Vehicle headlamp
US6891333B2 · kind B2 · utility
23Cited by
9References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 2, 2003 |
| Grant date | May 10, 2005 |
| Priority date | — |
| Expiry date | Sep 2, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A vehicle headlamp is constituted to have a plurality of lamp units having light-emitting diodes as light sources. At that time, three types of lamp units of different radiation modes; that is, a projector-type lamp unit, direct-projection-type lamp units, and a reflection-type lamp unit, are used as the plurality of lamp units. As a result, a low-beam light distribution pattern obtained as a merged light distribution pattern formed from the light rays output from these three types of lamp units can be readily formed in a desired pattern geometry and a desired distribution of luminous intensity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.