UN APARATO OPTICO DE FUNCIONES MULTIPLES Y UNA DISPOSICION DE HOJA CONDUCTORA DE LA LUZ.

摘要

A plural function optical apparatus defined by first and second parallel lensfiche elements positioned with their emulsion sides facing each other and first and second parallel optical screens each spaced from and parallel to a respective face of the lensfiche. Two lighting sheet elements may be added to increase the number of functions (projection, recording).