Shallow indicator light for a motor vehicle
US4823246A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 23, 1987 |
| Grant date | Apr 18, 1989 |
| Priority date | — |
| Expiry date | Dec 23, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21S43/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An indicator light for a motor vehicle, the light being of the type comprising a substantially point light source (10) and a flat closure glass (20), situated in front of the source, together with beam-forming means for forming a beam of light rays (x'x) propagating along a given general emission direction of the light, said beam-forming means comprising: a generally flat or concave mirror (30) disposed behind the light source and comprising a set of stepped reflecting zones (32, 32, 33) inclined to reflect light rays from the source towards the glass; and a set of deflector zones (201, 202, 203) which are generally in the form of concentric rings on the glass, each zone being formed by a set of narrow prisms all having the same profile within each zone, said profile being designed as a function of the average direction respectively of direct rays and of reflected rays received by said zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.