JP6172042B2 - LED lens - Google Patents
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- JP6172042B2 JP6172042B2 JP2014102166A JP2014102166A JP6172042B2 JP 6172042 B2 JP6172042 B2 JP 6172042B2 JP 2014102166 A JP2014102166 A JP 2014102166A JP 2014102166 A JP2014102166 A JP 2014102166A JP 6172042 B2 JP6172042 B2 JP 6172042B2
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Description
本発明は、発光ダイオード素子から生じる光が入射する円柱形状入射部とこの円柱形状入射部と連続して形成されて円柱形状入射部に入射した光を被照射外方域へ出射する鐘形状出射部とを備えた発光ダイオード用レンズであって、特に、街灯や投光機としてのＬＥＤ照明装置に用いられる発光ダイオード用レンズに関するものである。 The present invention is a bell-shaped emission unit that is formed continuously with a cylindrical incident part on which light generated from a light-emitting diode element is incident and that emits light incident on the cylindrical incident part to an irradiated outer region. In particular, the present invention relates to a light emitting diode lens used in an LED lighting device as a streetlight or a projector.
従来、発光ダイオード用レンズとして、放物面である凸曲面を有する本体部と、この本体部の径方向外側へ向かって全周にわたってつば状に張り出したフランジ部と、発光ダイオード（ＬＥＤ）を収容するために本体部の底面に形成された凹部とを有したレンズが知られている（例えば、特許文献１）。 Conventionally, as a lens for a light emitting diode, a main body portion having a convex curved surface that is a paraboloid, a flange portion that protrudes in the form of a collar over the entire circumference toward the radially outer side of the main body portion, and a light emitting diode (LED) are accommodated. In order to do this, a lens having a recess formed on the bottom surface of the main body is known (for example, Patent Document 1).
しかしながら、上述した従来のレンズは、本体部の底面が真っ平らな構造であったため、ＬＥＤの配光がレンズ中心軸、すなわち、配光０度に過度に集中して視覚で眩しく感じる、所謂、グレア現象が生じてしまうという問題があった。
ここで、本明細書において、配光分布の基準となる０度は、発光ダイオード素子に対して真正面である。
However, since the conventional lens described above has a flat structure on the bottom surface of the main body, the light distribution of the LED feels dazzling visually because it is excessively concentrated on the lens central axis, i.e., 0 degrees of light distribution. There was a problem that the glare phenomenon occurred.
Here, in the present specification, 0 degrees as a reference of the light distribution is directly in front of the light emitting diode element.
そこで、本発明は、前述したような従来技術の問題を解決するものであって、すなわち、本発明の目的は、発光ダイオード素子からの光が集中することを防止して眩しく感じるグレア現象を防止するとともに、レンズ着座部分の表面から光が拡散光として漏れるロスを防止し、発光ダイオード用レンズの放熱効果を向上させる発光ダイオード用レンズを提供することである。 Therefore, the present invention solves the problems of the prior art as described above, that is, the object of the present invention is to prevent glare phenomenon which is dazzling by preventing the concentration of light from the light emitting diode element. In addition, it is an object to provide a light emitting diode lens that prevents loss of light leaking from the surface of the lens seating portion as diffused light and improves the heat dissipation effect of the light emitting diode lens.
