JP2001036149A - Light source device - Google Patents
Light source deviceInfo
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- JP2001036149A JP2001036149A JP20990399A JP20990399A JP2001036149A JP 2001036149 A JP2001036149 A JP 2001036149A JP 20990399 A JP20990399 A JP 20990399A JP 20990399 A JP20990399 A JP 20990399A JP 2001036149 A JP2001036149 A JP 2001036149A
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- light
- liquid
- emitting element
- light emitting
- source device
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は発光ダイオードのよ
うな固体発光素子を用いた照明用の光源装置に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light source device for lighting using a solid state light emitting device such as a light emitting diode.
【０００２】[0002]
【従来の技術】通常の発光ダイオード（ＬＥＤ）は、金
属製リードフレーム上に実装されており、発光素子の実
装部分をエポキシ樹脂にて埋め込んだ構造になってい
る。表面実装用のＬＥＤも、セラミックまたはエポキシ
べースの配線基板に実装し、エポキシ樹脂や射出成形用
の樹脂で覆われている。2. Description of the Related Art An ordinary light emitting diode (LED) is mounted on a metal lead frame, and has a structure in which a mounting portion of a light emitting element is embedded with epoxy resin. The LED for surface mounting is also mounted on a ceramic or epoxy-based wiring board and covered with epoxy resin or resin for injection molding.
【０００３】ＬＥＤ素子は赤色、即ち光子のエネルギー
が小さいものから実用化されてきた。光子のエネルギー
が小さいときには、エポキシ樹脂の光化学反応による劣
化は問題にならなかった。しかし、近年、青色に発光す
るＬＥＤ素子が開発され、その光子が大きなエネルギー
を持つため、光化学反応が促進され、エポキシ樹脂が変
質、着色し、外部量子効率が下がるという問題が生じて
いる。ここで言う外部量子効率とは、ＬＥＤ素子内部で
発生した光が、ＬＥＤ素子外部へ効率よく取り出され、
それが、更に、液体や樹脂などのレンズといった透光性
材料を透過して、外部へどれだけ損失なく取り出せるか
ということである。[0003] LED elements have been put into practical use from the red, that is, those having small photon energy. When the energy of the photons was small, the degradation of the epoxy resin due to the photochemical reaction was not a problem. However, in recent years, an LED element that emits blue light has been developed, and the photon has a large energy, so that a photochemical reaction is promoted, and there is a problem that the epoxy resin is altered and colored, and the external quantum efficiency is reduced. The external quantum efficiency referred to here means that light generated inside the LED element is efficiently extracted outside the LED element,
That is how much light can pass through a light-transmitting material such as a lens such as a liquid or a resin and be taken out to the outside without any loss.
【０００４】また、ＬＥＤ素子は点光源に近いが、素子
からは略全方位に向けて光が放射されるので、反射鏡や
レンズを用いて、所望の照射角度を得るような構造が採
られてきた。所望の方向へ放射される光の割合を高めよ
うとすると、レンズの直径を大きくしなくてはならな
い。また、照射角度を絞ろうとすると、レンズの曲率を
大きくしなくてはならない。その結果、ＬＥＤ素子自体
は１ｍｍにも満たない非常に小さなものであるにもかか
わらず、高効率、狭照射角度を狙ったＬＥＤランプは５
〜１０ｍｍといった大きなサイズにならざるを得ない。[0004] Further, although the LED element is close to a point light source, light is emitted from the element in almost all directions. Therefore, a structure is employed in which a desired illumination angle is obtained using a reflector or a lens. Have been. In order to increase the proportion of light emitted in the desired direction, the diameter of the lens must be increased. Also, in order to narrow the irradiation angle, the curvature of the lens must be increased. As a result, despite the fact that the LED element itself is very small, less than 1 mm, the LED lamp aiming at a high efficiency and a narrow irradiation angle is 5
It has to be as large as 10 to 10 mm.
