TWM447967U - LED optical lens - Google Patents

Description

LED optical lens

This creation is related to the technical field of optical lenses, in particular to an LED optical lens that uses the principle of secondary optics to change the illumination angle, luminosity distribution and illuminance distribution of the original light-emitting diodes, to adjust the illumination area to conform to various types of lamps. Different needs.

In recent years, the lighting market has been experiencing a wave of reforms due to its low power consumption, high efficiency and long life. This makes LEDs widely used in displays and advertising billboards instead of traditional light sources. And various types of lamps, such as street lights, patio lights or table lamps. However, compared with the conventional light source, the light divergence angle of the LED is small, so that the illumination range is limited when applied to the luminaire, or the brightness of the center of the illumination range is greatly different from that of the periphery due to the excessive concentration of the center light. Unable to provide even lighting effects. In this regard, how to use the secondary optics principle to improve the uniformity of the illumination illuminance, illuminating angle and illumination of the LED light source, so as to provide the best illumination state under various conditions of use, that is, related to the field. The industry is keen to improve the subject.

In view of this, the creator feels that he has tried his best to study it, and based on his years of experience in the industry, he has successively proposed and approved the Taiwan Announcement No. M380486 patent to use symmetry. The structural characteristics of the lens enable the LED light source to be refracted by the lens to produce a symmetrical, wide-area illumination with bright illumination.

In view of the problems of the prior art, the purpose of the present invention is to provide an LED optical lens to change and adjust the illumination angle and illumination of the LED light source by using the principle of secondary optics, so as to adjust the illumination range and the uniformity effect.

In order to achieve the above object, the LED optical lens of the present invention is combined with an LED for guiding the light of the LED to produce a better light-shaped layout, and the LED optical lens has a lens body including a light-emitting surface and a light-emitting surface. Side curved surface and a light surface. The illuminating surface is a circular surface and has a diameter of 10.3 to 10.74 mm (mm). The side surface is composed of a plurality of curved surface points, and one side edge of the side curved surface is connected to the light emitting surface, and the other side edge of the side curved surface forms a circular reference surface, wherein the reference surface is The distance from the illuminating surface is 5.2 mm. And the edge of the light incident surface is connected to the edge of the reference surface of the side curved surface, and the light emitting surface, the side curved surface and the light incident surface are closed to form an outer surface of the lens body, and the lens body is The illuminating surface is recessed to form an accommodating chamber for accommodating the LED.

Wherein, any two straight lines passing through one of the reference planes and orthogonal to each other on the reference plane are defined as an X-axis direction and a Y-axis direction, and the center of the circle is an origin of a three-dimensional space coordinate, and the lens body has a YZ plane The base surface is mirror-symmetrical on the X-axis; the lens body is based on the XZ plane and is mirror-symmetrical on the Y-axis. Furthermore, the distances from the curved points to the X, Y, and Z axes are greater than or equal to zero and have a relative error p, respectively, when a unit coordinate length is 1 mm, -0.05 mm ≦p ≦ 0.05 mm.

Thus, in an embodiment, the curved points are on the X-Z coordinate plane, and each point (x, z) is (2.00, 0), (3.32, 1.73), (4.32, 3.47), (5.15, 5.20); on the YZ coordinate plane, each point (y, z) is (2.00, 0), (3.32, 1.73), (4.32, 3.47), (5.15, 5.20) .

Or in another embodiment, the curved points are on the XZ coordinate plane, and each point (x, z) is (1.97, 0), (3.21, 1.73), (4.30, 3.47), (5.37, 5.20): On the YZ coordinate plane, each point (y, z) is (1.97, 0), (3.21, 1.73), (4.30, 3.47), (5.37, 5.20).

In addition, in order to assemble the LED optical lens and the LED, the present invention further includes an engaging body, and the engaging system is disposed on a side of the light emitting surface for engaging and fixing with respect to an LED substrate or an LED bracket. The circumference of the engaging body is set on a bright surface and the surface is a honeycomb surface

In order for your review board to have a clear understanding of the content of this creation, please refer to the following description and matching drawings.

