Patent · US Active

Optical rotary joint

US7433556B1 · kind B1 · utility

9Cited by

6References

9Claims

0Family size

Assignee

SCHLEIFRING UND APPARATEBAU GMBH · DE

Inventor

Gregor Popp · Munich, DE

Key dates

Filing date	Jun 21, 2007
Grant date	Oct 7, 2008
Priority date	—
Expiry date	Jun 21, 2027

Classification

Technology area (CPC G)Physics
CPC primaryG02B6/28
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A device for transmitting optical signals comprises two collimator units, supported to be rotatable relative to each other about a rotation axis and one derotating optical element. A first beam splitter receives input signals and splits them into at least two signals, so that they are transferred by at least two optical channels over the collimator units and the derotating optical element. After passing the second collimator unit, the signals are combined by a second beam splitter to a single signal, resulting in largely reduced variations of attenuation during rotation.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.