JP2000149608A - Led and lighting system using the same - Google Patents
Led and lighting system using the sameInfo
- Publication number
- JP2000149608A JP2000149608A JP10320145A JP32014598A JP2000149608A JP 2000149608 A JP2000149608 A JP 2000149608A JP 10320145 A JP10320145 A JP 10320145A JP 32014598 A JP32014598 A JP 32014598A JP 2000149608 A JP2000149608 A JP 2000149608A
- Authority
- JP
- Japan
- Prior art keywords
- light
- led
- optical fiber
- emitting surface
- led 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.)
- Granted
Links
Landscapes
- Optical Couplings Of Light Guides (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Planar Illumination Modules (AREA)
- Led Device Packages (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、狭窄型のＬＥＤ素
子を具備するＬＥＤ、および工場での製品検査等に用い
られる照明装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an LED having a constriction type LED element and an illumination device used for product inspection in a factory.
【０００２】[0002]
【従来の技術】この種の照明装置として、多数のＬＥＤ
を基板に敷き詰め、各ＬＥＤに光ファイバをそれぞれ取
り付けるとともに、これら光ファイバを束ねて光ファイ
バ束とし、この光ファイバ束の他端から光を射出可能に
構成したものを、本願発明者は開発している。係る照明
装置は、コンパクトで長寿命等、数々の利点を有するも
のである。2. Description of the Related Art A large number of LEDs are used as this type of lighting device.
The present inventor has developed a structure in which optical fibers are attached to each LED, and these optical fibers are bundled to form an optical fiber bundle, and light can be emitted from the other end of the optical fiber bundle. ing. Such a lighting device has many advantages such as compactness and long life.
【０００３】しかして、従来、この種の照明装置を組み
立てる際には、各ＬＥＤの表面に光ファイバを１本毎に
樹脂接着剤等を用いて取り付けていた。Conventionally, when assembling this type of lighting device, an optical fiber is attached to the surface of each LED one by one using a resin adhesive or the like.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、このよ
うな方法で光ファイバを取り付けるためには、多大な労
力と時間が必要となり、組み立てコストが嵩むだけでな
く、１本１本の光ファイバをＬＥＤに取り付ける際の取
付位置精度にばらつきが生じて、ＬＥＤから射出される
光を効率的に光ファイバに導くことが難しいという問題
点があった。However, attaching an optical fiber by such a method requires a great deal of labor and time, which not only increases the assembly cost but also increases the cost of each optical fiber. However, there is a problem that it is difficult to efficiently guide the light emitted from the LED to the optical fiber due to a variation in the mounting position accuracy when the LED is mounted.
【０００５】また、従来のＬＥＤは発光面積がある程度
大きく、光ファイバを細径のものにすると、ＬＥＤと光
ファイバとの間での光量ロスが増大するため、光ファイ
バに細径のものを用い難かった。したがって、照明光度
を高めるためにＬＥＤの数を増やすと、光ファイバ束の
径が大きくなるため、上記組み立てコストの増大とあい
まって、一定以上に照明光度を高められないという問題
点が生じ得た。[0005] Further, the conventional LED has a large light emitting area to some extent, and if the optical fiber is made to have a small diameter, the loss of light quantity between the LED and the optical fiber increases. It was difficult. Therefore, when the number of LEDs is increased in order to increase the illumination luminous intensity, the diameter of the optical fiber bundle becomes large, and in combination with the increase in the assembly cost, a problem that the illumination luminous intensity cannot be increased beyond a certain level may occur. .
【０００６】一方、近時、狭窄型ＬＥＤと称され、図
８、図９に示すように、ＬＥＤ素子２を構成するチップ
に電流阻止層２２を形成し、この電流阻止層２２の形成
されていない部位のみを発光させるようにしたものが開
発されている。このものは、電流阻止層２２の形状によ
り、発光面２１のうち、例えば径が５０μｍという極め
て小さな部分２４から発光させることが可能で、ほとん
ど点光源とみなせるような発光状態を具現化し得るもの
である。なお同図中符号２３は電流供給のための配線で
ある。しかして、このような狭窄型ＬＥＤの有効な使用
方法について模索が行われていた。On the other hand, recently, a current blocking layer 22 is formed on a chip constituting the LED element 2 as shown in FIGS. 8 and 9 and the current blocking layer 22 is formed. A device that emits light only at a non-existing portion has been developed. This can emit light from an extremely small portion 24 having a diameter of, for example, 50 μm in the light emitting surface 21 depending on the shape of the current blocking layer 22 and can realize a light emitting state almost regarded as a point light source. is there. In the figure, reference numeral 23 denotes a wiring for supplying a current. Thus, there has been a search for an effective method of using such a constriction type LED.
