Optical rotating data transmission device of short overall length

US7876985B2 · kind B2 · utility

Assignee

• SCHLEIFRING UND APPARATEBAU GMBH · DE

Inventors

• Gregor Popp · Munich, DE
• Max Winkler · St Marys, AU

Key dates

• Filing date: Jun 23, 2008
• Grant date: Jan 25, 2011
• Expiry date: Jun 23, 2028

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B3/0087
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An optical rotating data transmission device comprises a first collimator arrangement for coupling-on first optical waveguides, a second collimator arrangement for coupling-on second optical waveguides, which is supported to be rotatable relative to the first collimator arrangement about a rotation axis, and a derotating element such as a Dove prism in a light path between the collimator arrangements. At least one collimator arrangement comprises a deflecting element which deflects light entering the device from optical waveguides positioned at an angle to the direction of the rotation axis to travel along the direction of the rotation axis, or deflects light traveling along the direction of the rotation axis to exit the device at an angle to the rotation axis towards optical waveguides.