Glassless stereoscopic movie system 1923

This photograph, taken in 1923, shows a glassless stereoscopic movie system designed by Georgian inventor David Kakabadzé (1889-1952). This system allows for the viewing of 3D films without the use of traditional glasses. The design incorporates three separate units: two viewers on either side of a central projection unit, connected by a long metal bar. The viewers are rectangular frames that hold a screen onto which the images are projected. This invention, a significant step in the evolution of 3D cinema, demonstrates Kakabadzé's ingenuity and his contribution to the world of film technology.