T8 lamp tube lens

Abstract

The utility model relates to the technical field of optical components, in particular to a T8 lamp tube lens, which is characterized in that the T8 lamp tube lens is arranged on the outer side of a light source and comprises a central portion corresponding to the light source and two continuous protruding portions, and the two continuous protruding portions are symmetrically arranged relative to the central portion. And the outer surfaces of the central part and the two continuous convex parts form an arc-shaped surface. The T8 lamp tube lens has the advantages of being high in light utilization rate and even in light spot.

Description

Technical Field

[0001] The utility model relates to the technical field of optical components, and more specifically, to a T8 lamp tube lens. Background Art

[0002] T8 lamps are usually composed of parts such as the shell, light source and base. Due to their advantages such as high efficiency and energy saving, long life and soft light, they are widely used in various indoor and outdoor lighting environments such as homes, offices, commercial places, industrial plants, etc., and are an important part of the modern lighting field.

[0003] Traditional T8 tubes are prone to problems such as uneven light spots and low light utilization. Lenses, as optical components that optimize light distribution and lighting quality by redirecting light, are often used to improve and enhance the lighting effects of T8 tubes. However, the primary function of existing lenses in T8 tubes is to focus light for uniform illumination. This process results in a significant amount of light emitted from the side of the light source being wasted, resulting in low light utilization. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a T8 lamp tube lens, which has the advantages of high light utilization rate and uniform light spot.

[0005] The above technical purpose of the present utility model is achieved through the following technical solution: a T8 lamp tube lens is arranged on the outside of the light source, including a central part corresponding to the light source and two continuous raised parts, the two continuous raised parts are symmetrically arranged about the central part, and the outer surfaces of the central part and the two continuous raised parts form an arc surface.

[0006] In one embodiment, the continuous raised portion includes an arc-shaped member fixed on one side of the central portion, a first protrusion, a second protrusion and a third protrusion arranged in sequence on the inner side of the arc-shaped member, and the first protrusion is arranged at one end of the arc-shaped member close to the central portion, and the arc-shaped member, the first protrusion, the second protrusion and the third protrusion all extend straight along their length direction.

[0007] In one embodiment, a first curved surface, a second curved surface and a third curved surface are formed on the first protrusion, the second protrusion and the third protrusion respectively, for controlling the light emitted from the side of the light source.

[0008] In one embodiment, the curvature of the first curved surface is 0.40, the curvature of the second curved surface is 0.51, and the curvature of the third curved surface is 0.33.

[0009] In one embodiment, the curvature of the central portion is 0.05.

[0010] In one embodiment, the vertical distance between the center portion and the light source is 2.6 mm.

[0011] In one embodiment, the thickness of the central portion is 1-1.5 mm.

[0012] In one embodiment, two mounting positions are further included, which are respectively arranged at the outer edges of the two arc-shaped members and on one side of the third protrusion, and the two mounting positions are symmetrical about the central portion.

[0013] In one embodiment, the lens is made of mixed PC material.

[0014] The above-mentioned T8 lamp lens has the following beneficial effects:

[0015] First, by setting a central part and two continuous raised parts, the light emitted by the light source is precisely graded and controlled, so that the light spots generated by the side and center of the light source overlap with each other, forming a uniform light spot while improving light utilization efficiency;

[0016] Secondly, by setting the vertical distance between the central curved surface and the external light source to 2.6mm, the light emitted from the side of the light source is maximized, further improving light utilization efficiency;

[0017] Third, by setting the thickness of the central curved surface to 1-1.5mm, the optical path is minimized to further improve light utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of this embodiment Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the structure of this embodiment Figure 2 ;

[0020] Figure 3 This is a schematic diagram of the structure of this embodiment Figure 3 ;

[0021] Figure 4 is a light distribution curve diagram of this embodiment;

[0022] Figure 5 This is the spot diagram of the directly illuminated surface of this embodiment.

[0023] In the figure: 1. Center portion; 2. Continuous raised portion; 21. First raised portion; 211. First curved surface; 22. Second raised portion; 221. Second curved surface; 23. Third raised portion; 231. Third curved surface; 24. Arc-shaped member; 3. Mounting position. DETAILED DESCRIPTION

[0024] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, unless otherwise specifically defined.

[0027] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0028] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0029] A T8 lamp lens, such as Figure 1 、 Figure 2 and Figure 3As shown, it is disposed on the outside of a light source (not shown in the figure) and includes a central portion 1 corresponding to the light source and two continuous raised portions 2. The two continuous raised portions 2 are symmetrically arranged about the central portion 1. The outer surfaces of the central portion 1 and the two continuous raised portions 2 form a curved surface (not shown in the figure). The central portion 1 is located directly above the strip-shaped light source and is used to receive light emitted from the center of the light source. The two continuous raised portions 2 are used to receive light emitted from the sides of the light source. The outer surfaces of the three form the curved surface of the lens. In this embodiment, the central portion 1 is a strip-shaped member with a curved outer surface. The lens can directly serve as the outer shell of a T8 lamp tube, or a frosted outer shell can be added to the outer surface of the lens according to actual needs. This is not limited here.

[0030] By providing the central portion 1 and the two continuous raised portions 2, the light emitted by the light source is precisely graded and controlled, so that the light spots generated on the side and the center of the light source overlap with each other, forming a uniform light spot while improving light utilization.

