JPH0794785A - Light-emitting diode - Google Patents
Light-emitting diodeInfo
- Publication number
- JPH0794785A JPH0794785A JP25750393A JP25750393A JPH0794785A JP H0794785 A JPH0794785 A JP H0794785A JP 25750393 A JP25750393 A JP 25750393A JP 25750393 A JP25750393 A JP 25750393A JP H0794785 A JPH0794785 A JP H0794785A
- Authority
- JP
- Japan
- Prior art keywords
- light emitting
- light
- spherical portion
- emitting element
- spherical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 claims abstract description 35
- 239000011347 resin Substances 0.000 abstract description 7
- 229920005989 resin Polymers 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 3
- 239000000758 substrate Substances 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 abstract 1
- 101150037531 sinR gene Proteins 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/4805—Shape
- H01L2224/4809—Loop shape
- H01L2224/48091—Arched
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/481—Disposition
- H01L2224/48151—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
- H01L2224/48221—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
- H01L2224/48245—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic
- H01L2224/48247—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic connecting the wire to a bond pad of the item
Landscapes
- Led Device Packages (AREA)
- Led Devices (AREA)
Abstract
(57)【要約】
【目的】 発光素子をリ−ドフレ−ム、ステム基板上な
どにマウントすると共に、ワイヤ−ボンディングし、こ
れらを透明樹脂によってモ−ルドした発光ダイオ−ドの
照度を大幅に向上させることを目的とする。
【構成】 半球以上の球面とした球形部５４ａを有する
光学部材５４を透明樹脂材で形成し、リ−ドフレ−ム５
１、５２にマウントすると共にワイヤ−５３でボンディ
ングした発光素子５０を、球形部５４ａの半径ｒ及び屈
折率ｎに対し球形部５４ａの中心からｒ／ｎ離すと共に
光軸と球形部５４ａとの交点までの距離をｒ（１／ｎ＋
１）とし、かつ、上記光軸と球形部５４ａとの交点が球
形部５４ａの頂点となるようにして上記光学部材５４で
モ−ルドし、さらに、発光素子５０から放射される側面
方向の光の入射領域まで上記光学部材５４を球形部５４
ａによって形成してある。
(57) [Abstract] [Purpose] Mounting a light emitting element on a lead frame, a stem substrate, etc., wire bonding, and molding these with a transparent resin greatly reduces the illuminance of the light emitting diode. The purpose is to improve. An optical member 54 having a spherical portion 54a having a hemispherical or more spherical surface is formed of a transparent resin material, and the lead frame 5 is provided.
The light-emitting element 50 mounted on the Nos. 1 and 52 and bonded by the wire-53 is separated from the center of the spherical portion 54a by r / n with respect to the radius r and the refractive index n of the spherical portion 54a, and at the intersection of the optical axis and the spherical portion 54a. The distance to r (1 / n +
1), and the optical member 54 is molded so that the intersection of the optical axis and the spherical portion 54a becomes the apex of the spherical portion 54a. The optical member 54 to the incident area of the spherical portion 54
It is formed by a.
Description
【０００１】[0001]
【産業上の利用分野】この発明は、信号灯、表示灯、光
通信装置及び各種センサ等の光源として使用される可視
光または赤外線を放射する発光ダイオ−ドに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light emitting diode which emits visible light or infrared light and is used as a light source for signal lights, indicators, optical communication devices and various sensors.
【０００２】[0002]
【従来の技術】従来におけるこの種の発光ダイオ−ドの
一例を図４に示す。１、２は共にリ−ドフレ−ムで、リ
−ドフレ−ム１の曲折部先端にはＧａＰ系又はＧａＡｓ
Ｐ系などの発光素子３が装着されている。また、リ−ド
フレ−ム２はワイヤ−４によって発光素子３の上面電極
に電気接続されている。５は上記のように接続された両
リ−ドフレ−ム１、２の先端部分と、発光素子３と、ワ
イヤ−４とを包囲する光透過性の樹脂材で形成した光学
部材で、前面側にいくほど細くなる形状となっている。
図５は円柱形の前方を球面状とした形状の光学部材６を
備えた発光ダイオ−ドの従来例を示す。2. Description of the Related Art An example of a conventional light emitting diode of this type is shown in FIG. The lead frames 1 and 2 are both lead frames, and the bent portion of the lead frame 1 is made of GaP or GaAs.
