Raoul Grimoin-Sanson (1860–1941) was an inventor in the field of early cinema.
He was born in Elbeuf, as Raoul Grimoin; he added the surname Sanson later.
He had an early interest in stage magic as well as photography.
In the 1890s, Grimoin-Sanson began experiments in moving pictures, and desired to project films, like those from Thomas Edison's kinetoscope, on screen.
In 1896, he invented a crude camera/projector combination called the Phototachygraphe.