Please refer to FIGS. 1 and 2, which are respectively a schematic view of a preferred embodiment of the present invention and a cross-sectional view of the first embodiment in an X-Z plane. As shown, the LED optical lens 1 is coupled to an LED (not shown) for directing light from the LED to produce a preferred light profile. The LED optical lens 1 has a lens body 10 with a top, a wide bottom and a narrow body. The lens body 10 has a bottom diameter of 4 mm and includes a light exit surface 100, a side curved surface 101 and a light incident surface 102. The light-emitting surface 100 is a circular surface having a diameter of 10.3 mm, and according to the geometric principle: the point constitutes a line, and the basic concept of the line-constituting surface, the side curved surface 101 is composed of a plurality of curved surface points 1010. One side edge of the side curved surface 101 and the light exit surface 100 are connected to each other, and the other side edge frame forms a circular reference surface, and the distance from the reference surface to the light exit surface 100 is 5.2 mm. The light incident surface 102 The edge of the reference surface is interconnected with the edge of the reference surface, such that the light-emitting surface 100, the side curved surface 101 and the light-incident surface 102 are closed to form an outer surface of the lens body 10, and the lens body 10 is concave at the light-incident surface 102. Forming an accommodation chamber. The bottom of the accommodating chamber has a diameter of 3.17 mm for accommodating the LED, and the upper portion thereof is slightly convex and curved.

To define the curve and the curved surface of the side curved surface 101 by the curved surface points 1010, firstly, any two straight lines passing through one of the reference surfaces and orthogonal to each other on the reference surface may be defined as an X-axis direction and a Y-axis direction, respectively. And make the center of the circle the origin of the three-dimensional space coordinates. Since the present invention is a symmetrical lens structure, the lens body 10 is mirror-symmetrical on the X-axis, and the X-plane is the base surface, and the lens body 10 is in Y. The axis is mirror symmetrical. There are many ways to use the surface points 1010 to create curves and surfaces, which are not described in detail here, but generally, the concept of smooth connection is used to ensure that the curve is at a given surface point 1010. The tangential slope and the curvature of the curve are also continuously connected to form a curved surface of the side curved surface 101. It can be seen that the degree of smoothness of the side curved surface 101 depends on the number of the curved surface points given 1010.

In this embodiment, the curved surface points 1010 are on the XZ coordinate plane, and each point (x, z) is (2.00, 0), (3.32, 1.73), (4.32, 3.47), (5.15, 5.20); On the YZ coordinate plane, each point (y, z) is (2.00, 0), (3.32, 1.73), (4.32, 3.47), (5.15, 5.20), and the surface points 1010 to X, Y, The Z-axis distance is greater than or equal to zero and has a relative error p, respectively, where 1 mm is a unit coordinate length, then -0.05 mm ≦p ≦ 0.05 mm. When the LED device is in the accommodation room, please refer to FIG. 3 and FIG. 4 together. In the first embodiment of the preferred embodiment, the light trace and the light distribution curve of the XZ plane, the LED light will penetrate the lens body 10 and cause refraction or reflection, etc., so that the optical path is shifted to the full angle. A light effect having a normalized light intensity of about 1 is formed at a position of about 40°. Thus, the LED optical lens 1 can be used to adjust the range of the area to be irradiated and the average light intensity.

The engaging body 11 is disposed on the lens body 10 side and connected to the light-emitting surface 100 so as to be engaged with and fixed to each other by an LED substrate. The maximum diameter of the engaging body 11 is 11.8 mm, and the surface at the center is The honeycomb surface is provided with a sun-bright surface at the periphery to enhance the divergence of the light source emitted by the LED, so that the light-emitting surface 100 is emitted from the surface of the engaging body 11 to form a uniform illumination effect.

In addition, in order to adjust the illumination range and the average light intensity to meet the actual lighting demand, the LED optical lens 1 can adjust the diameter of the light-emitting surface 100 under the fixed distance from the reference surface to the light-emitting surface 100, and can adjust the diameter The curved surface 1010 changes the curve of the side curved surface 101 and the smoothness of the curved surface to change the optical path distribution of the LED. As shown in the fifth to seventh embodiments, the second embodiment of the preferred embodiment is a cross-sectional view of the XZ plane, a trace map of the XZ plane, and a light distribution curve, respectively. 10.74mm, the points (x, z) of the surface points 1010 on the XZ coordinate plane are (1.97, 0), (3.21, 1.73), (4.30, 3.47), (5.37, 5.20); in the YZ coordinate plane The upper points (y, z) are (1.97, 0), (3.21, 1.73), (4.30, 3.47), (5.37, 5.20), and the bottom of the housing chamber has a diameter of 2.94 mm and a height of 2.2 mm. A normalized light intensity of about 1 can be obtained at a position of about 60 degrees from the full angle.

