A vectograph is a type of stereoscopic print or transparency viewed by using the polarized 3D glasses most commonly associated with projected 3D motion pictures.
He immigrated to the US from Czechoslovakia in 1938 and was hired by the Polaroid Corporation, where he worked with its founder Edwin Land, to develop his idea into a practical process.
Vectographic prints and transparencies can serve many of the same purposes as their anaglyph equivalents, but with the visual advantage that they do not require the use of viewing filters which are of disturbingly different colors for each eye.
During the 3D fad of 1953, vectographic 3D color motion picture prints that could be shown with ordinary unmodified projectors were expected to be a commercial reality, but the rapid waning of public enthusiasm for 3D discouraged those efforts.
Currently available vectographic vision training aids, marketed under the registered trademark name "Vectogram", include a variety with the left-eye and right-eye images overlaid on separate transparent plastic sheets so as to be adjustable.