【０００５】[0005]
【発明が解決しようとする課題】上記課題のうち、光に
よる劣化の問題は、ＬＥＤ素子を液体に浸漬することに
よって解決される。しかしながら、レンズ形状にかかる
問題に関しては、依然、同様の問題を抱えている。そこ
で、本発明は液体に浸漬したＬＥＤ素子を用いたランプ
モジュールにおいて、所望の配光特性を得ることがで
き、しかも、外部量子効率が高い構造を提供することを
課題とする。Among the above-mentioned problems, the problem of deterioration due to light is solved by immersing the LED element in a liquid. However, there is still a similar problem regarding the problem relating to the lens shape. Therefore, an object of the present invention is to provide a lamp module using an LED element immersed in a liquid, which can provide desired light distribution characteristics and has a high external quantum efficiency.
【０００６】[0006]
【課題を解決するための手段】本発明にあっては、上記
の課題を解決するために、発光素子が絶縁性かつ不活性
で透光性を有する流動性液体に浸漬されたランプモジュ
ールにおいて、モジュールの透光性筐体の封入液体と接
する部分が曲面となっていることを特徴とするものであ
る。すなわち、発光素子が液体に浸漬されたランプモジ
ュールでは、封入する液体と、透光性筐体の間には、通
常、屈折率の違いがある。そこで、透光性筐体と液体の
境界が発光素子を中心とした円弧に近くなるような形状
にする。これによって、大部分の光は境界を、境界面に
対して垂直に横切ることとなり、反射や屈折による損失
が生じにくくなる。また、屈折率の違いを積極的に利用
して、レンズ構造を作れば、所望の配光特性を有する光
源装置をコンパクトに実現することができる。さらに、
発光素子と液体、液体と透光性筐体の屈折率の違いによ
る光の損失を減少させるために、反射防止膜を発光素子
又は透光性筐体の何れか又は両方に設けることが好まし
い。According to the present invention, there is provided a lamp module in which a light emitting element is immersed in a fluid liquid having an insulating property, an inert property and a light transmitting property. The module is characterized in that a portion of the translucent casing that comes into contact with the sealed liquid has a curved surface. That is, in a lamp module in which a light emitting element is immersed in a liquid, there is usually a difference in the refractive index between the liquid to be sealed and the translucent casing. Therefore, the shape is such that the boundary between the translucent casing and the liquid is close to an arc centered on the light emitting element. As a result, most of the light crosses the boundary perpendicularly to the boundary surface, so that loss due to reflection and refraction hardly occurs. Further, if the lens structure is made by positively utilizing the difference in the refractive index, a light source device having desired light distribution characteristics can be realized compactly. further,
In order to reduce light loss due to a difference in refractive index between the light-emitting element and the liquid, or between the liquid and the light-transmitting housing, it is preferable to provide an antireflection film on one or both of the light-emitting element and the light-transmitting housing.
【０００７】[0007]
【発明の実施の形態】（実施例１）図１は本発明の実施
例１の要部断面図である。図中、１は発光素子、２は基
板、３は透光性材料で出来た筐体、４は液体である。発
光素子１は基板２に設けられた凹部に実装されており、
その基板２に透光性材料で出来た筐体３が密着して接着
されている。基板２と透光性材料で出来た筐体３の間に
生じる空隙、即ち、発光素子１が実装されている部分は
液体４で満たされている。透光性材料で出来た筐体３
は、所望の配光特性を得るために所定の曲率を持ってお
り、レンズになっている。筐体３を構成する透光性材料
として樹脂を用いた場合、例えばエポキシ系では、屈折
率が１．４〜１．５である。液体４は、絶縁性、不活
性、透光性、流動性を有している。例えば、フッ素系不
活性液体（商品名：フロリナート）を用いた場合、その
屈折率は１．２〜１．３である。両者の屈折率の差によ
る屈折や反射を抑制するために、透光性筐体３と液体４
との界面部分の形状は球面にする。この球面は、中心が
発光素子１の位置となるのが最も良い。しかし、屈折率
が極端に大きく変わらないので、曲率は大き目でも効果
は得られる。(Embodiment 1) FIG. 1 is a sectional view of a main part of Embodiment 1 of the present invention. In the figure, 1 is a light emitting element, 2 is a substrate, 3 is a housing made of a translucent material, and 4 is a liquid. The light emitting element 1 is mounted in a concave portion provided in the substrate 2,
A housing 3 made of a translucent material is adhered to the substrate 2 in close contact. A gap formed between the substrate 2 and the housing 3 made of a light-transmitting material, that is, a portion where the light emitting element 1 is mounted is filled with the liquid 4. Case 3 made of translucent material
Has a predetermined curvature in order to obtain a desired light distribution characteristic, and is a lens. In the case where a resin is used as the light-transmitting material forming the housing 3, for example, an epoxy-based resin has a refractive index of 1.4 to 1.5. The liquid 4 has insulating properties, inertness, translucency, and fluidity. For example, when a fluorine-based inert liquid (trade name: Fluorinert) is used, its refractive index is 1.2 to 1.3. In order to suppress refraction and reflection due to the difference between the two refractive indices, the translucent casing 3 and the liquid 4
The shape of the interface portion with is spherical. It is best that the center of the spherical surface is the position of the light emitting element 1. However, since the refractive index does not change significantly, the effect can be obtained even if the curvature is large.
