NL7604723A - High pressure sodium vapour discharge - has filling of sodium and mercury so rated that they evaporate completely in operation - Google Patents
High pressure sodium vapour discharge - has filling of sodium and mercury so rated that they evaporate completely in operationInfo
- Publication number
- NL7604723A NL7604723A NL7604723A NL7604723A NL7604723A NL 7604723 A NL7604723 A NL 7604723A NL 7604723 A NL7604723 A NL 7604723A NL 7604723 A NL7604723 A NL 7604723A NL 7604723 A NL7604723 A NL 7604723A
- Authority
- NL
- Netherlands
- Prior art keywords
- sodium
- mercury
- high pressure
- rated
- filling
- 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
- H01J61/18—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent
- H01J61/22—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent vapour of an alkali metal
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/38—Exhausting, degassing, filling, or cleaning vessels
- H01J9/395—Filling vessels
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
Abstract
The high pressure sodium vapour discharge lamp has a refractory, transparent, tubular discharge tube, filled with sodium, mercury and a discharge starting gas. The sodium quantity is between 0. 007 to 0.054 mg and that of mercury 0.054 to 0.6 mg both per cn.cm of the discharge tube volume. The quantitative rating of sodium and mercury ensures complete vaporisation of both element during operation of the lamp. Preferred quantities are 0.007 to 0.018 mg for Na, and 0.1 to 0.6 for Hg. The end sections of the discharge tube (1) are typically surrounded by heat insulating sleeves (5) of refractory, insulating, sealing material. The latter is surrounded by fastening metal band (6).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7604723A NL166579C (en) | 1976-05-04 | 1976-05-04 | HIGH-PRESSURE DISCHARGE LAMP CONTAINING SODIUM AND MERCURY AND METHOD FOR THE MANUFACTURE THEREOF. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7604723A NL166579C (en) | 1976-05-04 | 1976-05-04 | HIGH-PRESSURE DISCHARGE LAMP CONTAINING SODIUM AND MERCURY AND METHOD FOR THE MANUFACTURE THEREOF. |
Publications (2)
Publication Number | Publication Date |
---|---|
NL7604723A true NL7604723A (en) | 1977-11-08 |
NL166579C NL166579C (en) | 1981-08-17 |
Family
ID=19826122
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL7604723A NL166579C (en) | 1976-05-04 | 1976-05-04 | HIGH-PRESSURE DISCHARGE LAMP CONTAINING SODIUM AND MERCURY AND METHOD FOR THE MANUFACTURE THEREOF. |
Country Status (1)
Country | Link |
---|---|
NL (1) | NL166579C (en) |
-
1976
- 1976-05-04 NL NL7604723A patent/NL166579C/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
NL166579C (en) | 1981-08-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
V4 | Lapsed because of reaching the maximum lifetime of a patent |
Free format text: 960504 |