Optical rotary transmitter

An optical rotary transmitter for transmitting optical signals, comprising

• a first light coupler (1) having one or a plurality of first light guides (11) the end faces of which are designed to transmit optical signals and are arranged in a first ring about a central rotational axis (Z);
• a second light coupler (3) having one or a plurality of second light guides (31) the end faces of which are designed to transmit optical signals and are arranged in a first ring about a central rotational axis (Z);
• a fiber mirror (5) comprising a plurality of third light guides that are arranged between the two light couplers (1, 3) and are designed to compensate for the effect of a relative rotation between the two light couplers (1, 3) on the transmission of the optical signals, the end faces of the third light guides being designed to transmit optical signals and being arranged in a third and a fourth ring about the central rotational axis (Z);
• characterized in that
• light inlet/outlet surfaces formed by the third and fourth rings are substantially gap-free, such that the optical signals can be continuously transmitted without interruption;
• further characterized in that
• the end portions of the third light guides (51) are designed so that their end faces form a substantially gap-free surfaces in the third and fourth rings;
• wherein
• the end portions of the third light guides fill the areas of the third end fourth rings in two staggered rows, the cross section of the third light guides being half the cross section of the first and/or second light guides;
• and
• further wherein
• the number of light guides of the fiber mirror is divisible without remainder by two, preferably by four.