DUAL MODE OPTICAL MAGNIFICATION SYSTEM

摘要

A dua-mode image-forming system, for example for a camcorder or digital still camera, comprises an object (1), such as a display, a multi-element magnifying optical path (8) and focal length varying means for addition, adjustment or removal of one or more elements (9) in the optical path in order to vary the distance between "near-to-eye" and "arm's-length" modes of use, in order to vary the distance between a viewer's eye and the system, at which distance the magnified object can be viewed.