JPH0279354A - Microwave excitation type electrodeless luminous tube and manufacture thereof - Google Patents
Microwave excitation type electrodeless luminous tube and manufacture thereofInfo
- Publication number
- JPH0279354A JPH0279354A JP22883488A JP22883488A JPH0279354A JP H0279354 A JPH0279354 A JP H0279354A JP 22883488 A JP22883488 A JP 22883488A JP 22883488 A JP22883488 A JP 22883488A JP H0279354 A JPH0279354 A JP H0279354A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- glass tube
- straight
- arc tube
- microwave
- 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
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 230000005284 excitation Effects 0.000 title abstract 2
- 239000011521 glass Substances 0.000 claims abstract description 40
- 238000000034 method Methods 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 2
- 239000010453 quartz Substances 0.000 abstract description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 4
- 230000003595 spectral effect Effects 0.000 abstract description 2
- 239000006185 dispersion Substances 0.000 abstract 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 9
- 229910052753 mercury Inorganic materials 0.000 description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 8
- 238000001816 cooling Methods 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 229910052786 argon Inorganic materials 0.000 description 4
- 230000008878 coupling Effects 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000976 ink Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000006552 photochemical reaction Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は紫外線照射により処理される工程、例えば紫
外線硬化型樹脂を硬化させるプロセス等に使用される紫
外線発光装置に用いられるマイクロ波励起型無電極発光
管及びその製造方法に関するものである。Detailed Description of the Invention [Industrial Application Field] The present invention relates to a microwave-excited light emitting device used in an ultraviolet light emitting device used in a process involving ultraviolet irradiation, such as a process for curing an ultraviolet curable resin. The present invention relates to an electrode arc tube and a method for manufacturing the same.
［従来の技術］
従来より主に５０Ｏｎ＋＋＋以下の発光波長の紫外線及
び可視光からなる光源によって、ペンキ、インク、樹脂
、塗料等が塗布された面の表面硬化処理や、光化学反応
による化学物質の合成及び処理等の工程が行われている
。そして、これら工程に用いられる光源は高効率のもの
、及び適切な出力エネルギーレベルのものが要求され、
例えばマイクロ波によって励起される無電極発光装置が
用いられている（例えば、特公昭５７−４４２２８号公
報等参照）。[Prior art] Conventionally, light sources mainly consisting of ultraviolet and visible light with emission wavelengths of 50 On+++ or less have been used to perform surface hardening treatments on surfaces coated with paint, ink, resin, coatings, etc., and to synthesize chemical substances through photochemical reactions. Processes such as processing and processing are being carried out. The light sources used in these processes are required to have high efficiency and an appropriate output energy level.
For example, an electrodeless light emitting device excited by microwaves is used (see, for example, Japanese Patent Publication No. 57-44228).
第２図は従来のマイクロ波励起型無電極発光装置の主要
部の概略を示す断面図で、ｌは水銀とアルゴンの混合ガ
スが充填されたマイクロ波励起型無電極発光管（以下発
光管という）、２ａ、２ｂはこの発光管１を支持する支
持柱、３は楕円鏡（ミラー）、４は非共振のマイクロ波
空洞を形成するマイクロ波空洞壁、５ａ、５ｂはマイク
ロ波を誘導する導波管て、側部には電磁波は通さないか
冷却用の風は通す孔を有している。また、４ａ、４ｂは
この導波管５ａ、５ｂとマイクロ波空洞壁４を結合する
カップリンクスロット、６ａ、６ｂはマイクロ波を発振
するマグネトロン、７ａ、７ｂは冷却風を通す通風筒、
８はこの発光装置を覆う外箱である。Figure 2 is a cross-sectional view schematically showing the main parts of a conventional microwave-excited electrodeless light-emitting device. ), 2a and 2b are support columns that support the arc tube 1, 3 is an elliptical mirror, 4 is a microwave cavity wall forming a non-resonant microwave cavity, and 5a and 5b are guides for guiding microwaves. The wave tube has holes on the sides that do not allow electromagnetic waves to pass through, but allow cooling air to pass through. Further, 4a and 4b are cup link slots that connect the waveguides 5a and 5b to the microwave cavity wall 4, 6a and 6b are magnetrons that oscillate microwaves, and 7a and 7b are ventilation tubes that pass cooling air.
