JPH04357662A - Electrodeless discharge lamp - Google Patents
Electrodeless discharge lampInfo
- Publication number
- JPH04357662A JPH04357662A JP3087045A JP8704591A JPH04357662A JP H04357662 A JPH04357662 A JP H04357662A JP 3087045 A JP3087045 A JP 3087045A JP 8704591 A JP8704591 A JP 8704591A JP H04357662 A JPH04357662 A JP H04357662A
- Authority
- JP
- Japan
- Prior art keywords
- section
- main discharge
- discharge space
- bulb
- thin tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000008878 coupling Effects 0.000 claims abstract description 13
- 238000010168 coupling process Methods 0.000 claims abstract description 13
- 238000005859 coupling reaction Methods 0.000 claims abstract description 13
- 230000006698 induction Effects 0.000 claims abstract description 11
- 230000001939 inductive effect Effects 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 abstract description 2
- 230000006641 stabilisation Effects 0.000 abstract 1
- 238000011105 stabilization Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 5
- 229910001507 metal halide Inorganic materials 0.000 description 5
- 150000005309 metal halides Chemical class 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000010248 power generation Methods 0.000 description 4
- 229910052753 mercury Inorganic materials 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Plasma Technology (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、ランプ内部に電極を持
たず、外部からの高周波電磁界によってランプ内部の放
電ガスを励起発光させる無電極放電ランプに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrodeless discharge lamp which does not have electrodes inside the lamp and which excites discharge gas inside the lamp to emit light using a high-frequency electromagnetic field from the outside.
【０００２】0002
【従来の技術】従来より、無電極放電ランプは小型で高
出力、長寿命といった特徴を有する為、各所で研究開発
されている。その用途は様々であるが、例えば、高出力
点光源としての利用が考えられている。2. Description of the Related Art Conventionally, electrodeless discharge lamps have been researched and developed in various places because they have characteristics such as small size, high output, and long life. Although its uses are various, for example, it is being considered to be used as a high-output point light source.
【０００３】このような無電極放電ランプのうち、例え
ば、特開昭５７−７８７６６号公報に開示されたランプ
では、図４に示すように、空芯コイル１１を被うような
バルブ１２を形成し、この空芯コイル１１に高周波電流
を流して発生する電磁界によってバルブ１２内の水銀蒸
気を放電させるもので、ここで使われる円筒形コイルに
よる磁界は、その内部で最も強いものであるが、この例
ではその部分に放電空間は存在せず、専らコイル外部の
磁界を利用する形でバルブ１２が形成されている。Among such electrodeless discharge lamps, for example, in the lamp disclosed in Japanese Patent Laid-Open No. 57-78766, a bulb 12 is formed to cover an air core coil 11, as shown in FIG. However, the mercury vapor inside the bulb 12 is discharged by the electromagnetic field generated by passing a high-frequency current through this air-core coil 11.The magnetic field produced by the cylindrical coil used here is the strongest inside the bulb. In this example, there is no discharge space in that part, and the bulb 12 is formed using only the magnetic field outside the coil.
【０００４】また、最近各所で開発されている電磁波に
よって発光させる高出力無電極放電ランプの形状は、図
５に示すように球状であり、透明石英等で形成されたバ
ルブ１３内に希ガスと発光物質が封入されて、バルブ１
３の回りに誘導コイル１４が巻かれている。発光物質と
して水銀を選んだ場合、初期始動は比較的容易であるが
再始動は困難であり、また、温度上昇に伴い水銀蒸気圧
が指数関数的に変化するため、回路系とランプとの間の
整合状態が非常に悪くなり、ランプを安定に動作させら
れない。[0004] Furthermore, the shape of high-output electrodeless discharge lamps that have been recently developed in various places and emit light using electromagnetic waves is spherical as shown in FIG. Bulb 1 is filled with luminescent material.
An induction coil 14 is wound around 3. When mercury is selected as the luminescent material, initial startup is relatively easy, but restarting is difficult, and the mercury vapor pressure changes exponentially as the temperature rises, so there is The matching condition becomes very poor and the lamp cannot operate stably.
