EP2342735A1 - Keramische metallhalogenidlampe mit hoher farbtemperatur - Google Patents
Keramische metallhalogenidlampe mit hoher farbtemperaturInfo
- Publication number
- EP2342735A1 EP2342735A1 EP09745011A EP09745011A EP2342735A1 EP 2342735 A1 EP2342735 A1 EP 2342735A1 EP 09745011 A EP09745011 A EP 09745011A EP 09745011 A EP09745011 A EP 09745011A EP 2342735 A1 EP2342735 A1 EP 2342735A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure discharge
- discharge lamp
- lamp according
- halides
- color temperature
- 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.)
- Withdrawn
Links
Classifications
-
- 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 high-pressure discharge lamp according to the preamble of claim 1.
- Such lamps are in particular high-pressure discharge lamps with ceramic discharge vessel or quartz glass vessel for general lighting.
- EP 1 153 415B1 discloses a high pressure discharge lamp using a metal halide fill.
- the high pressure discharge lamp uses a filling of Na or Li together with Hg and TbJ3.
- the color temperature lies in the range Daylight between 4825 and 7070 K.
- the CRI lies with 87 to 93.
- the efficiency is only 61 to 76 lm / W.
- JP 51-086281 which uses NaJ, GdJ3 and TlJ together with Hg and Ar.
- the object of the present invention is to provide a metal halide high pressure discharge lamp which achieves a daylight color temperature of at least 5000K.
- a filling for the light color Daylight preferably 5500 to 6500 K, is now used, which uses halides of Na and Tm as well as Gd as metal halides.
- the E n t 1 a n g s e f äs is made of ceramics.
- the aspect ratio (internal length / inner diameter) is preferably between 2 and 8.
- the filling gas used is noble gas, preferably xenon or argon, at a pressure of between 50 and 500 hPa (cold). In general, it is also possible with preference to use a noble gas mixture which comprises xenon, alone or predominantly. Xenon produces slightly more light output compared to argon due to lower heat losses (about 1 to 3 lm / W), but is more expensive than argon.
- the wall load measured in the region between the electrodes is preferably between 20 and 40 W / cm 2 .
- the filling contains as metal halide amounts of sodium and rare earths (SE). At least Tm and Gd are used as rare earths.
- the molar ratio between Gd and Tm is between 0.1 and 1, more preferably between 0.2 and 0.8.
- the molar ratio between the sum of all rare earths and natium is preferably between 0.2 and 5, particularly preferably between 0.3 and 3.
- SE rare earths
- Pr and / or Ho are suitable, the proportion of the total amount of SE being maximum each 10 mol .-% is.
- the filling may still contain In and Tl. Particularly preferred are 2 to 20 mol% of the filling In.
- the halogen used is iodine and / or bromine. More preferably, the molar fraction of bromine is less than 50%.
- the color temperature is in the daylight range from 5000 K, preferably 5500 to 6500 K.
- the color rendering is greater than 80 and the luminous efficiency is over 90 lm / W.
- the concept according to the invention is particularly suitable for lamps of low power in the range of 15 to 400 W.
- FIG. 2 shows a spectrum of the lamp from FIG. 1.
- a metal halide lamp 1 shows schematically a metal halide lamp 1. It consists of a discharge vessel 2 made of ceramic, in which two electrodes (not visible) are introduced.
- the discharge vessel has a central part 3 and two ends 4 with feedthroughs as known per se.
- the discharge volume has an aspect ratio of 5.
- the discharge vessel 2 is surrounded by an outer bulb 7.
- the discharge vessel 2 is in the outer bulb by means of a frame which a short and long power supply IIa -A-
- the discharge vessel contains a filling which typically comprises Hg (1 to 10 mg / cm 3 ) and 5 to 50 mg / cm 3 iodides of Tm, Tl, Na, In and Gd.
- a filling typically comprises Hg (1 to 10 mg / cm 3 ) and 5 to 50 mg / cm 3 iodides of Tm, Tl, Na, In and Gd.
- xenon is used cold under a pressure of 250 hPa.
- TlJ and InJ may be omitted.
- Possible additions to SE metals are still Ho and Pr.
- a spectrum of such a lamp is shown in Figure 2, where the relative radiant power is plotted against the wavelength.
- the spectrum provides an x value of 0.323 and a y value of 0.343.
- the color temperature is 5950 K.
- the color rendering index Ra is 81.
- the luminous efficacy is 91.5 lm / W.
