CA2087778C - High temperature lamps having uv absorbing quartz envelope - Google Patents
High temperature lamps having uv absorbing quartz envelopeInfo
- Publication number
- CA2087778C CA2087778C CA002087778A CA2087778A CA2087778C CA 2087778 C CA2087778 C CA 2087778C CA 002087778 A CA002087778 A CA 002087778A CA 2087778 A CA2087778 A CA 2087778A CA 2087778 C CA2087778 C CA 2087778C
- Authority
- CA
- Canada
- Prior art keywords
- lamp
- envelope
- radiation
- visible light
- fused quartz
- 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.)
- Expired - Fee Related
Links
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 239000010453 quartz Substances 0.000 title claims abstract description 21
- 239000005350 fused silica glass Substances 0.000 claims abstract description 61
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 56
- 230000005855 radiation Effects 0.000 claims abstract description 38
- 229910000420 cerium oxide Inorganic materials 0.000 claims abstract description 27
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 27
- 238000010891 electric arc Methods 0.000 claims abstract description 20
- 229910001507 metal halide Inorganic materials 0.000 claims abstract description 10
- 150000005309 metal halides Chemical class 0.000 claims abstract description 9
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 17
- 239000010936 titanium Substances 0.000 claims description 17
- 229910052719 titanium Inorganic materials 0.000 claims description 16
- 229910052684 Cerium Inorganic materials 0.000 claims description 15
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 15
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 claims description 6
- 229910052736 halogen Inorganic materials 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 claims description 4
- 150000002367 halogens Chemical class 0.000 claims description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical group [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims 1
- 229910052721 tungsten Inorganic materials 0.000 claims 1
- 239000010937 tungsten Substances 0.000 claims 1
- 239000002019 doping agent Substances 0.000 abstract description 10
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 6
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 4
- 239000011888 foil Substances 0.000 description 4
- 229910052750 molybdenum Inorganic materials 0.000 description 4
- 239000011733 molybdenum Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000000295 emission spectrum Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000000411 transmission spectrum Methods 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 206010015150 Erythema Diseases 0.000 description 1
- 101000891845 Homo sapiens Protein FAM3C Proteins 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 206010073310 Occupational exposures Diseases 0.000 description 1
- 102100040823 Protein FAM3C Human genes 0.000 description 1
- 241001255830 Thema Species 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 230000032900 absorption of visible light Effects 0.000 description 1
- -1 alkoxide Chemical class 0.000 description 1
- 150000004703 alkoxides Chemical class 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004031 devitrification Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 231100000321 erythema Toxicity 0.000 description 1
- 231100000040 eye damage Toxicity 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 101150097994 hagh gene Proteins 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052756 noble gas Inorganic materials 0.000 description 1
- 150000002835 noble gases Chemical class 0.000 description 1
