Metal vapor discharge lamp, floodlight projector and metal vapor discharge lamp lighting device
US7388332B2 · kind B2 · utility
0Cited by
5References
17Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Oct 8, 2003 |
| Grant date | Jun 17, 2008 |
| Priority date | — |
| Expiry date | Jul 11, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21S41/683
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A metal vapor discharge lamp whose near-infrared radiation is stronger than a conventional high-pressure discharge lamp, a projector utilizing this discharge lamp, and a metal vapor discharge lamp lighting device are disclosed. The metal vapor discharge lamp comprises a refractory light-transmitting hermetic vessel, a pair of electrode fixed to the hermetic vessel, and a discharge medium sealed in the hermetic vessel and containing a halide and a rare gas. Most of the light irradiated when the discharge lamp is in the ON state has near-infrared wavelengths (750–1100 nm).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.