JPH0877980A - Halogen lamp - Google Patents
Halogen lampInfo
- Publication number
- JPH0877980A JPH0877980A JP21241094A JP21241094A JPH0877980A JP H0877980 A JPH0877980 A JP H0877980A JP 21241094 A JP21241094 A JP 21241094A JP 21241094 A JP21241094 A JP 21241094A JP H0877980 A JPH0877980 A JP H0877980A
- Authority
- JP
- Japan
- Prior art keywords
- bulb
- filament
- multilayer interference
- interference film
- spheroid
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、店舗、スタジオ等の照
明の光源に用いられるハロゲン電球に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a halogen bulb used as a light source for lighting a store, a studio or the like.
【０００２】[0002]
【従来の技術】一般に、ハロゲン電球は、店舗内の商品
をきわだたせるために反射鏡を取り付けて特定の商品だ
けを照明するというスポット光源として多く使われてい
る。また、店舗内全体の照明には蛍光灯が用いられてい
る。しかし、ハロゲン電球の光は蛍光灯の光に比べると
かなり赤みを帯びた色をしているために、ハロゲン電球
と蛍光灯とを同時に使用すると違和感が生じてしまう。2. Description of the Related Art Generally, halogen bulbs are often used as spot light sources for illuminating only specific products by attaching a reflecting mirror in order to highlight the products in a store. Fluorescent lamps are used for lighting the entire store. However, since the light from the halogen bulb has a reddish color compared to the light from the fluorescent bulb, a sense of discomfort occurs when the halogen bulb and the fluorescent bulb are used at the same time.
【０００３】この問題を解決するために、回転楕円体を
有するバルブの表面に多層干渉膜を形成し、可視光の長
波長側の光、すなわち赤色光をカットして色温度を上げ
たハロゲン電球がある（特開平４−４７６６０号公
報）。In order to solve this problem, a multi-layer interference film is formed on the surface of a bulb having a spheroid to cut light on the long wavelength side of visible light, that is, red light, to raise the color temperature. (Japanese Patent Laid-Open No. 4-47660).
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、従来の
ハロゲン電球は、回転楕円体を有するバルブ表面に多層
干渉膜を設け、この多層干渉膜によって赤色光を反射さ
せ、赤外線を透過させてフィラメントから放射される光
の色温度を上げている。したがって、可視光の赤色光を
反射するので光束が低下してしまう。However, in the conventional halogen bulb, a multilayer interference film is provided on the surface of a bulb having a spheroid, and the multilayer interference film reflects red light and transmits infrared rays to radiate from a filament. Raising the color temperature of the light that is emitted. Therefore, since the visible red light is reflected, the luminous flux is reduced.
【０００５】本発明はこのような問題点を解決するため
になされたもので、可視光の赤色光を反射しても光束の
低下を抑制することのできるハロゲン電球を提供するこ
とを目的とするものである。The present invention has been made to solve the above problems, and an object of the present invention is to provide a halogen bulb capable of suppressing a decrease in luminous flux even when red light of visible light is reflected. It is a thing.
【０００６】[0006]
【課題を解決するための手段】本発明のハロゲン電球
は、回転楕円体を有するバルブ内に、このバルブの２つ
の焦点と両端とが一致するようにフィラメントが設けら
れ、さらに前記バルブの表面に高屈折率層と低屈折率層
とを交互に積層してなる多層干渉膜が形成されており、
前記多層干渉膜は赤色光および赤外線を反射する構成を
有する。According to the halogen bulb of the present invention, a filament having a spheroid is provided in the bulb so that two focal points of the bulb coincide with both ends of the bulb. A multilayer interference film formed by alternately stacking a high refractive index layer and a low refractive index layer is formed,
The multilayer interference film has a structure that reflects red light and infrared light.
【０００７】[0007]
【作用】かかる構成により、フィラメントから放出され
た光の多層干渉膜に入射する角度は垂直近くになる割合
が大きくなり、赤色光を反射する割合、および、赤外線
をフィラメントに戻す割合が増加する。With this structure, the angle of incidence of light emitted from the filament on the multilayer interference film becomes nearly vertical, and the proportion of red light reflected and the proportion of infrared light returned to the filament increase.
