Lamp having silica protective coating
US5536991A · kind A · utility
8Cited by
5References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 13, 1994 |
| Grant date | Jul 16, 1996 |
| Priority date | — |
| Expiry date | Sep 13, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01K1/325
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric lamp, such as an incandescent linear quartz heat lamp, is provided having a vitreous light transmissive envelope having an exterior surface and a light source capable of generating light within said envelope. Disposed on a portion of the exterior surface of the envelope is a diffuse reflective coating, such as a boron nitride coating, for reflecting at least a portion of the light emitted by the source. A protective silica coating encapsulates the reflective coating to protect the reflective coating from things such as abrasion, moisture, and cleaning solvents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.