Projection headlamp for vehicles
US5379196A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 3, 1993 |
| Grant date | Jan 3, 1995 |
| Priority date | — |
| Expiry date | Jun 3, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60Q2300/42
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A projection headlamp for vehicles has a substantially elliptical reflector 14, a light source (bulb) located at the first focal point F1 of the reflector 14, a projection lens 16 disposed in front of the reflector 14, and a shade 20 located at a position near to the second focal point F2 and the focal point of the projection lens 16. The shade 20 partially intercepts light beams going from the reflector 14 toward the projection lens 16. The shade 20 is allowed to turn about the horizontal shaft 23 of the reflector 14 to adjust the beam distribution pattern. The shade 14 includes right and left shades 21 and 22, which are separated and horizontally extended when seen from the point substantially right under the optical axis L, and are allowed to independently turn about the horizontal shaft 23.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.