本請求項１に係る発明は、発光ダイオード素子から生じる光が入射する円柱形状入射部と該円柱形状入射部と連続して形成されて円柱形状入射部に入射した光を被照射外方域へ出射する鐘形状出射部とを備えた発光ダイオード用レンズにおいて、前記鐘形状出射部が、前記円柱形状入射部と反対側に関数ｙ＝ｘ２÷６の曲線で定まる凸曲面を有するとともに、前記円柱形状入射部が、前記鐘形状出射部と反対側に凹曲面を有し、前記円柱形状入射部が、前記鐘形状出射部と反対側および径方向外方へ突出して発光ダイオード配線基板に着座するフランジ状のレンズ着座部分を有し、該レンズ着座部分の表面が、前記凸曲面より粗く形成され、前記レンズ着座部分が、前記鐘形状出射部と反対側へ向かって突出して発光ダイオード配線基板に着座する円環状突条を有していることにより、前述した課題を解決するものである。 According to the first aspect of the present invention, a cylindrical incident portion into which light generated from a light emitting diode element is incident and the light incident on the cylindrical incident portion formed continuously with the cylindrical incident portion are irradiated to the irradiated outer region. In a light emitting diode lens including a bell-shaped light emitting portion that emits light, the bell-shaped light emitting portion has a convex curved surface defined by a curve of a function y = x 2 ÷ 6 on the side opposite to the columnar light incident portion, and The cylindrical incident part has a concave curved surface on the opposite side to the bell-shaped emitting part, and the cylindrical incident part protrudes on the opposite side and the radially outer side of the bell-shaped emitting part and is seated on the light emitting diode wiring board A flange-shaped lens seating portion, and the surface of the lens seating portion is formed to be rougher than the convex curved surface, and the lens seating portion projects toward the opposite side of the bell-shaped emitting portion, and the light-emitting diode wiring board Arrive at The above-described problem is solved by having an annular ridge that sits .
本請求項２に係る発明は、請求項１に記載された発光ダイオード用レンズの構成に加えて、前記凹曲面の凹中心が、前記円柱形状入射部と鐘形状出射部とを積層した配列方向から視て前記凸曲面の凸中心と揃っていることにより、前述した課題を解決するものである。 In the invention according to claim 2, in addition to the configuration of the lens for light emitting diode according to claim 1, the concave center of the concave curved surface is an arrangement direction in which the cylindrical shaped incident portion and the bell shaped emitting portion are stacked. The problem described above is solved by aligning with the convex center of the convex curved surface .
本請求項２に係る発明は、請求項１に記載された発光ダイオード用レンズの構成に加えて、前記凹曲面の凹中心が、前記円柱形状入射部と鐘形状出射部とを積層した配列方向から視て前記凸曲面の凸中心と揃っていることにより、前述した課題をさらに解決するものである。 In the invention according to claim 2, in addition to the configuration of the lens for light emitting diode according to claim 1, the concave center of the concave curved surface is an arrangement direction in which the cylindrical shaped incident portion and the bell shaped emitting portion are stacked. The above-described problem is further solved by aligning with the convex center of the convex curved surface as viewed from above.
本発明の発光ダイオード用レンズは、発光ダイオード素子から生じる光が入射する円柱形状入射部とこの円柱形状入射部と連続して形成されて円柱形状入射部に入射した光を被照射外方域へ出射する鐘形状出射部とを備えていることにより、発光ダイオード素子から入射した光を出射することができるばかりでなく、以下のような特有の効果を奏することができる。 The lens for a light-emitting diode of the present invention is formed continuously with the cylindrical incident portion where light generated from the light-emitting diode element is incident and the light incident on the cylindrical incident portion to the irradiated outer region. By including the bell-shaped emission part that emits light, not only light incident from the light emitting diode element can be emitted, but also the following specific effects can be achieved.
本請求項１に係る発明の発光ダイオード用レンズによれば、鐘形状出射部が、円柱形状入射部と反対側に関数ｙ＝ｘ２÷６の曲線で定まる凸曲面を有するとともに、円柱形状入射部が、鐘形状出射部と反対側に凹曲面を有していることにより、この凹曲面で光が第１段階として拡散され、さらに、凸曲面で光が第２段階として拡散されるため、発光ダイオード素子からの光がレンズ中心軸、すなわち、配光０度に集中することを防止して眩しく感じるグレア現象を防止することができる。 According to the light-emitting diode lens of the present invention, the bell-shaped emitting portion has a convex curved surface defined by a curve of a function y = x 2 ÷ 6 on the opposite side to the cylindrical shaped incident portion, and the cylindrical shaped incident portion. Since the part has a concave curved surface on the side opposite to the bell-shaped emission part, light is diffused as a first stage on the concave curved surface, and further, light is diffused as a second stage on the convex curved surface, It is possible to prevent glare phenomenon which is dazzling by preventing the light from the light emitting diode element from being concentrated on the lens central axis, that is, the light distribution of 0 degree.