A light emitting element 3 such as a P system is mounted. Further, the lead frame 2 is electrically connected to the upper surface electrode of the light emitting element 3 by the wire-4. Reference numeral 5 denotes an optical member formed of a light-transmissive resin material that surrounds the tip portions of the two lead frames 1 and 2 connected as described above, the light emitting element 3, and the wire-4. The shape becomes thinner as it gets closer.
FIG. 5 shows a conventional example of a light emitting diode provided with an optical member 6 having a cylindrical front surface having a spherical shape.
【０００３】[0003]
【発明が解決しようとする課題】上記した従来の発光ダ
イオ−ドは、発光素子３から放射される光のうち発光素
子３の前面部から放射される光と、発光素子３の側面部
から放射される光の一部とが各光学部材５、６によって
前方に投光され発光ダイオ−ドの有効光線となる。The conventional light emitting diode described above emits the light emitted from the front surface of the light emitting element 3 among the light emitted from the light emitting element 3 and the side surface of the light emitting element 3. A part of the generated light is projected forward by the optical members 5 and 6 and becomes an effective light beam of the light emitting diode.
【０００４】したがって、図４に示す発光ダイオ−ド
は、発光素子３の側面部から出る光Ａ、Ｂが有効光線と
ならず、また、図５に示す発光ダイオ−ドは発光素子３
の側面部から出る光Ｃが有効光線とならない。つまり、
光Ａ、Ｃは各光学部材５、６の周面で屈折しないでその
ままで放射し、また、光Ｂは後方向きに屈折するため、
このような光Ａ、Ｂ、Ｃが発光ダイオ−ドの照度アップ
に寄与しないことになる。Therefore, in the light emitting diode shown in FIG. 4, the light A, B emitted from the side surface of the light emitting element 3 is not an effective light beam, and the light emitting diode shown in FIG.
The light C emitted from the side surface of the is not an effective ray. That is,
The lights A and C radiate as they are without being refracted on the peripheral surfaces of the optical members 5 and 6, and the light B refracts backward.
Such light A, B, C does not contribute to increase the illuminance of the light emitting diode.
【０００５】上記した実情にかんがみ、本発明は、発光
素子の前面部と側面部から放射される光のほぼ全てを有
効光線として利用でき、大幅な照度アップを図ることの
できるこの種の発光ダイオ−ドを開発することを目的と
する。In view of the above situation, the present invention can use almost all of the light emitted from the front surface and the side surface of the light emitting element as effective light rays, and can significantly increase the illuminance. -To develop the code.
【０００６】[0006]
【課題を解決するための手段】上記した目的を達成する
ため、本発明では、半球以上の球面とした球形部を有す
る透明または半透明の光学部材を設け、上記球形部の半
径ｒ及び屈折率ｎに対し球形部の中心からｒ／ｎ離な
し、球形部の表面と光軸との交点までの距離をｒ（１／
ｎ＋１）とした上記光学部材内の位置に光学素子を設け
て構成したことを特徴とする発光ダイオ−ドを提案す
る。In order to achieve the above object, the present invention provides a transparent or semitransparent optical member having a spherical portion having a spherical surface of a hemisphere or more, the radius r and the refractive index of the spherical portion. No distance r / n from the center of the spherical part for n, and the distance from the surface of the spherical part to the intersection of the optical axis is r (1 /
There is proposed a light emitting diode characterized in that an optical element is provided at a position of (n + 1) in the optical member.