【０００８】[0008]
【実施例】図１は本発明の一実施例であるハロゲン電球
を示す。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a halogen light bulb which is an embodiment of the present invention.
【０００９】図１に示すように、先端部１ｂに閉塞部を
有する管状体および後端部１ｃに管状体を有し、中央部
に回転楕円体１ａを有する石英製のガラスバルブ１内
に、フィラメント２が、回転楕円体１ａの二つの焦点に
フィラメント２の両端部が一致するように設けられてい
る。バルブ１の回転楕円体１ａはフィラメント２から放
射された光が可能な限り垂直に入射するように形成され
ている。As shown in FIG. 1, a quartz glass bulb 1 having a tubular body having a closed portion at the front end 1b and a tubular body at the rear end 1c and a spheroid 1a at the center, The filament 2 is provided so that both ends of the filament 2 coincide with the two focal points of the spheroid 1a. The spheroid 1a of the bulb 1 is formed so that the light emitted from the filament 2 enters as vertically as possible.
【００１０】フィラメント２は一端部をリード線４に、
他端部をリード線５にそれぞれ接続されてバルブ内に支
持されている。バルブ１の外表面全体には高屈折率層と
低屈折率層とを交互に積層されて構成された多層干渉膜
３が設けられ、この多層干渉膜３は可視光域の赤色光お
よび赤外線を反射する。後端部には口金６を有するベー
ス７が設けられている。The filament 2 has one end connected to the lead wire 4,
The other ends are connected to the lead wires 5 and are supported in the valve. The entire outer surface of the bulb 1 is provided with a multilayer interference film 3 constituted by alternately stacking high-refractive index layers and low-refractive index layers. The multilayer interference film 3 emits red light and infrared light in the visible light range. reflect. A base 7 having a base 6 is provided at the rear end portion.
【００１１】なお、多層干渉膜３は次のように形成し
た。多層干渉膜３は酸化チタン（ＴｉＯ2）と酸化シリ
コン（ＳｉＯ2）の層からなっている。高屈折率層とし
てはＴｉＯ2を用いた。The multilayer interference film 3 was formed as follows. The multilayer interference film 3 is composed of layers of titanium oxide (TiO 2 ) and silicon oxide (SiO 2 ). TiO 2 was used as the high refractive index layer.
【００１２】まず、テトラブチルチタネートをエタノー
ル系の溶剤に溶かした液にバルブ１を浸漬し、引き上げ
速度を変化させてバルブ、特に回転楕円体１ａに均一な
膜を塗布する。この後、このバルブ１を乾燥および焼成
し、バルブ表面に高屈折率層を得た。また、低屈折率層
としてはＳｉＯ2を用いた。First, the valve 1 is dipped in a solution in which tetrabutyl titanate is dissolved in an ethanol-based solvent, and the pulling speed is changed to apply a uniform film to the valve, particularly the spheroid 1a. Then, the bulb 1 was dried and fired to obtain a high refractive index layer on the surface of the bulb. Further, SiO 2 was used as the low refractive index layer.
【００１３】上記と同様に、テトラエチルシリケートを
エタノール系の溶剤に溶かした液に、上記の高屈折率層
を形成したバルブ１を浸漬し、高屈折率層の場合と同じ
ように引き上げ、乾燥および焼成を行う。この工程を繰
り返して多層干渉膜３をバルブ１表面に形成する。各層
の膜厚は、溶液の濃度と引き上げ速度によって決定され
る。Similarly to the above, the valve 1 having the above-mentioned high refractive index layer was dipped in a solution obtained by dissolving tetraethyl silicate in an ethanol solvent, pulled up in the same manner as in the case of the high refractive index layer, dried and dried. Bake. By repeating this process, the multilayer interference film 3 is formed on the surface of the bulb 1. The film thickness of each layer is determined by the concentration of the solution and the pulling rate.
