Projector for three dimensional cinema, comprises two maltese cross boxes and toothed drums which drive film in steps and rotating mirror which projects first the left and then the right hand images

摘要

A single film passes through two channels (8,9) and is controlled by two maltese crosses and toothed drums (10,11) such that it advances in steps. At each step light is first reflected by a half disk mirror (12) and a fixed mirror (14) through a left hand film image and objective (6) and then directly through fixed mirrors (16,17), the right hand film image and objective (7)