【０００７】[0007]
【作用】この発明の発光ダイオ−ドは、屈折率ｎを有す
る光学部材によって半径ｒの球形状に発光素子をモ−ル
ドし、また、発光素子は球形部の中心からｒ／ｎ離なす
と共に、光軸が上記球形部の中心と球形部の頂点を通る
ようにしてある。また、光学部材の球形部は半球以上の
球面をもっており、発光素子の正面と側面から放射され
る光の入射領域を形成している。In the light emitting diode of the present invention, the light emitting element is molded into a spherical shape having the radius r by the optical member having the refractive index n, and the light emitting element is separated from the center of the spherical portion by r / n. The optical axis passes through the center of the spherical portion and the apex of the spherical portion. Further, the spherical portion of the optical member has a hemispherical or more spherical surface, and forms an incident area of light emitted from the front and side surfaces of the light emitting element.
【０００８】したがって、発光素子の前面から放射され
る光は球形部によって屈折し、発光ダイオ−ドの前方に
投光される。また、発光素子の側面から放射される光
は、球形部との間で臨界角をなす光を除きこの球形部に
よって屈折して発光ダイオ−ドの前方に投光される。そ
して、上記臨界角の光は球形部で全反射して発光ダイオ
−ドの前方に投光される。Therefore, the light emitted from the front surface of the light emitting element is refracted by the spherical portion and is projected in front of the light emitting diode. The light emitted from the side surface of the light emitting element is refracted by the spherical portion except the light forming a critical angle with the spherical portion and is projected in front of the light emitting diode. Then, the light having the critical angle is totally reflected by the spherical portion and is projected in front of the light emitting diode.
【０００９】このように、発光素子から放射される光の
ほぼ全てが発光ダイオ−ドの前方に投光されるので、発
光ダイオ−ドの照度が大きく向上する。As described above, since almost all the light emitted from the light emitting element is projected in front of the light emitting diode, the illuminance of the light emitting diode is greatly improved.
【００１０】[0010]
【実施例】次に、本発明の実施例について図面に沿って
説明する。図１は本発明の発光ダイオ−ドの簡略的な断
面図であり、ＧａＰ系またはＧａＡｓＰ系などの発光素
子５０は従来例同様にＬ字形に折曲した一方のリ−ドフ
レ−ム５１の頂部にマウントされ、他方のリ−ドフレ−
ム５２との間においてワイヤ−５３がボンディングされ
電気的に接続されている。Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a schematic cross-sectional view of a light emitting diode according to the present invention. A light emitting element 50 such as a GaP type or GaAsP type is formed on the top of one lead frame 51 which is bent into an L shape like the conventional example. Mounted on the other side of the lead frame
A wire 53 is bonded and electrically connected to the frame 52.
【００１１】また、発光素子５０、各リ−ドフレ−ム５
１、５２の上端部分及びワイヤ−５３は透明樹脂材で形
成した光学部材５４でモ−ルドされている。Further, the light emitting element 50 and each lead frame 5
The upper end portions of the wires 1 and 52 and the wire 53 are molded by an optical member 54 made of a transparent resin material.
【００１２】この光学部材５４は、半球以上の球面を有
する球形部５４ａを備え、この球形部５４ａの端部には
支持部５４ｂが一体形成されている。球形部５４ａは、
Ｏ点を球心とした半径ｒの球状体で、Ｔ点を頂点とし、
屈折率がｎとなっている。The optical member 54 is provided with a spherical portion 54a having a spherical surface of a hemisphere or more, and a support portion 54b is integrally formed at an end of the spherical portion 54a. The spherical portion 54a is
A spherical body of radius r with the O point as the spherical center, and the T point as the apex,
The refractive index is n.