【０００８】ここでは、発光素子１が実装されている基
板２に凹部が設けられている場合を例示したが、凹部の
代わりに、穴の空いた枠が基板に載せられているような
構造でもよい。なお、レンズを構成する透光性筐体３
が、実際に筐体の（物理的強度に関する）構造的な要素
である必要はなく、単に光学的部材としての機能のみを
有しており、筐体が別に存在していても構わない。しか
しながら、モジュール全体のサイズを小さく収めようと
するならば、この光学的な部材を構造的な用途と兼ねる
のが好ましく、一般的である。Here, a case where a concave portion is provided in the substrate 2 on which the light emitting element 1 is mounted has been illustrated, but a structure in which a holed frame is placed on the substrate instead of the concave portion may be used. Good. In addition, the translucent casing 3 constituting the lens
However, there is no need to actually be a structural element (related to physical strength) of the housing, and the housing only has a function as an optical member, and the housing may be provided separately. However, if the overall size of the module is to be kept small, it is preferable and common to use this optical member for structural purposes.
【０００９】（実施例２）図２は本発明の実施例２の要
部断面図である。上述の実施例１では、基板２に凹部を
設けたり、穴の空いた枠を被せて、これを反射板とし、
発光素子１から出た光を一旦、上向きにしたのちに、レ
ンズ３に入射させていた。一方、図２に示す本実施例で
は、加工する部材数が少ないことに特徴が有る。即ち、
基板２に被せる枠も必要が無いし、基板２に特殊な加工
を施す必要も無い。加工するのはレンズ部分だけで済
む。すなわち、レンズ３の下部を基板２の近傍まで伸ば
し、発光素子１を中心とした半球状の隙間を設け、そこ
に発光素子１が収まるようにする。ここで、半球状にす
るのは、発光素子１から放出された光が、レンズ３と液
体４の境界面を出来るだけ垂直に通過するようにするた
めである。液体４に出来るだけ粘度の低いものを用いれ
ば、レンズ３と基板２の間隙が狭くとも液体４は適度に
行き来するので、発光素子１の冷却に支障はない。(Embodiment 2) FIG. 2 is a sectional view of a main part of Embodiment 2 of the present invention. In the first embodiment described above, a concave portion is provided on the substrate 2 or a frame with a hole is covered thereon, and this is used as a reflection plate.
The light emitted from the light emitting element 1 is once directed upward and then incident on the lens 3. On the other hand, the present embodiment shown in FIG. 2 is characterized in that the number of members to be processed is small. That is,
There is no need to provide a frame to cover the substrate 2, nor is it necessary to apply special processing to the substrate 2. Only the lens part needs to be processed. That is, the lower part of the lens 3 is extended to the vicinity of the substrate 2, and a hemispherical gap centering on the light emitting element 1 is provided so that the light emitting element 1 can be accommodated therein. Here, the semi-spherical shape is used so that the light emitted from the light emitting element 1 passes through the boundary surface between the lens 3 and the liquid 4 as perpendicularly as possible. If a liquid having a viscosity as low as possible is used, the liquid 4 moves back and forth appropriately even if the gap between the lens 3 and the substrate 2 is narrow, so that there is no problem in cooling the light emitting element 1.
