Reflector-type lamp having reduced focus loss
US4686412A · kind A · utility
16Cited by
9References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 14, 1986 |
| Grant date | Aug 11, 1987 |
| Priority date | — |
| Expiry date | Apr 14, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01K1/14
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This invention provides for an improved reflector-type lamp having reduced focus loss and exhibiting an increase in reflector collection efficiency. Stray light from the lamp's light source is reduced and channeled into the central angular region of the reflector where it can be more easily controlled and increase the in candle power of the lamp. A shorter, more compact filament design, wound with larger mandrel ratios, is positioned within the reflector to evenly disperse the light energy throughout the central angular region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.