【００１３】このような光学部材５４に内包された光学
素子５０は次のようにして配置されている。光学素子５
０の光軸Ｘが球形部５４ａの球心Ｏと頂点Ｔを通るよう
にし、球形部５４ａの球心Ｏから支持部５４ｂ方向に距
離ｒ／ｎだけ離して発光素子５０を配置する。したがっ
て、発光素子５０から球形部５４ａの頂点Ｔまでの距離
はｒ（１／ｎ＋１）となる。The optical element 50 contained in such an optical member 54 is arranged as follows. Optical element 5
The optical axis X of 0 passes through the spherical center O of the spherical portion 54a and the apex T, and the light emitting element 50 is arranged at a distance r / n from the spherical center O of the spherical portion 54a toward the support portion 54b. Therefore, the distance from the light emitting element 50 to the apex T of the spherical portion 54a is r (1 / n + 1).
【００１４】また、上記球形部５４ａは、このように配
置した発光素子５０から放射される側面方向の光が入射
する領域まで球面形成されている。つまり、球形部５４
ａは、球形の立体角をωとしたとき、発光素子５０より
ｒ（１／ｎ＋１）の位置を頂点とするω＞２πである立
体角ωをもつようになっている。Further, the spherical portion 54a is formed into a spherical surface up to the region where the light emitted from the light emitting element 50 arranged in this way is incident in the lateral direction. That is, the spherical portion 54
When a has a spherical solid angle of ω, a has a solid angle ω of ω> 2π with an apex at the position of r (1 / n + 1) from the light emitting element 50.
【００１５】この発光ダイオ−ドは、発光素子５０が図
２に示す発光指向特性を示しており、この図よりわかる
如く発光素子５０は光軸方向Ｘだけでなく、光軸Ｘと直
交する方向、つまりＹ軸方向にも多くの光量を発光して
いる。In this light emitting diode, the light emitting element 50 exhibits the light emission directivity characteristic shown in FIG. 2. As can be seen from this figure, the light emitting element 50 is not only in the optical axis direction X but also in the direction orthogonal to the optical axis X. That is, a large amount of light is emitted also in the Y-axis direction.
【００１６】発光素子５０からＹ軸方向に放射される
光、つまり、発光素子５０の側面部５０ａから放射され
る光５５、５６を一例にとると、これら光５５、５６は
球形部５４ａで屈折して光５５′、５６′となって放射
していく。なお、この光は球形部５４ａに対し臨界角で
あり、実際には存在しない。これらの屈折光線５５′、
５６′は延長の交りによって生ずる点、つまり、虚光源
５７から発した光線のように進んでいく。同様に、発光
素子５０の前面部５０ｂから放射される光５８のその屈
折光線５８′も虚光源５７から発した光線のように進ん
でいく。Taking the light emitted from the light emitting element 50 in the Y-axis direction, that is, the light 55 and 56 emitted from the side surface portion 50a of the light emitting element 50 as an example, these light 55 and 56 are refracted by the spherical portion 54a. Then, light 55 'and 56' are emitted. It should be noted that this light has a critical angle with respect to the spherical portion 54a and does not actually exist. These refracted rays 55 ',
56 'advances like a point generated by the intersection of extensions, that is, like a ray emitted from the imaginary light source 57. Similarly, the refracted light ray 58 ′ of the light 58 emitted from the front surface portion 50 b of the light emitting element 50 travels like the light ray emitted from the imaginary light source 57.
【００１７】この関係を図３をもって説明すると、光源
としての発光素子５０をＬ、虚光源５７をＬ′とし、辺
Ｌ′Ｏをｘとすると、光５５の球形部５４ａにおける屈
折点Ｐと球心Ｏを結ぶ仮想的直線辺ＯＯ′は点Ｐにおけ
る法線であるから、∠ＬＰＯは光５５の入射角θとな
り、∠Ｏ′ＰＬ″は屈折角θ′となる。また、∠Ｏ′Ｐ
Ｌ″＝∠Ｌ′ＰＯであるから、∠Ｌ′ＰＯ＝θ′とな
る。This relationship will be described with reference to FIG. 3. When the light emitting element 50 as a light source is L, the imaginary light source 57 is L ', and the side L'O is x, the point of refraction P of the light 55 at the spherical portion 54a and the sphere. Since the virtual straight line OO ′ connecting the centers O is the normal line at the point P, ∠LPO becomes the incident angle θ of the light 55, and ∠O′PL ″ becomes the refraction angle θ ′. Also, ∠O′P.
