IR-coated halogen lamp using reflective end coats
US6967443B2 · kind B2 · utility
4Cited by
16References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2003 |
| Grant date | Nov 22, 2005 |
| Priority date | — |
| Expiry date | Nov 14, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A halogen infrared lamp (100) having an infrared reflective coating (118) along with a totally reflecting coating (120) on ends of an ellipsoidal portion of the envelope. The totally reflecting coating reflects the infrared radiation escaping at acute angles and directs the infrared radiation towards the filament to increase the temperature of the filament and thus increase the efficacy of the lamp. The totally reflecting coating may also extend to portions of tubular members extending from the ellipsoidal portion of the envelope.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.