WO1994023441A1 - Metallhalogenid-hochdruckentladungslampe für den einbau in optische systeme - Google Patents
Metallhalogenid-hochdruckentladungslampe für den einbau in optische systeme Download PDFInfo
- Publication number
- WO1994023441A1 WO1994023441A1 PCT/DE1994/000343 DE9400343W WO9423441A1 WO 1994023441 A1 WO1994023441 A1 WO 1994023441A1 DE 9400343 W DE9400343 W DE 9400343W WO 9423441 A1 WO9423441 A1 WO 9423441A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- metal halide
- discharge lamp
- pressure discharge
- per
- dysprosium
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/82—Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr
- H01J61/827—Metal halide arc lamps
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
- H01J61/125—Selection of substances for gas fillings; Specified operating pressure or temperature having an halogenide as principal component
Definitions
- the invention relates to a metal halide high-pressure discharge lamp with an average arc output of between 60 and 140 W / mm arc length for installation in optical systems according to the preamble of claim 1.
- Metal halide high-pressure discharge lamps of this type are used in particular in projection (slide, overhead, narrow film and cinema projection) and glass fiber lighting systems (endoscopy, microscopy, effect lighting for film and television), where light with color temperatures between 4000 and 7000 K and good or very good color rendering is required in all color temperature ranges. They are characterized by a very short arc (a few mm) and extremely high luminance (on average a few 10 kcd / cm 2 ), which makes them ideal for installation in reflectors or other optically imaging systems.
- Metal halide high-pressure discharge lamps with short arcs and correspondingly high luminance are known from EP 0 193 086 and DE-A 4 040 858, which emit light with a spectral composition similar to daylight.
- EP 0 193 086 and DE-A 4 040 858 which emit light with a spectral composition similar to daylight.
- the object of the invention is to provide a metal halide high-pressure discharge lamp which has an average lifespan of at least 1000 hours, has a very short arc with very high luminance and a color temperature between 4000 and 7000 K - with very good Color rendering - has and achieved this goal with as few elements in the filling.
- the metal halide high-pressure discharge lamp according to the invention is operated at specific arc powers between 60 and 140 W per mm arc length and comparatively low wall loads between 40 and 85 W per cm 2 wall area.
- bulb blackening or devitrification occurs after a short time at wall loads below or above about 60 W per cm 2 , the value for this limit varying depending on the cooling. As a result, the usable luminous flux drops and the lamp life is limited.
- the filling of the lamp according to the invention which consists of mercury, at least one noble gas and at least one halogen and cesium, is tantalum and dysprosium, advantageously added with a weight ratio between 0.3 and 1.5, the sum of the fill quantities of these two important additives advantageously being between 0.2 and 1.5 mg per cm 3 of vessel volume.
- Tantalum maintains the halogen cycle process even with relatively low wall loads and thus largely prevents blackening and devitrification of the bulb, so that a long average service life can be achieved. Tantalum also contributes to the continuum portion in the optical spectrum. With its multi-line spectrum, Dysprosium ensures a high radiation flux in the visible range of the optical spectrum.
- the addition of tantalum and dysprosium according to the invention thus minimizes the tendency to devitrification and blackening of the bulb - ie the average life is extended accordingly - and the luminous flux and the color rendering are optimized.
- lithium up to 0.2 mg per cm 3 of vessel volume can optionally be added, which increases the amount of rot in the radiation, which is particularly the case when the lamp is used in a dichroic Cold light reflector can be advantageous, which slightly increases the color temperature of the reflected radiation compared to the total radiation of the discharge.
- lithium is an atomic line radiator, which preferably radiates in the hot arc core and is therefore radiated particularly efficiently by correspondingly focusing special reflectors which only depict the inner arc core.
- the discharge vessel can contain up to 0.8 mg per cm 3 of vessel volume.
- halogens iodine and bromine are advantageously used in a molar ratio between 0.2 and 2.
- the figure shows a sectional side view of a metal halide high-pressure discharge lamp according to the invention
- a metal halide discharge lamp 1 according to the invention with a power consumption of 400 W is shown schematically (not to scale) as it can be used in a reflector system.
- the discharge vessel 2 made of quartz glass has an essentially spherical shape and has a neck 3, 4 at two diametrically opposed locations, into which pin-shaped tungsten electrodes 5, 6 are melted by means of sealing foils 7, 8 made of molybdenum .
- the ends of the sealing foils 7, 8 facing away from the discharge space are welded to power supply lines 9, 10, which are connected to the electrical connections in the reflector when installed in a reflector system.
