I was thinking the same thing. I don't believe there is any connection with the current Voigtlander company in Germany and Cosina. Does Cosina own the Voigtlander name, or do they just license it?
In any case, I don't think there is any connection with Cosina Voigtlander and the Voigtlander of yesteryear that produced the Bessa, Vito, Prominent, Bessamatic and other cameras other than the use of the names.
Very nice lenses, however.