8 is an outer box that covers this light emitting device.
第２図の発光装置において、マクネトロン６ａ、６ｂか
ら発生した高密度のマイクロ波エネルギーはそれぞれ導
波管５ａ、５ｂを伝播し、カップリングスロット４ａ、
４ｂからマイクロ波空洞を介して発光管１内の気体に作
用して、プラズマを形成せしめ、さらにプラズマ中の粒
子と衝突してプロズマ中の粒子を励起させて、この過程
で紫外線及び可視光線が放出される。この放出された紫
外線及び可視光線は、直接及びミラー３て反射して不図
示のワークに照射されて処理が行われる。４′は、光は
透過するか、マイクロ波は透過しない金属メツシュであ
る。In the light emitting device shown in FIG. 2, high-density microwave energy generated from the Macnetrons 6a and 6b propagates through the waveguides 5a and 5b, respectively, and the coupling slots 4a and
4b acts on the gas in the arc tube 1 through the microwave cavity to form a plasma, and further collides with particles in the plasma to excite the particles in the plasma, and in this process ultraviolet rays and visible light are emitted. released. The emitted ultraviolet rays and visible rays are irradiated directly and reflected by the mirror 3 onto a workpiece (not shown) to be processed. 4' is a metal mesh that transmits light but does not transmit microwaves.
尚、発光管ｌは直径１０ｎ＋ｍてその内部の充填ガス（
例えば、水銀とアルゴン）は消灯時は水銀の凝縮で降圧
するか、点灯時は水銀が蒸発してｌから２気圧程度にな
るような圧力で封入されている。そして、マイクロ波空
洞壁４はマクネトロン６ａ、６ｂて発生したマイクロ波
エネルギーが発光管１内に伝播する際に生ずる伝送損失
を考慮し、さらに発光管ｌの寸法、マクネトロン６ａ。Incidentally, the arc tube l has a diameter of 10n+m and the filling gas inside it (
For example, mercury and argon) are sealed at a pressure such that when the lights are off, the pressure drops due to mercury condensation, or when the lights are on, the mercury evaporates and the pressure drops from 1 to 2 atmospheres. The microwave cavity wall 4 is designed based on the dimensions of the arc tube 1 and the dimensions of the arc tube 1, taking into consideration the transmission loss that occurs when the microwave energy generated by the mcnetrons 6a and 6b propagates into the arc tube 1.
６ｂの出力エネルギーの大きさ及びマイクロ波結合モー
ト等によって決められている。It is determined by the magnitude of the output energy of 6b, the microwave coupling moat, etc.
また、発光装置の発光動作中に、発光管１は約８００°
Ｃの温度以上に上昇しないように発光管ｌの管壁を均一
に冷却する必要かある。その際、直径か２５ｍｍのよう
な太い有電極の放電管の場合は、冷却に際して放電管と
それを覆うミラーとの間隔が狭く、管壁の熱負荷が小さ
いのて、強制排気によって冷却することか行われている
が、この発明のマイクロ波励起型無電極発光管の場合、
管の直径か１０−程度の細いものであるため、ミラー３
との間隔が大きいのて、管壁の熱負荷が有電極に比べ大
きいのと、発光管ｌの管壁のどの部分にも均一に一定の
風圧の風か当たるようにしてやる必要から第２図で矢印
で示す風向の送風冷却を行゛っている。Also, during the light emitting operation of the light emitting device, the arc tube 1 is rotated at approximately 80°.
