Geometry enhanced optical output for RF excited fluorescent lights
US5220236A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 1, 1991 |
| Grant date | Jun 15, 1993 |
| Priority date | — |
| Expiry date | Feb 1, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J65/046
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A fluorescent lighting structure having an inner glass envelope and an outer glass envelope surrounding the inner glass envelope, an ionizable gas contained within the volume between the inner and outer glass envelopes, an electrode structure disposed on the inside surface of the inner glass envelope, a phosphor coating disposed on the outside surface of the inner glass envelope, and an ultraviolet reflective coating on the inside surface of the outer glass envelope. Excitation of the electrode structure causes discharge of the ionizable gas that produces ultraviolet radiation, which in turn excites the phosphor coating to emit visible light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.