Patent · US Expired

Projection headlight for motor vehicles

US4670818A · kind A · utility

6Cited by
2References
12Claims
0Family size

Assignee

Inventor

Key dates

Filing dateSep 17, 1985
Grant dateJun 2, 1987
Priority date
Expiry dateSep 17, 2005

Classification

  • Technology area (CPC F)Mechanical Engineering; Lighting; Heating
  • CPC primaryF21V3/04
  • WIPO fieldTransport
  • WIPO sectorMechanical engineering

Abstract

A projection headlight is provided for a motor vehicle wherein a projection lens is encased by a disk-shaped covering having a size larger than the surface area of the lens. A light passage area is provided in the covering and portion of the covering outside the light passage area is provided with a colored coating. The colored coating exhibits variations in light transmitting properties across the surface of the coated portion of the covering. The resulting headlight has a conventional size and the function of the lens is unimpaired.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.