It is necessary to uniformly cool the wall of the arc tube l so that the temperature does not rise above C. At that time, in the case of a discharge tube with a thick electrode, such as a diameter of 25 mm, the distance between the discharge tube and the mirror that covers it is narrow, and the heat load on the tube wall is small, so it is necessary to cool it by forced exhaust. However, in the case of the microwave-excited electrodeless arc tube of this invention,
Since the diameter of the tube is narrow, about 10 mm, the mirror 3
The heat load on the tube wall is greater than that of electrodes due to the large distance between the two electrodes, and it is necessary to ensure that the air at a constant pressure hits every part of the tube wall of the arc tube l uniformly, as shown in Figure 2. Cooling is performed by blowing air in the direction shown by the arrow.
前記２つのマグネトロン６ａ、６ｂから発生されるマイ
クロ波は、カップリングスロット４ａ。The microwaves generated from the two magnetrons 6a and 6b are connected to the coupling slot 4a.
４ｂから等距離になる部分の発光管ｌの中央部て、マイ
クロ波の定常波は干渉し合って０または最小となる場合
がある。従って、発光管１の中央部は、その両端に比し
てマイクロ波の結合が少なくて、封入した水銀やアルゴ
ンガスが加熱励起される割合が少ない。そこて、ミラー
３に設ける冷却風の通じる孔の大きさを、長手方向中央
部て小さくしたりして発光管ｌの中央部の冷却を押えた
り、また第３図のように発光管１の中央部を細くするこ
とが従来から行われている。At the center of the arc tube l, which is equidistant from the arc tube 4b, the standing microwave waves may interfere with each other and become zero or minimum. Therefore, in the center of the arc tube 1, there is less coupling of microwaves than at both ends, and the rate at which the enclosed mercury or argon gas is heated and excited is small. Therefore, the size of the hole provided in the mirror 3 through which the cooling air flows is reduced at the center in the longitudinal direction to suppress cooling of the center of the arc tube 1, or as shown in FIG. Conventionally, the central part is made thinner.
第３図は従来のマイクロ波励起型無電極発光管の概略を
示す図て、発光管の中央部３０を、その両端部３１．３
２よりも細くなるようにテーパなつけたものて、ちなみ
に両端部の外径は１０□−中央部の外径は８−である。FIG. 3 is a diagram schematically showing a conventional microwave-excited electrodeless arc tube.
It is tapered so that it is thinner than 2, and the outer diameter at both ends is 10□ - the outer diameter at the center is 8 -.
［発明か解決しようとする課題］
上記のように、従来のマイクロ波励起型無電極発光管は
、励起すべきマイクロ波のカップリング方法との関係か
ら、発光管中央部におけるマイクロ波の吸収が少なく、
中央部の温度が、両端部の温度に比較して上昇せず、発
光管に封入した水銀の気化状態が均一にならない。そこ
で、発□光管の管壁に、テーパなつけて中央部を細く、
両端部を太くして中央部における水銀の再凝縮を防いで
いる。[Problem to be solved by the invention] As mentioned above, in the conventional microwave-excited electrodeless arc tube, absorption of microwaves at the center of the arc tube is limited due to the coupling method of the microwave to be excited. less,
The temperature at the center does not rise as much as the temperature at both ends, and the vaporization state of the mercury sealed in the arc tube is not uniform. Therefore, the tube wall of the light emitting tube was tapered to make the central part thinner.
Both ends are made thicker to prevent mercury from recondensing in the center.
発光管の管壁は、その性質上、高融点で高透光性である
必要があるので、通常は石英を用いており、石英管を酸
素−水素バーナで加熱して成形することにより製作され
る。ところが、石英管を加工して中央部を両端部に対し
てテーパを有するように細くすることはたやすくなく、
かつばらつきのない製品を生産することは難しく、その
上、作業性か悪く、特に設計値通りの角度を保ってテー
バなつけることは困難である。また、コストも高くなる
。Due to its nature, the wall of an arc tube must have a high melting point and high transparency, so quartz is usually used, and it is manufactured by heating and molding a quartz tube with an oxygen-hydrogen burner. Ru. However, it is not easy to process a quartz tube to make the central part tapered to both ends.