そして、円柱形状入射部が、鐘形状出射部と反対側および径方向外方へ突出して発光ダイオード配線基板に着座するフランジ状のレンズ着座部分を有しているとともに、このレンズ着座部分の表面が、凸曲面より粗く形成されていることにより、レンズ着座部分の内側で光が反射されて凸曲面へ向かうため、レンズ着座部分の表面から光が拡散光として漏れてロスになることを防止することができる。
さらに、レンズ着座部分が発光ダイオード配線基板と接触して発光ダイオード素子に対する相対的な位置関係が決まるため、発光ダイオード用レンズを発光ダイオード素子に対して位置決めすることができる。
The cylindrical incident portion has a flange-shaped lens seating portion that protrudes on the side opposite to the bell-shaped emitting portion and radially outward and seats on the light-emitting diode wiring board, and the surface of the lens seating portion is Because it is formed rougher than the convex curved surface, light is reflected inside the lens seating part and heads toward the convex curved surface, preventing light from leaking from the surface of the lens seating part as diffused light and causing loss. Can do.
Furthermore, since the lens seating portion comes into contact with the light emitting diode wiring substrate and the relative positional relationship with respect to the light emitting diode element is determined, the light emitting diode lens can be positioned with respect to the light emitting diode element.
加えて、レンズ着座部分が、鐘形状出射部と反対側へ向かって突出して発光ダイオード配線基板に着座する円環状突条を有していることにより、レンズ着座部分全体でなく一部が発光ダイオード配線基板と接触して空気と接触する面積が多くなるため、発光ダイオード用レンズの放熱効果を向上させることができる。 In addition, the lens seating portion has an annular ridge that protrudes toward the opposite side of the bell-shaped emitting portion and seats on the light-emitting diode wiring board, so that part of the lens seating portion, not the whole, is a light-emitting diode. Since the area in contact with the wiring substrate and the air increases, the heat dissipation effect of the light emitting diode lens can be improved.
本請求項２に係る発明の発光ダイオード用レンズによれば、請求項１に係る発明が奏する効果に加えて、凹曲面の凹中心が、円柱形状入射部と鐘形状出射部とを積層した配列方向から視て凸曲面の凸中心と揃っていることにより、入射と出射とに歪みが生じないため、配光を容易に調整することができる。 According to the lens for a light emitting diode of the invention according to claim 2, in addition to the effect of the invention according to claim 1 , the concave center of the concave curved surface is an array in which a cylindrical incident part and a bell-shaped emission part are stacked. By aligning with the convex center of the convex curved surface when viewed from the direction, there is no distortion in incident and outgoing, so that the light distribution can be easily adjusted.
本発明は、発光ダイオード素子から生じる光が入射する円柱形状入射部とこの円柱形状入射部と連続して形成されて円柱形状入射部に入射した光を被照射外方域へ出射する鐘形状出射部とを備えた発光ダイオード用レンズにおいて、鐘形状出射部が円柱形状入射部と反対側に関数ｙ＝ｘ２÷６の曲線で定まる凸曲面を有するとともに、円柱形状入射部が鐘形状出射部と反対側に凹曲面を有し、円柱形状入射部が鐘形状出射部と反対側および径方向外方へ突出して発光ダイオード配線基板に着座するフランジ状のレンズ着座部分を有し、このレンズ着座部分の表面が凸曲面より粗く形成され、レンズ着座部分が鐘形状出射部と反対側へ向かって突出して発光ダイオード配線基板に着座する円環状突条を有し、発光ダイオード素子からの光が集中することを防止して眩しく感じるグレア現象を防止するとともに、レンズ着座部分の表面から光が拡散光として漏れるロスを防止し、発光ダイオード用レンズの放熱効果を向上させるものであれば、その具体的な実施態様は、如何なるものであっても構わない。 The present invention is a bell-shaped emission unit that is formed continuously with a cylindrical incident part on which light generated from a light-emitting diode element is incident and that emits light incident on the cylindrical incident part to an irradiated outer region. In the lens for a light-emitting diode, the bell-shaped emission part has a convex curved surface defined by a curve of function y = x 2 ÷ 6 on the side opposite to the cylindrical incident part, and the cylindrical incident part is a bell-shaped emission part The lens-shaped incident part has a flange-shaped lens seating portion that protrudes to the opposite side of the bell-shaped emission part and radially outward and seats on the light-emitting diode wiring board. The surface of the part is formed to be rougher than the convex curved surface, the lens seating part has an annular ridge that protrudes toward the opposite side of the bell-shaped emission part and is seated on the light-emitting diode wiring board, and the light from the light-emitting diode element is concentrated The glare phenomenon that prevents glare and prevents glare, and the loss of light leaking as diffused light from the surface of the lens seating part, which improves the heat dissipation effect of the lens for light emitting diodes. Such an embodiment may be anything.
