Lamp with ceramic light shield
US6705748B2 · kind B2 · utility
4Cited by
2References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 11, 2002 |
| Grant date | Mar 16, 2004 |
| Priority date | — |
| Expiry date | Apr 27, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21V7/28
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A ceramic cup may be fitted in the neck of a reflector region to provide good reflection or blockage of the light incident on the reflector neck. Light is then prevented light from incorrectly exiting through the lamp neck or from heating the neck region. The ceramic cup can be cheaper than coatings or other shields. The ceramic cup shield can be more durable and electrically more compatible with the lead structure extending through the neck region. The cup shield can also help align and properly position the light source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.