JP3189855U

JP3189855U - LED optical lens structure

Info

Publication number: JP3189855U
Application number: JP2014000280U
Authority: JP
Inventors: ジャアシンウォン
Original assignee: 陳宗欣; ジャアシンウォン; 川中商事株式会社; 圓福寺ライティング株式会社
Priority date: 2013-03-01
Filing date: 2014-01-22
Publication date: 2014-04-03
Anticipated expiration: 2024-01-22

Abstract

【課題】ＬＥＤを光源とする照明器具の使用効果を向上させることができる、ＬＥＤ光学レンズの構造を提供する。
【解決手段】光学レンズ１は、透明な本体１１と、本体の台座１２に設けられてＬＥＤが収容される収容部と、収容部の上端部に形成された入光面と、本体の台座から上方へ延びて本体の外周縁に設けられた出光面１５とからなる。出光面は、本体の外周表面端縁に異なる曲率によって設けられる。また、前記本体は、短軸方向基準面Ｙに対して対称であるとともに、長軸方向基準面Ｘに対して非対称に設けられる。
【選択図】図１A structure of an LED optical lens capable of improving the use effect of a lighting fixture using an LED as a light source is provided.
An optical lens includes a transparent main body, a receiving portion that is provided on a pedestal of the main body and that accommodates an LED, a light incident surface formed at an upper end of the receiving portion, and a pedestal of the main body. The light exit surface 15 extends upward and is provided on the outer peripheral edge of the main body. The light exit surface is provided with a different curvature at the outer peripheral surface edge of the main body. The main body is symmetrical with respect to the short-axis direction reference plane Y and is asymmetric with respect to the long-axis direction reference plane X.
[Selection] Figure 1

Description

本考案は、ＬＥＤ光学レンズの構造に関し、特に、光学レンズにおける孤形表面及び台座の収容部の空間設計によって、ＬＥＤが最大輝度・光線集中・左右二側方の長軸方向に延伸する照射エリアを備えて照射することができる、ＬＥＤ光学レンズの構造に関する。 The present invention relates to a structure of an LED optical lens, and in particular, an irradiation area in which the LED extends in the major axis direction of the maximum brightness, light concentration, and left and right sides by the spatial design of the isolated surface of the optical lens and the housing portion of the pedestal. It is related with the structure of the LED optical lens which can be irradiated with.

発光ダイオード（ｌｉｇｈｔ−ｅｍｉｔｔｉｎｇｄｉｏｄｅ、略称ＬＥＤ）を照明装置の光源とすることは既に従来技術であり、各種の照明器具において広範に使用されている。一般にＬＥＤを照明器具の光源として使用する場合、外縁に二次的光学部品（例えば光学レンズ）を組み合わせて使用することが多い。これは、照らされる物品上の光形において光学的利用性と照射均一度を向上させること、及び前記二次的光学部品（例えば光学レンズ）の構造によって前記ＬＥＤ射出光線の照射エリア及び照射形状を決定することを目的としている。 The use of a light-emitting diode (abbreviated as LED) as a light source of an illuminating device is already a prior art, and is widely used in various luminaires. In general, when an LED is used as a light source of a lighting fixture, a secondary optical component (for example, an optical lens) is often used in combination with an outer edge. This improves the optical availability and illumination uniformity in the light form on the illuminated article, and the illumination area and illumination shape of the LED emitted light by the structure of the secondary optical component (eg optical lens). The purpose is to decide.

よって、前記ＬＥＤに用いられる光学レンズの構造は、ＬＥＤを光源とする照明器具の使用効能を向上させるために極めて重要な課題である。即ち、如何にして良好な光学レンズの構造を用いて、ＬＥＤを光源とする照明器具に求められる使用上の効果を発揮させるかは、ＬＥＤを光源とする照明器具を製造する業者が解決すべき技術的課題である。 Therefore, the structure of the optical lens used for the LED is a very important issue in order to improve the use efficiency of the lighting fixture using the LED as a light source. That is, a manufacturer of a lighting device using an LED as a light source should solve how to use the structure of a good optical lens to exhibit the use effect required for the lighting device using the LED as a light source. It is a technical issue.

