Automotive headlamp reflector and method for its design
US6007224A · kind A · utility
4Cited by
8References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 11, 1997 |
| Grant date | Dec 28, 1999 |
| Priority date | — |
| Expiry date | Jul 11, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21S41/335
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A reflector for a headlamp is divided into zones depending on the sizes of the light source images produced by the various parts of the reflector. Those parts of the reflector that provide smaller image sizes are used to supply light to the higher intensity parts of the road pattern. This allows greater control over glare and is particularly useful for headlamps having high intensity discharge as a light source. In one embodiment, a larger reflector is trimmed to be smaller and yet to retain portions that provide the small light source images.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.