- 231100000675 occupational exposure Toxicity 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 150000002902 organometallic compounds Chemical class 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- HUIHCQPFSRNMNM-UHFFFAOYSA-K scandium(3+);triiodide Chemical class [Sc+3].[I-].[I-].[I-] HUIHCQPFSRNMNM-UHFFFAOYSA-K 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000002211 ultraviolet spectrum Methods 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/30—Vessels; Containers
- H01J61/302—Vessels; Containers characterised by the material of the vessel
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/38—Devices for influencing the colour or wavelength of the light
- H01J61/40—Devices for influencing the colour or wavelength of the light by light filters; by coloured coatings in or on the envelope
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08843660 US5196759B1 (en) | 1992-02-28 | 1992-02-28 | High temperature lamps having UV absorbing quartz envelope |
US843,660 | 1992-02-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2087778A1 CA2087778A1 (en) | 1993-08-29 |
CA2087778C true CA2087778C (en) | 1999-08-24 |
Family
ID=25290640
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002087778A Expired - Fee Related CA2087778C (en) | 1992-02-28 | 1993-01-21 | High temperature lamps having uv absorbing quartz envelope |
Country Status (9)
Country | Link |
---|---|
US (1) | US5196759B1 (en, 2012) |
EP (1) | EP0558270B1 (en, 2012) |
JP (1) | JP2589043B2 (en, 2012) |
KR (1) | KR0140754B1 (en, 2012) |
CA (1) | CA2087778C (en, 2012) |
DE (1) | DE69334338D1 (en, 2012) |
ES (1) | ES2347615T3 (en, 2012) |
MX (1) | MX9301109A (en, 2012) |
TW (1) | TW227621B (en, 2012) |
Families Citing this family (43)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5569979A (en) * | 1992-02-28 | 1996-10-29 | General Electric Company | UV absorbing fused quartz and its use for lamp envelopes |
TW226472B (en, 2012) * | 1992-06-01 | 1994-07-11 | Gen Electric | |
CA2112063A1 (en) * | 1992-12-22 | 1994-06-23 | Robert Guy Jenkins | Metal halide lamp |
DE4317369A1 (de) * | 1993-05-25 | 1994-12-01 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Hochdruckentladungslampe und Herstellungsverfahren für eine Hochdruckentladungslampe |
US5631522A (en) * | 1995-05-09 | 1997-05-20 | General Electric Company | Low sodium permeability glass |
US6136736A (en) * | 1993-06-01 | 2000-10-24 | General Electric Company | Doped silica glass |
DE4318905A1 (de) * | 1993-06-07 | 1994-12-08 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Metallhalogenidentladungslampe und Verfahren zu ihrer Herstellung |
JP3367167B2 (ja) * | 1993-10-26 | 2003-01-14 | 株式会社ニコン | 照明光学装置、該装置に使用される放電ランプ、及び露光装置 |
BE1007870A3 (nl) * | 1993-12-14 | 1995-11-07 | Philips Electronics Nv | Elektrische lamp. |
TW323379B (en, 2012) * | 1994-01-18 | 1997-12-21 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | |
DE19505617C2 (de) * | 1994-04-19 | 1997-04-10 | Quarzschmelze Ilmenau Gmbh | Ultraviolettes Licht absorbierendes Quarzglas und dessen Verwendung |
US5808411A (en) * | 1994-05-25 | 1998-09-15 | Patent-Treuhand-Gesellschaft F. Elektrische Gluehlampen Mbh | Fluorescence-suppressed quartz glass, and electric lamp with this quartz glass |
DE4418198A1 (de) | 1994-05-25 | 1995-11-30 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Quarzglas und elektrische Lampe mit Bestandteilen aus Quarzglas |
JP2863095B2 (ja) * | 1994-08-17 | 1999-03-03 | 矢崎総業株式会社 | 圧接コネクタ |
US5952768A (en) * | 1994-10-31 | 1999-09-14 | General Electric Company | Transparent heat conserving coating for metal halide arc tubes |
US5541470A (en) * | 1994-12-02 | 1996-07-30 | Osram Sylvania Inc. | Method for making a tantala/silica interference filter on a vitreous substrate and an electric lamp made thereby |