It can be seen from the above two embodiments that the light emitted by the LED passes through the The LED optical lens 1 can be normalized to a maximum light intensity of 1, and the second embodiment has a larger illumination range than the first embodiment.

The above description is only illustrative of preferred embodiments and not limiting. Any equivalent modifications or alterations to the spirit and scope of this creation shall be included in the scope of the appended patent application.

1‧‧‧LED optical lens

10‧‧‧ lens body

100‧‧‧Glossy

101‧‧‧ side surface

1010‧‧‧ curved points

102‧‧‧Into the glossy surface

11‧‧‧卡合体

Figure 1 is a schematic diagram of a preferred embodiment of the present invention.

Figure 2 is a cross-sectional view of the first embodiment of the preferred embodiment of the present invention in the X-Z plane.

Figure 3 is a light trace diagram of the first embodiment of the preferred embodiment of the present invention in the X-Z plane.

Figure 4 is a light distribution graph of the first embodiment of the preferred embodiment of the present invention.

Figure 5 is a cross-sectional view of the second embodiment of the preferred embodiment of the present invention in the X-Z plane.

Figure 6 is a light trace diagram of the second embodiment of the preferred embodiment of the present invention in the X-Z plane.

Figure 7 is a light distribution graph of a second embodiment of the preferred embodiment of the present invention.

1‧‧‧LED optical lens

10‧‧‧ lens body

100‧‧‧Glossy

101‧‧‧ side surface

1010‧‧‧ curved points

102‧‧‧Into the glossy surface

11‧‧‧卡合体

Claims (7)

An LED optical lens has a lens body comprising: a light-emitting surface, which is a circular surface having a diameter of 10.30 to 10.74 mm; and a curved surface formed by a plurality of curved points, and the side curved surface One side edge and the light emitting surface are connected to each other, and the other side edge of the side curved surface forms a circular reference surface, wherein the distance from the reference surface to the light emitting surface is 5.20 mm; and a light entrance surface, An edge of the lens is connected to the edge of the reference surface, and the light-emitting surface, the side curved surface and the light-incident surface are closed to form an outer surface of the lens body, and the light-emitting surface of the lens body is The recess forms an accommodation chamber. The LED optical lens according to claim 1, wherein any one of the reference planes passing through one of the centers of the reference planes and orthogonal to each other is defined as an X-axis direction and a Y-axis direction, respectively, and the center of the circle The origin of the three-dimensional space coordinate, the lens body is based on the YZ plane, and is mirror-symmetrical on the X-axis; the lens body is based on the XZ plane, and is mirror-symmetrical on the Y-axis, and The distance from the isosurface point to the X, Y, and Z axes is greater than or equal to zero and has a relative error p, respectively, when a unit coordinate length is 1 mm, -0.05 mm ≦p ≦ 0.05 mm. The LED optical lens of claim 2, wherein the curved points are on the XZ coordinate plane, and each point (x, z) is (2.00, 0), (3.32, 1.73), (4.32, 3.47), (5.15, 5.20); on the YZ coordinate plane, each point (y, z) is (2.00, 0), (3.32, 1.73), (4.32, 3.47), (5.15, 5.20). The LED optical lens of claim 2, wherein the curved points are on the XZ coordinate plane, and each point (x, z) is (1.97, 0), (3.21, 1.73), (4.30, 3.47), (5.37, 5.20); on the YZ coordinate plane, each point (y, z) is (1.97, 0), (3.21, 1.73), (4.30, 3.47), (5.37, 5.20). The LED optical lens of claim 1, further comprising an engaging body disposed on a side of the light emitting surface for engaging and fixing with respect to an LED substrate. The LED optical lens of claim 5, wherein the periphery of the engaging body is provided with a bright surface. The LED optical lens of claim 6, wherein the surface of the engaging body is a honeycomb surface.