<title>Projection-Type Holographic Displays</title>

Abstract

Projection-type holography is an interesting three-dimensional imaging technique because in this method an autostereoscopic, wide-visual-field/wide-viewing-zone 3-D spatial image can be reconstructed from a tiny piece of hologram. In the former half of this review paper, various versions of the projection-type holography are described in chronological order. In the latter half, synthesis of an intermediate-viewing-angle image from binocular ones is discussed; such a technique is necessary for producing a satisfactory auto-stereoscopic projection-type image form a few element pictures of the object taken from different viewing directions.