【０００７】[0007]
【課題を解決するための手段】本発明は、係る問題点を
解決すべくなされたものであって、ＬＥＤを構成する透
明体に光ファイバを挿入できるファイバ挿入穴を設けて
おくことによって、光ファイバを極めて簡単にかつ正確
に取り付けられるようにするとともに、点発光するとい
う狭窄型のＬＥＤ素子の特徴を生かし、該ＬＥＤ素子か
ら射出される光を、細径の光ファイバに効率よく導き得
るようにすることを主たる目的としている。DISCLOSURE OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has been made by providing a fiber insertion hole for inserting an optical fiber in a transparent body constituting an LED. In addition to allowing the fiber to be attached very easily and accurately, taking advantage of the characteristics of the constriction type LED element that emits a point light, light emitted from the LED element can be efficiently guided to a small-diameter optical fiber. The main purpose is to
【０００８】[0008]
【発明の実施の形態】すなわち、本発明に係るＬＥＤ
は、発光面を有したＬＥＤ素子を透明体内に埋設してな
るものであって、前記ＬＥＤ素子に、発光面の略一点が
発光する狭窄型のものを用いるとともに、前記透明体
に、光ファイバを挿入可能なファイバ挿入穴を、その底
面がＬＥＤ素子の発光面に近接するように設けたことを
特徴とする。DESCRIPTION OF THE PREFERRED EMBODIMENTS That is, the LED according to the present invention
Is a device in which an LED element having a light emitting surface is embedded in a transparent body, and the LED element is a constricted type in which approximately one point of the light emitting surface emits light. A fiber insertion hole into which the LED can be inserted is provided such that the bottom surface is close to the light emitting surface of the LED element.
【０００９】このようなものであれば、狭窄型のものの
特徴である点発光できるという点を有効に利用して、射
出した光を、細径の光ファイバに効率よく導入できるよ
うになる。したがって、例えば多数のＬＥＤにそれぞれ
光ファイバを取り付けこれら光ファイバの光導出端を束
ねた場合に、単位面積あたりの光量を増大させて光をよ
り集中させることができるようになる。また、かかる場
合には、光ファイバの取付位置決めを正確に行わなけれ
ばならないが、透明体にファイバ挿入穴が形成されてい
るので、光ファイバを簡単かつ正確に位置合わせして取
り付けることが可能となる。したがって組立作業の軽減
にも寄与し得る。With this configuration, the emitted light can be efficiently introduced into a small-diameter optical fiber by effectively utilizing the point emission characteristic of the narrow type. Therefore, for example, when an optical fiber is attached to each of a large number of LEDs and the light leading ends of the optical fibers are bundled, the light amount per unit area can be increased and the light can be more concentrated. In such a case, the mounting position of the optical fiber must be accurately determined.However, since the fiber insertion hole is formed in the transparent body, it is possible to easily and accurately align and mount the optical fiber. Become. Therefore, it can contribute to the reduction of the assembling work.
【００１０】係るＬＥＤを有効に利用した実施態様とし
ては、ＬＥＤに設けられたファイバ挿入穴に光ファイバ
の光導入端を挿入し、該ＬＥＤから射出される光を前記
光ファイバの光導出端から導出して照明に利用するよう
にした照明装置が挙げられる。狭窄型のＬＥＤが点発光
源とみなせることを利用して、より効率的にＬＥＤ射出
光を光ファイバ内に導くには、ＬＥＤ素子の発光面と光
ファイバの光導入端との間に、ＬＥＤ素子から射出され
る光を屈曲させる光屈折部を配設してなるものが好まし
い。点発光源であれば、ＬＥＤ素子から射出される光の
大半を、例えば凸レンズのような簡単な構成の光屈折部
で、非常に細径の平行光とすることができ、ファイバ内
部に導入される光量を大幅に増大させることができるか
らである。この場合に光屈折部はできるだけＬＥＤ素子
の発光面に近接させることが光量ロスを軽減する上で好
ましい。In an embodiment in which the LED is effectively used, a light introduction end of an optical fiber is inserted into a fiber insertion hole provided in the LED, and light emitted from the LED is transmitted from a light exit end of the optical fiber. There is a lighting device which is derived and used for lighting. In order to more efficiently guide the LED emission light into the optical fiber using the fact that the constriction type LED can be regarded as a point light source, the LED is disposed between the light emitting surface of the LED element and the light introduction end of the optical fiber. It is preferable to provide a light refracting portion for bending light emitted from the element. If it is a point light source, most of the light emitted from the LED element can be converted into a very small diameter parallel light by a light refraction unit having a simple configuration such as a convex lens, and is introduced into the fiber. This is because the light amount can be greatly increased. In this case, it is preferable to make the light refracting portion as close as possible to the light emitting surface of the LED element in order to reduce the light amount loss.
【００１１】光屈折部を簡単に形成できる具体的実施態
様としては、光屈折部が、ファイバ挿入穴の底面を凸状
に膨出させてなるものであることが望ましい。照明装置
のコンパクト化等を実現するには、複数のＬＥＤを基板
上に敷き詰め、各ＬＥＤにそれぞれ光ファイバを配設し
ているものが好適である。As a specific embodiment in which the light refracting portion can be easily formed, it is preferable that the light refracting portion is formed by protruding the bottom surface of the fiber insertion hole into a convex shape. In order to realize a compact lighting device or the like, it is preferable that a plurality of LEDs are spread on a substrate and an optical fiber is provided for each LED.