【０００５】整合状態を良くするために水銀を入れなか
った場合には、初期始動が非常に困難になり、高電圧を
印加して強制的に始動させようとすれば、大型の点灯装
置が必要になる。If mercury is not added to improve the matching condition, initial starting will be extremely difficult, and if a high voltage is applied to force the starting, a large lighting device will be required. become.
【０００６】このような問題点に鑑み、本願出願人は先
に、始動性が良好で、高周波回路との整合性も良い無電
極放電ランプを出願した。以下、図６及び図７に基づい
てその概要を述べる。In view of these problems, the applicant of the present application previously filed an application for an electrodeless discharge lamp that has good startability and good compatibility with high frequency circuits. The outline will be described below based on FIGS. 6 and 7.
【０００７】図において、１は細管部２を有する球状の
バルブであって、気密性で透光性を有し、内部にはキセ
ノンガス１００Ｔｏｒｒと、メタルハライド物質として
ＮａＩ−ＴａＩ−ＩｎＩが総量２４ｍｇ、重量％比率８
０：１５：５で封入されている。３は前記バルブ１の外
周壁に沿って巻かれた誘導コイルで、この例では３ター
ン巻かれ、その両端は高周波電力発生部４に接続されて
いる。In the figure, reference numeral 1 denotes a spherical bulb having a thin tube portion 2, which is airtight and translucent. Weight% ratio 8
It is enclosed in a ratio of 0:15:5. Reference numeral 3 denotes an induction coil wound along the outer circumferential wall of the bulb 1. In this example, the induction coil is wound with three turns, and both ends thereof are connected to the high frequency power generating section 4.
【０００８】５，６は箔状導電性材料よりなる一対の補
助電極で、前記細管部２に僅かな間隔（空気中で絶縁破
壊が生じない程度、この例では０．５ ｍｍ離れている
）をもって巻き付けられており、この補助電極５，６は
、前記誘導コイル３の両端に接続線７を介してそれぞれ
接続されている。[0008] Reference numerals 5 and 6 denote a pair of auxiliary electrodes made of foil-like conductive material, which are spaced apart from each other by a small distance (to the extent that dielectric breakdown does not occur in the air, in this example, 0.5 mm) at the thin tube portion 2. The auxiliary electrodes 5 and 6 are connected to both ends of the induction coil 3 via connecting wires 7, respectively.
【０００９】このように構成された無電極放電ランプに
おいて、誘導コイル３に高周波電流を流した場合、コイ
ル端子間に電圧が発生する。この発生電圧は、前記細管
部２の電極５，６間にもかかる。しかるに、この電極間
距離はコイル端子間距離に比べて小さいので、電極５，
６間の電界強度はコイル３間の電界強度よりも大きい。
従って、先ず、細管部２でＸｅガスの絶縁破壊が生じる
。細管部２で生じた放電はストリーマー状となり、入力
が増すに従いバルブ１の主放電空間へと伸びて行く。In the electrodeless discharge lamp constructed as described above, when a high frequency current is passed through the induction coil 3, a voltage is generated between the coil terminals. This generated voltage is also applied between the electrodes 5 and 6 of the thin tube section 2. However, since this distance between the electrodes is smaller than the distance between the coil terminals, the electrodes 5,
The electric field strength between the coils 6 and 6 is greater than the electric field strength between the coils 3. Therefore, first, dielectric breakdown of the Xe gas occurs in the thin tube portion 2. The discharge generated in the thin tube portion 2 becomes streamer-shaped and extends into the main discharge space of the bulb 1 as the input increases.
