CN103411176A - Improved structure of LED lens - Google Patents

Abstract

An improved structure of LED lens is provided for combining with an LED light source to improve the light emitting effect, the improved structure of LED lens has a main body which is a truncated cone and is axisymmetric with a central axis, the top of the cone of the main body is concavely provided with a light incident surface, the bottom of the cone of the main body is provided with a light emergent surface, the side wall of the main body is provided with an optical curved surface, the improved structure of LED lens is characterized in that: the light incident surface of the body is formed at a first divergence point by convergence, the first divergence point is positioned at the central axis, and a multi-zone reflection part is formed on the optical curved surface, so that light entering the body from the light incident surface is uniformly distributed and emitted from the light emitting surface.

Description

Improved structure of LED lens

technical field

The invention belongs to the field of light-emitting diode lenses, in particular to an improved structure of a light-emitting diode lens that uniformly distributes centrally concentrated light and avoids bright areas when looking directly at it by multi-regional reflection. the

Background technique

Light-emitting diodes as light sources have become the development trend of the lighting industry, and converting point light sources of light-emitting diodes into large-scale and uniform light is an important research direction for the development of light-emitting diode lighting. Combining light-emitting diodes with lenses is a method that can improve lighting efficiency and effectively convert light effects. Using the basic principles of light refraction and reflection, the light from high-power point light sources of light-emitting diodes can be transformed into soft and uniform lighting. Most of the commonly used LED lenses can be divided into two types: cup-shaped or hemispherical. After the light is emitted from the LED, it is refracted twice and emitted from the lens. The cup-shaped LED lens uses the total reflection effect of the side of the cup to make the light gather upwards to form a uniform lighting range, while the hemispherical LED lens uses the curvature of the sphere to cause the light refraction effect, making the light point upwards Gather, also get a uniform lighting range. the

Although these designs can effectively change the light output of the LEDs so that the light can be evenly illuminated in a fixed range of lighting areas, they still cannot avoid the lighting effect that the central area is brighter and the outer circle becomes darker, so that it can still be recognized by the human eye. The light-emitting diode light source at the bottom. In addition, the curved surface of the side of the cup and the curved surface of the hemisphere are mostly smooth, but when the human eye looks directly at the same viewing angle, only a fixed area of light illuminates the direction of the viewing angle, resulting in visually bright spots. Due to these defects, although the existing LED lens can provide uniform light output and illumination, it still cannot make the LED into a lighting fixture that human eyes can directly see. The prior art generally provides a lens that directs light to the side or the back. The design of the lens can direct the light emitted from the center to the side or other angles to produce an optical effect of uniform astigmatism. Since the light incident surface and the direction of the light are almost perpendicular, the direction of the light source toward the front is almost unchanged. Directly irradiating to the light-emitting surface, the direction can be changed through refraction on the light-emitting surface. However, because the incident angle of light will affect the amount of refracted and reflected light, its optical effect is still greatly limited. In addition, these designs still cannot improve the light provided by the lens at the same viewing angle when the naked eye is looking directly. There is still a bright area and other dark areas. the

In view of the above shortcomings, the present invention provides an improved LED lens structure that can effectively prevent light from concentrating in the central area and causing bright areas when the human eye looks directly, so that the light is more comfortable and uniform when the lamp is used. the

Contents of the invention

One object of the present invention is to provide an improved LED lens structure in which the light on the wall is concentrated in the center and the illuminance is uniform, and the bright area is avoided when the human eye looks directly at it. the

To achieve this purpose, the improved structure of LED lens of the present invention is used to combine with a LED light source to improve the light output effect. The improved structure of LED lens has a body, which is a truncated cone and centered on a central axis The line presents axial symmetry, the conical top of the body is concavely formed to form a light-incident surface, the conical bottom of the body is formed to have a light-emitting surface, and the side wall of the body is formed with an optical curved surface. The improved structure of the LED lens is characterized in that: The light incident surface of the body is converged and shaped at a first divergence point, and the first divergence point is located at the position of the central axis, and a multi-region reflector is formed on the optical curved surface, so that the incident light The light entering the main body is uniformly distributed and emitted from the light-emitting surface to avoid uneven visual effects caused by the entire bright area. The multi-region reflection part has a plurality of grid structures, and the side sections of each grid structure Straight lines or smooth curves, and the borders are quadrangular or hexagonal, respectively. In order to enhance the effect of reflection, the improved structure of the light emitting diode lens further includes a reflective layer, which is arranged outside the main body and only covers the optical curved surface and the grid structures. the

