UV Radiation-absorbing coatings and their use in lamps
US5552671A · kind A · utility
20Cited by
5References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 14, 1995 |
| Grant date | Sep 3, 1996 |
| Priority date | — |
| Expiry date | Feb 14, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The subject invention, therefore, relates to a multi-layer coating for use on a thick-walled metal halide lamp which emits visible light radiation and absorbs and reflects UV radiation, and which further manages the thermal non-uniformity problems across the thickness of the arc tube to substantially eliminate devitrification problems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.