JPH06350140A - Light emitting diode - Google Patents

Light emitting diode

Info

Publication number
JPH06350140A
JPH06350140A JP5160311A JP16031193A JPH06350140A JP H06350140 A JPH06350140 A JP H06350140A JP 5160311 A JP5160311 A JP 5160311A JP 16031193 A JP16031193 A JP 16031193A JP H06350140 A JPH06350140 A JP H06350140A
Authority
JP
Japan
Prior art keywords
light emitting
emitting diode
light
reflecting surface
emitting element
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
Application number
JP5160311A
Other languages
Japanese (ja)
Inventor
Yoshinobu Suehiro
好伸 末広
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Iwasaki Denki KK
Original Assignee
Iwasaki Denki KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Iwasaki Denki KK filed Critical Iwasaki Denki KK
Priority to JP5160311A priority Critical patent/JPH06350140A/en
Publication of JPH06350140A publication Critical patent/JPH06350140A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/52—Encapsulations
    • H01L33/54—Encapsulations having a particular shape
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/58—Optical field-shaping elements
    • H01L33/60—Reflective elements

Abstract

PURPOSE:To provide a light emitting diode that allows the light emitted from a luminous element to externally radiate with a small reflecting surface. CONSTITUTION:This light emitting diode consists of a luminous element 12; a concave reflecting surface 18 that reflects the light emitted from the luminous element 12; and a radiating surface 22 through which the light reflected by the concave reflecting surface 18 is externally radiated. A projection 26 is formed on the concave reflecting surface 18 opposite the luminous plane of the luminous element 12. This allows light reflected by the concave reflecting surface 18 to be externally radiated without being interrupted by the luminous element.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、発光素子が発した光を
凹面状反射面により反射した後に外部に放射する反射型
の発光ダイオード（以下、単に発光ダイオードとも称す
る）に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reflection type light emitting diode (hereinafter, also simply referred to as a light emitting diode) which emits light emitted from a light emitting element to the outside after being reflected by a concave reflecting surface.

【０００２】[0002]

【従来の技術】従来の発光ダイオードについて図５及び
図６を参照して説明する。図５は、従来の発光ダイオー
ドの概略正面図である。図６は、図５に示す発光ダイオ
ードのＡ−Ａ矢視方向概略断面図である。2. Description of the Related Art A conventional light emitting diode will be described with reference to FIGS. FIG. 5 is a schematic front view of a conventional light emitting diode. FIG. 6 is a schematic sectional view of the light emitting diode shown in FIG.

【０００３】従来の発光ダイオード７０は、発光素子７
２と、発光素子７２に電力を供給するリードフレーム７
４ａ，７４ｂと、光透過性材料７６と、凹面状反射面７
８と、放射面８２とを有する。発光素子７２は、リード
フレーム７４ａの先端部に配置され、ワイヤ８４により
リードフレーム７４ｂと電気的に接続されている。発光
素子７２と、リードフレーム７４ａ，７４ｂの先端部
と、ワイヤ８４とは光透過性材料７６により一体的に封
止されている。凹面状反射面７８は、光透過性材料７６
の表面を鍍金や金属蒸着等により鏡面加工することによ
り形成され、発光素子７２の発光面と対向する側に配置
される。放射面８２は、発光素子７２の背面側に平面状
に形成される。The conventional light emitting diode 70 includes a light emitting element 7
2 and a lead frame 7 for supplying electric power to the light emitting element 72
4a, 74b, the light transmissive material 76, and the concave reflecting surface 7
8 and a radiation surface 82. The light emitting element 72 is arranged at the tip of the lead frame 74a, and is electrically connected to the lead frame 74b by a wire 84. The light emitting element 72, the tip portions of the lead frames 74a and 74b, and the wire 84 are integrally sealed by the light transmissive material 76. The concave reflecting surface 78 is made of the light transmissive material 76.
Of the light emitting element 72 is formed by mirror-finishing the surface of the light emitting element 72 by plating, metal deposition, or the like, and is disposed on the side facing the light emitting surface of the light emitting element 72. The radiation surface 82 is formed in a flat shape on the back surface side of the light emitting element 72.