【００１０】主放電空間内で十分に電子密度が増えると
、誘導コイル３に沿って主放電空間であるバルブ１内で
リング状の強い発光を伴う放電が生じる。このリング状
放電による温度上昇でメタルハライド物質の蒸気圧が上
がり、金属発光が主体の放電となる。従って、水銀を封
入しなくても初期始動は容易であり、しかも、高周波回
路との整合性も良い無電極放電ランプが得られる。When the electron density increases sufficiently within the main discharge space, a ring-shaped discharge accompanied by strong light emission occurs within the bulb 1, which is the main discharge space, along the induction coil 3. The temperature rise caused by this ring-shaped discharge increases the vapor pressure of the metal halide substance, resulting in a discharge in which metallic luminescence is the main component. Therefore, it is possible to obtain an electrodeless discharge lamp that is easy to start up initially without encapsulating mercury and has good compatibility with high-frequency circuits.
【００１１】[0011]
【発明が解決しようとする課題】しかしながら、上述の
ような無電極放電ランプにおいては、例えば、再始動の
際などに、前記ストリーマー状放電が十分に主放電空間
に伸びない場合がある。このような場合、主放電の始動
が困難になるという問題があった。However, in the above-mentioned electrodeless discharge lamp, the streamer-like discharge may not extend sufficiently into the main discharge space, for example, at the time of restarting. In such a case, there is a problem in that it becomes difficult to start the main discharge.
【００１２】本発明は、上記問題点に鑑みなされたもの
で、その目的とするところは、始動性が良く、高周波回
路との整合性も良く、しかも動作安定中に所望の光出力
が得られる無電極放電ランプを提供することにある。The present invention has been made in view of the above problems, and its objectives are to have good startability, good compatibility with high frequency circuits, and to obtain a desired optical output during stable operation. An object of the present invention is to provide an electrodeless discharge lamp.
【００１３】[0013]
【課題を解決するための手段】上記課題を解決するため
本発明は、透光性バルブの外周壁に沿って巻かれた誘導
コイルに高周波電流を通電することにより、前記バルブ
内に封入した放電ガスを励起発光させて成る無電極放電
ランプにおいて、前記バルブは主放電空間と、該主放電
空間と同一空間で管径が主放電空間に比べて小さい細管
部とから成り、かつ、高周波電力を供給する静電的ある
いは誘導的結合部を前記細管部に設けるとともに、前記
静電的あるいは誘導的結合部の主放電空間に近い側の電
位よりも低い電位になる部分を、前記主放電空間近傍に
設けたことを特徴とするものである。なお、前記細管部
に加熱手段あるいは保温手段を設けてもよい。[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention provides an electric discharge sealed in the light-transmitting bulb by passing a high-frequency current through an induction coil wound along the outer peripheral wall of the light-transmitting bulb. In an electrodeless discharge lamp that excites a gas to emit light, the bulb consists of a main discharge space and a thin tube section that is in the same space as the main discharge space and has a smaller tube diameter than the main discharge space, and that is configured to emit high-frequency power. An electrostatic or inductive coupling portion to be supplied is provided in the thin tube portion, and a portion of the electrostatic or inductive coupling portion having a potential lower than the potential on the side closer to the main discharge space is provided near the main discharge space. It is characterized by the fact that it is provided in Note that the thin tube portion may be provided with a heating means or a heat retaining means.
【００１４】[0014]
【実施例１】図１は本発明の第１の実施例を示すもので
、前記図６及び図７に示す先行技術と異なる点は、前記
細管部２に設けた静電的結合部である補助電極５，６の
うち主放電空間に近い側の補助電極５から見て負の電位
になるような部分８を、前記主放電空間近傍に設けたこ
とで、他の構成は前記先行技術と同様であるので、同等
構成に同一符号を付すことにより説明を省略する。なお
、主放電空間に近い側の補助電極５は、前記先行技術と
同様に大地電位にされている。[Embodiment 1] FIG. 1 shows a first embodiment of the present invention, which differs from the prior art shown in FIGS. 6 and 7 in that an electrostatic coupling portion is provided in the thin tube portion 2. By providing a portion 8 of the auxiliary electrodes 5 and 6 that has a negative potential when viewed from the auxiliary electrode 5 on the side closer to the main discharge space near the main discharge space, the other configuration is different from that of the prior art. Since they are the same, the description will be omitted by assigning the same reference numerals to the equivalent configurations. Note that the auxiliary electrode 5 on the side closer to the main discharge space is set to the ground potential as in the prior art.