Moreover, it is difficult to produce products with no variations, and in addition, workability is poor, and it is particularly difficult to flatten the taber while maintaining the angle as designed. Moreover, the cost also increases.
この発明はかかる課題を解決するためになされたもので
、簡単な構造で、従来から知られている無電極発光装置
に組み込まれたとき、中央部で発光材料の再凝縮かなく
、かつそれを製造するための作業性もよく、加工も容易
でばらつきのない製品を産出することのできるマイクロ
波励起型無電極発光管及びその製造方法を提供すること
を目的とする。This invention has been made to solve the above problem, and has a simple structure that, when incorporated into a conventionally known electrodeless light emitting device, does not cause recondensation of the luminescent material in the central part. It is an object of the present invention to provide a microwave-excited electrodeless arc tube and a method for manufacturing the same, which can produce products with good workability, easy processing, and no variation.
［課題を解決するための手段］
上記の目的を達成するために、この発明のマイクロ波励
起型無電極発光管は均一な内径を有する第一の直管状ガ
ラス管の管内中央部に、前記第一の直管状ガラス管の内
径寸法に適合した外径寸法を有する第二のガラス管を固
着した構成を有し、その製造方法は前記第一の直管状ガ
ラス管の内径中央部分に前記第二のガラス管を溶着して
固定するものである。[Means for Solving the Problems] In order to achieve the above object, the microwave-excited electrodeless arc tube of the present invention has the first straight glass tube having the first straight glass tube having a uniform inner diameter. It has a structure in which a second glass tube having an outer diameter that matches the inner diameter of the first straight glass tube is fixed, and the manufacturing method includes fixing the second glass tube to the inner diameter center portion of the first straight glass tube. The glass tube is welded and fixed.
［作用］
上記の構成を有することにより、発光材料の再凝縮のな
い発光管の製作は容易で、ばらつきのない製品を得るこ
とができる。[Function] With the above configuration, it is easy to manufacture an arc tube without recondensation of the luminescent material, and a product with no variation can be obtained.
［実施例］
第１図はこの発明の一実施例を説明するための断面図で
、同図（ａ）は発光管の断面図、同図（ｂ）、（ｃ）は
同図（ａ）の発光管の製造工程を順次示す図である。[Example] Fig. 1 is a sectional view for explaining an embodiment of the present invention, in which (a) is a sectional view of an arc tube, and (b) and (c) are sectional views of an arc tube. FIG. 3 is a diagram sequentially showing the manufacturing process of the arc tube.
第１図（ａ）、（ｂ）、（ｃ）において、ｌＯはマイク
ロ波励起型無電極発光管で、スペクトル成分として紫外
線及び可視光線を放射する発光管であり、１１はこの発
光管ｌＯを形成する管壁の肉厚１．０．、、外径ｌＯ−
の石英からなる第一の直管状ガラス管、１２はこの第一
の直管状ガラス管１１の管内中央部に内径６ ｆｆ１ｆ
ｆｉｌ外径８□、長さ５０−の石英からなる第二のガラ
ス管てあり、この第二のガラス管１２の外径寸法は、第
一の直管状ガラス管１１の内径寸法（８，）に適合する
ようになっている。In FIGS. 1(a), (b), and (c), 1O is a microwave-excited electrodeless arc tube that emits ultraviolet and visible light as spectral components, and 11 indicates this arc tube 1O. The thickness of the tube wall to be formed is 1.0. ,,outer diameter lO-
A first straight glass tube 12 made of quartz has an inner diameter of 6 ff1f at the center of the first straight glass tube 11.
There is a second glass tube made of quartz with an outer diameter of 8□ and a length of 50 mm, and the outer diameter of the second glass tube 12 is equal to the inner diameter of the first straight glass tube 11 (8,). It is adapted to suit.