【０００４】上記構成による発光ダイオード７０は、発
光素子７２が発した光を凹面状反射面７８により反射し
た後に放射面８２から外部に放射するものであり、発光
素子７２が発する光の略全光束を前方に放射することが
でき、また、凹面状反射面の代わりにレンズを用いて集
光するいわゆるレンズ型の発光ダイオードに比べて薄型
にすることができる。The light emitting diode 70 having the above-mentioned structure emits the light emitted from the light emitting element 72 to the outside from the emission surface 82 after being reflected by the concave reflecting surface 78, and substantially the entire luminous flux of the light emitted from the light emitting element 72. Can be emitted forward and can be made thinner than a so-called lens type light emitting diode in which a lens is used instead of the concave reflecting surface to collect light.

【０００５】[0005]

【発明が解決しようとする課題】しかしながら、従来の
反射型の発光ダイオードでは、凹面状反射面が小さい場
合、例えば凹面状反射面の直径がφ２ｍｍ以下である場
合には、凹面状反射面により反射された光を発光素子が
遮る割合が大きくなり、この結果、光の放射効率が悪く
なるという問題がある。However, in the conventional reflection type light emitting diode, when the concave reflection surface is small, for example, when the diameter of the concave reflection surface is φ2 mm or less, the reflection is caused by the concave reflection surface. There is a problem in that the ratio of the emitted light blocked by the light emitting element increases, and as a result, the light emission efficiency deteriorates.

【０００６】本発明は上記事情に基づいてなされたもの
であり、凹面状反射面が小さくても発光素子が発した光
を効率よく外部に放射することのできる発光ダイオード
を提供することを目的とするものである。The present invention has been made under the above circumstances, and an object thereof is to provide a light emitting diode capable of efficiently radiating the light emitted from a light emitting element to the outside even if the concave reflecting surface is small. To do.

【０００７】[0007]

【課題を解決するための手段】上記課題を達成するため
に請求項１記載の発明の発光ダイオードは、発光素子と
前記発光素子が発する光を反射する凹面状反射面とを有
する発光ダイオードにおいて、前記凹面状反射面の前記
発光素子の発光面に対向する部分に凸状部が形成されて
いることを特徴とするものである。In order to achieve the above object, a light emitting diode according to the present invention is a light emitting diode having a light emitting element and a concave reflecting surface for reflecting the light emitted by the light emitting element, A convex portion is formed on a portion of the concave reflecting surface facing the light emitting surface of the light emitting element.

【０００８】請求項２記載の発明の発光ダイオードは、
請求項１記載の発明において、前記凸状部が略円錐状で
あることを特徴とするものである。The light emitting diode according to the invention of claim 2 is
The invention according to claim 1 is characterized in that the convex portion has a substantially conical shape.

【０００９】請求項３記載の発明の発光ダイオードは、
発光素子と前記発光素子が発する光を反射する凹面状反
射面とを有する発光ダイオードにおいて、前記凹面状反
射面の前記発光素子に電力を供給するリードフレームに
対向する部分に凸状部が形成されていることを特徴とす
るものである。A light emitting diode according to a third aspect of the invention is
In a light emitting diode having a light emitting element and a concave reflecting surface that reflects light emitted by the light emitting element, a convex portion is formed in a portion of the concave reflecting surface facing a lead frame that supplies power to the light emitting element. It is characterized by that.

【００１０】請求項４記載の発明の発光ダイオードは、
請求項３記載の発明において、前記凸状部は断面が略三
角形状で稜線が前記リードフレームと略平行に形成され
たものであることを特徴とするものである。A light emitting diode according to a fourth aspect of the invention is
The invention according to claim 3 is characterized in that the convex portion has a substantially triangular cross section, and a ridge line is formed substantially parallel to the lead frame.

