Cathodoluminescent phosphor lamp having extraction and diffusing grids and base for attachment to standard lighting fixtures
US8308520B2 · kind B2 · utility
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2References
2Claims
0Family size
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Key dates
| Filing date | Nov 14, 2011 |
| Grant date | Nov 13, 2012 |
| Priority date | — |
| Expiry date | Nov 14, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J63/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light emitting device has a cathode-ray tube and power supply. The cathode-ray tube in an embodiment is optimized for emitting a broad electron beam, in one variation a dome-shaped diffusing grid is used to spread the beam. In another embodiment, the device has a base adapted for attachment to a standard lighting fixture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.