CN203336467U - Polarized light-emitting diode optical lens with uniform astigmatism - Google Patents

Abstract

The utility model discloses a polarisation formula emitting diode optical lens of even astigmatism has a lens body, contains: a projection curved surface and a bottom surface. The projection curved surface is composed of a plurality of curved surface points, and the center of the bottom surface is concave towards the projection curved surface to form a containing chamber for placing at least one light-emitting diode. The optical lens of the present invention can also be enlarged or reduced in equal proportion without affecting the optical effect. Therefore, the utility model can adjust the light-emitting angle, the luminosity distribution and the illumination distribution of the original light-emitting diode, so as to uniformly present the light scattering effect of a rectangular illumination area, and further be used in various illuminations. When used for street lamp illumination, the safety of night driving and passerby can be effectively enhanced, and the requirements of energy saving, carbon saving and environmental protection of the light emitting diode can be simultaneously achieved.

Description

Polarized light-emitting diode optical lens with uniform astigmatism

technical field

The utility model is related to the field of light-emitting diode lenses, in particular to a method of using the principle of secondary optical refraction to change and adjust the light-emitting angle, luminosity distribution and illuminance distribution of the original light-emitting diode, and at the same time offset its illumination area relative to the center of the light-emitting source , and then make it present a uniform lighting effect and effectively illuminate the polarized light-emitting diode optical lens on the object to be illuminated. the

Background technique

Compared with general traditional light sources, Light Emitting Diode (LED) has the advantages of lower power consumption, high efficiency, and long life. For example, under the same brightness, its power consumption is only 1/10 of ordinary incandescent lamps and 1/2 of energy-saving lamps, but its service life can be extended to about 100 times. Therefore, LEDs have been widely used in various special related fields that require light sources in today's life. For example, it is used in the backlight module of the display, the light source of the indicator light, the general lighting equipment and so on. Among them, because LED has a particularly significant advantage in energy saving and power saving, its practicality is particularly important in the most commonly used lighting purpose. For example, it is a suitable example to apply LED light source to the lighting implementation of street lights at night. the

However, compared with traditional light sources, the light divergence angle of light-emitting diodes is smaller, so that when used in street lamp lighting, the central light is too concentrated, resulting in a huge difference in brightness between the nearby and far away parts of the street lamp, which cannot be effectively and evenly distributed. Provide road lighting. Moreover, the conventional light distribution curves mostly present a wide-angle circular normal distribution, and when applied to road lighting, they are only one-sided lighting, which will also cause unnecessary waste of local light source lighting. In this regard, there are attempts to use the principle of secondary optics to change the optical properties projected by LEDs, and to provide the best lighting conditions for various conditions of use. Taking the street lamps on both sides as an example, the lighting requirements must be able to present at least one type of lighting effect in a rectangular area, so that both parallel roads and perpendicular roads can be covered by the lighting coverage, and between two adjacent street lamps The lighting areas can also be connected and matched with each other, so that there will be no interruption of the lighting area or uneven illumination, which will affect the safety of passers-by. Therefore, how to effectively improve the projected illuminance, luminous angle, and uniformity of the irradiated light of the LED light source is a topic that relevant practitioners in this field want to improve. the

Therefore, by using the asymmetrical lens structure characteristics, the LED light source can be refracted twice by the lens to produce a lighting effect that offsets the illuminated area and is symmetrical, almost rectangular, and the illuminated area is uniformly bright. Further developed another method that can use the refraction principle of secondary optics to change and adjust the light-emitting angle and illuminance of the original light-emitting diode, and at the same time offset the illumination area from the center of the light source, so as to uniformly present the uniformity of the illumination distribution The astigmatic polarized light-emitting diode optical lens completely illuminates the LED light source on the road surface effectively and completely, and while enhancing the safety of night driving and passers-by, it can also meet the environmental protection requirements of energy saving and carbon saving. the

Utility model content

In view of the above problems, the purpose of this utility model is to provide a polarized light-emitting diode optical lens that uses the principle of secondary optics to change the uniform astigmatism of the optical characteristics of the LED. It is used to adjust the luminous angle, luminosity distribution and illuminance distribution of the original light-emitting diodes, so that it presents a uniform irradiance distribution, and while enhancing the safety of night driving and passers-by, it can also meet the environmental protection requirements of energy saving and carbon saving. the