【００１１】[0011]

【作用】請求項１記載の発明の発光ダイオードは、凹面
状反射面の発光素子の発光面に対向する部分に凸状部を
設けたことにより、凸状部により反射された光は凹面状
反射面の他のいずれかの部分で反射された後に外部に放
射されるので、凹面状反射面により反射された光は発光
素子に遮られることなく外部に放射される。したがっ
て、凹面状反射面が小さくても発光素子が発した光を効
率よく外部に放射することができる。In the light emitting diode according to the first aspect of the present invention, the convex portion is provided at the portion of the concave reflecting surface facing the light emitting surface of the light emitting element, so that the light reflected by the convex portion is concavely reflected. Since it is emitted to the outside after being reflected by any other part of the surface, the light reflected by the concave reflecting surface is emitted to the outside without being blocked by the light emitting element. Therefore, even if the concave reflecting surface is small, the light emitted from the light emitting element can be efficiently radiated to the outside.

【００１２】請求項２記載の発明の発光ダイオードは、
凸状部を略円錐状としたことにより、請求項１記載の発
明と同様の作用を奏する。A light emitting diode according to a second aspect of the invention is
Since the convex portion has a substantially conical shape, the same operation as that of the first aspect of the invention is achieved.

【００１３】請求項３記載の発明の発光ダイオードは、
凹面状反射面の発光素子に電力を供給するリードフレー
ムに対向する部分に凸状部を設けたことにより、凸状部
により反射された光は凹面状反射面の他のいずれかの部
分で反射された後に外部に放射されるので、凹面状反射
面により反射された光はリードフレームに遮られること
なく外部に放射される。したがって、凹面状反射面が小
さくても発光素子が発した光を効率よく外部に放射する
ことができる。A light emitting diode according to the invention of claim 3 is
By providing a convex portion in the portion of the concave reflecting surface that faces the lead frame that supplies power to the light emitting element, the light reflected by the convex portion is reflected by any other portion of the concave reflecting surface. After being reflected, the light reflected by the concave reflecting surface is radiated to the outside without being blocked by the lead frame. Therefore, even if the concave reflecting surface is small, the light emitted from the light emitting element can be efficiently radiated to the outside.

【００１４】請求項４記載の発明の発光ダイオードは、
凸状部を断面が略三角形状で稜線がリードフレームと略
平行に形成したことにより、請求項３記載の発明と同様
の作用を奏する。A light emitting diode according to a fourth aspect of the invention is
Since the convex portion has a substantially triangular cross section and the ridge line is formed substantially parallel to the lead frame, the same operation as that of the third aspect of the invention is achieved.

【００１５】[0015]

【実施例】以下に本発明の第一実施例について図１及び
図２を参照して説明する。図１は、本発明の第一実施例
である発光ダイオードの概略背面図である。図２は、図
１に示す発光ダイオードのＡ−Ａ矢視方向概略断面図で
ある。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a schematic rear view of a light emitting diode which is a first embodiment of the present invention. FIG. 2 is a schematic sectional view of the light emitting diode shown in FIG.