In order to enhance the effect of dispersing light in the central area, the light-emitting surface is converged and shaped at a second divergence point, and the second divergence point is located at the position of the central axis and set relative to the position of the first divergence point, so that the light distribution is more even . the

In order to make the improved structure of the light-emitting diode lens easy to use, it further includes at least one mounting member, which is arranged on the cone top, cone bottom, or both of the body. the

For the aforementioned purpose, the present invention also provides an improved LED lens structure for combining with an LED light source to improve the light output effect. The improved LED lens structure has a body, which is a truncated cone with a central The axis line presents axial symmetry, the conical top of the body is concaved to form a light incident surface, the conical bottom of the body is formed with a light exit surface, and the side wall of the body is formed with an optical curved surface. The light-emitting diode lens has an improved structure. In that: the light-emitting surface of the main body is converged and shaped at a second divergence point, and the second divergence point is located at the central axis, and a multi-region reflection part is formed on the optical curved surface, so that the The light entering the main body from the light-incident surface is uniformly distributed and emitted from the light-emitting surface to avoid uneven visual effects caused by the entire bright area. The multi-region reflection part is a plurality of grid structures, and each grid structure The side profile is a straight line or a smooth curve. In order to enhance the effect of reflection, the improved structure of the light emitting diode lens further includes a reflective layer, which is arranged outside the main body and only covers the optical curved surface and the grid structures. the

To achieve the aforementioned purpose, the present invention further provides an improved LED lens structure for combining with an LED light source to improve the light output effect. The improved LED lens structure has a body, which is a truncated cone with a central The axis line presents axial symmetry, the conical top of the body is concaved to form a light incident surface, the conical bottom of the body is formed with a light exit surface, and the side wall of the body is formed with an optical curved surface. The light-emitting diode lens has an improved structure. In that: a multi-area reflection part is formed on the optical curved surface, so as to evenly distribute the light entering the body from the light incident surface and emit it from the light exit surface, so as to avoid uneven visual effects caused by the entire bright area. The regional reflection part is a plurality of grid structures, and the side sections of each of the grid structures are straight lines or smooth curves, and the frames are respectively quadrangular. In order to enhance the effect of reflection, the improved structure of the light emitting diode lens further includes a reflective layer, which is arranged outside the main body and only covers the optical curved surface and the grid structures. the

Through the above design, the direct light in the central area can be refracted to different angles through the light incident surface, and the light can be effectively prevented from concentrating in the central area, so that the light-emitting diodes of the point light source can be transformed into a uniform illuminance distribution after being converted by the lens. At the same time, the multi-area reflective part can disperse the light and reflect it from the structure of different areas to the same viewing angle, avoiding the discomfort caused by the whole bright area produced by the smooth reflective area when the human eye looks directly, and thus makes the lamp provide direct viewing for the naked eye when in use. The timeline is more comfortable and even. the

Description of drawings

Fig. 1 is a perspective view of the first embodiment of the present invention. the

Fig. 2a is a schematic cross-sectional view of the first embodiment of the present invention. the

Fig. 2b is a sectional view (1) of another aspect of the first embodiment of the present invention. the

Fig. 2c is a sectional view (2) of another aspect of the first embodiment of the present invention. the

Fig. 3a is a schematic diagram (1) of the multi-area reflection part of the present invention. the

Fig. 3b is a schematic diagram (2) of the multi-area reflecting part of the present invention. the

Fig. 4 is a perspective view of the second embodiment of the present invention. the

Fig. 5 is a schematic cross-sectional view of the second embodiment of the present invention. the

Fig. 6 is a schematic diagram of the use of the present invention. the

Fig. 7a is a perspective view of the third embodiment of the present invention. the

Fig. 7b is a schematic cross-sectional view of the third embodiment of the present invention. the

Fig. 8a is a three-dimensional appearance view of the fourth embodiment of the present invention. the

Fig. 8b is a schematic cross-sectional view of the fourth embodiment of the present invention. the

