Two-Channel Multimode Rotary Joint
AssigneeSchleifring und Apparatebau GmbH
InventorNils Krumme
Life of this patent
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Abstract
An optical two-channel rotary joint that is also suitable for coupling of single-mode fibers comprises two housing parts that are rotatable relative to each other. Each of these housing parts accommodates a light-waveguide for supplying light and a light-waveguide for withdrawing light. The arrangement has two optical paths adapted to operate in opposite directions, with each light-waveguide for supplying light being coupled with a light-waveguide for withdrawing light via an added biconvex lens. Furthermore, one focuser is disposed on each of the light-waveguides for supplying light, which focuses the light of the light-waveguide onto the corresponding light-waveguide for withdrawing light.
Claims10
Optical rotary joint, comprising:
- a first housing part and a second housing part connected to each other by means of a bearing unit to be rotatable about the rotation axis;
- a first optical path comprising a first light-waveguide on the first housing part for supplying light, and a second light-waveguide on the second housing part for withdrawing light;
- a second optical path extending in an opposite direction and comprising a third light-waveguide on the second housing part for supplying light, and a fourth light-waveguide on the first housing part for withdrawing the light;
- in which the second and fourth light-waveguides are disposed along the rotation axis, and the first and third light-waveguides light are disposed parallel to the rotation axis laterally of the rotation axis;
- wherein a lens is provided in the first optical path and in the second optical path;
- wherein a first focuser is provided at the end face of the first light-waveguide for focusing a light beam emitted from an end face of the first light-waveguide with the aid of the lens onto an end face of the second light-waveguide;
- and
- wherein a second focuser is provided at the end face of the third light-waveguide for focusing a light beam emitted from an end face of the third light-waveguide with the aid off the lens onto an end face of the fourth light-waveguide.
Dependencies are inferred from the claim text.