- Table 1 shows two fillings according to the invention of the discharge vessel 2 of a 400 W lamp and the lifetimes achieved in each case as well as the lighting data of this lamp. By adding lithium in the filling 2, the color temperature is reduced by approximately 500 K compared to filling 1. Table 1
- Luminous efficacy in lm / W 70 69 average luminance in kcd / cm 2 30 30
- a further exemplary embodiment relates to a metal halide discharge lamp according to the invention with a power consumption of 270 W. Its structure differs from that of the lamp shown in the figure essentially only by a smaller discharge volume and a shorter electrode spacing and is therefore not illustrated.
- Table 2 shows a filling according to the invention of the discharge vessel of a 270 W lamp and the light-technical data of this lamp.
- Luminous efficacy 70 lm / W average luminance 35 kcd / cm 2
Landscapes
- Discharge Lamp (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/525,758 US5635796A (en) | 1993-03-31 | 1994-03-25 | High-pressure discharge lamp including halides of tantalum and dysprosium |
JP51842994A JP3447293B2 (ja) | 1993-03-31 | 1994-03-25 | 光学系内に組込むためのメタルハライド高圧放電ランプ |
DE59406224T DE59406224D1 (de) | 1993-03-31 | 1994-03-25 | Metallhalogenid-hochdruckentladungslampe für den einbau in optische systeme |
EP94911079A EP0692139B1 (de) | 1993-03-31 | 1994-03-25 | Metallhalogenid-hochdruckentladungslampe für den einbau in optische systeme |
KR1019950704180A KR100313740B1 (ko) | 1993-03-31 | 1994-03-25 | 광학시스템용고압금속할로겐화물방전등 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP4310539.4 | 1993-03-31 | ||
DE4310539A DE4310539A1 (de) | 1993-03-31 | 1993-03-31 | Metallhalogenid-Hochdruckentladungslampe für den Einbau in optische Systeme |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994023441A1 true WO1994023441A1 (de) | 1994-10-13 |
Family
ID=6484375
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1994/000343 WO1994023441A1 (de) | 1993-03-31 | 1994-03-25 | Metallhalogenid-hochdruckentladungslampe für den einbau in optische systeme |
Country Status (7)
Country | Link |
---|---|
US (1) | US5635796A (de) |
EP (1) | EP0692139B1 (de) |
JP (1) | JP3447293B2 (de) |
KR (1) | KR100313740B1 (de) |
CN (1) | CN1061171C (de) |
DE (2) | DE4310539A1 (de) |
WO (1) | WO1994023441A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5831388A (en) * | 1995-08-23 | 1998-11-03 | Patent-Truehand-Gesellschaftfuer Elektrische Gluelampen Mbh | Rare earth metal halide lamp including niobium |
RU2713914C1 (ru) * | 2019-08-13 | 2020-02-11 | Федеральное государственное бюджетное образовательное учреждение высшего образования "МИРЭА - Российский технологический университет" | Имитатор солнечного излучения |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5985303A (en) * | 1995-08-11 | 1999-11-16 | Okada; Toru | Shelf-life extender for food use |
JP3200575B2 (ja) * | 1997-09-01 | 2001-08-20 | フェニックス電機株式会社 | メタルハライドランプ |
JP4297227B2 (ja) * | 1998-07-24 | 2009-07-15 | ハリソン東芝ライティング株式会社 | 高圧放電ランプおよび照明装置 |
US6759806B2 (en) * | 2000-03-13 | 2004-07-06 | Nec Microwave Tube, Ltd. | High pressure discharge lamp and method for sealing a bulb thereof |
CN101248512B (zh) * | 2005-03-31 | 2010-11-24 | 皇家飞利浦电子股份有限公司 | 高强度放电灯 |
DE102005026208A1 (de) * | 2005-06-07 | 2006-12-14 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Metallhalogenid-Hochdruckentladungslampe |
DE102005026207A1 (de) * | 2005-06-07 | 2006-12-14 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Metallhalogenid-Hochdruckentladungslampe |
ES2434770T3 (es) * | 2010-04-08 | 2013-12-17 | Flowil International Lighting (Holding) B.V. | Lámpara HID regulable de arco corto con color constante durante la regulación |
KR102080279B1 (ko) | 2018-03-15 | 2020-02-24 | 이영덕 | 전구의 착탈이 용이한 인테리어 조명등 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4229673A (en) * | 1979-01-18 | 1980-10-21 | Westinghouse Electric Corp. | Mercury metal-halide lamp including neodymium iodide, cesium and sodium iodide |
