Optical arrangement for forming Stereoscopic pictures - uses four parallel mirrors and filters to superimpose displaced left and right images on film

摘要

The arrangement can be used on any type of camera and comprises four parallel mirrors placed in pairs, these providing superimposed left and right images. Optical separation of each of these images is obtained by colour filters. The unit has a vertical plate (1) provided with two rectangular openings (3,4) one left and one right. The two pairs of mirrors (M1, M2, m1, m2) are arranged in front of these and the filters (F1, F2) behind. The mirrors can be angularly displaced relative to their initial parallelism in order to coincide the principal planes, no spectacles being necessary.