Low T1I/low InI-based dose for dimming with minimal color shift and high performance
US8552646B2 · kind B2 · utility
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12References
20Claims
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Key dates
| Filing date | May 5, 2011 |
| Grant date | Oct 8, 2013 |
| Priority date | — |
| Expiry date | Aug 18, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/827
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present disclosure relates to a discharge lamp able to be operated at less than full rated power without suffering undesirable color shift, loss of lumen maintenance or loss of lamp efficacy. It finds particular application in connection with ceramic metal halide lamps having a low dose level of thallium iodide and optionally indium iodide, e.g. less than 1 mol %, in the dose thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.