【００１０】（実施例３）図３は本発明の実施例３の要
部断面図である。上述の実施例２で、粘性が十分に低い
液体を用いることが出来ない場合、或いは、冷却効率を
更に高める必要のある場合には、基板２に発光素子１の
底面積と同じくらいの小さな凸部を設け、その凸部に発
光素子１を実装する。通常のＬＥＤ素子は、発光層の下
部に反射層が設けられており、斜め下方向への光の放射
割合は非常に少ない。従って、このような構造を用いれ
ば、レンズ３へ入射する光を減らすこと無く、基板２と
レンズ３の間隙を広げ、液体４の行き来を良くすること
ができる。(Embodiment 3) FIG. 3 is a sectional view of a main part of Embodiment 3 of the present invention. In the above-described second embodiment, when a liquid having a sufficiently low viscosity cannot be used, or when it is necessary to further increase the cooling efficiency, the substrate 2 has a small protrusion as small as the bottom area of the light emitting element 1. The light emitting element 1 is mounted on the convex portion. In a normal LED element, a reflection layer is provided below a light-emitting layer, and the ratio of light emitted obliquely downward is very small. Therefore, if such a structure is used, the gap between the substrate 2 and the lens 3 can be widened and the flow of the liquid 4 can be improved without reducing the light incident on the lens 3.
【００１１】ここでいう、通常のＬＥＤ素子とは、現段
階では、ＧａＡｓ基板を用いたＬＥＤ素子のことであ
る。しかしながら、ＧａＰやサファイアなどの透明基板
を用いたＬＥＤ素子でも、発光層よりも下部になんらか
の反射構造が設けられていれば、本実施例のような構成
に用いることが可能である。Here, the ordinary LED device is an LED device using a GaAs substrate at the present stage. However, even an LED element using a transparent substrate such as GaP or sapphire can be used in the configuration as in this embodiment as long as some reflection structure is provided below the light emitting layer.
【００１２】（実施例４）図４は本発明の実施例４の要
部断面図である。上述の実施例２及び３において、液体
４とレンズ３の材質の屈折率の差が適度に大きければ、
レンズ３に入射した光は、再び液体４へ抜けることな
く、外部へ放射される。しかしながら、レンズ３の屈折
率が不十分な場合には、再び、液体４内に放射されるも
のの割合が多くなる。この場合、発光素子１を囲繞する
半球の部分以外のレンズ３と液体４が接している面に反
射膜５（反射板）を設けることが有効である。この反射
板は、レンズ部の外側から、アルミ皮膜などを蒸着すれ
ばよい。(Embodiment 4) FIG. 4 is a sectional view showing a main part of Embodiment 4 of the present invention. In the above Examples 2 and 3, if the difference between the refractive indices of the liquid 4 and the material of the lens 3 is appropriately large,
The light that has entered the lens 3 is radiated to the outside without passing through the liquid 4 again. However, when the refractive index of the lens 3 is insufficient, the ratio of the light radiated into the liquid 4 increases again. In this case, it is effective to provide a reflection film 5 (reflection plate) on the surface where the liquid 4 is in contact with the lens 3 other than the hemispherical portion surrounding the light emitting element 1. This reflector may be formed by depositing an aluminum film or the like from the outside of the lens unit.
【００１３】（実施例５）図５は本発明の実施例５の要
部断面図である。上述の実施例１でレンズ３より屈折率
の小さい液体４を用いて、レンズ３を液体側に凸にすれ
ば、表面が平らで、かつ集光性を持った光源装置を得る
ことが出来る。(Embodiment 5) FIG. 5 is a sectional view of a main part of Embodiment 5 of the present invention. By using the liquid 4 having a smaller refractive index than the lens 3 in the first embodiment and making the lens 3 convex toward the liquid side, it is possible to obtain a light source device having a flat surface and a light collecting property.
