That most excellent logo which currently graces my page is shamelessly looted from the now defunct Valdai Optical-Mechanical Factory in Russia.
It along with various others produced many of the Zeiss lens clones that now have cult status amongst photographers like me who adapt them to modern mirrorless digital cameras.
If you’re a fan of the constructivist and other graphic art of the former USSR, you might enjoy looking at the range of logos from now mostly defunct optical works in the (now) Russian Federation and various former USSR states. They are beautiful.
http://cameras.alfredklomp.com/logos/
Mikrokosm Fotos 