上記に鑑み、本考案は、光学レンズにおける孤形表面及び台座の収容部の空間設計によって、ＬＥＤが最大輝度・光線集中・左右二側方の長軸方向に延伸する照射エリアを備えて照射することができる、ＬＥＤ光学レンズの構造を提供することを目的とする。 In view of the above, the present invention irradiates an LED with an irradiation area that extends in the major axis direction of the maximum luminance, light concentration, and left and right sides by the spatial design of the isolated surface of the optical lens and the housing portion of the pedestal. It is an object to provide a structure of an LED optical lens that can be used.

本考案が提供するＬＥＤ光学レンズの構造において、前記光学レンズは、透明な本体と、前記本体の台座に設けられてＬＥＤが収容される収容部と、前記収容部の上端部に形成された入光面と、前記本体の台座から上方へ延びて本体外周縁に形成された出光面とからなる。前記出光面は、本体外周表面の端縁に異なる曲率によって設けられる。また、前記本体は、短軸方向基準面Ｙに対して対称であるとともに、長軸方向基準面Ｘに対して非対称に設けられる。以上の構造により、ＬＥＤを光源とする照明器具の使用効果を向上させる。 In the structure of the LED optical lens provided by the present invention, the optical lens includes a transparent main body, a receiving portion that is provided on a pedestal of the main body and receives the LED, and an input formed at the upper end of the receiving portion. It consists of a light surface and a light output surface that extends upward from the pedestal of the main body and is formed on the outer periphery of the main body. The light exit surface is provided with different curvatures on the edge of the outer peripheral surface of the main body. The main body is symmetrical with respect to the short-axis direction reference plane Y and is asymmetric with respect to the long-axis direction reference plane X. With the above structure, the use effect of the lighting fixture which uses LED as a light source is improved.

本考案の光学レンズを示した立体図である。It is the three-dimensional view which showed the optical lens of this invention. 本考案の光学レンズを示した俯瞰図である。It is the bird's-eye view which showed the optical lens of this invention. 本考案の光学レンズを示した長軸方向の概略図である。It is the schematic of the major axis direction which showed the optical lens of this invention. 本考案の光学レンズを示した短軸方向の概略図である。It is the schematic of the short axis direction which showed the optical lens of this invention. 本考案の光学レンズの光形を示した概略図である。It is the schematic which showed the optical form of the optical lens of this invention. 本考案の光学レンズの実施例を示した概略図１である。It is the schematic 1 which showed the Example of the optical lens of this invention. 本考案の光学レンズの実施例を示した概略図２である。It is the schematic 2 which showed the Example of the optical lens of this invention.

まず、図１、図２を参照する。本考案のＬＥＤ光学レンズの構造において、光学レンズ１は、透明な本体１１と、本体１１の台座１２に設けられてＬＥＤ２が収容される収容部１３と、収容部１３の上端部に形成された入光面１４と、本体１１の台座１２から上方へ延びて本体１１外周縁に形成された出光面１５とからなる。出光面１５は、本体１１外周表面の端縁に異なる曲率によって設けられる。また、入光面１４と出光面１５は、異なる曲率によってなる。以上の構造により、収容部１３内に収容されたＬＥＤ２が発光した時、ＬＥＤ２から照射された光線は入光面１４から本体１１内に入った後、出光面１５を経由することによって偏移屈折されて所定の方向及びエリアに照射される（図６、図７を参照）。以上により、ＬＥＤ２から発される光線を最良の状態で利用することが可能となり、ＬＥＤ２を光源とする照明器具の使用効果を向上させることができる。 First, FIG. 1 and FIG. 2 will be referred to. In the structure of the LED optical lens according to the present invention, the optical lens 1 is formed on a transparent main body 11, a housing portion 13 provided on a pedestal 12 of the main body 11 and housing the LED 2, and an upper end portion of the housing portion 13. The light incident surface 14 includes a light exit surface 15 that extends upward from the base 12 of the main body 11 and is formed on the outer peripheral edge of the main body 11. The light exit surface 15 is provided on the edge of the outer peripheral surface of the main body 11 with different curvatures. Further, the light incident surface 14 and the light emitting surface 15 have different curvatures. With the above structure, when the LED 2 accommodated in the accommodating portion 13 emits light, the light irradiated from the LED 2 enters the main body 11 from the light incident surface 14, and then passes through the light exit surface 15 so as to be shifted and refracted. Then, it is irradiated in a predetermined direction and area (see FIGS. 6 and 7). As described above, the light emitted from the LED 2 can be used in the best condition, and the use effect of the lighting fixture using the LED 2 as a light source can be improved.

