Headlamp for vehicle
US6882110B2 · kind B2 · utility
23Cited by
8References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 2, 2003 |
| Grant date | Apr 19, 2005 |
| Priority date | — |
| Expiry date | Sep 2, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S362/80
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A headlamp having a plurality of lighting units using light emitting diodes as light sources. A cutoff line forming unit, hot zone forming units, and a diffusion region forming unit are used as these lighting units. Consequently, a light distribution pattern for a low beam having a desirable pattern shape and light intensity distribution can be obtained as the synthetic light distribution pattern of light distribution patterns formed by the irradiation of a light from these three kinds of lighting units.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.