Two-headlamp main beam units for motor vehicles
US4654759A · kind A · utility
1Cited by
8References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 21, 1986 |
| Grant date | Mar 31, 1987 |
| Priority date | — |
| Expiry date | Mar 21, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21S41/162
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a main beam unit for a motor vehicle, said unit comprising first and second juxtaposed parabolic main beam headlamps (10, 20). In accordance with the invention, these headlamps are of different aperture diameters and of different focal lengths, with the aperture diameter d.sub.1 of the first headlamp being greater than the aperture diameter d.sub.2 of the second headlamp, and with the focal length f.sub.1 of the first headlamp being greater than the focal length f.sub.2 of the second headlamp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.