Mystery lens

An old Swedish movie features a photographer, Harry Friberg, using a Hasselblad camera. In a close-up I can see that the lens is marked Linhof. I am a bit surprised by this, I thought Linhof made large studio cameras, not lenses. I have searched the web for an explanation, and asked a Hasselblad owner, but to no avail. I can post a still from the movie, showing the lens if required.