| 摘要 |
A decoder screen (80) is intended for use in an imaging system in which the screen is disposed between a viewer and a composite image containing alternate portions of two images which together form a stereoscopic pair. The decoder screen (80) includes a surface on which is printed a pattern of alternating clear and opaque areas, for example, parallel stripes or a chequerboard pattern, and a plurality of lenticular elements (82). The lenticular elements may be semicircular lenses or elongate prisms. In either case, the lenticular elements are so shaped that the apparent pattern of clear and opaque areas perceived by one of the viewer's eyes is the inverse of the apparent pattern perceived by the viewer's other eye when looking at the decoder screen and a composite image positioned immediately behind it. Thus, each of the viewer's eyes perceives parts of only one of the two images forming the stereoscopic pair, resulting in an overall 3-D effect. |