上述を受け、本考案の実施例について、図１、図２、図６、図７を参照する。本体１１は、短軸方向基準面Ｙに対して対称であるとともに、長軸方向基準面Ｘに対して非対称をなす。出光面１５は、本体１１最外側の周縁に設けられるとともに、台座１２と平行状に側辺線１５１が形成される。側辺線１５１が定める範囲は、出光面１５における最大面積である。また、側辺線１５１の曲率は、以下に挙げる点によって定められる。尚、本体１１は短軸方向基準面Ｙに対して対称であるため、互いに対称となる部分における一方のみを列挙し、対称となる他方については重複説明しないことを、先に断っておく。側辺線１５１は、長軸方向基準面Ｘ及び短軸方向基準面Ｙによって、第一側辺線部１５１ａと、第二側辺線部１５１ｂと、第三側辺線部１５１ｃと、第四側辺線部１５１ｄに分けられる。また、第一側辺線部１５１ａと第四側辺線部１５１ｄは対称の形状をなし、第二側辺線部１５１ｂと第三側辺線部１５１ｃは対称の形状をなす。よって、側辺線１５１の曲率について、図中では第一側辺線部１５１ａと第三側辺線部１５１ｃの座標値のみを示している。第一側辺線部１５１ａにおける長軸方向基準面Ｘとの距離をａｍｍとし、第一側辺線部１５１ａにおける短軸方向基準面Ｙとの距離をｂｍｍとした場合、第一側辺線部１５１ａは、（ａ、ｂ）：（０．０，９．１１）、（１．０９，８．８２）、（２．１４，８．２４）、（３．０９，７．５１）、（３．９８，６．５８）、（４．５４，５．６９）、（４．９４，４．５５）、（５．０２，３．４２）、（４．８３，２．２８）、（４．４，１．１４）、（４．０９，０．０）の各点からなり、その誤差値は±０．０３ｍｍである。 In view of the above, referring to FIG. 1, FIG. 2, FIG. 6, and FIG. The main body 11 is symmetric with respect to the short-axis direction reference plane Y and asymmetric with respect to the long-axis direction reference plane X. The light exit surface 15 is provided on the outermost periphery of the main body 11, and a side line 151 is formed in parallel with the base 12. The range defined by the side line 151 is the maximum area on the light exit surface 15. Further, the curvature of the side line 151 is determined by the following points. Since the main body 11 is symmetric with respect to the short-axis-direction reference plane Y, it should be noted in advance that only one of the symmetrical portions is listed, and the other is not redundantly described. The side line 151 includes the first side line part 151a, the second side line part 151b, the third side line part 151c, and the fourth axis by the major axis direction reference plane X and the minor axis direction reference plane Y. It is divided into a side line portion 151d. In addition, the first side line part 151a and the fourth side line part 151d have a symmetrical shape, and the second side line part 151b and the third side line part 151c have a symmetrical shape. Therefore, regarding the curvature of the side line 151, only the coordinate values of the first side line part 151a and the third side line part 151c are shown in the drawing. When the distance from the major axis direction reference plane X in the first side line portion 151a is amm and the distance from the minor axis direction reference plane Y in the first side line portion 151a is bmm, the first side line portion 151a is (a, b): (0.0, 9.11), (1.09, 8.82), (2.14, 8.24), (3.09, 7.51), ( 3.98, 6.58), (4.54, 5.69), (4.94, 4.55), (5.02, 3.42), (4.83, 2.28), ( 4.4, 1.14) and (4.09, 0.0), and the error value is ± 0.03 mm.

また、側辺線１５１の第三側辺線部１５１ｃにおける長軸方向基準面Ｘとの距離をｃｍｍとし、第三側辺線部１５１ｃにおける短軸方向基準面Ｙとの距離をｄｍｍをとした場合、第三側辺線部１５１ｃは、（ｃ、ｄ）：（０．０，９．１１）、（１．１２，９．１７）、（２．１６，９．１５）、（３．１７，８．９１）、（４．０８，８．４４）、（４．８７，７．８）、（５．６，６．８８）、（６．１３，５．８）、（６．４３，４．５５）、（６．５２，３．４３）、（６．５４，２．２８）、（６．５５，１．１４）、（６．５５，０．０）の各点からなり、その誤差値は±０．０３ｍｍである。 In addition, the distance between the side line 151 and the long-axis direction reference plane X in the third side line part 151c is set to cmm, and the distance from the short-axis direction reference plane Y in the third side line part 151c is set to dmm. In this case, the third side line portion 151c is (c, d): (0.0, 9.11), (1.12, 9.17), (2.16, 9.15), (3. 17, 8.91), (4.08, 8.44), (4.87, 7.8), (5.6, 6.88), (6.13, 5.8), (6. 43, 4.55), (6.52, 3.43), (6.54, 2.28), (6.55, 1.14), (6.55, 0.0) The error value is ± 0.03 mm.

