Optical device comprising a structure for avoiding reflections

US7760414B2 · kind B2 · utility

Assignee

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Harald Schenk · Dresden, DE
• Thilo Sandner · Dresden, DE

Key dates

• Filing date: Mar 31, 2008
• Grant date: Jul 20, 2010
• Expiry date: Mar 31, 2028

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B27/0018
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An optical device includes a deflectable optical functional structure for interacting with electromagnetic radiation incident thereon, and a protective structure which is associated to the optical functional structure and at least partly transparent for the electromagnetic radiation. The optical functional structure is arranged in a manner tilted relative to the protective structure so that, in a non-deflected position of the optical functional structure, a main beam path of the electromagnetic radiation which interacts with the optical functional structure through the protective structure has an angle relative to a sub-beam path of the electromagnetic radiation reflected at the protective structure.