Optical: systems and elements – Lens – With variable magnification
Reexamination Certificate
2008-02-14
2010-06-15
Collins, Darryl J (Department: 2873)
Optical: systems and elements
Lens
With variable magnification
C359S687000, C359S689000
Reexamination Certificate
active
07738181
ABSTRACT:
Providing a compact zoom lens exhibiting optical performance, of which a chromatic aberration in a telephoto state is well corrected. The zoom lens includes a plurality of lens groups, the plurality of lens groups includes at least three lens groups with positive refractive power, each of the three lens groups with positive refractive power has a positive lens, and given conditional expressions are satisfied.
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Collins Darryl J
Miles & Stockbridge P.C.
Nikon Corporation
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