Color-Mixing Convergent Optical System
Patent No. EP2643717 (titled "Color-Mixing Convergent Optical System") was filed by Swarco Futurit Verkehrssignalsysteme Gesmbh on Nov 17, 2011. The application was issued on Jan 26, 2022.
Patent Summary
A color mixing optical system for outdoor traffic displays using RGB LEDs that provides uniform color and brightness without color artifacts when viewed from angles. The system involves a light guide rod with a specialized cross section and indentations that mixes the separate RGB LED light rays inside the rod. This prevents color shifting or spots when viewed from the side. The LED crystals are arranged in the source to capture and feed into the rod. A converging lens focuses the mixed light. The rod's gradual increase in cross section and center entry/exit helps mixing. The system avoids complex, costly, and bulky light guides like fiber bundles.
UPC Cases New
Latest UPC cases involving this patent.
Patent Family
Dossier Documents
The dossier documents provide a comprehensive record of the patent's prosecution history - including filings, correspondence, and decisions made by patent offices - and are crucial for understanding the patent's legal journey and any challenges it may have faced during examination.
Date
Description
Get instant alerts for new documents
EP2643717
- Application Number
- EP11810779A
- Filing Date
- Nov 17, 2011
- Status
- No Opposition Filed Within Time Limit
- Dec 2, 2022
- Publication Date
- Jan 26, 2022
- External Links
- Slate, Register , Google Patents