【００１６】本発明の第一実施例である発光ダイオード
１は、発光素子１２と、発光素子１２に電力を供給する
リードフレーム１４ａ，１４ｂと、光透過性材料１６
と、発光素子１２が発する光を反射する凹面状反射面１
８と、凹面状反射面１８により反射された光を外部に放
射する放射面２２とを有する。発光素子１２は、リード
フレーム１４ａの先端部に配置され、ワイヤ２４により
リードフレーム１４ｂと電気的に接続されている。発光
素子１２と、リードフレーム１４ａ，１４ｂの先端部
と、ワイヤ２４とは光透過性材料１６により一体的に封
止されている。凹面状反射面１８は、光透過性材料１６
の表面を鍍金や金属蒸着等により鏡面加工することによ
り形成され、発光素子１２の発光面側に配置される。ま
た、凹面状反射面１８の発光素子１２の発光面に対向す
る部分に円錐状の凸状部２６が形成されている。放射面
２２は、発光素子１２の背面側に平面状に形成される。The light emitting diode 1 according to the first embodiment of the present invention includes a light emitting element 12, lead frames 14a and 14b for supplying electric power to the light emitting element 12, and a light transmissive material 16.
And a concave reflecting surface 1 for reflecting the light emitted by the light emitting element 12.
8 and an emission surface 22 that emits the light reflected by the concave reflection surface 18 to the outside. The light emitting element 12 is arranged at the tip of the lead frame 14a, and is electrically connected to the lead frame 14b by the wire 24. The light emitting element 12, the tip portions of the lead frames 14a and 14b, and the wire 24 are integrally sealed by the light transmissive material 16. The concave reflecting surface 18 is made of the light transmitting material 16
Is formed by mirror-finishing the surface of the light-emitting element 12 by plating or metal deposition, and is arranged on the light-emitting surface side of the light-emitting element 12. Further, a conical convex portion 26 is formed in a portion of the concave reflecting surface 18 facing the light emitting surface of the light emitting element 12. The radiation surface 22 is formed in a flat shape on the back surface side of the light emitting element 12.

【００１７】本発明の第一実施例によれば、発光素子１
２が発する光のうち直接凹面状反射面１８に達する光は
凹面状反射面１８により反射された後に放射面２２から
放射される。また、凹面状反射面１８の発光素子１２の
発光面に対向する部分に円錐状の凸状部２６を設けたこ
とにより、凸状部２６により反射された光は凹面状反射
面１８の他のいずれかの部分で反射された後に放射面２
２から外部に放射されるので、凹面状反射面１８により
反射された光は発光素子１２に遮られることなく外部に
放射される。したがって、凹面状反射面１８の直径がφ
２ｍｍ以下であっても発光素子が発した光を効率よく外
部に放射することができる。但し、凹面状反射面１８の
大きさは少なくとも発光素子より大きいものでなければ
ならない。According to the first embodiment of the present invention, the light emitting device 1
Of the light emitted by 2, the light directly reaching the concave reflecting surface 18 is reflected by the concave reflecting surface 18 and then emitted from the emitting surface 22. Further, since the conical convex portion 26 is provided in the portion of the concave reflecting surface 18 facing the light emitting surface of the light emitting element 12, the light reflected by the convex portion 26 is different from that of the concave reflecting surface 18. Radiation surface 2 after being reflected at any part
Since the light is radiated to the outside from 2, the light reflected by the concave reflecting surface 18 is radiated to the outside without being blocked by the light emitting element 12. Therefore, the diameter of the concave reflecting surface 18 is φ.
Even if it is 2 mm or less, the light emitted from the light emitting element can be efficiently radiated to the outside. However, the size of the concave reflecting surface 18 must be at least larger than the light emitting element.

【００１８】尚、第一実施例では、凹面状反射面１８に
形成した凸状部２６を円錐状としたが本発明はこれに限
定されず、例えば三角錐等の形状であってもよい。In the first embodiment, the convex portion 26 formed on the concave reflecting surface 18 has a conical shape, but the present invention is not limited to this, and may have a triangular pyramid shape, for example.

【００１９】次に、本発明の第二実施例について図３及
び図４を参照して説明する。図３は、本発明の第二実施
例である発光ダイオードの概略背面図である。図４は、
図２に示す発光ダイオードのＡ−Ａ矢視方向概略断面図
である。尚、第二実施例の発光ダイオードにおいて第一
実施例のものと同一の機能を有するものには、同一の符
号又は対応する符号を付すことにより、その詳細な説明
を省略する。Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 3 is a schematic rear view of a light emitting diode which is a second embodiment of the present invention. Figure 4
FIG. 3 is a schematic cross-sectional view taken along the line AA of the light emitting diode shown in FIG. 2. Incidentally, in the light emitting diode of the second embodiment, those having the same functions as those of the first embodiment are designated by the same reference numerals or corresponding reference numerals, and detailed description thereof will be omitted.