In order to achieve the above purpose, the utility model proposes a polarized light-emitting diode optical lens with uniform astigmatism, which has a lens body, including: a projection curved surface and a bottom surface. Wherein the projected curved surface is composed of a plurality of curved surface points, wherein the edge of the projected curved surface forms a datum plane, and the datum plane has a long axis and a short axis, the long axis is the X-axis direction, and the short axis is the Y-axis direction, d is a unit coordinate length, the intersection of the major axis and the minor axis is the origin of the three-dimensional coordinates, where the points on the surface are on the X-Z coordinate plane, and each point (x, z) is (0, 7.71), ( 1.57, 7.70), (2.76, 7.59), (4.12, 7.16), (5.32, 6.33), (6.20, 5.16), (6.66, 3.93), (6.86, 2.50), (6.90, 1.16), (6.88, 0); on the X-Y coordinate plane, each point (x, y) is (0, 6.44), (1.12, 6.47), (2.61, 6.53), (3.99, 6.38), (5.13, 5.98), (6.36 , 5.15), (7.23, 4.02), (7.67, 2.54), (7.71, 1.16), (7.65, 0) and (0, -4.82), (0.91, -4.92), (2.03, -5.10), ( 3.27, -5.09), (4.40, -4.77), (5.39, -4.19), (6.28, -3.32), (6.80, -2.52), (7.28, -1.38), (7.65, 0); in Y-Z coordinates On the plane, each point (y, z) is (0, 6.62), (1.15, 6.84), (2.66, 6.85), (3.82, 6.51), (4.90, 5.82), (5.76, 4.80), (6.29 , 3.49), (6.50, 2.34), (6.65, 1.07), (6.47, 0) and (0, 6.62), (-0.98, 6.29), (-1.98, 5.76), (-2.79, 5.16), ( -3.63, 4.33), (-4.23, 3.49), (-4.67, 2.55), (-4.94, 1.61), (-4.94, 0.79), (-5.11, 0); these surface points to X, Y, The Z-axis distance is greater than or equal to zero and has a relative error p, and -d/20≤p≤d/20. And the bottom surface, its edge and the edge of the reference plane are connected to each other to form the outer surface of the lens body, and the center of the bottom surface is concaved toward the projection curved surface to form an accommodating chamber; the lens body is based on the Y-Z surface, mirrored Symmetrical to the X-axis direction, and based on the X-Z plane, mirror symmetric to the Y-axis direction. the

Enlarging or shrinking the polarized light-emitting diode optical lens structure with uniform astigmatism in equal proportions is also the main technical feature of the utility model to achieve its purpose. Wherein when the unit coordinate length d is 1mm, the relative error p is -0.05mm≤p≤0.05mm. In order to strengthen the installation of the light-emitting diode optical lens with uniform astigmatism on an LED substrate, the bottom surface may further include two engaging parts for engaging and fixing relative to the LED substrate. Each of the engaging parts includes: a first solid block and a second solid block adjacent to the first solid block, and the second solid block is provided with a column shape corresponding to the LED substrate that is engaged and fixed with each other. structure, the polarized light-emitting diode optical lens with uniform astigmatism and the LED substrate can be engaged and fixed with each other. the

The effect of this utility model is to use the aspheric wide illumination angle design of the polarized light-emitting diode optical lens to change and adjust the light-emitting angle, luminosity distribution and illuminance distribution of the original light-emitting diode through the refraction principle of secondary optics to make it appear Uniform illumination distribution, so that the illumination area projected by the light roughly corresponds to the datum plane in the direction of the long and short axes and is symmetrical on both sides. The LED light source is completely shifted by the polarized light-emitting diode optical lens to effectively and completely illuminate the road surface, and While strengthening the safety of driving at night and pedestrians, it can also meet the environmental protection requirements of energy saving and carbon saving. the