例えば、発光ダイオード用レンズの材料は、発光ダイオード素子の光を透過するものであれば、透明樹脂でもよく、透明ガラスでもよい。
また、発光ダイオード用レンズの製造方法は、樹脂を金型に流し込んで成形する方法でもよく、樹脂を切削して形成する方法でもよい。
凹曲面は、円柱形状入射部における鐘形状出射部と反対側の全面でもよく、全面のうちの一部でもよい。
また、凹曲面の凹中心が、円柱形状入射部と鐘形状出射部とを積層した配列方向から視て凸曲面の凸中心と完全に揃っていなくてもよい。
For example, the material for the light-emitting diode lens may be a transparent resin or a transparent glass as long as it transmits light from the light-emitting diode element.
Moreover, the manufacturing method of the lens for light emitting diodes may be a method of casting a resin into a mold and a method of forming by cutting the resin.
The concave curved surface may be the entire surface of the cylindrical incident portion opposite to the bell-shaped emission portion, or may be a part of the entire surface.
Further, the concave center of the concave curved surface may not be perfectly aligned with the convex center of the convex curved surface as viewed from the arrangement direction in which the cylindrical incident portion and the bell-shaped emitting portion are stacked.
以下に、本発明の実施例である発光ダイオード用レンズ１００について、図１乃至図４に基づいて説明する。
ここで、図１は、本発明の実施例である発光ダイオード用レンズ１００の斜視図であり、図２（Ａ）は、図１に示す符号２Ａから視た平面図であり、図２（Ｂ）は、図１に示す符号２Ｂから視た底面図であり、図３は、図２（Ａ）に示す符号３−３で視た断面図であり、図４は、本発明の実施例である発光ダイオード用レンズ１００を発光ダイオード配線基板ＰＢに取り付けた状態を示す断面図である。
Hereinafter, a light emitting diode lens 100 according to an embodiment of the present invention will be described with reference to FIGS.
Here, FIG. 1 is a perspective view of a light emitting diode lens 100 according to an embodiment of the present invention, and FIG. 2A is a plan view as viewed from reference numeral 2A shown in FIG. ) Is a bottom view seen from the reference numeral 2B shown in FIG. 1, FIG. 3 is a cross-sectional view seen from the reference numeral 3-3 shown in FIG. 2A, and FIG. 4 is an embodiment of the present invention. It is sectional drawing which shows the state which attached the lens 100 for a certain light emitting diode to the light emitting diode wiring board PB.
本発明の実施例である発光ダイオード用レンズ１００は、図１乃至図４に示すように、アクリル樹脂などの透明樹脂で形成された円柱形状入射部１１０と、円柱形状入射部１１０と連続して透明樹脂で一体成形された鐘形状出射部１２０とを備えている。
そして、発光ダイオード素子ＬＤから入射した光を出射するように構成されている。
このうち、円柱形状入射部１１０は、発光ダイオード素子ＬＤからの光が入射するように設けられている。
また、鐘形状出射部１２０は、円柱形状入射部１１０に入射した発光ダイオード素子ＬＤからの光を被照射外方域へ出射するように設けられている。
As shown in FIGS. 1 to 4, a light emitting diode lens 100 according to an embodiment of the present invention includes a cylindrical incident portion 110 formed of a transparent resin such as an acrylic resin, and a cylindrical incident portion 110. And a bell-shaped emitting portion 120 integrally formed of a transparent resin.