【００１４】このように形成された多層干渉膜３は、可
視光域で赤色光である６００ｎｍ以上で高反射率を有
し、かつ赤外線域で高反射率を有するものである。The multilayer interference film 3 thus formed has a high reflectance in the visible light range of 600 nm or more, which is red light, and a high reflectance in the infrared range.
【００１５】すなわち、図２に示すように本発明にかか
る多層干渉膜３は第１、第２、第３、および、第４の層
からなっている。そして多層干渉膜３には、高屈折率層
（Ｈ）にＴｉＯ2、低屈折率層（Ｌ）にＳｉＯ2がそれぞ
れ用いられている。That is, as shown in FIG. 2, the multilayer interference film 3 according to the present invention comprises first, second, third and fourth layers. In the multilayer interference film 3, TiO 2 is used for the high refractive index layer (H) and SiO 2 is used for the low refractive index layer (L).
【００１６】第１膜８は光学膜厚１６０ｎｍでＨ・Ｌ・
Ｈの順に３層積層したものであり、第２膜９はＬで光学
膜厚が８０ｎｍ、第３膜１０は、光学膜厚２５０ｎｍで
Ｈ・Ｌ・・・Ｈの順に７層積層したもの、第４膜１１は
Ｌで光学膜厚１２５ｎｍである。The first film 8 has an optical film thickness of 160 nm and has an H.L.
3 layers are laminated in the order of H, the second film 9 is L and the optical film thickness is 80 nm, and the third film 10 is an optical film thickness of 250 nm and 7 layers are laminated in the order of H · L ... H. The fourth film 11 is L and has an optical film thickness of 125 nm.
【００１７】図３にこの多層干渉膜３の分光透過率曲線
を示す。図３から明らかなように、多層干渉膜３によっ
て６００ｎｍ以上の赤色光がカットされ色温度が高くな
り、かつ赤外線を反射しているので、光束が高くなって
いることがわかる。FIG. 3 shows a spectral transmittance curve of the multilayer interference film 3. As is clear from FIG. 3, since the multilayer interference film 3 cuts red light of 600 nm or more to increase the color temperature and reflects infrared rays, it can be seen that the luminous flux is high.
【００１８】本実施例の電圧１１０Ｖ、電力８５Ｗのハ
ロゲン電球の色温度を測定したところ、色温度３３３５
Ｋであり、光束が、従来の赤色光のみカットされたもの
よりも１５％向上したことが確認された。なお、従来の
ハロゲン電球の色温度は２８５０Ｋであった。When the color temperature of the halogen electric bulb of the present embodiment having a voltage of 110 V and a power of 85 W was measured, the color temperature was 3335.
It was confirmed that the luminous flux was K, and the luminous flux was improved by 15% as compared with the conventional one in which only the red light was cut. The color temperature of the conventional halogen bulb was 2850K.
【００１９】フィラメントから放出された光の多層干渉
膜に入射する角度は、バルブが回転楕円体１ａを有して
いるので垂直近くになる割合が高くなり、赤外線をフィ
ラメントに戻す割合が増加し、目的の色温度の高い光を
放出し、赤外線のフィラメント帰還率が高くなり光束も
増加する。Since the bulb has the spheroid 1a, the incident angle of the light emitted from the filament to the multilayer interference film becomes nearly vertical, and the ratio of returning infrared rays to the filament increases. It emits light having a high target color temperature, the filament return rate of infrared rays becomes high, and the luminous flux also increases.
【００２０】以上のように、本発明のハロゲン電球は、
従来のハロゲン電球と比較して光束が上昇したことを確
認できた。As described above, the halogen bulb of the present invention is
It was confirmed that the luminous flux increased as compared with the conventional halogen bulb.
