Method for producing a headlamp lens for a motor-vehicle headlamp
US8556482B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 16, 2008 |
| Grant date | Oct 15, 2013 |
| Priority date | — |
| Expiry date | Aug 2, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21W2102/18
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a method for producing a headlamp lens (2) for a vehicle headlamp, in particular for a motor-vehicle headlamp (1), wherein the headlamp lens (2) comprises a transparent body (3) with an optically effective surface (5), which is in particular substantially planar and can be turned towards a light source (10), and an optically effective surface (4), which is in particular convex and can be turned away from the light source (10), wherein the gradient of a light-dark boundary (25) projected by the headlamp lens (2) or a further headlamp lens is measured, and wherein a light diffusing structure (35) is produced in the transparent body (3) in accordance with the measured gradient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.