Abstract

The transmittance modified by the correlogram can be that of intensity, amplitude, phase, color, and/or polarization. We discuss two realizations in this paper: polarization and intensity transmittance. We limit ourselves to two transmission layers, each of which carries a picture. The pictures seen on each of these two layers are combined by multiplicative superimposition (i.e., by viewing one through the other). The result is a third picture. The relationships among these three pictures can vary, although the basic principle remains the use of the simple fact that transmittances multiply for overlapping areas and add for neighboring areas. In the first example, using polarization transmittance, the layer pictures encode two perspective views which are presented separately to the eyes. This realization is suited to stereoscopic display without the necessity of special viewing spectacles. In the second example presented, using intensity transmittance, the resultant third picture is independent of the component layer pictures.

© 1985 Optical Society of America