【００２１】なお、上記した多層干渉膜の高屈折率層と
してＴｉＯ2、低屈折率層としてＳｉＯ2を用いたが、こ
の他に高屈折率層として、酸化タンタル（ＴａＯ2）、
酸化ジルコン（ＺｒＯ2）を、低屈折率層として、酸化
セレン（ＳｅＯ2）等がある。また、多層干渉膜の形成
方法として、真空蒸着法、スパッタ法、ＣＶＤ法、およ
び、ゾル−ゲル法（ディップ法、スプレー法）等があ
り、これらどれを用いて形成してもよい。[0021] Incidentally, TiO 2 as a high refractive index layer of the multilayer interference film as described above, was used SiO 2 as a low refractive index layer, as this addition to the high refractive index layer, tantalum oxide (TaO 2),
Zircon oxide (ZrO 2 ) may be used as the low refractive index layer, such as selenium oxide (SeO 2 ). Further, as a method for forming the multilayer interference film, there are a vacuum vapor deposition method, a sputtering method, a CVD method, a sol-gel method (a dipping method, a spraying method) and the like, and any of these may be used.
【００２２】[0022]
【発明の効果】以上説明したように、本発明のハロゲン
電球は、回転楕円体を有するバルブ内に、このバルブの
２つの焦点と両端とが一致するようにフィラメントが設
けられ、さらに前記バルブの表面に高屈折率層と低屈折
率層とを交互に積層してなる多層干渉膜が形成されてお
り、前記多層干渉膜は赤色光および赤外線を反射する構
成を有することによって、色温度を高くでき、光束を向
上することができる。As described above, in the halogen bulb of the present invention, the bulb having the spheroid is provided with the filaments so that the two focal points of the bulb and the both ends of the bulb coincide with each other. A multilayer interference film formed by alternately stacking a high refractive index layer and a low refractive index layer is formed on the surface, and the multilayer interference film has a structure that reflects red light and infrared light, thereby increasing the color temperature. Therefore, the luminous flux can be improved.
【図１】本発明の一実施例であるハロゲン電球の正面断
面図FIG. 1 is a front sectional view of a halogen bulb according to an embodiment of the present invention.
【図２】同じく要部断面図FIG. 2 is a sectional view of the same main part.
【図３】同じく分光透過率曲線[FIG. 3] Similarly, a spectral transmittance curve
１ バルブ ２ フィラメント ３ 多層干渉膜 1 bulb 2 filament 3 multilayer interference film
Claims (1)
ルブの２つの焦点と両端とが一致するようにフィラメン
トが設けられ、さらに前記バルブの表面に高屈折率層と
低屈折率層とを交互に積層してなる多層干渉膜が形成さ
れており、前記多層干渉膜は赤色光および赤外線を反射
することを特徴とするハロゲン電球。1. A bulb having a spheroid is provided with filaments so that two focal points of the bulb coincide with both ends, and a high-refractive index layer and a low-refractive index layer are provided on the surface of the bulb. A halogen light bulb characterized in that a multilayer interference film formed by alternately stacking is formed, and the multilayer interference film reflects red light and infrared light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21241094A JPH0877980A (en) | 1994-09-06 | 1994-09-06 | Halogen lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21241094A JPH0877980A (en) | 1994-09-06 | 1994-09-06 | Halogen lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0877980A true JPH0877980A (en) | 1996-03-22 |
Family
ID=16622130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21241094A Pending JPH0877980A (en) | 1994-09-06 | 1994-09-06 | Halogen lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0877980A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6356020B1 (en) * | 1998-07-06 | 2002-03-12 | U.S. Philips Corporation | Electric lamp with optical interference coating |
| GB2385679A (en) * | 2002-02-25 | 2003-08-27 | Gen Electric | Visible light and infrared reflective coating for electric lamp |
-
1994
- 1994-09-06 JP JP21241094A patent/JPH0877980A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6356020B1 (en) * | 1998-07-06 | 2002-03-12 | U.S. Philips Corporation | Electric lamp with optical interference coating |
| GB2385679A (en) * | 2002-02-25 | 2003-08-27 | Gen Electric | Visible light and infrared reflective coating for electric lamp |
| GB2385679B (en) * | 2002-02-25 | 2005-10-05 | Gen Electric | Visible light and infrared reflective coating for electric lamps and lamps incorporating such a coating |
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