Lamp method and apparatus using multiple reflections
US5903091A · kind A · utility
38Cited by
29References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 29, 1997 |
| Grant date | May 11, 1999 |
| Priority date | — |
| Expiry date | May 29, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J65/044
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method wherein the light in a sulfur or selenium lamp is reflected through the fill a multiplicity of times to convert ultraviolet radiation to visible. A light emitting device comprised of an electrodeless envelope which bears a light reflecting covering around a first portion which does not crack due to differential thermal expansion and which has a second portion which comprises a light transmissive aperture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.