Invention Grant
US08203627B2 Compact optical zoom 有权
紧凑型光学变焦

Compact optical zoom
Abstract:
A zoom lens system includes a variator lens group, a compensator lens group and a third lens group. The compensator lens group is arranged to only partially compensate for movement of the variator group. In order to provide further compensation for the zoom lens, an image enhancer implement wavefront coding and artifact reduction techniques. The compensator group may be fixed or alternatively, its movement relative to the variator may be effected by a simple cam mechanism.
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