Abstract
Integral imaging has the problem of the limitation of viewing angle. This paper describes a wide-viewing-angle 3D display system using holographic optical element (HOE) lens array. This display system consists of a flat HOE lens array and a projector. However, the axis of each elemental HOE lens is eccentric. Since every axis of the elemental HOE lens is convergent, the flat HOE lens array works as a virtual curved lens array. Thus, this display system has a wide viewing angle. On the other hand, generally, in a integral imaging system each elemental lens has its corresponding area on the display panel. To prevent the image flipping, the elemental image that exceeds the corresponding area is discarded. Therefore, the number of the elemental images is limited and the viewing angle is limited. In the proposed system, since the HOE lens array is flat and the light rays from the projector are parallel, the elemental image does not exceed the corresponding area and the flipped images are not observed. Also, the configuration of this display system is simple. The principle of the proposed system is explained and the experimental result is presented.
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