Patent ID: 9507093
Filing Date: 2016-11-29
CPC Classification: G02B

Claim Text:
1. A polarization-maintaining optical rotary data transmission device configured to transmit linearly polarized light between first and second rotatably interconnected waveguides, having two collimator assemblies that are optically directed to each other and aligned along a rotational axis, and defining an optical path between said collimator assemblies, each collimator assembly including: a plate to which a corresponding waveguide is affixed; a polarization converter located at a first side of the plate opposing said corresponding waveguide such as to be separated from said corresponding waveguide by the plate and in optical communication with said corresponding waveguide through the plate; a micro-optic collimator located at a side of the polarization converter opposing the plate such as to be separated from the plate by said polarization converter, said micro-optic collimator including a plurality of lenses monolithically attached to one another to form a lens unit, said lens unit adapted to couple light between the corresponding waveguide and free space while transmitting circularly polarized light, said lens unit having a surface at which said micro-optic collimator is affixed to the polarization converter; wherein the polarization converter is mounted between the collimator and the plate by a means including one of glue, bond, and weld.