Question: What Japanese brand-name lens was used between 1940 and 1980 by the German camera company founded by Ernst Leitz?
Sentence (from "Rokkor"): Rokkor was a brand name used for all Chiyoda Kōgaku Seikō and later Minolta lenses between 1940 and 1980, including a few, which were marketed and sold by other companies like Leica.
Relevant evidence: Yes