Illumination system for imaging illumination with a high level of homogeneity

US7695164B2 · kind B2 · utility

Assignee

• OSRAM Gesellschaft mit beschraenkter Haftung · DE

Inventors

• Dirk Berben · Herdecke, DE
• Frank Jermann · Königsbrunn, DE

Key dates

• Filing date: May 22, 2007
• Grant date: Apr 13, 2010
• Expiry date: Nov 17, 2027

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B19/008
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An illumination system for imaging illumination having at least one compact light source. The illumination system comprises a reflector having a reflector contour, the light source being accommodated in the vicinity of the reflector contour. A compact diffusing medium is accommodated at the focal point of the reflector, the light from the light sources being directed substantially onto the diffusing medium and, from there, being diffused onto the reflector contour, with the result that the light leaving the reflector is emitted homogeneously.