【００２０】図３に示す発光ダイオード３が第一実施例
のものと異なる点は、第一実施例の円錐状の凸状部２６
に代えて、凹面状反射面１８０のリードフレーム１４ａ
に対向する部分に断面が略三角形状で稜線３６がリード
フレーム１４ａと略平行な凸状部３２を形成したことで
ある。The light emitting diode 3 shown in FIG. 3 differs from that of the first embodiment in that the conical convex portion 26 of the first embodiment is used.
Instead of the lead frame 14a of the concave reflecting surface 180
That is, the ridge 36 forms a convex portion 32 having a substantially triangular cross section and being substantially parallel to the lead frame 14a at a portion facing to.

【００２１】本発明の第二実施例によれば、凹面状反射
面１８０のリードフレーム１４ａに対向する部分に断面
が略三角形状で稜線３６がリードフレーム１４ａと略平
行な凸状部３２を設けたことにより、凸状部３２により
反射された光は凹面状反射面１８０の他のいずれかの部
分で反射された後に放射面２２から外部に放射されるの
で、凹面状反射面１８０により反射された光はリードフ
レーム１４ａに遮られることなく外部に放射される。し
たがって、凹面状反射面１８０が小さくても発光素子が
発した光を効率よく外部に放射することができる。According to the second embodiment of the present invention, a convex portion 32 having a substantially triangular cross section and a ridge line 36 substantially parallel to the lead frame 14a is provided at a portion of the concave reflecting surface 180 facing the lead frame 14a. As a result, the light reflected by the convex portion 32 is reflected by any other portion of the concave reflecting surface 180 and then radiated to the outside from the emitting surface 22, so that the light is reflected by the concave reflecting surface 180. The emitted light is emitted to the outside without being blocked by the lead frame 14a. Therefore, even if the concave reflecting surface 180 is small, the light emitted from the light emitting element can be efficiently radiated to the outside.

【００２２】尚、第二実施例では、凹面状反射面１８０
に形成した凸状部３２を断面が略三角形状で稜線３６が
リードフレーム１４ａと略平行なものとしたが本発明は
これに限定されない。In the second embodiment, the concave reflecting surface 180
However, the present invention is not limited to this.

【００２３】本発明は、上記の各実施例に限定されるも
のではなく、その要旨の範囲内において数々の変形が可
能である。たとえば、凹面状反射面１８，１８０に設け
られた凸状部２６，３２は、凹面状反射面１８に連続し
て形成されるものでなくてもよく、凹面状反射面と凸状
部との間に段差を設けてもよい。The present invention is not limited to the above-mentioned embodiments, but various modifications are possible within the scope of the invention. For example, the convex portions 26 and 32 provided on the concave reflecting surfaces 18 and 180 do not have to be formed continuously with the concave reflecting surface 18, and the concave reflecting surface and the convex portion are not necessarily formed continuously. A step may be provided between them.

【００２４】[0024]

【発明の効果】以上説明したように請求項１記載の発明
は、凹面状反射面の発光素子の発光面に対向する部分に
凸状部を設けたことにより、凸状部により反射された光
は凹面状反射面の他のいずれかの部分で反射された後に
外部に放射されるので、凹面状反射面により反射された
光は発光素子に遮られることなく外部に放射され、した
がって、凹面状反射面が小さい場合でも従来のものと比
べて発光素子が発した光を効率よく外部に放射すること
ができる発光ダイオードを提供することができる。As described above, according to the first aspect of the invention, the light reflected by the convex portion is provided by providing the convex portion in the portion of the concave reflecting surface facing the light emitting surface of the light emitting element. Is radiated to the outside after being reflected by any other part of the concave reflection surface, the light reflected by the concave reflection surface is radiated to the outside without being blocked by the light emitting element, and thus the concave shape It is possible to provide a light emitting diode capable of efficiently radiating the light emitted from the light emitting element to the outside as compared with the conventional one even when the reflecting surface is small.

