Light device, especially a signal lamp, for motor vehicles
US10156337B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 22, 2017 |
| Grant date | Dec 18, 2018 |
| Priority date | — |
| Expiry date | Nov 22, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21S43/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The light device, especially a signal lamp, for motor vehicles comprises a carrier housing covered by a cover with a front light output surface, a lighting unit positioned within the carrier housing to emit light rays towards the light output surface, and a semi-permeable layer situated between the light output surface and the lighting unit. The device further comprises a partly transparent primary planar optical element positioned between the output light surface and the lighting unit, and a secondary planar optical element positioned between the primary planar optical element and the lighting unit. Generally, the secondary planar optical element comprises at least one non-transparent planar part and one or more partly transparent planar parts, which are arranged in such a way to create one or more areas on the surface of the secondary planar optical element that are at least partly permeable for light rays emitted by the lighting unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.