Head lamps unit with multiple passing beam filaments providing improved passing beam
US5089942A · kind A · utility
5Cited by
2References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 11, 1991 |
| Grant date | Feb 18, 1992 |
| Priority date | — |
| Expiry date | Apr 11, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21S41/321
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A head lamp unit includes two lighting fixtures, each of which includes a running beam filament and a passing beam filament, for selectively producing a running light beam and a passing light beam. The light distribution characteristic of the passing light beam of one of the lighting fixtures is arranged to be symmetrical to the left and right, whereas the light distribution characteristic of the passing light beam of the other lighting fixture is arranged to be asymmetrical to the left and right, to thereby provide an improved passing light beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.