【００１２】[0012]
【実施例】以下本発明の一実施例を、図１から図９を参
照して説明する。本実施例による照明装置は、工場の製
品検査等に用いられるものであり、図１に示すように、
光源Ｌを内蔵する装置本体８と、被検査物に光を照射す
るための照明用部材９と、装置本体８及び照明用部材９
間を連結し、光源Ｌから射出された光を照明用部材９に
導くための光ファイバ束１０とを具備してなる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. The lighting device according to the present embodiment is used for product inspection of factories and the like, and as shown in FIG.
An apparatus main body 8 containing a light source L, an illumination member 9 for irradiating light to an inspection object, an apparatus main body 8 and an illumination member 9
And an optical fiber bundle 10 for guiding the light emitted from the light source L to the lighting member 9.
【００１３】光源Ｌは、図２に示すように、複数のＬＥ
Ｄ１をプリント基板７上に敷き詰めるように実装してな
るものである。実装されるＬＥＤ１の数は、要求される
照明光度により変わることはいうまでもないが、例えば
本実施例ではその数を２００程度に設定している。プリ
ント基板７には、各ＬＥＤ１に電源を供給するための図
示しない電源ラインが敷設されている。また、放熱のた
めに、図１に示すように、プリント基板７の裏側にはヒ
ートシンク１１が貼着してあり、装置本体８内に外気を
強制的に導入循環させるためのファン１２を取り付けて
ある。さらに、この装置本体８内には、図示しないが、
この他に、電源装置や、この電源供給をオン／オフする
ためのスイッチ等が内蔵されている。また、本実施例で
は、ＬＥＤ１の光量調整を、電源をパルス化してそのオ
ン／オフ時間の比を変えて調整するといういわゆるＰＷ
Ｍ方式により行っている。As shown in FIG. 2, the light source L includes a plurality of LEs.
D1 is mounted so as to be spread over the printed circuit board 7. Needless to say, the number of mounted LEDs 1 varies depending on the required illuminance, but for example, the number is set to about 200 in this embodiment. A power supply line (not shown) for supplying power to each LED 1 is laid on the printed circuit board 7. As shown in FIG. 1, a heat sink 11 is attached to the back side of the printed circuit board 7 for heat radiation, and a fan 12 for forcibly introducing and circulating outside air into the apparatus main body 8 is attached. is there. Further, although not shown, inside the apparatus main body 8,
In addition, a power supply device, a switch for turning on / off the power supply, and the like are incorporated. In this embodiment, the light amount of the LED 1 is adjusted by pulsing the power supply and changing the on / off time ratio, which is a so-called PW adjustment.
It is performed by the M method.
【００１４】ＬＥＤ１は表面実装型と称されるもので、
図３に示すように、発光面２１を有するＬＥＤ素子２を
透明体３に封入してなるものである。ＬＥＤ素子２は、
先に説明したが、図８、図９に示すようにその発光面２
１が極めて小さい狭窄型チップを主体として構成されて
いるものである。透明体３は、例えば直方体形状のエポ
キシ樹脂製のものである。しかして、この透明体３の底
部中央にＬＥＤ素子２は埋設されている。The LED 1 is called a surface mount type.
As shown in FIG. 3, an LED element 2 having a light emitting surface 21 is sealed in a transparent body 3. LED element 2
As described above, as shown in FIGS.
Numeral 1 mainly comprises an extremely small constriction type chip. The transparent body 3 is made of, for example, a rectangular parallelepiped epoxy resin. The LED element 2 is embedded in the center of the bottom of the transparent body 3.
【００１５】光ファイバ束１０は、光ファイバ４を束ね
てなるものである。光ファイバ４は、例えばその径ｈ１
が０．２５ｍｍの細径タイプのもので、その素材として
はプラスティックやガラス等の一般的なものを用いてい
る。係る光ファイバ４は、光導入端４１に導入される光
のうち、ファイバ軸に対して所定角度範囲（例えば６０
度）内の光のみしか伝達できない特性を有するしかし
て、本実施例では、この透明体３の表面中央部に開口
し、底面５１をＬＥＤ素子２の直上近傍に位置させたフ
ァイバ挿入穴５を設けている。このファイバ挿入穴５
は、ＬＥＤ素子２の発光面２１に対し略垂直に形成され
たものであって、光ファイバ４を略隙間なく挿入できる
ように、その径ｈ２が略０．２５ｍｍ程度に設定してあ
る。また、その底面５１は、中央が盛り上がるように膨
出する曲面形状にしてあり、凸レンズ作用を営む光屈折
部６が構成されるようにしている。そして、ＬＥＤ素子
２から射出される光（図４中点線で示す）がこの光屈折
部６において屈折して略平行光となるように設定されて
いる。光ファイバ４は、図４に示すようにその光導入端
４１が、ファイバ挿入穴５の底面５１に略接触するま
で、このファイバ挿入穴５に挿入されて接着剤ＡＴ等で
固定される。The optical fiber bundle 10 is a bundle of the optical fibers 4. The optical fiber 4 has a diameter h1 for example.