Landscapes
- Discharge Lamp (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008056173A DE102008056173A1 (de) | 2008-11-06 | 2008-11-06 | Hochdruckentladungslampe |
PCT/EP2009/064032 WO2010052142A1 (de) | 2008-11-06 | 2009-10-26 | Keramische metallhalogenidlampe mit hoher farbtemperatur |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2342735A1 true EP2342735A1 (de) | 2011-07-13 |
Family
ID=41426165
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09745011A Withdrawn EP2342735A1 (de) | 2008-11-06 | 2009-10-26 | Keramische metallhalogenidlampe mit hoher farbtemperatur |
Country Status (6)
Country | Link |
---|---|
US (1) | US8569952B2 (de) |
EP (1) | EP2342735A1 (de) |
JP (1) | JP2012507836A (de) |
CN (1) | CN102203899B (de) |
DE (1) | DE102008056173A1 (de) |
WO (1) | WO2010052142A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011077302A1 (de) | 2011-06-09 | 2012-12-13 | Osram Ag | Hochdruckentladungslampe |
US9171712B2 (en) * | 2014-07-05 | 2015-10-27 | National Institute Of Standards And Technology | Lamp having a secondary halide that improves luminous efficiency |
US10692345B1 (en) | 2019-03-20 | 2020-06-23 | Bi Incorporated | Systems and methods for textural zone monitoring |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030020408A1 (en) * | 2001-06-27 | 2003-01-30 | Matsushita Electric Industrial Co., Ltd. | Metal halide lamp |
US20040189212A1 (en) * | 2003-03-03 | 2004-09-30 | Osram-Melco Toshiba Lighting Ltd. | High-intensity discharge lamp and related lighting device |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5186281U (de) | 1974-12-28 | 1976-07-10 | ||
JPS5186281A (ja) | 1975-01-24 | 1976-07-28 | Tokyo Shibaura Electric Co | Metaruharaidoranpu |
DE4040858A1 (de) | 1990-12-20 | 1992-06-25 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Metallhalogenid-hochdruckentladungslampe |
EP1153415B1 (de) | 1999-12-09 | 2007-01-31 | Koninklijke Philips Electronics N.V. | Metall halogen lampe |
JP3981301B2 (ja) | 2001-06-27 | 2007-09-26 | 松下電器産業株式会社 | メタルハライドランプ |
DE102006034833A1 (de) * | 2006-07-27 | 2008-01-31 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Hochdruckentladungslampe |
EP2074646A2 (de) * | 2006-09-29 | 2009-07-01 | Koninklijke Philips Electronics N.V. | Keramische metallhalogen-tageslichtlampe |
US7486026B2 (en) | 2006-11-09 | 2009-02-03 | General Electric Company | Discharge lamp with high color temperature |
ATE494628T1 (de) | 2007-04-20 | 2011-01-15 | Koninkl Philips Electronics Nv | Metallhalogenlampe mit ionisierbarer salzfüllung |
CN101743611B (zh) | 2007-07-16 | 2011-11-16 | 奥斯兰姆有限公司 | 高压放电灯 |
-
2008
- 2008-11-06 DE DE102008056173A patent/DE102008056173A1/de not_active Withdrawn
-
2009
- 2009-10-26 WO PCT/EP2009/064032 patent/WO2010052142A1/de active Application Filing
- 2009-10-26 US US13/127,498 patent/US8569952B2/en not_active Expired - Fee Related
- 2009-10-26 JP JP2011535071A patent/JP2012507836A/ja active Pending
- 2009-10-26 EP EP09745011A patent/EP2342735A1/de not_active Withdrawn
- 2009-10-26 CN CN200980144101.3A patent/CN102203899B/zh not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030020408A1 (en) * | 2001-06-27 | 2003-01-30 | Matsushita Electric Industrial Co., Ltd. | Metal halide lamp |
US20040189212A1 (en) * | 2003-03-03 | 2004-09-30 | Osram-Melco Toshiba Lighting Ltd. | High-intensity discharge lamp and related lighting device |
Non-Patent Citations (1)
Title |
---|
See also references of WO2010052142A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20110204776A1 (en) | 2011-08-25 |
US8569952B2 (en) | 2013-10-29 |
JP2012507836A (ja) | 2012-03-29 |
WO2010052142A1 (de) | 2010-05-14 |
CN102203899B (zh) | 2015-09-09 |
CN102203899A (zh) | 2011-09-28 |
DE102008056173A1 (de) | 2010-05-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20110331 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA RS |
|
DAX | Request for extension of the european patent (deleted) | ||
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: OSRAM AG |
|
17Q | First examination report despatched |
Effective date: 20120920 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: OSRAM GMBH |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: OSRAM GMBH |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20130131 |