Detailed ways

Please refer to FIG. 1 , which is a perspective view of a preferred embodiment of the present invention. As shown in the figure, the improved LED lens structure provided by the present invention has a body 1, which is a truncated cone, and is axisymmetric with a central axis 2. The conical top of the body 1 is concavely formed to form a The light surface 10 allows the light to enter the main body 1 through the light incident surface 10 and refract when entering the main body 1 . The bottom of the cone of the main body 1 is formed with a light emitting surface 12 through which the light exits the main body 1 to provide lighting and other functions. The side wall of the main body 1 is formed with an optical curved surface 14, the optical curved surface 14 describes the shape of the cone-shaped body that forms the main body 1, such as radian, curvature, and pyramidal body height, and provides the main optics of the improved structure of the light-emitting diode lens. Effect. The improved structure of the light emitting diode lens is characterized in that the light incident surface 10 of the body 1 is convergently shaped at a first divergence point 100, and the first divergence point 100 is located at the position of the central axis 2, so that the first The diverging point 100 is located on the path of the direct light, so that the light enters the main body 1 from the first diverging point 100 to be deflected and refracted, reducing the amount of light entering the main body 1 in a straight line. In addition, a multi-region reflection part 140 is formed on the optical curved surface 14, so that the light entering the body 1 from the light incident surface 10 is evenly distributed through the multi-region reflection part 140 and emitted from the light exit surface 12 to avoid large-area bright spots. district. The multi-area reflector 140 is a plurality of grid structures 1401, and the appearance of a single grid of these grid structures 1401 can be quadrilateral or hexagonal. In this embodiment, the appearance of each grid is quadrilateral. The cone tops are arranged adjacent to each other to the cone bottom of the body 1, so that the edges of the grid structures 1401 form a radial line extending from the cone top of the body 1 to the cone bottom, and a plurality of circles centered on the central axis line 2. The grids of increasing size are formed by the crossing of two concentric circles, and the side sections in the grid structures 1401 are straight lines or smooth curves, so as to provide non-directional light reflection effects. the

Please refer to FIGS. 2a-2c, which are cross-sectional views of different aspects of the first embodiment of the present invention. As shown in the figure, the side sections of the grid structures 1401 are smooth curves protruding outward, which are connected with each other to form the multi-region reflection part 140 which is generally wavy. The curvature and appearance of the light-incident surface 10 are matched with the optical curved surface 14 to provide the best lighting effect. Due to the nature of light, total reflection will not occur when passing from an optically sparse medium to an optically dense medium. , so designing at this end can be more effective and easily improve the effect of refracting light without increasing the complexity of optical design due to light reflection. Discussing the light path directly entering the lens, as shown in Figure 2a, the slope of the light incident surface 10 changes so that the light that directly enters the body 1 is deflected at a large angle in the central area of the light incident surface 10. The edge area of the light incident surface 10 produces deflection at a smaller angle, thereby increasing the amount of light irradiated on the optical curved surface 14 . The slope of the light incident surface 10 is fixed so that the light entering the main body 1 is evenly deflected towards a fixed angle, which is smaller than the deflection angle of the light in the central area in Figure 2a, and the incident light can be avoided for light sources with lower brightness. The light in the central area of the surface 10 is excessively divergent to cause a dark area. As shown in Figure 2b, the light incident surface 10 is composed of two different slopes, the light deflection angle in the central area is smaller, and the light deflection angle in the outer side is larger, so that the central area of the light incident surface 10 is directly The light refraction effect is slight and the refraction in the edge area is more obvious. In addition, as shown in Figure 2c, the light incident surface 10 is formed with a fixed slope and a curved surface, so that the refraction of the light entering the body 1 produces localized more subtle changes, making the optical effect more refined. In addition to the above-mentioned implementation, the shape and optical design of the light-incident surface 10 can be further subdivided into multiple sections of curvature, or each part produces a local structure of high and low, concave and convex, to increase or reduce the refraction effect of light, and to match the optical curved surface 14 designed to achieve the best lighting effects and visual experience. the