続いて図３を参照する。長軸方向基準面Ｘ２から延びるとともに、台座１２と交わって形成される長軸方向頂端線１５２は、短軸方向基準面Ｙ２によって第一長軸方向頂端線部１５２ａと、第二長軸方向頂端線部１５２ｂに分けられる。また、第一長軸方向頂端線部１５２ａと第二長軸方向頂端線部１５２ｂは、対称の形状をなす。よって、図中では第一長軸方向頂端線部１５２ａの座標値のみを示している。第一長軸方向頂端線部１５２ａにおける長軸方向基準面Ｘ２との距離をｅｍｍとし、第一長軸方向頂端線部１５２ａにおける短軸方向基準面Ｙ２との距離をｆｍｍとした場合、第一長軸方向頂端線部１５２ａは、（ｅ，ｆ）：（０．０，９．１１）、（１．２１，９．０）、（２．４８，８．６３）、（３．５３，８．０２）、（４．５４，７．０６）、（５．２４，６．０）、（５．７，４．８）、（５．９３，３．６）、（６．０１，２．３２）、（６．０，１．２）、（５．９８，０．０）の各点からなり、その誤差値は±０．０３ｍｍである。 Next, referring to FIG. The long-axis direction apex line 152 extending from the long-axis direction reference plane X2 and intersecting the pedestal 12 has a first long-axis direction apex line portion 152a and a second long-axis direction apex line by the short-axis direction reference plane Y2. Divided into line portions 152b. Further, the first long axis direction apex line part 152a and the second long axis direction apex line part 152b have a symmetrical shape. Therefore, only the coordinate value of the first major axis direction top end line portion 152a is shown in the drawing. When the distance between the first major axis direction top end line part 152a and the major axis direction reference plane X2 is emm and the distance between the first major axis direction top end line part 152a and the minor axis direction reference plane Y2 is fmm, The long-axis direction apex line part 152a is (e, f): (0.0, 9.11), (1.21, 9.0), (2.48, 8.63), (3.53, 8.02), (4.54, 7.06), (5.24, 6.0), (5.7, 4.8), (5.93, 3.6), (6.01, 2.32), (6.0, 1.2), and (5.98, 0.0). Each error value is ± 0.03 mm.

図４を参照する。長軸方向基準面Ｘ３から延びるとともに、最大面積を有する出光面１５及び台座１２と交わって形成される短軸方向頂端線１５３は、短軸方向基準面Ｙ３によって第一短軸方向頂端線部１５３ａと第二短軸方向頂端線部１５３ｂに分けられる。第一短軸方向頂端線部１５３ａの座標値について、第一短軸方向頂端線部１５３ａにおける長軸方向基準面Ｘ３との距離をｇｍｍとし、第一短軸方向頂端線部１５３ａにおける短軸方向基準面Ｙ３との距離をｈｍｍとした場合、第一短軸方向頂端線部１５３ａは、（ｇ，ｈ）：（０．０，６．５２）、（１．２，６．５５）、（２．５２，６．４）、（３．６７，５．９３）、（４．６９，５．１４）、（５．２２，４．０）、（６．０，２．７１）、（６．１５，１．３）、（６．０１，０．０）の各点からなり、その誤差値は±０．０３ｍｍである。 Please refer to FIG. The short-axis-direction apex line 153 that extends from the long-axis-direction reference plane X3 and intersects the light-emitting surface 15 and the pedestal 12 having the largest area is defined by the first short-axis-direction apex line portion 153a by the short-axis direction reference plane Y3. And the second short axis direction top end line portion 153b. Regarding the coordinate value of the first short axis direction apex line part 153a, the distance from the long axis direction reference plane X3 in the first short axis direction apex line part 153a is gmm, and the short axis direction in the first short axis direction apex line part 153a When the distance from the reference plane Y3 is hmm, the first short axis direction apex line part 153a is (g, h): (0.0, 6.52), (1.2, 6.55), ( 2.52, 6.4), (3.67, 5.93), (4.69, 5.14), (5.22, 4.0), (6.0, 2.71), ( 6.15, 1.3) and (6.01, 0.0). The error value is ± 0.03 mm.