Since L ″ = ∠L′PO, ∠L′PO = θ ′.
【００１８】ここで、辺ＬＯ＝ｒ／ｎであるから、∠Ｐ
ＬＯ＝Ｒ、∠ＰＬ′Ｏ＝Ｒ′とすると、正弦法則によ
り、△ＬＰＯにおいて、ｓｉｎθ／（ｒ／ｎ）＝ｓｉｎ
Ｒ／ｒ、これより、 ｎｓｉｎθ＝ｓｉｎＲ ・・・・・・・・・（１） △Ｌ′ＰＯにおいて、ｓｉｎθ′／ｘ＝ｓｉｎＲ′／
ｒ、これより、 ｒｓｉｎθ′＝ｘｓｉｎＲ′・・・・・・（２） となる。Here, since the side LO = r / n, ∠P
If LO = R and ∠PL′O = R ′, then according to the sine law, in ΔLPO, sin θ / (r / n) = sin
R / r, from which nsin θ = sinR (1) In ΔL′PO, sin θ ′ / x = sinR ′ /
r, from which rsin θ ′ = xsinR ′ ... (2)
【００１９】ここで、球形部５４ａの外側は空気である
から絶対屈折率１とみなし、入射角θと反射角θ′の間
には、屈折の法則により、 ｎｓｉｎθ＝ｓｉｎθ′ ・・・・・・・（３） の関係が成立する。（１）式及び（３）式よりｓｉｎＲ
＝ｓｉｎθ′となり、 Ｒ＝θ′ ・・・・・・・・・・・（４） となる。Here, since the outside of the spherical portion 54a is air, it is assumed that the absolute refractive index is 1, and between the incident angle θ and the reflection angle θ ′, according to the law of refraction, n sin θ = sin θ ′.・ The relationship of (3) is established. From equations (1) and (3), sinR
= Sin θ ′, and R = θ ′ (4).
【００２０】また、△ＬＰＯと△Ｌ′ＰＯにおいて、θ
＋Ｒ＝θ′＋Ｒ′であるから、（４）式を代入すると、 θ＝Ｒ′ ・・・・・・・・・・・（５） を得る。そして、（２）式に（５）式を代入すると、 ｒｓｉｎθ′＝ｘｓｉｎθ ・・・・・・・・（６） となり、この（６）式と（３）式より、ｘ＝ｎｒが得ら
れる。すなわち、虚光源Ｌ′が球心Ｏからｎｒの距離に
あるとき、球形部５４ａでの屈折光は虚光源Ｌ′から発
した光線のように進む。Further, in ΔLPO and ΔL'PO, θ
Since + R = θ ′ + R ′, by substituting the equation (4), θ = R ′ ... (5) is obtained. Then, by substituting the equation (5) into the equation (2), rsin θ ′ = x sin θ (6) is obtained, and x = nr is obtained from the equations (6) and (3). . That is, when the imaginary light source L'is at a distance of nr from the spherical center O, the refracted light at the spherical portion 54a travels like a light beam emitted from the imaginary light source L '.
