Carl Zeiss Jena

Carl Zeiss Jena refers to the original Zeiss optical works founded by Carl Zeiss in Jena in 1846. After WWII the Jena plant became the East German operation (VEB Carl Zeiss Jena), producing lenses such as the Tessar, Biotar and Flektogon, and was reunified into the Carl Zeiss group in 1991.