Description of drawings

Fig. 1 is a perspective view of the utility model. the

Fig. 2 is a side view of the utility model on the X-Z plane. the

Fig. 3 is a top view of the utility model on the X-Y plane. the

Fig. 4 is a sectional view of the utility model on the Y-Z plane. the

Fig. 5 is a schematic diagram of ray tracing in the X-Z plane of the present invention. the

Fig. 6 is a schematic diagram of ray tracing in the Y-Z plane of the present invention. the

Fig. 7 is a distribution diagram of the illuminance iso-illumination of the utility model equipped with LEDs. the

Fig. 8 is a luminosity and light distribution curve diagram of the utility model equipped with LEDs. the

Fig. 9 is a three-dimensional appearance view of the clamping part of the utility model. the

Detailed ways

Please refer to Fig. 1, 2, 3 and Fig. 4, which are respectively the perspective view of the utility model, the side view of the utility model on the X-Z plane, the top view on the X-Y plane and the cross-sectional view on the Y-Z plane. From the figure, the utility model provides a polarized light-emitting diode optical lens with uniform astigmatism, which has a lens body 1 including: a projection curved surface 10 and a bottom surface 12 . Wherein the projection curved surface 10 is composed of a plurality of curved surface points 102 . Using geometric principles, the basic concept of forming a line from a point, and a surface from a line, lists the surface points 102 on the projection surface 10 to further define the curve and the surface, and the number of the given surface points 102 will also determine The degree of smoothness of the projected curved surface 10 . Since there are many ways to use these surface points 102 to create curves and surfaces in engineering, they will not be described in detail here. The concept of smooth connection is mainly used to ensure that the curves are connected at the given surface point 102, so that the slope of the tangent line and the curvature of the curve are continuous, and then the projection surface 10 is constructed. the

Here, the light-emitting diode optical lens with uniform astigmatism provided by the present invention uses three-dimensional coordinates to list the corresponding positions of each surface point 102 in space. Wherein the edge of the projection curved surface 10 forms a reference plane 104, and the reference plane 104 has a major axis 106 and a minor axis 108, the major axis 106 is the X-axis direction, the minor axis 108 is the Y-axis direction, and d is a The unit coordinate is long, and the intersection of the major axis 106 and the minor axis 108 is the origin of three-dimensional coordinates, wherein the curved surface points 102 are on the X-Z coordinate plane, and each point (x, z) is (0, 7.71), (1.57, 7.70), (2.76, 7.59), (4.12, 7.16), (5.32, 6.33), (6.20, 5.16), (6.66, 3.93), (6.86, 2.50), (6.90, 1.16), (6.88, 0) ; On the X-Y coordinate plane, each point (x, y) is (0, 6.44), (1.12, 6.47), (2.61, 6.53), (3.99, 6.38), (5.13, 5.98), (6.36, 5.15 ), (7.23, 4.02), (7.67, 2.54), (7.71, 1.16), (7.65, 0) and (0, -4.82), (0.91, -4.92), (2.03, -5.10), (3.27, -5.09), (4.40, -4.77), (5.39, -4.19), (6.28, -3.32), (6.80, -2.52), (7.28, -1.38), (7.65, 0); on the Y-Z coordinate plane , with points (y, z) of (0, 6.62), (1.15, 6.84), (2.66, 6.85), (3.82, 6.51), (4.90, 5.82), (5.76, 4.80), (6.29, 3.49 ), (6.50, 2.34), (6.65, 1.07), (6.47, 0) and (0, 6.62), (-0.98, 6.29), (-1.98, 5.76), (-2.79, 5.16), (-3.63 , 4.33), (-4.23, 3.49), (-4.67, 2.55), (-4.94, 1.61), (-4.94, 0.79), (-5.11, 0). Therefore, the distances from the surface points 102 to the X, Y, and Z axes are obtained by multiplying the corresponding (x, y, z) coordinates by the unit coordinate length d, for example (xd, yd, zd). the

In addition, the distances from the curved surface points 102 to the X, Y, and Z axes can also have a relative error p, and -d/20≦p≦d/20. Therefore, within this relative error range, it is also the right scope of the utility model. However, special attention should be paid to the fact that the distances from the surface points 102 to the X, Y, and Z axes are greater than or equal to zero, so if the relative error p is less than zero, the distances from the surface points 102 to the X, Y, and Z axes are still limited to be greater than or equal to zero. the