次に、発光管１０の製造工程について説明すると、第１
図（ｂ）に示すように、まず第一の直管状ガラス管１１
内の中央部に第二のガラス管１２を挿入して後、同図（
ｃ）のように、酸素−水素ハーナ１３て第二のガラス管
１２が装着された中央部を加熱して第二のガラス管１２
と第一の直管状ガラス管１１とを溶着して固定する。そ
の後、第一の直管状ガラス管ｌｌ内に水銀やハライド化
した鉄等の発光材料、及びアルゴン等のバッファガス等
を封入した後、その両端をスタブ１４で封止して第１図
゛（ａ）に示すような２３８−の長さの発光管ｌＯが形
成される。Next, the manufacturing process of the arc tube 10 will be explained.
As shown in Figure (b), first a straight glass tube 11
After inserting the second glass tube 12 into the center of the
As shown in c), the oxygen-hydrogen heater 13 heats the central part where the second glass tube 12 is attached, and the second glass tube 12 is heated.
and the first straight glass tube 11 are welded and fixed. Thereafter, a luminescent material such as mercury or halide iron, and a buffer gas such as argon are filled in the first straight glass tube ll, and both ends of the tube are sealed with stubs 14, as shown in FIG. An arc tube IO having a length of 238- is formed as shown in a).
上記のような製造工程によって、例えば水銀２５□及び
アルゴンガスが非点灯時１′／７６ｏ気圧に封入された
発光管１０に対して、フュージョン・システムコーポレ
ーション社製のＦ ４５０−１０ランプシステムを用い
て、出力３ｋＷ、周波数２４５０ＭＨ，のマイクロ波を
給金させた結果、第一の直管状ガラス管１１の中央部直
下１１０−の位置で８２５１″ｗ／。−２の照度が得ら
れた。そのとき、発光管１０において水銀の再凝縮は発
見されなかつた。Through the manufacturing process described above, an F 450-10 lamp system manufactured by Fusion System Corporation is used for the arc tube 10, which is filled with mercury 25□ and argon gas at a pressure of 1'/76 degrees when not lit. As a result of feeding microwaves with an output of 3 kW and a frequency of 2450 MH, an illuminance of 8251"w/.-2 was obtained at a position 110- directly below the center of the first straight glass tube 11. At that time, no recondensation of mercury was found in the arc tube 10.
［発明の効果］
以上説明したとおり、この発明の発光管は均一な内径を
有する第一の直管状ガラス管の管内中央部に、前記第一
の直管状ガラス管の内径寸法に適合した外径寸法を有す
る第二のガラス管を固着した構成を有し、その製造方法
は第一の直管状ガラス管の内径中央部分に前記第二のガ
ラス管を溶着して固定する工程を有するので、製作が容
易で製品にバラツキがなく、コストも安くてきるという
効果がある。[Effects of the Invention] As explained above, in the arc tube of the present invention, a first straight glass tube having a uniform inner diameter has an outer diameter that matches the inner diameter of the first straight glass tube at the center of the tube. The manufacturing method includes a step of welding and fixing the second glass tube to the center portion of the inner diameter of the first straight glass tube. This has the effect of making it easier to produce products, ensuring that there is no variation in the product, and reducing costs.