【００２５】請求項２記載の発明は、請求項１記載の発
明において、凸状部を略円錐状としたことにより、請求
項１記載の発明と同様の効果を有する発光ダイオードを
提供することができる。The invention according to claim 2 provides the light emitting diode having the same effect as that of the invention according to claim 1 in the invention according to claim 1, in which the convex portion is substantially conical. it can.

【００２６】請求項３記載の発明は、凹面状反射面の発
光素子に電力を供給するリードフレームに対向する部分
に凸状部を設けたことにより、凸状部により反射された
光は凹面状反射面の他のいずれかの部分で反射された後
に外部に放射されるので、凹面状反射面により反射され
た光はリードフレームに遮られることなく外部に放射さ
れ、したがって、凹面状反射面が小さくても発光素子が
発した光を効率よく外部に放射することができる発光ダ
イオードを提供することができる。According to the third aspect of the present invention, since the convex portion is provided in the portion of the concave reflecting surface facing the lead frame for supplying power to the light emitting element, the light reflected by the convex portion is concave. Since it is emitted to the outside after being reflected by any other part of the reflecting surface, the light reflected by the concave reflecting surface is emitted to the outside without being blocked by the lead frame. It is possible to provide a light emitting diode that can efficiently radiate light emitted from a light emitting element to the outside even if it is small.

【００２７】請求項４記載の発明は、請求項３記載の発
明において、凸状部を断面が略三角形状で稜線がリード
フレームと略平行に形成したことにより、請求項３記載
の発明と同様の効果を有する発光ダイオードを提供する
ことができる。The invention according to claim 4 is the same as the invention according to claim 3, in which, in the invention according to claim 3, the convex portion has a substantially triangular cross section and the ridge line is formed substantially parallel to the lead frame. It is possible to provide a light emitting diode having the above effect.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の第一実施例である発光ダイオードの概
略背面図である。FIG. 1 is a schematic rear view of a light emitting diode that is a first embodiment of the present invention.

【図２】図１に示す発光ダイオードのＡ−Ａ矢視方向概
略断面図である。FIG. 2 is a schematic sectional view of the light emitting diode shown in FIG.

【図３】本発明の第二実施例である発光ダイオードの概
略背面図である。FIG. 3 is a schematic rear view of a light emitting diode that is a second embodiment of the present invention.

【図４】図２に示す発光ダイオードのＡ−Ａ矢視方向概
略断面図である。FIG. 4 is a schematic sectional view of the light emitting diode shown in FIG.

【図５】従来の発光ダイオードの概略正面図である。FIG. 5 is a schematic front view of a conventional light emitting diode.

【図６】図５に示す発光ダイオードのＡ−Ａ矢視方向概
略断面図である。6 is a schematic cross-sectional view taken along the line AA of the light emitting diode shown in FIG.

【符号の説明】[Explanation of symbols]

１，３ 発光ダイオード １２ 発光素子 １４ａ，１４ｂ リードフレーム １６ 光透過性材料 １８，１８０ 凹面状反射面 ２２ 放射面 ２４ ワイヤ ２６，３２ 凸状部 ３６ 稜線 1,3 Light emitting diode 12 Light emitting element 14a, 14b Lead frame 16 Light transmissive material 18,180 Concave reflecting surface 22 Radiating surface 24 Wire 26,32 Convex portion 36 Ridge line

Claims (4)

