| 摘要 |
An optical system is disclosed for substantially doubling the capacity of a photocopying apparatus or the like. It provides alternative modes of operation; adjacent imaging of adjacent objects or double imaging of a single object. In the adjacent imaging mode, a single projection lens projects adjacent images of two adjacent objects in a straightforward way. In the alternative double imaging mode, a pair of projection lenses projects twin images of a single object along "parallel" optical paths. In the double imaging mode, a field stop is included to block light from the vacated half of the object station. The field stop is located near the first lens on its object side.
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