Is a small-diameter type of 0.25 mm, and a general material such as plastic or glass is used as the material. The optical fiber 4 has a predetermined angle range (for example, 60 degrees) with respect to the fiber axis of the light introduced into the light introduction end 41.
In this embodiment, the fiber insertion hole 5 having an opening at the center of the surface of the transparent body 3 and having the bottom surface 51 positioned immediately above the LED element 2 is provided in this embodiment. Provided. This fiber insertion hole 5
Is formed substantially perpendicularly to the light emitting surface 21 of the LED element 2, and has a diameter h2 set to about 0.25 mm so that the optical fiber 4 can be inserted with almost no gap. Further, the bottom surface 51 has a curved surface shape which bulges so that the center is raised, so that the light refracting portion 6 which functions as a convex lens is formed. The light (indicated by a dotted line in FIG. 4) emitted from the LED element 2 is set so as to be refracted by the light refracting portion 6 to become substantially parallel light. The optical fiber 4 is inserted into the fiber insertion hole 5 and fixed with an adhesive AT or the like until the light introducing end 41 substantially contacts the bottom surface 51 of the fiber insertion hole 5 as shown in FIG.
【００１６】このような構成であれば、点発光が可能な
狭窄型のＬＥＤ１を用い、かつ光屈折部６を可及的にＬ
ＥＤ素子２の発光面２１に近接させているので、ＬＥＤ
素子２から射出される光の大半を、簡単な構成の光屈折
部６で、非常に細径の略平行光とすることができる。し
たがって、光ファイバ４に従来より細径（０．２５ｍｍ
径）のものを採用しても、この光ファイバ４に、ＬＥＤ
射出光を極めて効率良く導入することができる。したが
って、光導出端４２から射出される光の単位面積当たり
の光量を増大できることとなり、ＬＥＤ１の数を増やし
ても、光ファイバ束１０の径を大きくすることなく照明
光度を高めることができるようになる。逆に、ＬＥＤ１
の数が同数であれば、従来の装置に比べ光ファイバ束１
０の径をより小さくすることができるようになる。With such a configuration, the narrowed LED 1 capable of point emission is used, and the light refracting portion 6 is set as low as possible.
Since it is close to the light emitting surface 21 of the ED element 2, the LED
Most of the light emitted from the element 2 can be converted into a very small diameter substantially parallel light by the light refracting portion 6 having a simple configuration. Therefore, the optical fiber 4 has a smaller diameter (0.25 mm
Diameter), the optical fiber 4 may be
The emitted light can be introduced very efficiently. Therefore, the amount of light per unit area of the light emitted from the light exit end 42 can be increased, and even if the number of LEDs 1 is increased, the illumination luminous intensity can be increased without increasing the diameter of the optical fiber bundle 10. Become. Conversely, LED1
If the number of optical fiber bundles is the same, the optical fiber bundle 1
The diameter of 0 can be made smaller.
【００１７】さらに、このような構成であると、光ファ
イバ４をＬＥＤ１に取り付けるための位置精度が悪い
と、取付部分での光量ロスが大きくなり、致命的な問題
点となるが、ＬＥＤ１を構成される透明体３に、ファイ
バ挿入穴５が形成されているので、ＬＥＤ１に光ファイ
バ４を簡単かつ正確に位置合わせして取り付けることが
可能であり、組立工程の削減を図りつつ、ＬＥＤ素子２
と光ファイバ４の光導入端４１との間で生じる光量ロス
を大きく低減することができる。Furthermore, with such a configuration, if the positional accuracy for attaching the optical fiber 4 to the LED 1 is poor, the loss of light quantity at the attachment portion increases, which is a fatal problem. Since the fiber insertion hole 5 is formed in the transparent body 3 to be formed, the optical fiber 4 can be easily and accurately aligned and attached to the LED 1, and the LED element 2 can be reduced while reducing the assembling process.
The loss of the amount of light generated between the optical fiber 4 and the light introducing end 41 of the optical fiber 4 can be greatly reduced.
【００１８】なお、本発明は上記実施例に限られるもの
ではない。例えば、光屈折部を別体に形成した凸レンズ
とし、ファイバ挿入穴の底面と、光ファイバの光導入端
の間に挟み込ませるように配設しても構わない。また、
光量的には十分である場合など、光ファイバ４の光導入
端４１とＬＥＤ素子２との間でのロスが問題にならない
場合は、図５、図６に示すようにファイバ挿入穴５の底
面５１を平面にし、光屈折部を設けないようにしたもの
でも構わない。The present invention is not limited to the above embodiment. For example, the light refracting portion may be formed as a separate convex lens, and may be disposed between the bottom surface of the fiber insertion hole and the light introducing end of the optical fiber. Also,
When the loss between the light introduction end 41 of the optical fiber 4 and the LED element 2 does not matter, such as when the light quantity is sufficient, as shown in FIGS. A structure in which 51 is a flat surface and the light refraction portion is not provided may be used.
