| 摘要 |
A front projecting system comprising a single lens which is used for photographing an object and also for projecting at the same time a transparency or image on a screen background located behind the object. With such a novel front projecting apparatus, many of the alignment problems associated with prior art dual lens front projection systems are eliminated and because of the exact registration between the object image and its shadow cast on the background, dark edge outlines (or object shadows) are also eliminated.
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