CPC Subgroup
G02B 6/421 Full Title
Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings > Coupling light guides > Coupling light guides with opto-electronic elements
G02B 6/421 Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings > Coupling light guides > Coupling light guides with opto-electronic elements