【００１９】ＬＥＤは、例えばラジアルタイプと称され
る砲弾型のものや、その他種々の形状のものを適用可能
で、ファイバ挿入穴を形成することにより、上記実施例
と同様の効果を奏し得る。加えて、図７に示すように、
ＬＥＤ１を、複数のＬＥＤ素子２を一の透明体３により
モールドし、各ＬＥＤ素子２に対応させてファイバ挿入
穴５を設けてなるものとしてもよい。As the LED, for example, a shell type called a radial type or other various shapes can be applied. By forming a fiber insertion hole, the same effect as the above embodiment can be obtained. In addition, as shown in FIG.
The LED 1 may be formed by molding a plurality of LED elements 2 with one transparent body 3 and providing a fiber insertion hole 5 corresponding to each LED element 2.
【００２０】さらに言えば、係るＬＥＤは照明装置のみ
ならず、センサ等にも好適に適用しうる。その他、各部
の構成は図示例に限定されるものではなく、本発明の趣
旨を逸脱しない範囲で種々変形が可能である。Furthermore, the LED can be suitably applied not only to a lighting device but also to a sensor or the like. In addition, the configuration of each unit is not limited to the illustrated example, and various modifications can be made without departing from the spirit of the present invention.
【００２１】[0021]
【発明の効果】以上説明したように、本発明によれば、
狭窄型のものの特徴である点発光できるという点を有効
に利用して、ＬＥＤから射出した光を、従来では用いる
ことができなかった細径の光ファイバに効率よく導入で
きるようになる。したがって、例えば多数のＬＥＤにそ
れぞれ光ファイバを取り付けこれら光ファイバの光導出
端を束ねた場合に、単位面積あたりの光量を増大させて
光をより集中させることができるようになる。また、か
かる場合には、光ファイバの取付位置決めを正確に行わ
なければならないが、透明体にファイバ挿入穴が形成さ
れているので、光ファイバを簡単かつ正確に位置合わせ
して取り付けることが可能となる。したがって光ファイ
バの取付作業の軽減にも寄与し得る。As described above, according to the present invention,
The light emitted from the LED can be efficiently introduced into a small-diameter optical fiber, which could not be used conventionally, by effectively utilizing the point emission characteristic of the narrow type. Therefore, for example, when an optical fiber is attached to each of a large number of LEDs and the light leading ends of the optical fibers are bundled, the light amount per unit area can be increased and the light can be more concentrated. In such a case, the mounting position of the optical fiber must be accurately determined.However, since the fiber insertion hole is formed in the transparent body, it is possible to easily and accurately align and mount the optical fiber. Become. Therefore, it can contribute to the reduction of the work of attaching the optical fiber.
【００２２】また、係るＬＥＤに設けられたファイバ挿
入穴に光ファイバの光導入端を挿入し、該ＬＥＤから射
出される光を前記光ファイバの光導出端から導出して照
明に利用するようにした照明装置であれば、上述した利
点を有効に活用できる。すなわち、多数の光ファイバを
束ねて光ファイバ束とし、光ファイバ束の光導出端から
光を導出して照明するような場合に、従来と同一径の光
ファイバ束とするのであれば、照明光度を無理なく増大
させることができ、従来と同一の照明光度を維持するの
であれば光ファイバ束の径をより小さくできるようにな
る。また、組立作業を簡単化できることから、コストダ
ウンも可能になる。Further, a light introduction end of an optical fiber is inserted into a fiber insertion hole provided in the LED, and light emitted from the LED is derived from a light extraction end of the optical fiber and used for illumination. With the lighting device described above, the advantages described above can be effectively utilized. In other words, when a large number of optical fibers are bundled into an optical fiber bundle, and light is led out from the light lead-out end of the optical fiber bundle and illuminated, if the optical fiber bundle has the same diameter as the conventional one, the illumination luminosity Can be increased without difficulty, and the diameter of the optical fiber bundle can be made smaller if the same illumination luminous intensity is maintained as before. Further, since the assembling work can be simplified, the cost can be reduced.
【００２３】ＬＥＤ素子の発光面と光ファイバの光導入
端との間に、ＬＥＤ素子から射出される光を屈曲させる
光屈折部を配設してなるものであれば、狭窄型のＬＥＤ
が点発光源とみなせることを有効に利用して、より効率
的にＬＥＤ射出光を光ファイバ内に導くことができる。
点発光であれば、ＬＥＤ素子から射出される光の大半
を、例えば凸レンズのような簡単な構成の光屈折部で、
非常に細径の平行光とすることができ、ファイバ内部に
導入される光量を増大させることができるからである。
この場合に光屈折部はできるだけＬＥＤ素子の発光面に
近接させることが光量ロスを軽減する上で好ましい。If a light refracting portion for bending light emitted from the LED element is disposed between the light emitting surface of the LED element and the light introducing end of the optical fiber, a constriction type LED is used.
Can be considered as a point emission source, and the LED emission light can be more efficiently guided into the optical fiber.
