High pressure mercury vapor discharge lamp containing bismuth iodide
US3989972A · kind A · utility
3Cited by
6References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 27, 1967 |
| Grant date | Nov 2, 1976 |
| Priority date | — |
| Expiry date | Oct 27, 1987 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/18
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A high pressure, mercury-vapor (HPMV) discharge lamp of the additive type having a discharge sustaining filling which includes between 0.5 and 2.5 mg. of bismuth iodide (BiI.sub.3) per cubic centimeter of arc tube volume, a mercury charge of about 3.0 mg. per cubic centimeter of arc tube volume and a small quantity of inert ionizable starting gas whereby a substantially continuous radiation spectrum is achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.