Lamps having multiple and aimed parabolic sections for increased useful light output
US4494176A · kind A · utility
33Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 14, 1984 |
| Grant date | Jan 15, 1985 |
| Priority date | — |
| Expiry date | Mar 14, 2004 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21V29/15
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A reflector lamp having multiple and aimed parabolic reflective sections so as to improve the desired beam pattern is disclosed. The reflector lamp may be of the parabolic aluminized reflector (PAR) or the reflector (R) type lamps having primary, multiple intermediate and rear sections of a parabolic contour which improves the internal light reflective and absorption characteristics of the reflector lamp. The overall effect is to improve the optical efficacy of the reflector lamp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.