And it is comprised so that the light which injected from the light emitting diode element LD may be radiate | emitted.
Among these, the cylindrical incident part 110 is provided so that the light from the light emitting diode element LD may enter.
Moreover, the bell-shaped emission part 120 is provided so as to emit the light from the light emitting diode element LD incident on the cylindrical incident part 110 to the irradiated outer region.
円柱形状入射部１１０が、鐘形状出射部１２０と反対側および径方向外方へ突出して発光ダイオード配線基板ＰＢに着座するフランジ状のレンズ着座部分１１２を有している。
また、レンズ着座部分１１２によって円柱形状入射部１１０における鐘形状出射部１２０と反対側に空間ＳＰが形成されている。
発光ダイオード用レンズ１００は、一例として、図４に示す如く空間ＳＰ内に発光ダイオード素子ＬＤが位置するように、発光ダイオード素子ＬＤを配設した発光ダイオード配線基板ＰＢの上に、配設される。
そして、鐘形状出射部１２０および円柱形状入射部１１０が挿通するレンズ挿通穴ＡＰ１を備えた押え板ＡＰが、レンズ着座部分１１２を発光ダイオード配線基板ＰＢに対して押えて発光ダイオード用レンズ１００を固定するように構成されている。
The cylindrical incident portion 110 has a flange-shaped lens seating portion 112 that protrudes on the side opposite to the bell-shaped emitting portion 120 and radially outward and seats on the light emitting diode wiring board PB.
In addition, a space SP is formed on the side opposite to the bell-shaped emission part 120 in the cylindrical incident part 110 by the lens seating part 112.
As an example, the light emitting diode lens 100 is disposed on the light emitting diode wiring substrate PB on which the light emitting diode elements LD are disposed such that the light emitting diode elements LD are positioned in the space SP as shown in FIG. .
Then, the pressing plate AP provided with the lens insertion hole AP1 through which the bell-shaped emitting portion 120 and the cylindrical incident portion 110 are inserted presses the lens seating portion 112 against the light-emitting diode wiring board PB to fix the light-emitting diode lens 100. Is configured to do.
本実施例では、鐘形状出射部１２０が、円柱形状入射部１１０と反対側に関数ｙ＝ｘ２÷６の曲線で定まる凸曲面１２１を有している。
これにより、単なる凸平レンズと比べて、配光特性が著しく向上する。
ここで、単なる凸平レンズとは、光の入射面が真っ平らであり出射面が正円弧のドーム状凸曲面であるレンズをいう。
In this embodiment, the bell-shaped emission part 120 has a convex curved surface 121 determined by a curve of a function y = x 2 ÷ 6 on the side opposite to the cylindrical incident part 110.
Thereby, the light distribution characteristics are remarkably improved as compared with a simple convex lens.
Here, a simple convex lens means a lens in which the light incident surface is flat and the exit surface is a dome-shaped convex curved surface having a regular arc.
さらに、円柱形状入射部１１０が、鐘形状出射部１２０と反対側に凹曲面１１１を有している。
これにより、発光ダイオード素子ＬＤからの光が凹曲面１１１で第１段階として拡散され、発光ダイオード素子ＬＤからの光が凸曲面１２１で第２段階として拡散される。
さらに、レンズ着座部分１１２の表面が、凸曲面１２１より粗く形成されている。
これにより、レンズ着座部分１１２の内側で発光ダイオード素子ＬＤからの光が反射されて凸曲面１２１へ向かう。
さらに、レンズ着座部分１１２が発光ダイオード配線基板ＰＢと接触して発光ダイオード素子ＬＤに対する相対的な位置関係が決まる。
Further, the cylindrical incident part 110 has a concave curved surface 111 on the side opposite to the bell-shaped emitting part 120.
