Par spot lamp
US4473872A · kind A · utility
8Cited by
2References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 21, 1982 |
| Grant date | Sep 25, 1984 |
| Priority date | — |
| Expiry date | May 21, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01K1/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A spot 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 having a stippled surface. The spot 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.