【００１５】このように構成したことにより、上記「従
来の技術」の欄で述べたと同様の過程で、始動初期に細
管部２にストリーマー状放電が発生する。このストリー
マー状放電は陽イオン中心の放電である。従って、細管
部２から主放電空間に入ったストリーマー状放電は、主
放電空間近傍に設けられた負電位の部分８に向かって導
かれる。即ち、負電位部分がない前記先行技術と比べ、
ストリーマー状放電が伸び易くなる。つまり、始動、再
始動がし易くなる。With this configuration, a streamer-like discharge is generated in the thin tube portion 2 at the initial stage of startup in the same process as described in the ``Prior Art'' section above. This streamer-like discharge is centered on cations. Therefore, the streamer-shaped discharge entering the main discharge space from the thin tube portion 2 is guided toward the negative potential portion 8 provided near the main discharge space. That is, compared to the prior art which does not have a negative potential portion,
Streamer-like discharge becomes easier to extend. In other words, it becomes easier to start and restart.
【００１６】なお、本実施例では、細管部２に静電的結
合部を持った構成で説明したが、誘導的結合部を静電的
結合部の代わりに設けても勿論よい。Although this embodiment has been described with a configuration in which the thin tube section 2 has an electrostatic coupling section, it is of course possible to provide an inductive coupling section in place of the electrostatic coupling section.
【００１７】[0017]
【実施例２】図２は本発明の第２の実施例を示すもので
、前記静電的結合部である補助電極５，６に加え、さら
に負の電位になる第３の補助電極９を前記細管部２の主
放電空間に近い側に設けた構成とし、補助電極５，６間
に高周波電流を流すとともに補助電極５を大地電位にし
、補助電極９は補助電極５よりも負電位となるように構
成されている。なお、補助電極５，６の代わりに誘導的
結合部を設けても勿論よい。[Embodiment 2] FIG. 2 shows a second embodiment of the present invention, in which in addition to the auxiliary electrodes 5 and 6 which are the electrostatic coupling portions, a third auxiliary electrode 9 having a negative potential is further provided. The thin tube part 2 is provided on the side closer to the main discharge space, and a high frequency current is passed between the auxiliary electrodes 5 and 6, and the auxiliary electrode 5 is set to the ground potential, and the auxiliary electrode 9 has a more negative potential than the auxiliary electrode 5. It is configured as follows. Note that, of course, inductive coupling portions may be provided in place of the auxiliary electrodes 5 and 6.
【００１８】このように構成したことにより、補助電極
５，６だけの場合に比べ、ストリーマー状放電が主放電
空間に伸び易くなる。With this configuration, the streamer-like discharge can more easily extend into the main discharge space than in the case where only the auxiliary electrodes 5 and 6 are used.
【００１９】[0019]
【実施例３】図３は本発明の第３の実施例を示すもので
、実施例１と異なる点は、細管部２に加熱手段としての
ヒータ１０を設けたことである。[Embodiment 3] FIG. 3 shows a third embodiment of the present invention, which differs from the first embodiment in that a heater 10 as a heating means is provided in the thin tube portion 2.
【００２０】このように構成したことにより、動作安定
中に主放電空間内のメタルハライド物質が細管部２に移
動することが避けられ、動作中に色シフトのない無電極
メタルハライドランプが得られる。With this configuration, it is possible to prevent the metal halide material in the main discharge space from moving to the thin tube portion 2 during stable operation, and an electrodeless metal halide lamp without color shift during operation can be obtained.
【００２１】加熱手段の代わりに保温手段を用いたり、
細管部２の内側や外側に赤外線反射膜等を設けても勿論
よい。また、このような構成は、前記実施例２に施して
も勿論よい。[0021] Using heat retention means instead of heating means,
Of course, an infrared reflective film or the like may be provided on the inside or outside of the thin tube portion 2. Further, such a configuration may of course be applied to the second embodiment.