【００２１】一方、入射角θが大きくなれば屈折角θ′
も大きくなるが、屈折角θ′はπ／２よりは大きくなり
得ず、このため屈折角θ′をπ／２とすると入射角θは
臨界角となり、屈折現象は全反射に変わる。これは図３
におけるθ′＝π／２の場合、（４）式よりθ′＝Ｒで
あるから、Ｒ＝π／２となり、光５５は球形部５４ａで
全反射する。したがって、空気中への光の放射はＲ＜π
／２の条件が成り立つ。なお、Ｒは発光素子５０から出
る光の方向角である。図１における光５６も同様であ
る。On the other hand, if the incident angle θ increases, the refraction angle θ '
However, the refraction angle θ ′ cannot be larger than π / 2. Therefore, when the refraction angle θ ′ is π / 2, the incident angle θ becomes a critical angle and the refraction phenomenon changes to total reflection. This is Figure 3
In the case of θ ′ = π / 2 in the above, since θ ′ = R from the equation (4), R = π / 2, and the light 55 is totally reflected by the spherical portion 54a. Therefore, the emission of light into the air is R <π
The condition of / 2 is satisfied. Note that R is the direction angle of the light emitted from the light emitting element 50. The same applies to the light 56 in FIG.
【００２２】この結果、発光素子５０の側面部５０ａと
前面部５０ｂとから放射される光のほぼ全てを光学部材
５４の球形部５４ａによって前方に放射することができ
る。As a result, almost all the light emitted from the side surface portion 50a and the front surface portion 50b of the light emitting element 50 can be emitted forward by the spherical portion 54a of the optical member 54.
【００２３】上記実施例においては、発光素子５０をリ
−ドフレ−ムに取付けた場合について述べたが、ステム
又は基板上にマウントした場合も同様に構成することが
できる。また、光学部材５４全体を透明樹脂によって形
成したが、半透明樹脂で形成したり、球形部５４ａのみ
を透明樹脂によって形成するようなことは任意である。In the above embodiment, the case where the light emitting element 50 is attached to the lead frame has been described, but the case where the light emitting element 50 is mounted on the stem or the substrate can be similarly configured. Although the entire optical member 54 is made of transparent resin, it may be made of semitransparent resin or only the spherical portion 54a may be made of transparent resin.
【００２４】[0024]
【発明の効果】上記した通り、本発明に係る発光ダイオ
−ドは、発光素子から放射される光のほぼ全てを光学部
材の球形部で前方へ投光することができるので、発光ダ
イオ−ドの輝度を大幅にアップさせることができる。As described above, in the light emitting diode according to the present invention, almost all of the light emitted from the light emitting element can be projected forward by the spherical portion of the optical member. The brightness of can be greatly increased.
【００２５】また、球形部によって屈折した光は発光素
子の虚光源からの光とみなすことができるので、他の光
学素子を組合せて用いる場合、光学素子の配置が容易と
なる利点を有している。Further, since the light refracted by the spherical portion can be regarded as the light from the imaginary light source of the light emitting element, there is an advantage that the arrangement of the optical elements becomes easy when other optical elements are used in combination. There is.
【図１】本発明に係る発光ダイオ−ドの簡略的な断面図
である。FIG. 1 is a schematic sectional view of a light emitting diode according to the present invention.
【図２】この発光ダイオ−ドに備えた発光素子の発光指
向特性を示す図である。FIG. 2 is a diagram showing a light emitting directivity characteristic of a light emitting element provided in this light emitting diode.
【図３】本発明の発光ダイオ−ドの原理説明図である。FIG. 3 is a diagram illustrating the principle of a light emitting diode according to the present invention.
【図４】従来例を示し、発光ダイオ−ドの簡略的な断面
図である。FIG. 4 is a schematic cross-sectional view of a light emitting diode showing a conventional example.
【図５】従来例を示し、他の発光ダイオ−ドの簡略的な
断面図である。FIG. 5 is a schematic cross-sectional view of another light emitting diode showing a conventional example.
５０ 発光素子 ５１、５２ リ−ドフレ−ム ５３ ワイヤ− ５４ 光学部材 ５４ａ 球形部 50 light emitting element 51, 52 lead frame 53 wire 54 optical member 54a spherical portion
Claims (1)
明または半透明の光学部材を設け、上記球形部の半径ｒ
及び屈折率ｎに対し球形部の中心からｒ／ｎ離なし、球
形部の表面と光軸との交点までの距離をｒ（１／ｎ＋
１）とした上記光学部材内の位置に光学素子を設けて構
成したことを特徴とする発光ダイオ−ド。1. A transparent or semi-transparent optical member having a spherical portion having a hemispherical or more spherical surface is provided, and a radius r of the spherical portion.
