in regular arrays in the past. Specifically, a protrusion 6 is provided at the center of the light-emitting surface 4. In this embodiment, the protrusion 6 is triangular. Based on the central protrusion 6, protrusions 6 are closely arranged outward along multiple spiral paths to form a spiral array arrangement.

[0039] Specifically, the center distance between adjacent protrusions 6 is 0.7-1.3mm, thereby controlling the basic size of each protrusion 6 to achieve a uniform light spot effect;

[0040] Based on this, the radial spacing between the protrusions 6 of adjacent spiral rings is 0.3-0.7mm, and the size of the protrusions 6 of each ring is controlled to maintain a basically consistent size, so that the uniformity of the light spot meets the requirements.

[0041] Example 2

[0042] This embodiment also discloses a lamp, which includes the anti-glare uniform light spot lens 1 in the above embodiment 1. Multiple lenses 1 can be provided. A light source is provided in the light entrance hole 2 of the lens 1. According to actual usage requirements, it can be used in spotlights, downlights and wall washer lamps. Its effect is the same as described in embodiment 1, and will not be repeated here.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A lens with a uniform anti-glare spot, characterized in that, The lens has a light-entry hole at the center of its bottom, the inner wall of the light-entry hole is the light-entry surface, the top of the lens forms the light-exit surface, and the side connecting the bottom and top of the lens forms a reflective surface, which is used to reflect light rays passing through it to the light-exit surface. The light-emitting surface is an arc-shaped surface that is concave towards the light-incident surface. The arc-shaped surface is provided with a number of irregularly sized and shaped protrusions, which are outwardly convex curved protrusions.

2. The anti-glare uniform spot lens according to claim 1, characterized in that, The angle between the tangent of the outer edge of the light-emitting surface and the horizontal plane is 18-22°.

3. The anti-glare uniform spot lens according to claim 1, characterized in that, The radius of curvature of the protrusion is 1.3-1.8 mm.

4. The anti-glare uniform spot lens according to claim 1, characterized in that, The cross-section of the protrusion is a polygon with at least one corner beveled.

5. The anti-glare uniform spot lens according to claim 1, characterized in that, The protrusions on the light-emitting surface are arranged in a spiral array around the central axis of the lens.

6. The anti-glare uniform spot lens according to claim 5, characterized in that, The center-to-center distance between adjacent protrusions is 0.7-1.3 mm.

7. The anti-glare uniform spot lens according to claim 5, characterized in that, The radial spacing between the protrusions of adjacent spiral rings is 0.3-0.7 mm.

8. A lamp, characterized in that, Including the anti-glare uniform spot lens as described in any one of claims 1-7.

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