【００１４】（実施例６）図６は本発明の実施例６の要
部断面図である。本実施例は上述の実施例５とは反対
に、レンズ３より屈折率の大きな液体４を用いて、レン
ズ３を液体４側に凹にする。このようにすれば、表面が
平らで、かつ、集光性を持った光源装置を得ることが出
来る。(Embodiment 6) FIG. 6 is a sectional view of a main part of Embodiment 6 of the present invention. In the present embodiment, contrary to the above-described fifth embodiment, the lens 3 is concave toward the liquid 4 by using the liquid 4 having a larger refractive index than the lens 3. In this way, a light source device having a flat surface and a light collecting property can be obtained.
【００１５】（実施例７）本実施例は上述の実施例１の
構造で、レンズ３の液体４に接する部分に、反射防止膜
を設けたものである（請求項５）。単層の反射防止膜
は、屈折率の違いの平方根の屈折率を持ち、その厚さ
が、波長の４分の１のものを用いる必要がある。これに
丁度、該当するものは無いが、ガラスレンズの反射防止
膜などでも、多少の違いは無視して使用されている。こ
こでも、ＭｇＦ2 の膜を用いて、約５％の効果を得るこ
とが出来ている。(Embodiment 7) In this embodiment, an anti-reflection film is provided on a portion of the lens 3 which is in contact with the liquid 4 in the structure of the above-mentioned Embodiment 1. It is necessary to use a single-layer antireflection film having a refractive index of the square root of the difference in the refractive index and having a thickness of a quarter of the wavelength. There is no such thing, but the antireflection film of the glass lens is used ignoring some differences. Also in this case, about 5% of the effect can be obtained by using the MgF 2 film.
【００１６】（実施例８）本実施例は上述の実施例１の
構造で、発光素子の部分に、反射防止膜を設けたもので
ある（請求項６）。ＬＥＤ素子は屈折率が３〜４と非常
に大きい。液体の屈折率との関係から、反射防止膜の適
切な屈折率は２〜３である。この条件に当てはまるもの
の例を表１に示す。例えば２酸化チタンを用いた場合、
約６％の効率改善がなされる。(Embodiment 8) In this embodiment, the structure of the above-mentioned Embodiment 1 is provided, and an antireflection film is provided on the light emitting element portion (Claim 6). The LED element has a very large refractive index of 3 to 4. From the relationship with the refractive index of the liquid, the appropriate refractive index of the antireflection film is 2-3. Table 1 shows an example of a case that satisfies this condition. For example, when using titanium dioxide,
An efficiency improvement of about 6% is made.
【表１】 [Table 1]
【００１７】（実施例９）本実施例は上述の実施例１の
構造で、レンズ部分にガラスを用いたものである（請求
項７）。従来の樹脂を用いたものでは、外界からの紫外
線照射、水分の浸入などによって、劣化が引き起こされ
た。本実施例によれば、耐環境性能に優れたランプモジ
ュールを提供することができる。更に、ＴａＳＦなどの
ような高屈折率ガラス（屈折率２）を用いれば、更にレ
ンズをコンパクトにすることが可能である。(Embodiment 9) This embodiment has the same structure as that of Embodiment 1 described above, except that glass is used for the lens portion. In the case of using a conventional resin, deterioration was caused by ultraviolet irradiation from the outside, intrusion of moisture, and the like. According to the present embodiment, a lamp module having excellent environmental resistance performance can be provided. Furthermore, if a high refractive index glass (refractive index 2) such as TaSF is used, the lens can be made more compact.
【００１８】[0018]
【発明の効果】本発明によれば、絶縁性かつ不活性で透
光性を有する液体に発光素子を浸漬することで、発光素
子の発熱が抑えられ、効率が高くなるとともに、発光素
子の光学的効率が向上し、その結果、全体としての効率
が大幅に向上した。また、モジュールの透光性筐体の封
入液体と接する部分が曲面となっていることにより、所
望の配光特性を得るための集光レンズをコンパクトに形
成できる。According to the present invention, by immersing a light-emitting element in an insulating, inert, and translucent liquid, heat generation of the light-emitting element can be suppressed, efficiency can be increased, and optical efficiency of the light-emitting element can be improved. The overall efficiency has been improved, and as a result, the overall efficiency has been greatly improved. Further, since the portion of the translucent casing of the module that comes into contact with the sealed liquid has a curved surface, a condensing lens for obtaining desired light distribution characteristics can be formed compactly.
