Eidoloscope

The Eidoloscope (from ancient Greek. Εἴδωλον eidolon = image, likeness ) was a motion picture projection apparatus for two-inch width (50.8 mm) and film step ¾ inch (19.05 mm). Its peculiarity was that the shutter shaft is translated in a 4:1 ratio to the pin shaft, thereby making the movie with 12 frames per second can be presented to flicker. The film drive is a sprocket wheel in connection with a Geneva movement.

A recording apparatus for wide film and widescreen ( 3:7 ) has been patented on March 1, 1898 Woodville Latham. The design of the camera gave William Kennedy Laurie Dickson. It works on the principle of the club and can serve as Réversible also copying and projection. It has two individually removable drum closures and as a special control means consisting of smooth rubber wheels and adjustable pressure.

History

Woodville Latham's sons Otway and Gray was offered in 1894, the desire in the operation of a Kinetoscope Parlors, to present films in projection. Dickson took part in secret at Latham project until the beginning of April 1895 ended his employment with Edison. He put the Latham his former subordinates in Edison, Eugène Augustin Lauste before. The dividing line between Dickson and Laustes post is just hard to find today. Probably Dickson laid down the film format and the Broad camera Lauste the structure of the projector, which was initially called the Panopticon. The technician had to prevail against the idea of continuously running film, which had occupied Dickson and Latham.

Camera and projector together is the first use of wound rolls. Loose loops can be put into the film between these and the image window, leaving only a relatively short portion is moved discontinued. The data on the author of this arrangement are contradictory. Most likely Lauste had the idea.

Thanks to the loops could be handled basically unlimited long movies. The Company used the lambda with actual images, for example, a boxing match ' on 4 May 1895.

1897, the disadvantages of the Eidoloscopes were serious. The frame rate was too low. After two changes, film and aperture on, sold the leaders of Eidoloscope Company, successor to the lambda Co., the system at Edison, where Thomas and Charles Francis Jenkins Armat " Edison Scope Vita " developed it.