【００２２】[0022]
【実施例４】この実施例は、実施例１において補助電極
５，６に給電する高周波電力発生部を、誘導コイル３に
給電する高周波電力発生部４とは独立に設けたもので、
他の構成は前記実施例と同様である。[Embodiment 4] In this embodiment, the high frequency power generation section that supplies power to the auxiliary electrodes 5 and 6 in the first embodiment is provided independently from the high frequency power generation section 4 that supplies power to the induction coil 3.
The other configurations are the same as those in the previous embodiment.
【００２３】このように構成することにより、細管部２
において必要以上の電力が消費される心配がなくなる。
本実施例は、実施例１のように高周波電力発生部４が共
通の場合には、細管部２での放電が主放電よりも先に起
こるため、細管部放電空間でのインピーダンスが下がり
、高周波電力を供給していっても、細管部２での電力吸
収ばかりが増加し、主放電に移行しにくい場合などに有
効である。With this configuration, the thin tube portion 2
There is no need to worry about consuming more power than necessary. In this embodiment, when the high-frequency power generating section 4 is common as in the first embodiment, the discharge in the thin tube section 2 occurs before the main discharge, so the impedance in the discharge space of the thin tube section decreases, and the high frequency power generation section 4 is shared. This is effective in cases where even if power is supplied, the power absorption in the thin tube portion 2 increases, making it difficult to transition to main discharge.
【００２４】[0024]
【発明の効果】本発明は上記のように、細管部に高周波
電力を供給する静電的あるいは誘導的結合部を設けると
ともに、該結合部の主放電空間に近い側の電位よりも低
い電位になる部分を主放電空間近傍に設けたことにより
、始動性が良く、高周波回路との整合性も良く、しかも
動作安定中に所望の光出力が得られる無電極放電ランプ
を提供できる。Effects of the Invention As described above, the present invention provides an electrostatic or inductive coupling portion for supplying high-frequency power to the thin tube portion, and also provides a capacitor with a potential lower than the potential on the side of the coupling portion near the main discharge space. By providing this portion near the main discharge space, it is possible to provide an electrodeless discharge lamp that has good startability, good compatibility with a high-frequency circuit, and can provide a desired light output during stable operation.
【００２５】また、細管部に加熱手段あるいは保温手段
を設けることにより、動作安定中に主放電空間内のメタ
ルハライド物質が細管部に移動することが避けられ、動
作中に色シフトのない無電極メタルハライドランプが得
られる。Furthermore, by providing a heating means or a heat retaining means in the capillary section, it is possible to prevent the metal halide substance in the main discharge space from moving to the capillary section during stable operation, and to produce an electrodeless metal halide material without color shift during operation. You will get a lamp.
【図１】本発明の第１の実施例を示す簡略図である。FIG. 1 is a simplified diagram showing a first embodiment of the invention.
【図２】本発明の第２の実施例を示す簡略図である。FIG. 2 is a simplified diagram showing a second embodiment of the invention.
【図３】本発明の第３の実施例を示す簡略図である。FIG. 3 is a simplified diagram showing a third embodiment of the invention.
【図４】従来例を示す一部断面の正面図である。FIG. 4 is a partially sectional front view showing a conventional example.
【図５】異なる従来例を示す簡略図である。FIG. 5 is a simplified diagram showing a different conventional example.
【図６】先行技術を示す簡略図である。FIG. 6 is a simplified diagram illustrating the prior art.
【図７】上記先行技術のランプ部分の断面図である。FIG. 7 is a cross-sectional view of the prior art lamp section.
