HK1001986A1 - High pressure sodium vapor lamp with high color rendering. - Google Patents
High pressure sodium vapor lamp with high color rendering.Info
- Publication number
- HK1001986A1 HK1001986A1 HK98101044A HK98101044A HK1001986A1 HK 1001986 A1 HK1001986 A1 HK 1001986A1 HK 98101044 A HK98101044 A HK 98101044A HK 98101044 A HK98101044 A HK 98101044A HK 1001986 A1 HK1001986 A1 HK 1001986A1
- Authority
- HK
- Hong Kong
- Prior art keywords
- color rendering
- pressure sodium
- vapor lamp
- sodium vapor
- high pressure
- 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
- H01J61/82—Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr
- H01J61/825—High-pressure sodium lamps
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP874396 | 1996-01-22 | ||
JP10053196 | 1996-04-22 | ||
JP31023596 | 1996-11-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
HK1001986A1 true HK1001986A1 (en) | 1998-07-24 |
Family
ID=27278156
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HK98101044A HK1001986A1 (en) | 1996-01-22 | 1998-02-11 | High pressure sodium vapor lamp with high color rendering. |
Country Status (5)
Country | Link |
---|---|
US (1) | US5814944A (zh) |
EP (1) | EP0790639B1 (zh) |
CN (1) | CN1104738C (zh) |
DE (1) | DE69734075T2 (zh) |
HK (1) | HK1001986A1 (zh) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1083798A (ja) * | 1996-09-06 | 1998-03-31 | Matsushita Electric Ind Co Ltd | メタルハライドランプ |
US6268696B1 (en) | 1999-02-03 | 2001-07-31 | Osram Sylvania Inc. | Mercury and lead free high pressure sodium lamp |
CA2261380A1 (en) * | 1998-03-12 | 1999-09-12 | Osram Sylvania Inc. | Mercury and lead free high pressure sodium lamp |
DE19937312A1 (de) * | 1999-08-10 | 2001-02-15 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Quecksilberfreie Metallhalogenidlampe |
US6498429B1 (en) | 1999-11-15 | 2002-12-24 | General Electric Company | Sodium-xenon lamp with improved characteristics at end-of-life |
US6476566B2 (en) | 2000-12-27 | 2002-11-05 | Infocus Systems, Inc. | Method and apparatus for canceling ripple current in a lamp |
WO2005098902A2 (en) * | 2004-04-09 | 2005-10-20 | Koninklijke Philips Electronics N.V. | High-pressure sodium lamp |
DE202008007518U1 (de) | 2008-06-05 | 2008-08-21 | Osram Gesellschaft mit beschränkter Haftung | Hochdruckentladungslampe |
US20100078198A1 (en) * | 2008-08-13 | 2010-04-01 | John Richardson Harris | High Gradient Multilayer Vacuum Insulator |
JP2011179327A (ja) * | 2010-02-26 | 2011-09-15 | Mitsubishi Heavy Ind Ltd | 金属ナトリウム封入エンジンバルブの製造方法 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4911818B1 (zh) | 1969-08-29 | 1974-03-19 | ||
CH565736A5 (zh) * | 1972-03-16 | 1975-08-29 | Ciba Geigy Ag | |
NL181157C (nl) * | 1977-04-15 | 1987-06-16 | Philips Nv | Hogedruknatriumdampontladingslamp. |
JPS59130061A (ja) * | 1983-01-17 | 1984-07-26 | Hitachi Ltd | 高圧金属蒸気放電灯 |
GB8707670D0 (en) * | 1987-03-31 | 1987-05-07 | Emi Plc Thorn | Ceramic metal halide lamps |
JPS6477863A (en) * | 1987-09-18 | 1989-03-23 | Matsushita Electronics Corp | High pressure sodium lamp |
US5097176A (en) * | 1990-02-21 | 1992-03-17 | U.S. Philips Corporation | High-pressure sodium discharge lamp having a color temperature of at least 2800° K. |
JPH0536379A (ja) * | 1991-07-31 | 1993-02-12 | Iwasaki Electric Co Ltd | 高圧ナトリウムランプ |
CA2111426A1 (en) * | 1992-12-18 | 1994-06-19 | Alfred E. Feuersanger | Electrodeless lamp bulb |
JPH07272680A (ja) * | 1994-03-31 | 1995-10-20 | Toshiba Lighting & Technol Corp | セラミックス放電灯、放電灯点灯装置および照明器具 |
-
1997
- 1997-01-16 US US08/783,443 patent/US5814944A/en not_active Expired - Fee Related
- 1997-01-22 DE DE69734075T patent/DE69734075T2/de not_active Expired - Fee Related
- 1997-01-22 CN CN97102339A patent/CN1104738C/zh not_active Expired - Fee Related
- 1997-01-22 EP EP97200148A patent/EP0790639B1/en not_active Expired - Lifetime
-
1998
- 1998-02-11 HK HK98101044A patent/HK1001986A1/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE69734075D1 (de) | 2005-10-06 |
CN1104738C (zh) | 2003-04-02 |
US5814944A (en) | 1998-09-29 |
CN1164123A (zh) | 1997-11-05 |
EP0790639B1 (en) | 2005-08-31 |
DE69734075T2 (de) | 2006-06-14 |
EP0790639A1 (en) | 1997-08-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PC | Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee) |
Effective date: 20100122 |