Lens arrangement for optical rotary joints

US8355609B2 · kind B2 · utility

Assignee

• Shlelfring und Apparatebau GmbH · DE

Inventors

• Gregor Popp · Munich, DE
• Nils Krumme · Feldafing, DE

Key dates

• Filing date: May 7, 2009
• Grant date: Jan 15, 2013
• Expiry date: Jul 1, 2030

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B6/3604
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

According to one embodiment, an optical rotary joint comprises a first collimator arrangement for coupling-on first light-waveguides, and a second collimator arrangement for coupling-on second light-waveguides, with the latter being rotatably supported relative to the first collimator arrangement about a rotation axis. A Dove prism is provided between the first and second collimator arrangements as a derotating element. The first and second collimator arrangements have at least one micro-lens array on which light-waveguides with associated ferrules are disposed. In order to avoid tensile forces from arising in the arrangement, or as a result of individual ferrules becoming interconnected by an applied adhesive, trenches, barriers, or also coatings are provided between the individual ferrules.