As a result, light from the light emitting diode element LD is diffused as a first stage on the concave curved surface 111, and light from the light emitting diode element LD is diffused as a second stage on the convex curved surface 121.
Further, the surface of the lens seating portion 112 is formed to be rougher than the convex curved surface 121.
Thereby, the light from the light emitting diode element LD is reflected inside the lens seating portion 112 and travels toward the convex curved surface 121.
Further, the lens seating portion 112 comes into contact with the light emitting diode wiring substrate PB, and the relative positional relationship with respect to the light emitting diode element LD is determined.
また、レンズ着座部分１１２が、鐘形状出射部１２０と反対側へ向かって突出して発光ダイオード配線基板ＰＢに着座する円環状突条１１２ａを有している。
これにより、レンズ着座部分１１２の全体でなく一部が、発光ダイオード配線基板ＰＢと接触して、発光ダイオード用レンズ１００における空気と接触する面積が多くなる。
さらに、凹曲面１１１の凹中心Ｃ１が、円柱形状入射部１１０と鐘形状出射部１２０とを積層した配列方向から視て凸曲面１２１の凸中心Ｃ２と揃っている。
これにより、入射と出射とに歪みが生じない。
Further, the lens seating portion 112 has an annular ridge 112a that protrudes toward the side opposite to the bell-shaped emitting portion 120 and seats on the light emitting diode wiring board PB.
As a result, a portion of the lens seating portion 112, not the entire portion, comes into contact with the light emitting diode wiring board PB, and the area of the light emitting diode lens 100 that comes into contact with air increases.
Further, the concave center C1 of the concave curved surface 111 is aligned with the convex center C2 of the convex curved surface 121 when viewed from the arrangement direction in which the cylindrical incident portion 110 and the bell-shaped emitting portion 120 are stacked.
As a result, there is no distortion in incidence and emission.
このようにして得られた本発明の実施例である発光ダイオード用レンズ１００は、鐘形状出射部１２０が、円柱形状入射部１１０と反対側に関数ｙ＝ｘ２÷６の曲線で定まる凸曲面１２１を有するとともに、円柱形状入射部１１０が、鐘形状出射部１２０と反対側に凹曲面１１１を有していることにより、発光ダイオード素子ＬＤからの光が配光０度に集中することを防止して眩しく感じるグレア現象を防止することができる。 The lens 100 for a light emitting diode that is an embodiment of the present invention thus obtained has a convex curved surface in which the bell-shaped emitting portion 120 is determined by a curve of a function y = x 2 ÷ 6 on the side opposite to the cylindrical incident portion 110. 121, and the cylindrical incident portion 110 has a concave curved surface 111 on the opposite side of the bell-shaped emitting portion 120, thereby preventing the light from the light emitting diode element LD from concentrating at 0 degree. The glare phenomenon that is dazzling can be prevented.
また、円柱形状入射部１１０が、鐘形状出射部１２０と反対側および径方向外方へ突出して発光ダイオード配線基板ＰＢに着座するフランジ状のレンズ着座部分１１２を有しているとともに、このレンズ着座部分１１２の表面が、凸曲面１２１より粗く形成されていることにより、レンズ着座部分１１２の表面から光が拡散光として漏れてロスになることを防止することができるとともに、発光ダイオード用レンズ１００を発光ダイオード素子ＬＤに対して位置決めすることができる。 Further, the cylindrical incident portion 110 has a flange-shaped lens seating portion 112 that protrudes on the side opposite to the bell-shaped emitting portion 120 and radially outward and seats on the light emitting diode wiring board PB. Since the surface of the portion 112 is formed to be rougher than the convex curved surface 121, light can be prevented from leaking from the surface of the lens seating portion 112 as a diffused light and lost, and the light emitting diode lens 100 can be provided. It can position with respect to the light emitting diode element LD.