The edge of the bottom surface 12 is connected with the edge of the reference surface 104 to form the lens body 1 , and the center of the bottom surface 12 is recessed to form an accommodating chamber 122 for accommodating LEDs. The lens body 1 is based on the Y-Z plane and is mirror-symmetrical to the X-axis direction. In this way, the overall structure of the polarized light-emitting diode optical lens with uniform astigmatism of the present invention is constituted. At the same time, the uniform astigmatism polarized LED optical lens structure provided by the utility model can be scaled up or down in equal proportions without hindering the purpose and optical effect of the utility model. In the same way, when the uniform astigmatism polarized light-emitting diode optical lens is scaled up, the relative error p will also increase accordingly. As an example, when the unit coordinate length d is 1mm, the relative error p is -0.05mm≤p≤+0.05mm. the

Please refer to FIG. 5 and FIG. 6 together, which are schematic diagrams of the light path of the utility model on the X-Z plane and light paths on the Y-Z plane, respectively. In practice, the LED is placed in the accommodation chamber 122, and then according to the principle of secondary optics, the LED light source penetrates the lens body 1 and uses the principle of refraction to deflect the light and project it on the area to be irradiated. Figure 5 is the ray tracing representation of the ray projection area in the long axis direction; Figure 6 is the ray tracing representation of the ray projection area in the short axis direction. As can be seen from the figure, the divergence trajectory of the original light-emitting diode changes its ray tracing performance when it passes through the uniform astigmatism polarized light-emitting diode optical lens. the

Please refer to Fig. 7 and Fig. 8 together, which are respectively the illuminance distribution diagram of the utility model equipped with the LED and the luminosity and light distribution curve diagram of the utility model equipped with the LED. The units of X-axis and Y-axis coordinates shown on the illuminance iso-illumination distribution map are millimeters (mm), and the left side is the illuminance meter, and its unit is lux, which is used to indicate the surface of the illuminated object. Brightness. The photometric light distribution curve is usually marked with polar coordinates to represent the luminous intensity distribution of the luminaire, that is, the way the luminous intensity of the light source is defined, and then measure the luminous intensity distribution of the luminaire at various angles. As shown in the figure, the radial coordinate of the periphery of the luminosity distribution curve is an angle, and the unit is degree (°), and the axial coordinate is luminous intensity, and the unit is candela (cd). And when the unit coordinate length d is 1mm, the long axis of a single light-emitting diode optical lens is about 15.3mm, and the short axis is about 11.3mm, and the irradiation range in the long axis direction can reach about 4500mm, and the short axis direction can reach about 4500mm. Up to 2500mm; at the same time, because the light source has directionality after passing through the lens of the utility model, and then presents different luminosity at different angles, the average illuminance value is 2.79 lux (lux); as for all the luminous flux emitted by the light source body per unit time It is 69.763 lumens (lm). La shown in FIG. 8 is the light distribution curve in the long axis direction of the illumination area in FIG. 7 ; Lb is the light distribution curve in the short axis direction in FIG. 7 . Wherein the maximum luminosity of the light source of the present utility model can reach about 50.56 candlepower (cd). the

Please refer to FIG. 9 again, which is a three-dimensional appearance view of the engaging part of the utility model. As can be seen from the figure, the light emitting diode optical lens may further include two locking portions 2 disposed on the bottom surface 12 for locking and fixing with respect to an LED substrate (not shown). In this way, the symmetrical streetlight optical lens can be quickly installed or replaced on the rear-end installation. Furthermore, each of the engaging parts may include a first solid block and a second solid block 22 adjacent to the first solid block 21, and the second solid block 22 is provided with a corresponding LED substrate. A column structure 23 is fastened and fixed, and then fixed on the LED substrate. the

