Experiencias de cine en relieve (años 30)

In the early 1930s, Teófilo Mingueza carried out experiences of cinema in relief. To do this, he set up a 35mm camera, filming in a single frame, vertically, the vision of both eyes, which, using glasses with mirrors and prisms, achieved the desired sensation. In 1935 he patented this system.(Filmoteca vasca).