【特許請求の範囲】[Claims] 【請求項１】 発光素子と前記発光素子が発する光を反
射する凹面状反射面とを有する発光ダイオードにおい
て、前記凹面状反射面の前記発光素子の発光面に対向す
る部分に凸状部が形成されていることを特徴とする発光
ダイオード。1. A light emitting diode having a light emitting element and a concave reflecting surface for reflecting light emitted by the light emitting element, wherein a convex portion is formed on a portion of the concave reflecting surface facing the light emitting surface of the light emitting element. The light emitting diode characterized by being. 【請求項２】 前記凸状部は、略円錐状であることを特
徴とする請求項１記載の発光ダイオード。2. The light emitting diode according to claim 1, wherein the convex portion has a substantially conical shape. 【請求項３】 発光素子と前記発光素子が発する光を反
射する凹面状反射面とを有する発光ダイオードにおい
て、前記凹面状反射面の前記発光素子に電力を供給する
リードフレームに対向する部分に凸状部が形成されてい
ることを特徴とする発光ダイオード。3. A light emitting diode having a light emitting element and a concave reflecting surface for reflecting light emitted by the light emitting element, wherein a convex portion of the concave reflecting surface faces a lead frame for supplying power to the light emitting element. A light-emitting diode characterized in that a light-emitting diode is formed. 【請求項４】 前記凸状部は、断面が略三角形状で稜線
が前記リードフレームと略平行に形成されたものである
ことを特徴とする請求項３記載の発光ダイオード。4. The light emitting diode according to claim 3, wherein the convex portion has a substantially triangular cross section and a ridge line formed substantially parallel to the lead frame.
JP5160311A 1993-06-04 1993-06-04 Light emitting diode Pending JPH06350140A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5160311A JPH06350140A (en) 1993-06-04 1993-06-04 Light emitting diode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5160311A JPH06350140A (en) 1993-06-04 1993-06-04 Light emitting diode

Publications (1)

Publication Number Publication Date
JPH06350140A true JPH06350140A (en) 1994-12-22

Family

ID=15712219

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5160311A Pending JPH06350140A (en) 1993-06-04 1993-06-04 Light emitting diode

Country Status (1)

Country Link
JP (1) JPH06350140A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5557798A (en) * 1989-07-27 1996-09-17 Tibco, Inc. Apparatus and method for providing decoupling of data exchange details for providing high performance communication between software processes
US6729746B2 (en) 2000-03-14 2004-05-04 Toyoda Gosei Co., Ltd. Light source device
US20090018452A1 (en) * 2007-03-30 2009-01-15 Nihon Kohden Corporation Probe adapted to measure biological signal
JP2010194000A (en) * 2009-02-24 2010-09-09 Seiko Epson Corp Optical sensor and measurement system
US8646940B2 (en) 2009-07-23 2014-02-11 Lg Innotek Co., Ltd. Light emitting device
US9841162B2 (en) 2009-05-18 2017-12-12 Cree, Inc. Lighting device with multiple-region reflector

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5557798A (en) * 1989-07-27 1996-09-17 Tibco, Inc. Apparatus and method for providing decoupling of data exchange details for providing high performance communication between software processes
US6729746B2 (en) 2000-03-14 2004-05-04 Toyoda Gosei Co., Ltd. Light source device
US20090018452A1 (en) * 2007-03-30 2009-01-15 Nihon Kohden Corporation Probe adapted to measure biological signal
JP2009213833A (en) * 2007-03-30 2009-09-24 Nippon Koden Corp Probe adapted to measure biological signal
JP2010194000A (en) * 2009-02-24 2010-09-09 Seiko Epson Corp Optical sensor and measurement system
US9841162B2 (en) 2009-05-18 2017-12-12 Cree, Inc. Lighting device with multiple-region reflector
US8646940B2 (en) 2009-07-23 2014-02-11 Lg Innotek Co., Ltd. Light emitting device
US9458984B2 (en) 2009-07-23 2016-10-04 Lg Innotek Co., Ltd. Light emitting device

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