EP0193086A2 (de) * | 1985-02-22 | 1986-09-03 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Kompakte Hochdruckentladungslampe |
EP0386601A2 (de) * | 1989-03-10 | 1990-09-12 | General Electric Company | Reprographische Metallhalogenidlampen mit langer Lebensdauer und Erhaltung |
EP0492205A2 (de) * | 1990-12-20 | 1992-07-01 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Metallhalogenid-Hochdruckentladungslampe |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3521110A (en) * | 1967-09-25 | 1970-07-21 | Gen Electric | Mercury-metallic halide vapor lamp with regenerative cycle |
US3761758A (en) * | 1972-01-27 | 1973-09-25 | Gte Sylvania Inc | Metal halide lamp containing mercury, light emitting metal, sodium and another alkali metal |
JPS57172649A (en) * | 1981-04-17 | 1982-10-23 | Mitsubishi Electric Corp | Non-electrode electric-discharge lamp |
JPS58175251A (ja) * | 1982-04-07 | 1983-10-14 | Hitachi Ltd | 高輝度紫外線光源 |
US4810938A (en) * | 1987-10-01 | 1989-03-07 | General Electric Company | High efficacy electrodeless high intensity discharge lamp |
US4978884A (en) * | 1988-05-19 | 1990-12-18 | U.S. Phillips Corporation | Metal halide discharge lamp having low color temperature and improved color rendition |
JP2650463B2 (ja) * | 1989-05-31 | 1997-09-03 | 岩崎電気株式会社 | メタルハライドランプ |
US4968916A (en) * | 1989-09-08 | 1990-11-06 | General Electric Company | Xenon-metal halide lamp particularly suited for automotive applications having an improved electrode structure |
KR950001852A (ko) * | 1993-06-01 | 1995-01-04 | 에프.제이.스미트 | 고압금속 할로겐 램프 |
-
1993
- 1993-03-31 DE DE4310539A patent/DE4310539A1/de not_active Withdrawn
-
1994
- 1994-03-25 JP JP51842994A patent/JP3447293B2/ja not_active Expired - Lifetime
- 1994-03-25 CN CN94191666A patent/CN1061171C/zh not_active Expired - Fee Related
- 1994-03-25 DE DE59406224T patent/DE59406224D1/de not_active Expired - Fee Related
- 1994-03-25 WO PCT/DE1994/000343 patent/WO1994023441A1/de active IP Right Grant
- 1994-03-25 US US08/525,758 patent/US5635796A/en not_active Expired - Lifetime
- 1994-03-25 KR KR1019950704180A patent/KR100313740B1/ko not_active IP Right Cessation
- 1994-03-25 EP EP94911079A patent/EP0692139B1/de not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4229673A (en) * | 1979-01-18 | 1980-10-21 | Westinghouse Electric Corp. | Mercury metal-halide lamp including neodymium iodide, cesium and sodium iodide |
EP0193086A2 (de) * | 1985-02-22 | 1986-09-03 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Kompakte Hochdruckentladungslampe |
EP0386601A2 (de) * | 1989-03-10 | 1990-09-12 | General Electric Company | Reprographische Metallhalogenidlampen mit langer Lebensdauer und Erhaltung |
EP0492205A2 (de) * | 1990-12-20 | 1992-07-01 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Metallhalogenid-Hochdruckentladungslampe |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5831388A (en) * | 1995-08-23 | 1998-11-03 | Patent-Truehand-Gesellschaftfuer Elektrische Gluelampen Mbh | Rare earth metal halide lamp including niobium |
RU2713914C1 (ru) * | 2019-08-13 | 2020-02-11 | Федеральное государственное бюджетное образовательное учреждение высшего образования "МИРЭА - Российский технологический университет" | Имитатор солнечного излучения |
Also Published As
Publication number | Publication date |
---|---|
DE4310539A1 (de) | 1994-10-06 |
DE59406224D1 (de) | 1998-07-16 |
CN1120374A (zh) | 1996-04-10 |
JPH08508130A (ja) | 1996-08-27 |
KR960701462A (ko) | 1996-02-24 |
US5635796A (en) | 1997-06-03 |
JP3447293B2 (ja) | 2003-09-16 |
EP0692139A1 (de) | 1996-01-17 |
EP0692139B1 (de) | 1998-06-10 |
CN1061171C (zh) | 2001-01-24 |
KR100313740B1 (ko) | 2001-12-28 |
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