Please refer to FIGS. 3a and 3b , which are two schematic diagrams of the multi-area reflection part of the present invention. As shown in the figure, the multi-region reflector 140 is a plurality of grid structures 1401, and the side sections of each of the grid structures 1401 are smooth curved surfaces. As shown in FIG. 3a, the side sections of the grid structures 1401 It is a smooth curved surface that protrudes outward. Since each of the grid structures 1401 has a similar curved surface, when the naked eye looks at the light-emitting surface 12 in a direction perpendicular to the light-emitting surface 12, the light passes through the grid structures respectively. One side of 1401 is reflected to the same viewing angle, as indicated by the light of "-·-·→" in the figure. Therefore, the whole bright surface is not presented to human eyes, but the small bright surfaces respectively placed in a part of the grid structures 1401 . It should be noted that since the multi-area reflectors 140 are used to reflect light to the light-emitting surface 12, the effect of total reflection of light should be considered during design. The curved surfaces of each grid structure 1401 make the light The incident angle is greater than the critical angle of total reflection (critical angle θc=inverse function sin ⁻¹ (1/D) of the lens refractive index D), so as to reduce the amount of light refracted and dissipated from the optical curved surface 14 . In addition, in order to enhance the function of reflection and increase the amount of light reflected to the light-emitting surface 12, the multi-region reflective part 140 further includes a reflective layer 16, which is arranged on the outside of the main body 1 and covers only the optical curved surface 14 and the nets. Lattice structure 1401, the reflective layer 16 can be coated with high reflectivity materials such as metal, PP or PET, so as to prevent the light entering the main body 1 from passing through the main body 1 from the optical curved surface 14, and then contact the reflective layer 16 The light is reflected to the light-emitting surface 12, thereby increasing the amount of light emitted to improve brightness.

Similarly, when the light-emitting surface 12 is viewed from the side, it is also reflected to the viewing angle by a part of the grid structures 1401. Such a design can not only avoid the bright and dark areas on the entire surface to enhance the soft feeling when the naked eye is looking directly at it, but also because the shape of the optical curved surface 14 is changed by the multi-area reflective part 140, it can be reflected to the area of the same viewing angle All over the optical curved surface 14 is not limited to one area, thus making it more uniform in view. The side sections of the grid structures 1401 shown in Fig. 3b are inwardly concave smooth curved surfaces, which have similar but opposite effects to those of the convex structures in Fig. 3a. The positions of the light-emitting areas of the equal grid structure 1401 are opposite. Taking the perspective of the naked eye looking at the light-emitting surface 12 as an example (the light of "-·-·→" in the figure), the light reflection area in Figure 3a is the grid structure 1401 is away from the light-emitting surface 12 , and the light reflection area in FIG. 3 b is where the grid structures 1401 are close to the light-emitting surface 12 . Although the reflective areas of the concave and convex two grid structures 1401 are different at the same viewing angle, they both provide the LED lens with the effect of improving the light uniformity of the structure. the

Please also refer to FIGS. 4 and 5 , which are perspective views and schematic cross-sectional views of the second embodiment of the present invention. As shown in the figure, the light-emitting surface 12 of the improved structure of the light-emitting diode is converged and shaped at a second divergence point 120 to enhance the light refraction effect in the central area, and the second divergence point 120 is located at the central axis The position of the line is set relative to the position of the first divergence point 100. When the light from the main body 1 passes through the multi-region reflector 140 (as shown in the figure, it is the grid structures 1401 whose section is recessed toward the main body 1) and touches the light-emitting surface 12, a second time will occur. Refraction, thus causing the light to be deflected again. Since the light incident surface 10 and the optical curved surface 14 both have the effect of uniform light, the structural design of the light exit surface 12 can further correct the effect of light exit, improve the local or partial light effect, and make the light distribution more accurate. Uniform, it is worth mentioning that the multi-area reflector 140 is not limited to the grid structure of the same pattern structure, but can also be composed of irregular polygons. Through the irregular design of the multi-area reflector 140, the reflective The light path is more irregular, thus improving the uniformity of the light. the

Please also refer to FIG. 6 , which is a schematic diagram of the implementation of the present invention. As shown in the figure, the LED improved structure further includes at least one mounting member 3, which is arranged on the cone top of the body 1, the cone bottom of the body, or both, so as to install an LED light source 4, And the improved light emitting diode structure is installed on the used lamps (not shown in the figure). the