また、短軸方向頂端線１５３の第二短軸方向頂端線部１５３ｂにおける長軸方向基準面Ｘ３との距離をｉｍｍとし、第二短軸方向頂端線部１５３ｂにおける短軸方向基準面Ｙ３との距離をｊｍｍとした場合、第二短軸方向頂端線部１５３ｂは、（ｉ，ｊ）：（０．０，５．０３）、（１．２６，４．８１）、（２．５，４．４）、（３．７４，３．７１）、（４．７６，２．６８）、（５．５４，１．４４）、（６．０１，０．０）の各点からなり、その誤差値は±０．０３ｍｍである。短軸方向頂端線１５３の曲率は、上述した各点によってなるため、出光面１５における短軸方向基準面Ｙ３右側の曲率は、短軸方向基準面Ｙ３左側の曲率よりも大きくなる。 Further, the distance between the short axis direction apex line 153 and the long axis direction reference plane X3 in the second short axis direction apex line part 153b is im, and the short axis direction reference line Y3 in the second short axis direction apex line part 153b is When the distance is jmm, the second short axis direction apex line portion 153b is (i, j): (0.0, 5.03), (1.26, 4.81), (2.5, 4 .4), (3.74, 3.71), (4.76, 2.68), (5.54, 1.44), (6.01, 0.0) The error value is ± 0.03 mm. Since the curvature of the short axis direction apex line 153 is formed by the above-described points, the curvature of the light exit surface 15 on the right side of the short axis direction reference surface Y3 is larger than the curvature of the left side of the short axis direction reference surface Y3.

本考案は、以下の効果を達成する。即ち、光学レンズ１における本体１１の表面が異なる曲率の出光面１５を備え、出光面１５における短軸方向基準面Ｙ３右側の曲率が短軸方向基準面Ｙ３左側の曲率よりも大きいことにより、ＬＥＤ２から照射された光線は入光面１４から本体１１内に入った後、出光面１５を経由することによって偏移屈折されて所定の方向及びエリアに照射されるため、ＬＥＤ２から照射された光線は左右二側方の長軸方向に延伸する照射エリアを形成し（図５参照）、且つ左右二側方の長軸方向に延伸する照射エリアが均一な照明度を備えることができる。これにより、ＬＥＤ２を光源とする照明器具の使用効果を向上させる。 The present invention achieves the following effects. That is, the surface of the main body 11 of the optical lens 1 is provided with a light exit surface 15 having different curvatures, and the curvature of the light exit surface 15 on the right side of the short-axis direction reference surface Y3 is larger than the curvature of the left side of the short-axis direction reference surface Y3. The light beam irradiated from the LED 2 enters the main body 11 from the light incident surface 14, and then is deflected and refracted by passing through the light output surface 15 to be irradiated in a predetermined direction and area. An irradiation area extending in the major axis direction on the left and right sides can be formed (see FIG. 5), and the irradiation area extending in the major axis direction on the left and right sides can have a uniform illumination. Thereby, the use effect of the lighting fixture which uses LED2 as a light source is improved.

１光学レンズ
１１本体
１２台座
１３収容部
１４入光面
１５出光面
１５１側辺線
１５１ａ第一側辺線部
１５１ｂ第二側辺線部
１５１ｃ第三側辺線部
１５１ｄ第四側辺線部
１５２長軸方向頂端線
１５２ａ第一長軸方向頂端線部
１５２ｂ第二長軸方向頂端線部
１５３短軸方向頂端線
１５３ａ第一短軸方向頂端線部
１５３ｂ第二短軸方向頂端線部
２ＬＥＤ DESCRIPTION OF SYMBOLS 1 Optical lens 11 Main body 12 Base 13 Storage part 14 Light entrance surface 15 Light exit surface 151 Side edge line 151a First side edge line part 151b Second side edge line part 151c Third side edge line part 151d Fourth side edge line part 152 Long axis direction top end line 152a First long axis direction top end line part 152b Second long axis direction top end line part 153 Short axis direction top end line part 153a First short axis direction top end line part 153b Second short axis direction top end line part 2 LED

