A method of output coupling light from a waveguide, a waveguide,

摘要

The present invention relates to a waveguide comprising a substrate 1 on which a layer stack 2 of at least two layer forming portions 3a and 3b is arranged and in which respective layer forming portions 3a and 3b are arranged in particular At least one transparent dielectric layer 3a1 and 3b2 having a refractive index higher than that of the substrate 1 and between the two adjacent layer forming portions 3a and 3b is provided a structure portion which influences light propagation, A structure 4 extending in the form of a layer is arranged and the position of the structure 4 in the layer stack is arranged in a waveguide mode which can be guided in the waveguide, including at least one, preferably exactly one node 5a And the waveguide comprises at least one means for at least temporarily changing the relative position between the structure 5 and the node 5a in guided waveguide mode. The present invention also relates to a display comprising at least one waveguide and to a method for output coupling light from a waveguide, wherein the light propagates as a waveguide mode comprising at least one node, The relative position between the node and the structural part of the waveguide mode is at least temporarily displaced, in particular through the displacement of the node relative to the structural part, or through the displacement of the structural part relative to the node, do.