Please also refer to FIG. 7 a and FIG. 7 b , which are a perspective view and a schematic cross-sectional view of a third embodiment of the present invention. The present invention also provides different means to achieve the effect of uniform astigmatism. As shown in the figure, the improved structure of the light-emitting diode lens has a truncated conical body 7, which is axisymmetric with a central axis 2'. The body 7 The conical top is recessed to form a light incident surface 70 for accommodating the LED light source 4 ′ and allowing light to enter the main body 7 through the light incident surface 70 . The bottom of the cone of the body 7 forms a light-emitting surface 72, and is characterized in that the light-emitting surface 72 is converged and shaped at a second divergence point 720, and the second divergence point 720 is located at the position of the central axis 2', so that After the light directly enters the body 7 , it is deflected from the second diverging point 720 to cause refraction, reducing the amount of light emitted from the body 7 in a straight line. The side wall of the body 7 is an optical curved surface 74 to describe the conical side radian, curvature, and pyramid height of the body 7, and is characterized in that a multi-region reflection part 740 is formed on the optical curved surface 74 According to this, the light entering the main body 7 from the light incident surface 70 is uniformly distributed through the multi-region reflector 740 and emitted from the light exit surface 72 to avoid large-area bright areas. The multi-area reflector 740 is a plurality of grid structures 7401. In this embodiment, each of the grid structures 7401 is hexagonal in shape, adjacent to each other to form a honeycomb and arranged from the top of the cone of the body 7 to the bottom of the cone. And the side sections of each grid structure 7401 are straight lines or smooth curves to provide different light reflection effects. In this structure, when the light enters the main body 7 from the light incident surface 70, it is refracted once and irradiated to the multi-region reflection part 740, and is reflected at the curved or straight edge of the grid structure 7401, thus spreading the light To different viewing angles, in addition, the first refraction angle is not large and the light from the light incident surface 70 directly to the light exit surface 72 is converging through the light exit surface 72 to the design of the second divergence point 720, so that the light goes to the edge Refraction thus makes the light distribution more even. And in order to strengthen the function of reflection, so that the amount of light reflected to the light-emitting surface 72 increases, the improved structure of the light-emitting diode lens further includes a reflective layer 76, which is provided on the outside of the main body 1 with a material with high reflectivity such as metal, PP or PET. Only covering the optical curved surface 74 and the grid structures 7401 reduces the amount of light refracted out of the body 7 from the optical curved surface 74, and then reflects to the light-emitting surface 72 due to contact with the reflective layer 76, thereby increasing the amount of light output to increase brightness. the

Please also refer to FIG. 8a and FIG. 8b , which are a perspective view and a schematic cross-sectional view of a fourth embodiment of the present invention. The present invention also provides different means for the light emitting diode light source 4" of different light emitting types to achieve the effect of astigmatism uniformity. As shown in the figure, the improved structure of the light emitting diode lens also has a truncated conical body 8, with a The central axis 2" is axisymmetric, and a light-incident surface 80 is concavely formed on the conical top of the body 8 for accommodating the light-emitting diode light source 4" and allowing light to enter the body 8 through the light-incidence surface 80, The light emitting surface 82 at the bottom of the cone of the main body 8 diverges to produce lighting effects. The side wall of the main body 8 is an optical curved surface 84 to describe the shape of the conical side of the main body 8, such as radian, curvature, and pyramidal height. And it is characterized in that a multi-region reflection part 840 is formed on the optical curved surface 84, so that the light entering the body 8 from the light incident surface 80 is evenly distributed through the multi-region reflection part 840 and emitted from the light exit surface 82 to avoid large The bright area of the area. The multi-area reflector 840 is a plurality of grid structures 8401. In this embodiment, each of the grid structures 8401 is another hexagonal shape, which is adjacent to each other and becomes like a feather grid by the body 8 The top of the cone is arranged to the bottom of the cone, and the side section of each grid structure 8401 is a straight line or a smooth curve. When the light-emitting diode light source 4" has a low brightness, or is composed of more than two light-emitting diodes, the light-emitting diode The divergent light from the light source 4" is not concentrated in a bright spot, so the central area does not need to provide a special structure of astigmatism to irradiate the multi-area reflector 840, and it is reflected on the curved or straight edge of the grid structure 8401, thus distributing the light Distribute to different angles of view, and avoid the situation of single angle of view to produce bright area.And in order to reduce the amount of light refracted out of the body 8 from the optical curved surface 84, so that the amount of light reflected to the light-emitting surface 82 increases, the improved structure of the light-emitting diode lens is more It includes a reflective layer 86, which is arranged on the outside of the main body 1 and covers the optical curved surface 84 and the grid structures 8401 with high reflectivity materials such as metal, PP or PET, thereby increasing the amount of light emitted to improve brightness.