Claims

It is a structure of an LED optical lens using an optical lens composed of a transparent main body, an accommodating portion, a light incident surface, and a light exit surface,
The housing part is provided on the base of the main body and the LED is housed therein,
The light incident surface is formed at an upper end portion of the housing portion,
The light exit surface extends upward from the base of the main body and is provided on the outer peripheral edge of the main body.
The main body is symmetric with respect to the short-axis direction reference plane Y and is provided asymmetrically with respect to the long-axis direction reference plane X
Further, the light exit surface is provided on the outermost periphery of the main body, and a side line is formed in parallel with the pedestal.
The side line includes a first side line part, a second side line part, a third side line part, and a fourth side line by a long axis direction reference plane X and a short axis direction reference plane Y. Divided into parts,
Among these, the first side line part and the fourth side line part have a symmetrical shape,
The second side line part and the third side line part have a symmetrical shape,
The coordinate value of the first side line part is a distance from the long axis direction reference plane X in the first side line part, and the distance from the short axis direction reference plane Y in the first side line part. Is the bmm, the first side line portion is (a, b): (0.0, 9.11), (1.09, 8.82), (2.14, 8.24). , (3.09, 7.51), (3.98, 6.58), (4.54, 5.69), (4.94, 4.55), (5.02, 3.42) , (4.83, 2.28), (4.4, 1.14), (4.09, 0.0),
The coordinate value of the third side line portion is such that the distance from the long axis direction reference plane X in the third side line portion is cmm, and the distance from the short axis direction reference plane Y in the third side line portion. Is set to dmm, the third side line portion is (c, d): (0.0, 9.11), (1.12, 9.17), (2.16, 9.15). (3.17, 8.91), (4.08, 8.44), (4.87, 7.8), (5.6, 6.88), (6.13, 5.8) , (6.43, 4.55), (6.52, 3.43), (6.54, 2.28), (6.55, 1.14), (6.55, 0.0) Each point
The major axis direction apex line extending from the major axis direction reference plane X2 and intersecting the pedestal is divided into a first major axis direction apex line part and a second major axis direction apex line part by the minor axis direction reference plane Y2. And
The first long axis direction apex line part and the second long axis direction apex line part have a symmetrical shape,
The coordinate value of the first major axis direction apex line part is such that the distance from the major axis direction reference plane X2 in the first major axis direction apex line part is emm, and the minor axis direction in the first major axis direction apex line part When the distance from the reference plane Y2 is fmm, the first major axis direction apex line portion is (e, f): (0.0, 9.11), (1.21, 9.0), ( 2.48, 8.63), (3.53, 8.02), (4.54, 7.06), (5.24, 6.0), (5.7, 4.8), ( 5.93, 3.6), (6.01, 2.32), (6.0, 1.2), (5.98, 0.0)
The short-axis-direction apex line that extends from the long-axis-direction reference plane X3 and intersects the light-emitting surface and the pedestal having the maximum area is formed by the short-axis-direction reference plane Y3 and the second short-axis apex line Divided into axial top line,
The coordinate value of the first short axis direction apex line part is such that the distance from the long axis direction reference plane X3 in the first short axis direction apex line part is gmm, and the short axis direction in the first short axis direction apex line part is When the distance from the reference plane Y3 is hmm, the first short axis direction apex line portion is (g, h): (0.0, 6.52), (1.2, 6.55), ( 2.52, 6.4), (3.67, 5.93), (4.69, 5.14), (5.22, 4.0), (6.0, 2.71), ( 6.15, 1.3), (6.01, 0.0)
The distance from the major axis reference surface X3 in the second minor axis direction apex line portion of the minor axis direction apex line is imm, and the distance from the minor axis direction reference surface Y3 in the second minor axis direction apex line portion is jmm. In this case, the second short axis direction apex line portion is (i, j): (0.0, 5.03), (1.26, 4.81), (2.5, 4.4). , (3.74, 3.71), (4.76, 2.68), (5.54, 1.44), (6.01, 0.0)
The structure of the LED optical lens, wherein the curvature of the light exit surface is determined by the above method.

2. The structure of an LED optical lens according to claim 1, wherein the light exit surface has a curvature on the right side of the short-axis direction reference surface Y <b> 3 larger than a curvature on the left side of the short-axis direction reference surface Y <b> 3.

The structure of the LED optical lens according to claim 1, wherein the light incident surface and the light exit surface have different curvatures.