US5658612A (en) * | 1995-09-29 | 1997-08-19 | Osram Sylvania Inc. | Method for making a tantala/silica interference filter on the surface of a tungsten-halogen incandescent lamp |
DE69900804T3 (de) | 1998-06-12 | 2007-07-12 | Matsushita Electric Industrial Co., Ltd., Kadoma | Entladungslampe |
DE19826809A1 (de) * | 1998-06-16 | 1999-12-23 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Dielektrische Schicht für Entladungslampen und zugehöriges Herstellungsverfahren |
JP3655126B2 (ja) * | 1999-06-14 | 2005-06-02 | 株式会社小糸製作所 | メタルハライドランプ |
KR100364545B1 (ko) * | 2000-12-18 | 2002-12-18 | 엘지전자 주식회사 | 마이크로파를 이용한 조명기구의 공진기 보호 장치 |
DE10141961A1 (de) * | 2001-08-28 | 2003-03-20 | Philips Corp Intellectual Pty | Entladungslampe und Außenkolben hierfür |
DE10204150A1 (de) * | 2002-02-01 | 2003-08-14 | Schott Glas | Erdalkalialuminosilicatglas und Verwendung |
US7352118B2 (en) * | 2003-12-10 | 2008-04-01 | General Electric Company | Optimized ultraviolet reflecting multi-layer coating for energy efficient lamps |
DE202004019471U1 (de) * | 2004-12-15 | 2006-04-20 | Weth, Gosbert, Dr. med. Dr. rer. nat. | Therapeutisch wirksame Lampe |
JP2008526675A (ja) * | 2005-01-04 | 2008-07-24 | ショット・アーゲー | 外部電極を有する発光手段のためのガラス |
US20070262720A1 (en) * | 2006-05-15 | 2007-11-15 | Deeder Aurongzeb | High temperature lead-free paint composition for UV-control lamps |
US9399000B2 (en) | 2006-06-20 | 2016-07-26 | Momentive Performance Materials, Inc. | Fused quartz tubing for pharmaceutical packaging |
US20080170384A1 (en) * | 2007-01-11 | 2008-07-17 | Zhu Jing Jim | Lamp |
DE102009056753A1 (de) * | 2009-12-04 | 2011-06-09 | Heraeus Noblelight Gmbh | Elektrische Hochdruckentladungslampe für kosmetische Hautbehandlung |
US9072521B2 (en) * | 2012-06-08 | 2015-07-07 | Home Skinovations Ltd. | Non-invasive device for treating body tissue |
CN104961466B (zh) * | 2015-06-10 | 2017-09-29 | 武汉理工大学 | 一种具有紫外滤过能力的稀土离子掺杂MgAlON透明陶瓷材料的制备方法 |
KR20180095624A (ko) | 2015-12-18 | 2018-08-27 | 헤래우스 크바르츠글라스 게엠베하 & 컴파니 케이지 | 불투명 실리카 유리 제품의 제조 |
CN108698893A (zh) | 2015-12-18 | 2018-10-23 | 贺利氏石英玻璃有限两合公司 | 于耐火金属熔融坩埚中制备石英玻璃体 |
EP3390303B1 (de) | 2015-12-18 | 2024-02-07 | Heraeus Quarzglas GmbH & Co. KG | Herstellung von quarzglaskörpern mit taupunktkontrolle im schmelzofen |
EP3390293B1 (de) | 2015-12-18 | 2023-04-19 | Heraeus Quarzglas GmbH & Co. KG | Erhöhen des siliziumgehalts bei der herstellung von quarzglas |
CN108698894A (zh) | 2015-12-18 | 2018-10-23 | 贺利氏石英玻璃有限两合公司 | 在多腔式烘箱中制备石英玻璃体 |
TWI794150B (zh) | 2015-12-18 | 2023-03-01 | 德商何瑞斯廓格拉斯公司 | 自二氧化矽顆粒製備石英玻璃體 |
KR20180095879A (ko) | 2015-12-18 | 2018-08-28 | 헤래우스 크바르츠글라스 게엠베하 & 컴파니 케이지 | 상승된 온도에서 탄소-도핑된 실리카 과립을 처리하여 실리카 과립의 알칼리 토금속 함량의 감소 |
US10676388B2 (en) | 2015-12-18 | 2020-06-09 | Heraeus Quarzglas Gmbh & Co. Kg | Glass fibers and pre-forms made of homogeneous quartz glass |
WO2017103125A1 (de) | 2015-12-18 | 2017-06-22 | Heraeus Quarzglas Gmbh & Co. Kg | Sprühgranulieren von siliziumdioxid bei der herstellung von quarzglas |
EP3390292B1 (de) | 2015-12-18 | 2023-03-15 | Heraeus Quarzglas GmbH & Co. KG | Herstellung einer synthetischen quarzglaskörnung |
CN110600351B (zh) * | 2019-11-01 | 2022-03-04 | 深圳市飞梵实业有限公司 | 一种可以防止惰性气体在更换灯芯时流失的隧道钠灯 |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2774903A (en) * | 1951-01-17 | 1956-12-18 | Sylvania Electric Prod | Non-actinic fluorescent lamp |
NL91490C (en, 2012) * | 1954-05-26 | 1900-01-01 | ||
US2924636A (en) * | 1956-10-24 | 1960-02-09 | Gen Electric | Glass component for electrical apparatus |
US3148300A (en) * | 1961-08-04 | 1964-09-08 | Gen Electric | Lamp having envelope of glass opaque to ultraviolet radiation |