And r / n from the center of the spherical portion for the refractive index n, and the distance to the intersection of the spherical surface and the optical axis is r (1 / n +
A light emitting diode characterized in that an optical element is provided at a position in the optical member described in 1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25750393A JPH0794785A (en) | 1993-09-22 | 1993-09-22 | Light-emitting diode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25750393A JPH0794785A (en) | 1993-09-22 | 1993-09-22 | Light-emitting diode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0794785A true JPH0794785A (en) | 1995-04-07 |
Family
ID=17307204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25750393A Pending JPH0794785A (en) | 1993-09-22 | 1993-09-22 | Light-emitting diode |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0794785A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008019041A3 (en) * | 2006-08-03 | 2008-10-30 | Intematix Corp | Led lighting arrangement including light emitting phosphor |
| CN101513120A (en) * | 2006-08-03 | 2009-08-19 | 英特曼帝克司公司 | LED lighting arrangement including light emitting phosphor |
| US8174036B2 (en) * | 2003-12-30 | 2012-05-08 | Osram Opto Semiconductors Gmbh | Lighting device |
| RU2506663C1 (en) * | 2012-10-10 | 2014-02-10 | Шепеленко Виталий Борисович | Light-emitting diode with optical element |
| JP2015015281A (en) * | 2013-07-03 | 2015-01-22 | ウシオ電機株式会社 | Light emitting device |
| JP2015079854A (en) * | 2013-10-17 | 2015-04-23 | 日亜化学工業株式会社 | Light emitting device |
| JP2015195377A (en) * | 2014-03-28 | 2015-11-05 | 株式会社朝日ラバー | light distribution lens |
| US10557594B2 (en) | 2012-12-28 | 2020-02-11 | Intematix Corporation | Solid-state lamps utilizing photoluminescence wavelength conversion components |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5586175A (en) * | 1978-12-22 | 1980-06-28 | Canon Inc | Photodiode |
| JPH0397277A (en) * | 1989-08-29 | 1991-04-23 | Hewlett Packard Co <Hp> | lamp |
-
1993
- 1993-09-22 JP JP25750393A patent/JPH0794785A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5586175A (en) * | 1978-12-22 | 1980-06-28 | Canon Inc | Photodiode |
| JPH0397277A (en) * | 1989-08-29 | 1991-04-23 | Hewlett Packard Co <Hp> | lamp |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8174036B2 (en) * | 2003-12-30 | 2012-05-08 | Osram Opto Semiconductors Gmbh | Lighting device |
| WO2008019041A3 (en) * | 2006-08-03 | 2008-10-30 | Intematix Corp | Led lighting arrangement including light emitting phosphor |
| CN101513120A (en) * | 2006-08-03 | 2009-08-19 | 英特曼帝克司公司 | LED lighting arrangement including light emitting phosphor |
| US8067884B2 (en) | 2006-08-03 | 2011-11-29 | Intematrix Corporation | LED lighting arrangement including a substantially spherical optical component having a surface partially coated with a light emitting phosphor |
| RU2506663C1 (en) * | 2012-10-10 | 2014-02-10 | Шепеленко Виталий Борисович | Light-emitting diode with optical element |
| US10557594B2 (en) | 2012-12-28 | 2020-02-11 | Intematix Corporation | Solid-state lamps utilizing photoluminescence wavelength conversion components |
| JP2015015281A (en) * | 2013-07-03 | 2015-01-22 | ウシオ電機株式会社 | Light emitting device |
| JP2015079854A (en) * | 2013-10-17 | 2015-04-23 | 日亜化学工業株式会社 | Light emitting device |
| JP2015195377A (en) * | 2014-03-28 | 2015-11-05 | 株式会社朝日ラバー | light distribution lens |
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