Ortofon was founded in 1918 by two Danish engineers, Axel Petersen and Arnold Poulsen. These two pioneers had one very clear objective
in mind - to put sound onto film, and with this, they established the Electrical Fonofilms Com-
pany A/S, which later on was renamed Ortofon A/S. A few years later, in the Palace Theatre, Copenhagen, they were able to present the first fully-synchronized sound films and in so doing, created a world sensation.
Ortofon was also the first company to produce
an outdoor sound film recording. The founders
took out several patents and issued licences to film companies the world over for their "System Petersen og Poulsen", which is even to this day the basis for film with optical sound.
Link > http://www.ortofon.com