To sum up, when the present invention is implemented, it can effectively refract the light entering the lens to different angles, greatly reduce the high-brightness direct light of the light-emitting diode point light source and the illuminance drop at the edge, so that the light passing through the lens is uniform across the entire surface of brightness. The converging design on the light incident surface not only effectively improves the light refraction angle, but also is convenient and effective, and it is supplemented by the design of the light exit surface, which further improves the uniformity of the light output. The side of the lens is designed with multi-area reflection, which can distribute the light of the same viewing angle in different areas, avoiding the visual discomfort caused by the bright surface of the whole piece, and making the light of illumination more uniform. the

The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and other transformations are also within the scope of this case; therefore, those who are familiar with this technology are equivalent or easy Changes, equivalent changes and modifications made without departing from the spirit and scope of the present invention shall be covered by the patent scope of the present invention. the

Claims (15)

1. LED lens structure-improved, be provided with being combined to improve with a LED source light effect, this LED lens structure-improved has a body, for truncated cones shape body and with a center hub line, present axial symmetry, the vertex of a cone of this body is arranged with and is formed with an incidence surface, the cone bottom shape Cheng Youyi exiting surface of this body, and the sidewall of this body is formed with an optical surface, this LED lens structure-improved is characterized in that:

This incidence surface of this body is brought together and is formed in one first divergence point, and this first divergence point is positioned at this center hub line position, on this optical surface, form again a multizone reflecting part, will be uniformly distributed by this exiting surface and penetrate from the light that incidence surface enters this body according to this.

2. as the LED lens structure-improved as described in the 1st of claim, wherein, this exiting surface is to bring together to form in one second divergence point, and this second divergence point be positioned at this center hub line position and relatively this first divergence point position arrange.

3. as the LED lens structure-improved as described in claim the 1st or 2, wherein, this multizone reflecting part is a plurality of networks, and the adjacent spread configuration of this Iso-lattice truss, and this Iso-lattice truss is adjacent spread configuration.

4. as the LED lens structure-improved as described in the 3rd of claim, wherein, respectively the side section of this network is straight line or smoothed curve.

5. as the LED lens structure-improved as described in the 4th of claim, wherein, respectively the frame of this network is respectively quadrangle or hexagon.

6. as the LED lens structure-improved as described in the 3rd of claim, wherein, this multizone reflecting part more comprises a reflecting layer, is located at this body outside and only coats this optical surface and this Iso-lattice truss.

7. as the LED lens structure-improved as described in the 3rd of claim, more comprise at least one installation component, at the bottom of being located at the cone of the vertex of a cone, this body of this body, genetic system.

8. LED lens structure-improved, be provided with being combined to improve with a LED source light effect, this LED lens structure-improved has a body, for truncated cones shape body and with a center hub line, present axial symmetry, the vertex of a cone of this body is arranged with and is formed with an incidence surface, the cone bottom shape Cheng Youyi exiting surface of this body, and the sidewall of this body is formed with an optical surface, this LED lens structure-improved is characterized in that:

This exiting surface of this body is to bring together to form in one second divergence point, and this second divergence point is positioned at this center hub line position, on this optical surface, form again a multizone reflecting part, will be uniformly distributed by this exiting surface and penetrate from the light that incidence surface enters this body according to this.

9. as the LED lens structure-improved as described in the 8th of claim, wherein, this multizone reflecting part is a plurality of networks, and this Iso-lattice truss is adjacent spread configuration.

10. as the LED lens structure-improved as described in the 9th of claim, wherein, respectively the side section of this network is straight line or smoothed curve.

11. as the LED lens structure-improved as described in the 9th of claim, wherein, this multizone reflecting part more comprises a reflecting layer, is located at this body outside and only coats this optical surface and this Iso-lattice truss.

12. LED lens structure-improved, be provided with being combined to improve with a LED source light effect, this LED lens structure-improved has a body, for truncated cones shape body and with a center hub line, present axial symmetry, the vertex of a cone of this body is arranged with and is formed with an incidence surface, the cone bottom shape Cheng Youyi exiting surface of this body, and the sidewall of this body is formed with an optical surface, this LED lens structure-improved is characterized in that:

On this optical surface, form a multizone reflecting part, will be uniformly distributed by this exiting surface and penetrate from the light that incidence surface enters this body according to this.

13. as the LED lens structure-improved as described in the 12nd of claim, wherein, this multizone reflecting part is a plurality of networks, and the adjacent spread configuration of this Iso-lattice truss.

14. as the LED lens structure-improved as described in the 12nd of claim, wherein, respectively the side section of this network is straight line or smoothed curve.

15. as the LED lens structure-improved as described in the 13rd of claim, wherein, this multizone reflecting part more comprises a reflecting layer, is located at this body outside and only coats this optical surface and this Iso-lattice truss.

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