The effect of the utility model is to use the aspheric wide illumination angle design of the polarized light-emitting diode optical lens to make the light source of the light-emitting diode produce a refraction effect after passing through the asymmetrical optical lens structure. Therefore, the utility model can adjust the light-emitting angle, luminosity distribution and illuminance distribution of the original light-emitting diode, so that it can evenly present a kind of astigmatism effect of a rectangular lighting area, and then it can be used in various lighting applications. For example, when used in street lighting, the lighting area where the light is projected roughly corresponds to the datum plane in the direction of the major and minor axes, resulting in a symmetrical lighting effect on both sides. Accordingly, it is possible to completely shift the irradiation area of the LED due to the polarized light-emitting diode optical lens, and then effectively and completely irradiate the road surface. It can also meet the energy-saving, carbon-saving and environmental protection requirements of the light-emitting diode itself. In addition, the optical lens of the present invention can also be scaled up or down in equal proportions without affecting the optical effect it presents, and the applicability can be greatly improved, and this will be explained here. the

According to the disclosure and teaching of the above specification, those skilled in the art to which the present utility model belongs can also change and modify the above embodiment. Therefore, the utility model is not limited to the above specific implementation manners, and any obvious improvement, replacement or modification made by those skilled in the art on the basis of the utility model shall belong to the protection scope of the utility model. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present utility model. the

Claims (4)

1. A polarized light-emitting diode optical lens with uniform astigmatism, which has a lens body, including: A projected curved surface is composed of a plurality of surface points, wherein the edge of the projected curved surface forms a datum plane, and the datum plane has a long axis and a short axis, the long axis is the X-axis direction, and the short axis is the Y-axis direction, d is a unit coordinate length, the intersection of the major axis and the minor axis is the origin of the three-dimensional coordinates, where the points on the surface are on the X-Z coordinate plane, and each point (x, z) is (0, 7.71), ( 1.57, 7.70), (2.76, 7.59), (4.12, 7.16), (5.32, 6.33), (6.20, 5.16), (6.66, 3.93), (6.86, 2.50), (6.90, 1.16), (6.88, 0); on the X-Y coordinate plane, each point (x, y) is (0, 6.44), (1.12, 6.47), (2.61, 6.53), (3.99, 6.38), (5.13, 5.98), (6.36 , 5.15), (7.23, 4.02), (7.67, 2.54), (7.71, 1.16), (7.65, 0) and (0, -4.82), (0.91, -4.92), (2.03, -5.10), ( 3.27, -5.09), (4.40, -4.77), (5.39, -4.19), (6.28, -3.32), (6.80, -2.52), (7.28, -1.38), (7.65, 0); in Y-Z coordinates On the plane, each point (y, z) is (0, 6.62), (1.15, 6.84), (2.66, 6.85), (3.82, 6.51), (4.90, 5.82), (5.76, 4.80), (6.29 , 3.49), (6.50, 2.34), (6.65, 1.07), (6.47, 0) and (0, 6.62), (-0.98, 6.29), (-1.98, 5.76), (-2.79, 5.16), ( -3.63, 4.33), (-4.23, 3.49), (-4.67, 2.55), (-4.94, 1.61), (-4.94, 0.79), (-5.11, 0); these surface points to X, Y, The Z-axis distance is greater than or equal to zero and has a relative error p, and -d/20≤p≤d/20, and A bottom surface, the edge of which is connected to the edge of the reference surface to form the outer surface of the lens body, and the center of the bottom surface is concaved toward the projected curved surface to form an accommodating chamber; the lens body is based on the Y-Z plane, mirror-symmetric to The X-axis direction, and based on the X-Z plane, is mirror-symmetric to the Y-axis direction. the 2. The uniform astigmatism polarized LED optical lens according to claim 1, wherein the unit coordinate length d is 1mm, and the relative error p is -0.05mm≤p≤0.05mm. the 3 . The polarized light-emitting diode optical lens with uniform light astigmatism according to claim 1 or 2 , further comprising two engaging portions disposed on the bottom surface for engaging and fixing with respect to an LED substrate. 4 . the 4. The polarized light-emitting diode optical lens with uniform astigmatism according to claim 3, characterized in that: each engaging portion includes a first solid block and a second solid block adjacent to the first solid block, And the second solid block is provided with a column structure corresponding to the LED substrates that are engaged and fixed with each other. the

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