さらに、レンズ着座部分１１２が、鐘形状出射部１２０と反対側へ向かって突出して発光ダイオード配線基板ＰＢに着座する円環状突条１１２ａを有していることにより、発光ダイオード用レンズ１００の放熱効果を向上させることができる。 Further, since the lens seating portion 112 has an annular protrusion 112a that protrudes toward the opposite side of the bell-shaped emitting portion 120 and is seated on the light emitting diode wiring board PB, the heat dissipation effect of the light emitting diode lens 100 is achieved. Can be improved.
また、凹曲面１１１の凹中心Ｃ１が、円柱形状入射部１１０と鐘形状出射部１２０とを積層した配列方向から視て凸曲面１２１の凸中心Ｃ２と揃っていることにより、配光を容易に調整することができるなど、その効果は甚大である。 Further, the concave center C1 of the concave curved surface 111 is aligned with the convex center C2 of the convex curved surface 121 when viewed from the arrangement direction in which the cylindrical incident portion 110 and the bell-shaped emitting portion 120 are stacked, thereby facilitating light distribution. The effect is enormous, as it can be adjusted.
１００ ・・・ 発光ダイオード用レンズ
１１０ ・・・ 円柱形状入射部
１１１ ・・・ 凹曲面
１１２ ・・・ レンズ着座部分
１１２ａ・・・ 円環状突条
１２０ ・・・ 鐘形状出射部
１２１ ・・・ 凸曲面
ＡＰ ・・・ 押え板
ＡＰ１ ・・・ レンズ挿通穴
Ｃ１ ・・・ （凹曲面の）凹中心
Ｃ２ ・・・ （凸曲面の）凸中心
ＬＤ ・・・ 発光ダイオード素子
ＰＢ ・・・ 発光ダイオード配線基板
ＳＰ ・・・ 空間
DESCRIPTION OF SYMBOLS 100 ... Light emitting diode lens 110 ... Cylindrical incident part 111 ... Concave surface 112 ... Lens seating part 112a ... Toroidal ridge 120 ... Bell-shaped emission part 121 ... Convex Curved surface AP ... Presser plate AP1 ... Lens insertion hole C1 ... Concave center C2 (concave surface) ... Convex center LD (convex surface) ... Light-emitting diode element PB ... Light-emitting diode wiring Substrate SP ... Space
Claims (2)
前記鐘形状出射部が、前記円柱形状入射部と反対側に関数ｙ＝ｘ２÷６の曲線で定まる凸曲面を有するとともに、
前記円柱形状入射部が、前記鐘形状出射部と反対側に凹曲面を有し、
前記円柱形状入射部が、前記鐘形状出射部と反対側および径方向外方へ突出して発光ダイオード配線基板に着座するフランジ状のレンズ着座部分を有し、
該レンズ着座部分の表面が、前記凸曲面より粗く形成され、
前記レンズ着座部分が、前記鐘形状出射部と反対側へ向かって突出して発光ダイオード配線基板に着座する円環状突条を有していることを特徴とする発光ダイオード用レンズ。 A cylindrical shaped incident portion for receiving light generated from the light emitting diode element, and a bell shaped emitting portion that is formed continuously with the cylindrical shaped incident portion and emits the light incident on the cylindrical incident portion to the irradiated outer region. In the light emitting diode lens,
The bell-shaped emission part has a convex curved surface determined by a curve of a function y = x 2 ÷ 6 on the opposite side to the cylindrical shape incident part,
The cylindrical incident part has a concave curved surface on the side opposite to the bell-shaped emission part,
The cylindrical incident portion has a flange-shaped lens seating portion that protrudes to the opposite side of the bell-shaped emission portion and radially outward to be seated on the light emitting diode wiring board,
The surface of the lens seating portion is formed rougher than the convex curved surface,
A lens for a light emitting diode, wherein the lens seating portion has an annular ridge that protrudes toward the opposite side of the bell-shaped emitting portion and is seated on a light emitting diode wiring board .
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| JP5382304B2 (en) * | 2008-11-20 | 2014-01-08 | 伸和エクセル株式会社 | Lighting device |
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