Optical beam switching device for e.g. optical beam routing device, has position correction device conserving parallelism of deflected optical beams and rendering beams to be coplanar in plane secant with optical axis

摘要

#CMT# #/CMT# The device has an angle-position transformation device assuring an angle-position transformation between a potential angular direction and a potential position in a plane normal to an optical axis. The transformation device renders deflected optical beams (4a-4c) to be parallel but non-coplanar in a plane containing the axis and a rotation axis. A position correction device in downstream of the transformation device conserves the parallelism of the beams and renders the beams to be coplanar in a plane secant with the optical axis. #CMT# : #/CMT# An independent claim is also included for an optical beams routing device comprising a series of switching device. #CMT#USE : #/CMT# Used in an optical beam routing device (claimed), and in a node of an optical telecommunication network for switching an optical beam carried by an optical fiber towards another optical fiber. #CMT#ADVANTAGE : #/CMT# The switching device forms a compact assembly together with other switching device and provides optical beam with linear distribution in order to be utilized by standard devices. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a cross sectional view of a position correction device of a switching device. 4a-4c : Deflected optical beams 7a-7c : Reflecting zones.