PAR Flood lamp
US4484254A · kind A · utility
20Cited by
2References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 21, 1982 |
| Grant date | Nov 20, 1984 |
| Priority date | — |
| Expiry date | May 21, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21V7/09
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A flood lamp having a lens with a series of concentrically disposed fluted rings on the internal lens surface in combination with an outer concentric ring adjacent to and wider than any one of the fluted rings and containing a plurality of semi-spherical protrusions disposed in an established pattern (e.g., circular or hexagonal). The flood lamp reflector has multiple reflective surfaces including a front section that is parabolic shape having a principle focal point, a spherical section having its center of radius coincident with the principle focal point of the parabolic front section, and a spherical rear section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.