[0031] Specifically, such as Figure 2 and Figure 3 As shown, the continuous raised portion 2 includes an arc-shaped member 24 fixed to one side of the central portion 1, a first protrusion 21, a second protrusion 22, and a third protrusion 23 arranged in sequence on the inner side of the arc-shaped member 24, and the first protrusion 21 is arranged at the end of the arc-shaped member 24 close to the central portion 1. The arc-shaped member 24, the first protrusion 21, the second protrusion 22, and the third protrusion 23 all extend straight along their lengths, and the first protrusion 21, the second protrusion 22, and the third protrusion 23 are similar in size. The number and size of the protrusions are not limited here and can be set according to the size of the light source and the actual light control requirements, as long as the light spot is uniform and the light utilization efficiency is improved. In this embodiment, the first protrusion 21, the second protrusion 22, and the third protrusion 23 are all composed of two surfaces, a curved surface and a flat surface.

[0032] Furthermore, if Figure 3 As shown, the first protrusion 21, the second protrusion 22 and the third protrusion 23 are respectively formed with a first curved surface 211, a second curved surface 221 and a third curved surface 231 that are convex. The first curved surface 211 is arranged on the first protrusion 21, the second curved surface 221 is arranged on the second protrusion 22, and the third curved surface 231 is arranged on the third protrusion 23. All three are used to control the light emitted from the side of the light source, and have similar sizes but different curvatures, so as to grade and control the light emitted from the light source at different angles.

[0033] Furthermore, if Figure 3 As shown, the curvature of first curved surface 211 is 0.40, the curvature of second curved surface 221 is 0.51, and the curvature of third curved surface 231 is 0.33. By controlling the curvature, the light emitted from the side of the light source is precisely controlled. During the light control process, the light refracted by the first curved surface 211, the second curved surface 221, and the third curved surface 231 produces a white light spot on the side and a yellow light spot in the center.

[0034] Specifically, such as Figure 2 and Figure 3 As shown, the curvature of the center portion 1 is 0.05, which precisely controls the light emitted from the center of the light source. During the light control process, the side of the light refracted by the center portion 1 produces a yellow light spot, and the center portion produces a white light spot. By controlling the curvature of the first curved surface 211, the second curved surface 221, the third curved surface 231 and the center portion 1, the four are coordinated to overlap the yellow light spot produced by the first curved surface 211, the second curved surface 221 and the third curved surface 231 with the white light spot produced by the center portion 1, and the white light spot produced by the first curved surface 211, the second curved surface 221 and the third curved surface 231 with the yellow light spot produced by the center portion 1. The light distribution curve is shown in the figure below. Figure 4 As shown, the spot pattern of the illuminated surface is as follows Figure 5 As shown, a uniform light spot is finally formed and light utilization efficiency is improved. Here, the curvatures of the first curved surface 211, the second curved surface 221, the third curved surface 231 and the central portion 1 are not restricted, and precise light control can be achieved to make the light spots overlap evenly and improve light utilization efficiency.

[0035] Specifically, such as Figure 1 and Figure 2 As shown, when observed from the vertical section, the vertical distance between the center portion 1 and the surface of the light source, which is closest to the light source, is 2.6 mm, which can maximize the use of light emitted from the side of the light source and further improve the light utilization rate.

[0036] Specifically, such as Figure 1 and Figure 2 As shown, the thickness of the central portion 1 is 1-1.5 mm, which is thinner than the outer shell of a traditional lamp tube, reducing the optical path of light in the lens and improving light utilization.

[0037] Specifically, such as Figure 2 and Figure 3 As shown, two mounting locations 3 are provided, one at the outer edge of each of the two arc-shaped members 24 and one side of the third protrusion 23. The two mounting locations 3 are symmetrical about the central portion 1. The mounting locations 3 are fixedly connected to the lens and other components of the lamp tube using glue. The connection method is not limited here, and screws or buckles can also be used to achieve a flexible connection, facilitating subsequent replacement of different lenses according to actual needs and providing better adaptability.

[0038] Specifically, in this embodiment, the lens is made of mixed PC material. In addition, silicone, glass and other materials are also acceptable. The material is not limited here, as long as it can effectively control the light source and uniform the light spot.

[0039] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A T8 lamp lens, arranged outside the light source, characterized in that: The light source comprises a central portion corresponding to the light source and two continuous convex portions, wherein the two continuous convex portions are symmetrically arranged with respect to the central portion, and outer surfaces of the central portion and the two continuous convex portions form an arc surface.

2. The T8 tube lens according to claim 1, characterized in that: The continuous raised portion includes an arc-shaped piece fixed on one side of the central portion, a first protrusion, a second protrusion and a third protrusion arranged in sequence on the inner side of the arc-shaped piece, and the first protrusion is arranged at one end of the arc-shaped piece close to the central portion, and the arc-shaped piece, the first protrusion, the second protrusion and the third protrusion all extend straight along their length direction.

3. The T8 lamp lens according to claim 2, characterized in that: A first curved surface, a second curved surface and a third curved surface that bulge outwards are formed on the first protrusion, the second protrusion and the third protrusion respectively, for controlling the light emitted from the side of the light source.

4. The T8 lamp tube lens according to claim 3, characterized in that: The curvature of the first curved surface is 0.40, the curvature of the second curved surface is 0.51, and the curvature of the third curved surface is 0.

33.

5. The T8 lamp tube lens according to claim 1, characterized in that: The curvature of the central portion is 0.

05.

6. The T8 tube lens according to claim 1, characterized in that: The vertical distance between the central portion and the light source is 2.6 mm.

7. The T8 lamp lens according to claim 1, characterized in that: The thickness of the central portion is 1-1.5 mm.

8. The T8 lamp lens according to claim 2, characterized in that: It also includes two mounting positions, which are respectively arranged on the outer edges of the two arc-shaped parts and on one side of the third protrusion, and the two mounting positions are symmetrical about the central part.

9. The T8 lamp tube lens according to claim 1, characterized in that: The lens is made of mixed PC material.

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