【図１】本発明の実施例１の要部断面図である。FIG. 1 is a sectional view of a main part of a first embodiment of the present invention.
【図２】本発明の実施例２の要部断面図である。FIG. 2 is a sectional view of a main part of a second embodiment of the present invention.
【図３】本発明の実施例３の要部断面図である。FIG. 3 is a sectional view of a main part of a third embodiment of the present invention.
【図４】本発明の実施例４の要部断面図である。FIG. 4 is a sectional view of a main part of a fourth embodiment of the present invention.
【図５】本発明の実施例５の要部断面図である。FIG. 5 is a sectional view of a main part of a fifth embodiment of the present invention.
【図６】本発明の実施例６の要部断面図である。FIG. 6 is a sectional view of a main part of a sixth embodiment of the present invention.
１ 発光素子 ２ 基板 ３ 透光性筐体（レンズ） ４ 液体 DESCRIPTION OF SYMBOLS 1 Light emitting element 2 Substrate 3 Translucent case (lens) 4 Liquid
───────────────────────────────────────────────────── フロントページの続き (72)発明者 木村 秀吉 大阪府門真市大字門真1048番地 松下電工 株式会社内 (72)発明者 橋爪 二郎 大阪府門真市大字門真1048番地 松下電工 株式会社内 Ｆターム(参考） 5F041 AA03 AA06 AA33 DA20 DA74 DA77 DA81 EE23 EE25 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hideyoshi Kimura 1048 Okadoma Kadoma, Osaka Pref.Matsushita Electric Works, Ltd. Reference) 5F041 AA03 AA06 AA33 DA20 DA74 DA77 DA81 EE23 EE25
Claims (7)
を有する液体に浸漬されたランプモジュールにおいて、
モジュールの透光性筐体の封入液体と接する部分が曲面
となっていることを特徴とする光源装置。1. A lamp module in which a light emitting element is immersed in a liquid having an insulating property, an inert property and a light transmitting property.
A light source device, characterized in that a portion of the translucent housing of the module that comes into contact with the sealed liquid has a curved surface.
子を囲繞する形状であることを特徴とする光源装置。2. The light source device according to claim 1, wherein the curved portion has a shape surrounding the light emitting element.
分が曲面部分の内側へ突き出していることを特徴とする
光源装置。3. The light source device according to claim 2, wherein a mounting portion of the light emitting element protrudes inside the curved surface portion.
筐体と屈折率の異なる液体を用いたことを特徴とする光
源装置。4. The light source device according to claim 1, wherein a liquid having a refractive index different from that of the light-transmitting casing is used as the sealed liquid.
を有する液体に浸漬されたランプモジュールにおいて、
モジュールの透光性筐体の封入液体と接する部分に反射
防止膜を設けたことを特徴とする光源装置。5. A lamp module in which a light emitting element is immersed in a liquid having an insulating property, an inert property and a light transmitting property.
A light source device, wherein an anti-reflection film is provided on a portion of the light-transmitting casing of the module that comes into contact with the sealed liquid.
を有する液体に浸漬されたランプモジュールにおいて、
発光素子の表面に反射防止膜を設けたことを特徴とする
光源装置。6. A lamp module in which a light-emitting element is immersed in a liquid having an insulating property, an inert property and a light-transmitting property.
A light source device comprising an antireflection film provided on a surface of a light emitting element.
