Variable headlamp system for an automotive vehicle using an electrostatic shutter
US5829870A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 1995 |
| Grant date | Nov 3, 1998 |
| Priority date | — |
| Expiry date | Dec 4, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21S41/645
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A headlamp system for an automotive vehicle is provided having a light source generating light, a reflector, a generally transparent light shield, an electrostatic shutter and a lens. The light shield has a surface and laterally displaced edges. The reflector has a predetermined relationship with the light shield and the light source and directs a portion of light from the light source to the surface of the light shield. The electrostatic shutter means is adjacent the surface of the light shield to selectively blocking a portion of the light from the light source. A lens between the light shield and the image surface directs light passing the light shield.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.