第１図はこの発明の一実施例を説明するための断面図で
、同図（ａ）は発光管の断面図、同図（ｂ）、（Ｃ）は
同図（ａ）の発光管の製造工程を順次示す図、第２図は
従来のマイクロ波励起型無電極発光装置の主要部の概略
を示す断面図、第３図は従来のマイクロ波励起型無電極
発光管の概略を示す図である。
図中。
１０：発光管
１１：第一の直管状ガラス管
１２：第二のガラス管
１３：酸素−水素バーナ
１４ニスタブ
代理人 弁理士 １）北 嵩 晴
（ｂ）
（ｃ）
第１図FIG. 1 is a cross-sectional view for explaining one embodiment of the present invention, in which (a) is a cross-sectional view of the arc tube, and (b) and (C) are the cross-sectional views of the arc tube in (a). Figure 2 is a cross-sectional view schematically showing the main parts of a conventional microwave-excited electrodeless light emitting device; Figure 3 is a diagram schematically showing a conventional microwave-excited electrodeless arc tube. It is. In the figure. 10: Arc tube 11: First straight glass tube 12: Second glass tube 13: Oxygen-hydrogen burner 14 Nistab agent Patent attorney 1) Haru Kitatake (b) (c) Figure 1
Claims (2)
中央部に、前記第一の直管状ガラス管の内径寸法に適合
した外径寸法を有する第二のガラス管を固着した構成を
有することを特徴とするマイクロ波励起型無電極発光管
。(1) A second glass tube having an outer diameter matching the inner diameter of the first straight glass tube is fixed to the center of the first straight glass tube having a uniform inner diameter. A microwave-excited electrodeless arc tube comprising:
中央部に前記第一の直管状ガラス管の内径寸法に適合し
た外径寸法を有する第二のガラス管を挿入し、前記第一
の直管状ガラス管の内径中央部分に前記第二のガラス管
を溶着して固定することを特徴とするマイクロ波励起型
無電極発光管の製造方法。(2) Insert a second glass tube having an outer diameter that matches the inner diameter of the first straight glass tube into the center of the first straight glass tube having a uniform inner diameter; 1. A method for manufacturing a microwave-excited electrodeless arc tube, comprising: welding and fixing the second glass tube to the center portion of the inner diameter of the first straight glass tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63228834A JP2561902B2 (en) | 1988-09-14 | 1988-09-14 | Microwave-excited electrodeless arc tube and method for manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63228834A JP2561902B2 (en) | 1988-09-14 | 1988-09-14 | Microwave-excited electrodeless arc tube and method for manufacturing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0279354A true JPH0279354A (en) | 1990-03-19 |
| JP2561902B2 JP2561902B2 (en) | 1996-12-11 |
Family
ID=16882589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63228834A Expired - Lifetime JP2561902B2 (en) | 1988-09-14 | 1988-09-14 | Microwave-excited electrodeless arc tube and method for manufacturing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2561902B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003510773A (en) * | 1999-09-20 | 2003-03-18 | ノードソン コーポレーション | Apparatus and method for generating ultraviolet light |
| WO2005071714A1 (en) * | 2004-01-22 | 2005-08-04 | Matsushita Electric Industrial Co., Ltd. | External-electrode discharge lamp, external-electrode discharge lamp manufacturing method, and backlight unit |
| JP2006114505A (en) * | 2004-10-18 | 2006-04-27 | Heraeus Noblelight Ltd | High-power discharge lamp |
| US7253555B2 (en) | 2002-10-24 | 2007-08-07 | Lg Electronics Inc. | Electrodeless lamp system and bulb thereof |
-
1988
- 1988-09-14 JP JP63228834A patent/JP2561902B2/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003510773A (en) * | 1999-09-20 | 2003-03-18 | ノードソン コーポレーション | Apparatus and method for generating ultraviolet light |
| JP4901041B2 (en) * | 1999-09-20 | 2012-03-21 | ノードソン コーポレーション | Apparatus and method for generating ultraviolet light |
| US7253555B2 (en) | 2002-10-24 | 2007-08-07 | Lg Electronics Inc. | Electrodeless lamp system and bulb thereof |
| WO2005071714A1 (en) * | 2004-01-22 | 2005-08-04 | Matsushita Electric Industrial Co., Ltd. | External-electrode discharge lamp, external-electrode discharge lamp manufacturing method, and backlight unit |
| JP2006114505A (en) * | 2004-10-18 | 2006-04-27 | Heraeus Noblelight Ltd | High-power discharge lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2561902B2 (en) | 1996-12-11 |
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