NL289728A (en, 2012) * | 1962-03-15 | |||
US3531677A (en) * | 1966-12-14 | 1970-09-29 | Sylvania Electric Prod | Quartz glass envelope with radiation-absorbing glaze |
US3848152A (en) * | 1972-06-06 | 1974-11-12 | Corning Glass Works | Electric lamp having a fused silica glass envelope |
JPS5289280A (en) * | 1976-01-21 | 1977-07-26 | Toshiba Ceramics Co | Inner bulb for mercury lamp |
JPS54113986A (en) * | 1978-02-24 | 1979-09-05 | Ushio Electric Inc | Incandescent lamp for fishery |
NL8000298A (nl) * | 1980-01-17 | 1981-08-17 | Philips Nv | Lamp voorzien van een lampvat uit kwartsglas, kwartsglas en werkwijze voor het bereiden van kwartsglas. |
JPS57113550A (en) * | 1981-01-06 | 1982-07-15 | Toshiba Corp | Discharge lamp |
JPS5946899A (ja) * | 1982-09-10 | 1984-03-16 | 株式会社荏原製作所 | 放射性廃棄物の処理方法 |
US4652790A (en) * | 1985-11-12 | 1987-03-24 | Fusion Systems Corporation | Electrodeless discharge lamp |
FR2599890B1 (fr) * | 1986-06-09 | 1990-02-02 | Ushio Electric Inc | Enveloppe en silice fondue pour lampe a decharge |
JPS6380458A (ja) * | 1986-09-25 | 1988-04-11 | Ushio Inc | 発光管用石英 |
US4935668A (en) * | 1988-02-18 | 1990-06-19 | General Electric Company | Metal halide lamp having vacuum shroud for improved performance |
JPH03101045A (ja) * | 1989-09-14 | 1991-04-25 | Iwasaki Electric Co Ltd | メタルハライドランプ |
-
1992
- 1992-02-28 US US08843660 patent/US5196759B1/en not_active Expired - Lifetime
- 1992-11-17 TW TW081109177A patent/TW227621B/zh not_active IP Right Cessation
-
1993
- 1993-01-21 CA CA002087778A patent/CA2087778C/en not_active Expired - Fee Related
- 1993-02-23 EP EP93301316A patent/EP0558270B1/en not_active Expired - Lifetime
- 1993-02-23 DE DE69334338T patent/DE69334338D1/de not_active Expired - Lifetime
- 1993-02-23 ES ES93301316T patent/ES2347615T3/es not_active Expired - Lifetime
- 1993-02-24 JP JP5033812A patent/JP2589043B2/ja not_active Expired - Lifetime
- 1993-02-26 MX MX9301109A patent/MX9301109A/es not_active Application Discontinuation
- 1993-02-27 KR KR1019930002884A patent/KR0140754B1/ko not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
TW227621B (en, 2012) | 1994-08-01 |
ES2347615T3 (es) | 2010-11-02 |
US5196759B1 (en) | 1996-09-24 |
EP0558270B1 (en) | 2010-07-28 |
US5196759A (en) | 1993-03-23 |
JP2589043B2 (ja) | 1997-03-12 |
CA2087778A1 (en) | 1993-08-29 |
EP0558270A1 (en) | 1993-09-01 |
KR930018644A (ko) | 1993-09-22 |
MX9301109A (es) | 1993-09-01 |
KR0140754B1 (ko) | 1998-07-01 |
DE69334338D1 (de) | 2010-09-09 |
JPH0613056A (ja) | 1994-01-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2087778C (en) | High temperature lamps having uv absorbing quartz envelope | |
US5569979A (en) | UV absorbing fused quartz and its use for lamp envelopes | |
CA2106130C (en) | Quartz glass with reduced ultraviolet radiation transmissivity, method of its manufacture, and electrical discharge lamp using such glass | |
EP0574158A1 (en) | UV absorbing fused quartz and its use for lamp envelopes | |
EP0917524A1 (en) | Lead and arsenic free borosilicate glass and lamp containing same | |
JP2008543022A (ja) | 特に高圧放電灯などの外套管付き照明装置 | |
HUT67977A (en) | Uv absorbing lamp glass used for lamp envelopes and decreased uv emitting lamp | |
EP0797548B1 (en) | Electric incandescent lamp with a quartz glass lamp vessel | |
JP3727079B2 (ja) | ランプ | |
JPH0762998B2 (ja) | 電 灯 | |
JP3993650B2 (ja) | 石英ガラス | |
JP5784138B2 (ja) | ランプ組み立てのためのガラス物品 | |
JPH0769671A (ja) | 紫外線吸収性シリカガラスおよびその製造方法 | |
US7105989B2 (en) | Plasma lamp and method | |
KR20060073953A (ko) | 알루미늄 산화물 및 세륨 산화물을 포함하는 전기 램프 | |
JPH0494053A (ja) | メタルハライドランプ |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |