Patent ID: 7010191
Filing Date: 2006-03-07
Classification: G02B

Abstract:
1. Device for transmitting modulated optical signals between a first unit and a second unit, the first unit being supported for rotary movement relative to the second unit, comprising: a light guide along a circular track on the first unit; at least one first light coupler connected to the light guide for coupling light into or out of the light guide; at least one second light coupler disposed on the second unit and movable relative to the light guide, for coupling light into or out of the light guide; and wherein hydrostatic or hydrodynamic bearing means are provided to maintain at least one second light coupler in a defined position relative to the light guide along at least one axis, preferably along two axes perpendicular to a tangent of a rotary movement of the two units by means of a liquid or gaseous medium, or a bearing means based on a liquid or gaseous medium, preferably air.