１ バルブ ２ 細管部 ３ 誘導コイル ４ 高周波電力発生部 ５ 補助電極 ６ 補助電極 ７ 接続線 ８ 負電位部分 ９ 第３の補助電極 １０ 加熱手段 1 Valve 2 Thin tube part 3 Induction coil 4 High frequency power generation section 5 Auxiliary electrode 6 Auxiliary electrode 7 Connection line 8 Negative potential part 9 Third auxiliary electrode 10 Heating means
Claims (2)
た誘導コイルに高周波電流を通電することにより、前記
バルブ内に封入した放電ガスを励起発光させて成る無電
極放電ランプにおいて、前記バルブは主放電空間と、該
主放電空間と同一空間で管径が主放電空間に比べて小さ
い細管部とから成り、かつ、高周波電力を供給する静電
的あるいは誘導的結合部を前記細管部に設けるとともに
、前記静電的あるいは誘導的結合部の主放電空間に近い
側の電位よりも低い電位になる部分を、前記主放電空間
近傍に設けたことを特徴とする無電極放電ランプ。1. An electrodeless discharge lamp in which a discharge gas sealed in the bulb is excited to emit light by passing a high-frequency current through an induction coil wound along the outer peripheral wall of the light-transmitting bulb. The bulb consists of a main discharge space and a thin tube section that is in the same space as the main discharge space and has a smaller tube diameter than the main discharge space, and has an electrostatic or inductive coupling section that supplies high frequency power connected to the thin tube section. An electrodeless discharge lamp characterized in that a portion of the electrostatic or inductive coupling portion having a potential lower than a potential on a side closer to the main discharge space is provided in the vicinity of the main discharge space.
段を設けた請求項１記載の無電極放電ランプ。2. The electrodeless discharge lamp according to claim 1, wherein the thin tube portion is provided with heating means or heat retention means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3087045A JPH04357662A (en) | 1991-04-19 | 1991-04-19 | Electrodeless discharge lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3087045A JPH04357662A (en) | 1991-04-19 | 1991-04-19 | Electrodeless discharge lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04357662A true JPH04357662A (en) | 1992-12-10 |
Family
ID=13903971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3087045A Pending JPH04357662A (en) | 1991-04-19 | 1991-04-19 | Electrodeless discharge lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04357662A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004527077A (en) * | 2001-03-27 | 2004-09-02 | アピト コープ．エス．アー． | Plasma surface treatment method and apparatus for implementing the method |
-
1991
- 1991-04-19 JP JP3087045A patent/JPH04357662A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004527077A (en) * | 2001-03-27 | 2004-09-02 | アピト コープ．エス．アー． | Plasma surface treatment method and apparatus for implementing the method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5747945A (en) | Electrodeless discharge lamp utilizing induced electric field generated by a high frequency electromagnetic field | |
| US5300860A (en) | Capacitively coupled RF fluorescent lamp with RF magnetic enhancement | |
| US7084562B2 (en) | Electrodeless discharge lamp | |
| US4266166A (en) | Compact fluorescent light source having metallized electrodes | |
| JPH0679517B2 (en) | Starting circuit for electrodeless high intensity discharge lamp | |
| US4233541A (en) | Start winding for solenoidal electric field discharge lamps | |
| JPH04229549A (en) | Starting auxiliary device for electrodeless high-luminosity dischage lamp | |
| JPH04357662A (en) | Electrodeless discharge lamp | |
| JPH0715094Y2 (en) | Electrodeless discharge lamp | |
| JPH04174957A (en) | Electrodeless discharge lamp | |
| JPH0697606B2 (en) | Electrodeless discharge lamp | |
| JP3017581B2 (en) | Electrodeless lamp | |
| JP2002231472A (en) | Discharge lamp | |
| JP3489211B2 (en) | Electrodeless discharge lamp | |
| JP2781094B2 (en) | Electrodeless lamp | |
| JP3879299B2 (en) | Electrodeless discharge lamp device | |
| JP2733166B2 (en) | Electrodeless lamp | |
| US20130147349A1 (en) | Integral starter for electrodeless lamp | |
| JPH04163853A (en) | Electrodeless discharge lamp | |
| JP2834925B2 (en) | Electrodeless lamp | |
| JPS6191852A (en) | Nonelectrode discharge lamp | |
| JP3195628B2 (en) | Electrodeless lamp | |
| JPH08287877A (en) | Electrodeless electric discharge lamp | |
| JP3280399B2 (en) | Electrodeless lamp | |
| JP3107269B2 (en) | Electrodeless lamp |