Device for reducing color fringing

US10619815B2 · kind B2 · utility

Assignees

• Covestro Deutschland AG · DE
• Technische Hochschule Nürnberg Georg Simon Ohm · DE

Inventors

• Wilfried Haese · Odenthal, DE
• Rafael Oser · Krefeld, DE
• Michael Roppel · Burscheid, DE
• Alexander Von Hoffmann · Altdorf, DE
• Martin Gebhard · Feucht, DE
• Bernhard Heck · Bernburg, DE
• Alena Taranka · Bernburg, DE

Key dates

• Filing date: Oct 9, 2017
• Grant date: Apr 14, 2020
• Expiry date: Oct 9, 2037

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F21Y2115/10
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

The present invention relates to a projection spotlight module comprising a reflector with a first focal point and a second focal point, a light source which is disposed at the first focal point of the reflector or close to the first focal point of the reflector, a lens that has its focal point in common with the second focal point of the reflector, and a stop system with color filters for reducing color fringing.Projection spotlight modules according to the invention are especially suited for illumination in the automotive sector, of utility vehicles, of rail vehicles, of two-wheeled vehicles, of ships, in particular as headlights, as theater spotlights or as architectural lightings, for instance in the illumination of facades.