Lighting device for illuminating or backlighting a light signature and lighting unit with an illuminatable or backlightable light signature and such a lighting device
US12416390B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2024 |
| Grant date | Sep 16, 2025 |
| Priority date | — |
| Expiry date | Mar 22, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/009
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lighting device for illuminating or backlighting a light signature, comprising: at least one semiconductor light source for emitting light in a main radiation direction corresponding to an optical axis of the semiconductor light source, at least one partially transparent reflective layer arranged in front of and at a distance from at least one associated semiconductor light source in the main emission direction, and a translucent volume scattering material which is arranged at the distance between the at least one semiconductor light source and the at least one associated partially transparent reflective layer, or which is arranged in front of the partially transparent reflective layer in the main radiation direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.