In the case of point emission, most of the light emitted from the LED element is, for example, a light refraction unit having a simple configuration such as a convex lens,
This is because parallel light having a very small diameter can be obtained, and the amount of light introduced into the fiber can be increased.
In this case, it is preferable to make the light refracting portion as close as possible to the light emitting surface of the LED element in order to reduce the light amount loss.
【００２４】光屈折部が、ファイバ挿入穴の底面を凸状
に膨出させてなるものであれば、光屈折部を、専用のレ
ンズ等を用いることなく簡単に形成することができ、ま
た、光屈折部をＬＥＤ素子の発光面に可及的に近づける
ことが容易にできる。さらに、コスト的にも有利である
という効果も奏する。If the light refracting portion is formed by bulging the bottom surface of the fiber insertion hole into a convex shape, the light refracting portion can be easily formed without using a dedicated lens or the like. The light refracting portion can be easily brought as close as possible to the light emitting surface of the LED element. Further, there is an effect that it is advantageous in terms of cost.
【図１】本発明の一実施例を示す照明装置の概略的全体
斜視図。FIG. 1 is a schematic overall perspective view of a lighting device showing an embodiment of the present invention.
【図２】同実施例の光源の一部を示す概略的部分斜視
図。FIG. 2 is a schematic partial perspective view showing a part of the light source of the embodiment.
【図３】同実施例のＬＥＤを示す縦断面図。FIG. 3 is a longitudinal sectional view showing the LED of the embodiment.
【図４】同実施例のＬＥＤに光ファイバを取り付けた状
態を示す縦断面図。FIG. 4 is a longitudinal sectional view showing a state where an optical fiber is attached to the LED of the embodiment.
【図５】変形例を示すＬＥＤの図３に対応する縦断面
図。FIG. 5 is a longitudinal sectional view corresponding to FIG. 3 of an LED showing a modified example.
【図６】同変形例のＬＥＤに光ファイバを取り付けた状
態を示す縦断面図。FIG. 6 is a longitudinal sectional view showing a state in which an optical fiber is attached to the LED of the modification.
【図７】他の変形例におけるＬＥＤの縦断面図。FIG. 7 is a longitudinal sectional view of an LED according to another modification.
【図８】狭窄型のＬＥＤ素子の構造を示す構造説明図。FIG. 8 is a structural explanatory view showing the structure of a constriction type LED element.
【図９】狭窄型のＬＥＤ素子を示す概略斜視図。FIG. 9 is a schematic perspective view showing a constriction type LED element.
１…ＬＥＤ ２…ＬＥＤ素子 ２１…発光面 ３…透明体 ４…光ファイバ ４１…光導入端 ４２…光導出端 ５…ファイバ挿入穴 ５１…底面 ６…光屈折部 ７…基板（プリント基板） DESCRIPTION OF SYMBOLS 1 ... LED 2 ... LED element 21 ... Light emitting surface 3 ... Transparent body 4 ... Optical fiber 41 ... Light introduction end 42 ... Light extraction end 5 ... Fiber insertion hole 51 ... Bottom 6 ... Light refraction part 7 ... Substrate (printed circuit board)
─────────────────────────────────────────────────────
────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成１１年１２月２７日（１９９９．１２．
２７）[Submission date] December 27, 1999 (1999.12.
27)
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】請求項１[Correction target item name] Claim 1
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【手続補正２】[Procedure amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００８[Correction target item name] 0008
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００８】[0008]
【発明の実施の形態】すなわち、本発明に係るＬＥＤ
は、層構造をなし発光面を有したＬＥＤ素子を、透明体
内に封入してなるものであって、前記ＬＥＤ素子に、前
記発光面の略一点が発光する狭窄型のものを用いるとと
もに、前記透明体内に光ファイバを挿入可能なファイバ
挿入穴を、その底面がＬＥＤ素子の発光面に近接するよ
うに設けたことを特徴とする。DESCRIPTION OF THE PREFERRED EMBODIMENTS That is, the LED according to the present invention
Is formed by enclosing an LED element having a light emitting surface having a layer structure in a transparent body, and using a constricted type in which substantially one point of the light emitting surface emits light, A fiber insertion hole into which an optical fiber can be inserted into the transparent body is provided so that a bottom surface thereof is close to a light emitting surface of the LED element.
Claims (5)
設してなるものであって、前記ＬＥＤ素子に、前記発光
面の略一点が発光する狭窄型のものを用いるとともに、
前記透明体に、光ファイバを挿入可能なファイバ挿入穴
を、その底面がＬＥＤ素子の発光面に近接するように設
けたことを特徴とするＬＥＤ。1. An LED device having a light emitting surface embedded in a transparent body, wherein the LED device is of a constricted type in which substantially one point of the light emitting surface emits light.
An LED, wherein the transparent body is provided with a fiber insertion hole into which an optical fiber can be inserted so that a bottom surface thereof is close to a light emitting surface of the LED element.