を有する液体に浸漬されたランプモジュールにおいて、
モジュールの透光性筐体にガラスを用いたことを特徴と
する光源装置。7. A lamp module in which a light emitting element is immersed in a liquid having an insulating property, an inert property and a light transmitting property,
A light source device characterized in that glass is used for a translucent casing of a module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20990399A JP2001036149A (en) | 1999-07-23 | 1999-07-23 | Light source device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20990399A JP2001036149A (en) | 1999-07-23 | 1999-07-23 | Light source device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001036149A true JP2001036149A (en) | 2001-02-09 |
Family
ID=16580568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20990399A Pending JP2001036149A (en) | 1999-07-23 | 1999-07-23 | Light source device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001036149A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003031858A (en) * | 2001-05-15 | 2003-01-31 | Lumileds Lighting Us Llc | Semiconductor led flip chip with filler having low refractive index |
| JP2006156662A (en) * | 2004-11-29 | 2006-06-15 | Matsushita Electric Ind Co Ltd | Light emitting device |
| US7075118B2 (en) | 2003-12-25 | 2006-07-11 | Seiko Epson Corporation | Light source unit and projector |
| KR100765469B1 (en) * | 2006-07-28 | 2007-10-09 | 한국광기술원 | Led package for optical efficiency |
| JP2008004690A (en) * | 2006-06-21 | 2008-01-10 | Noda Screen:Kk | Light-emitting diode package |
| JP2008177092A (en) * | 2007-01-19 | 2008-07-31 | Casio Comput Co Ltd | Light-emitting device, and printing device |
| JP2008187065A (en) * | 2007-01-31 | 2008-08-14 | Sony Corp | Light source device |
| JP2008186795A (en) * | 2007-01-31 | 2008-08-14 | Casio Comput Co Ltd | Light emitting device and printing device |
| WO2009066670A1 (en) * | 2007-11-20 | 2009-05-28 | Nanoteco Corporation | White led device and method for manufacturing the same |
| JP2009147312A (en) * | 2007-11-20 | 2009-07-02 | Nanoteco Corp | White led device and method of manufacturing the same |
| WO2010062013A1 (en) * | 2008-11-28 | 2010-06-03 | Lee Dong-Soo | Electronic appliance usable in conductive liquid |
| JP2018093105A (en) * | 2016-12-06 | 2018-06-14 | シーシーエス株式会社 | Liquid sealing led |
| JP2020121252A (en) * | 2019-01-29 | 2020-08-13 | 東芝ライテック株式会社 | Photoreaction device, photoreaction method using the same, and method for manufacturing lactam |
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1999
- 1999-07-23 JP JP20990399A patent/JP2001036149A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003031858A (en) * | 2001-05-15 | 2003-01-31 | Lumileds Lighting Us Llc | Semiconductor led flip chip with filler having low refractive index |
| US7075118B2 (en) | 2003-12-25 | 2006-07-11 | Seiko Epson Corporation | Light source unit and projector |
| JP2006156662A (en) * | 2004-11-29 | 2006-06-15 | Matsushita Electric Ind Co Ltd | Light emitting device |
| JP2008004690A (en) * | 2006-06-21 | 2008-01-10 | Noda Screen:Kk | Light-emitting diode package |
| KR100765469B1 (en) * | 2006-07-28 | 2007-10-09 | 한국광기술원 | Led package for optical efficiency |
| JP2008177092A (en) * | 2007-01-19 | 2008-07-31 | Casio Comput Co Ltd | Light-emitting device, and printing device |
| JP2008187065A (en) * | 2007-01-31 | 2008-08-14 | Sony Corp | Light source device |
| JP2008186795A (en) * | 2007-01-31 | 2008-08-14 | Casio Comput Co Ltd | Light emitting device and printing device |
| WO2009066670A1 (en) * | 2007-11-20 | 2009-05-28 | Nanoteco Corporation | White led device and method for manufacturing the same |
| JP2009147312A (en) * | 2007-11-20 | 2009-07-02 | Nanoteco Corp | White led device and method of manufacturing the same |
| WO2010062013A1 (en) * | 2008-11-28 | 2010-06-03 | Lee Dong-Soo | Electronic appliance usable in conductive liquid |
| JP2018093105A (en) * | 2016-12-06 | 2018-06-14 | シーシーエス株式会社 | Liquid sealing led |
| WO2018105619A1 (en) * | 2016-12-06 | 2018-06-14 | シーシーエス株式会社 | Liquid sealed led |
| JP2020121252A (en) * | 2019-01-29 | 2020-08-13 | 東芝ライテック株式会社 | Photoreaction device, photoreaction method using the same, and method for manufacturing lactam |
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