In 1928, Lieuwe Van Albada invented a viewfinder that occupies the same physical space. It consists of a variation of the refractive reverse-Galilean design but focuses a frame line using a superimposed reflective design similar to that of a mirror telescope.

When did the viewfinder come out?

The first eye-level SLR viewfinder was patented in Hungary on August 23, 1943 by Jenő Dulovits, who then designed the first 35 mm camera with one, the Duflex, which used a system of mirrors to provide a laterally correct, upright image in the eye-level viewfinder.

Who invented viewfinder?

Charles Harrison View-master (model G) 1962. A mass consumer device marketed as a toy, the original View-Master came with thin cardboard disks, or reels, containing stereoscopic pairs of small Kodachrome photographs that when viewed through the apparatus created the illusion of three-dimensional scenes.