バ挿入穴に光ファイバの光導入端を挿入し、該ＬＥＤか
ら射出される光を前記光ファイバの光導出端から導出し
て照明に利用するようにしたことを特徴とする照明装
置。2. The light introducing end of an optical fiber is inserted into a fiber insertion hole provided in the LED according to claim 1, and light emitted from the LED is led out from a light extracting end of the optical fiber to be used for illumination. A lighting device characterized by being used.
端との間に、ＬＥＤ素子から射出される光を屈折させる
光屈折部を設けてなることを特徴とする請求項２記載の
照明装置。3. The lighting device according to claim 2, wherein a light refracting portion for refracting light emitted from the LED element is provided between the light emitting surface of the LED element and the light introducing end of the optical fiber. apparatus.
に膨出した曲面状に形成してなるものであることを特徴
とする請求項３記載の照明装置。4. The lighting device according to claim 3, wherein the light refracting portion is formed by forming a bottom surface of the fiber insertion hole into a curved surface protruding in a convex shape.
Ｄにそれぞれ光ファイバを配設していることを特徴とす
る請求項２、３または４記載の照明装置。5. A plurality of LEDs are spread on a substrate, and each LE is
The lighting device according to claim 2, wherein an optical fiber is provided in each of D. 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32014598A JP3149401B2 (en) | 1998-11-11 | 1998-11-11 | LED and lighting device using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32014598A JP3149401B2 (en) | 1998-11-11 | 1998-11-11 | LED and lighting device using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000149608A true JP2000149608A (en) | 2000-05-30 |
| JP3149401B2 JP3149401B2 (en) | 2001-03-26 |
Family
ID=18118220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32014598A Expired - Fee Related JP3149401B2 (en) | 1998-11-11 | 1998-11-11 | LED and lighting device using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3149401B2 (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004166511A (en) * | 2002-11-15 | 2004-06-17 | Ccs Inc | False sunlight irradiation apparatus |
| JP2005504411A (en) * | 2001-09-17 | 2005-02-10 | カラー・キネティックス・インコーポレーテッド | Products based on light-emitting diodes |
| JP2005071870A (en) * | 2003-08-26 | 2005-03-17 | Sumitomo Electric Ind Ltd | Light distribution unit, lighting unit, and lighting system |
| WO2005088191A1 (en) * | 2004-03-11 | 2005-09-22 | Moriyama Sangyo Kabushiki Kaisha | Socket device |
| JP2006313754A (en) * | 2006-06-12 | 2006-11-16 | Sumitomo Electric Ind Ltd | Light distribution unit, illumination unit, and illumination system |
| US7360934B2 (en) | 2005-10-24 | 2008-04-22 | Sumitomo Electric Industries, Ltd. | Light supply unit, illumination unit, and illumination system |
| JP2008311050A (en) * | 2007-06-14 | 2008-12-25 | Rohm Co Ltd | Lighting device |
| JP2009016359A (en) * | 2008-10-06 | 2009-01-22 | Citizen Electronics Co Ltd | Support unit of light guide plate |
| JP2009517813A (en) * | 2005-11-28 | 2009-04-30 | マグナ インターナショナル インコーポレイテッド | Semiconductor-based lighting systems and components for automotive lighting systems |
| US7652436B2 (en) | 2000-09-27 | 2010-01-26 | Philips Solid-State Lighting Solutions, Inc. | Methods and systems for illuminating household products |
| US7959320B2 (en) | 1999-11-18 | 2011-06-14 | Philips Solid-State Lighting Solutions, Inc. | Methods and apparatus for generating and modulating white light illumination conditions |
| JP2011253102A (en) * | 2010-06-03 | 2011-12-15 | U-Technology Co Ltd | Optical fiber illumination device |
| JP2013506230A (en) * | 2009-07-29 | 2013-02-21 | ジュン キム，ヒュク | LED concentrator using multi-optical cable |
| JP2017059441A (en) * | 2015-09-17 | 2017-03-23 | 東芝ライテック株式会社 | Lamp device |
| JP2020023012A (en) * | 2018-08-07 | 2020-02-13 | Ｎｅｃプラットフォームズ株式会社 | Tweezers and method for controlling amount of light emitted from illuminant thereof |
| WO2021149513A1 (en) | 2020-01-22 | 2021-07-29 | 株式会社ニフコ | Led lighting device |
| IT202100029882A1 (en) | 2021-11-25 | 2023-05-25 | Hsl S R L A Socio Unico | Modular light source assembly |
-
1998
- 1998-11-11 JP JP32014598A patent/JP3149401B2/en not_active Expired - Fee Related
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7959320B2 (en) | 1999-11-18 | 2011-06-14 | Philips Solid-State Lighting Solutions, Inc. | Methods and apparatus for generating and modulating white light illumination conditions |
| US7652436B2 (en) | 2000-09-27 | 2010-01-26 | Philips Solid-State Lighting Solutions, Inc. | Methods and systems for illuminating household products |
| JP2009187951A (en) * | 2001-09-17 | 2009-08-20 | Philips Solid-State Lighting Solutions Inc | Light-emitting diode based products |
| JP2005504411A (en) * | 2001-09-17 | 2005-02-10 | カラー・キネティックス・インコーポレーテッド | Products based on light-emitting diodes |
| JP2004166511A (en) * | 2002-11-15 | 2004-06-17 | Ccs Inc | False sunlight irradiation apparatus |
| JP2005071870A (en) * | 2003-08-26 | 2005-03-17 | Sumitomo Electric Ind Ltd | Light distribution unit, lighting unit, and lighting system |
| WO2005088191A1 (en) * | 2004-03-11 | 2005-09-22 | Moriyama Sangyo Kabushiki Kaisha | Socket device |
| US7628523B2 (en) | 2005-10-24 | 2009-12-08 | Sumitomo Electric Industries, Ltd. | Light supply unit, illumination unit, and illumination system |
| US7360934B2 (en) | 2005-10-24 | 2008-04-22 | Sumitomo Electric Industries, Ltd. | Light supply unit, illumination unit, and illumination system |
| JP2009517813A (en) * | 2005-11-28 | 2009-04-30 | マグナ インターナショナル インコーポレイテッド | Semiconductor-based lighting systems and components for automotive lighting systems |
| EP1954981B1 (en) * | 2005-11-28 | 2016-09-28 | Magna International Inc. | Semiconductor-based lighting systems and lighting system components for automotive use |
| JP2006313754A (en) * | 2006-06-12 | 2006-11-16 | Sumitomo Electric Ind Ltd | Light distribution unit, illumination unit, and illumination system |
| JP2008311050A (en) * | 2007-06-14 | 2008-12-25 | Rohm Co Ltd | Lighting device |
| JP2009016359A (en) * | 2008-10-06 | 2009-01-22 | Citizen Electronics Co Ltd | Support unit of light guide plate |
| JP2013506230A (en) * | 2009-07-29 | 2013-02-21 | ジュン キム，ヒュク | LED concentrator using multi-optical cable |
| JP2011253102A (en) * | 2010-06-03 | 2011-12-15 | U-Technology Co Ltd | Optical fiber illumination device |
| JP2017059441A (en) * | 2015-09-17 | 2017-03-23 | 東芝ライテック株式会社 | Lamp device |
| JP2020023012A (en) * | 2018-08-07 | 2020-02-13 | Ｎｅｃプラットフォームズ株式会社 | Tweezers and method for controlling amount of light emitted from illuminant thereof |
| WO2021149513A1 (en) | 2020-01-22 | 2021-07-29 | 株式会社ニフコ | Led lighting device |
| US11913615B2 (en) | 2020-01-22 | 2024-02-27 | Nifco Inc. | LED lighting device |
| IT202100029882A1 (en) | 2021-11-25 | 2023-05-25 | Hsl S R L A Socio Unico | Modular light source assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3149401B2 (en) | 2001-03-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2000149608A (en) | Led and lighting system using the same | |
| KR101168429B1 (en) | LED light source | |
| JP4838580B2 (en) | LED bulb | |
| US4630180A (en) | Light emitting diode array | |
| EP2202458B1 (en) | Light emitting device | |
| US6595674B1 (en) | Lighting device for surface inspection | |
| US5404277A (en) | Apparatus for backlighting LCD | |
| JPH02215171A (en) | Light emitting element array light source | |
| JP2007073968A (en) | Thin light source using flexible circuit support | |
| US20160281956A1 (en) | Spread light lens and led strip lights having same | |
| JP5018748B2 (en) | Contact image sensor | |
| JP2006162654A (en) | Optical device and lighting equipment | |
| JP2001118411A (en) | Lamp for vehicle | |
| JP2003157710A (en) | Light source for light guide | |
| JPH06174497A (en) | Light emitting diode array, and lighting system | |
| JP2004247312A (en) | Light source device | |
| JP2006073250A (en) | Lighting system | |
| JP2001213322A (en) | Signal lamp for railway | |
| JP3554318B2 (en) | Light source device and light irradiation unit | |
| JPH08160876A (en) | Display device | |
| JP2004212402A (en) | Light irradiation device | |
| JP2019033092A (en) | Illumination lamp, lighting device, and manufacturing method of illumination lamp | |
| JPH06224474A (en) | Surface light emitting display device | |
| JPH03257728A (en) | Luminescence configuration for push type panel switch | |
| JPH1022528A (en) | Led back light |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130119 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130119 Year of fee payment: 12 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313114 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130119 Year of fee payment: 12 |
|
| R360 | Written notification for declining of transfer of rights |
Free format text: JAPANESE INTERMEDIATE CODE: R360 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130119 Year of fee payment: 12 |
|
| R370 | Written measure of declining of transfer procedure |
Free format text: JAPANESE INTERMEDIATE CODE: R370 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130119 Year of fee payment: 12 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313114 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130119 Year of fee payment: 12 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130119 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140119 Year of fee payment: 13 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140119 Year of fee payment: 13 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313117 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140119 Year of fee payment: 13 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| LAPS | Cancellation because of no payment of annual fees |