Optical: systems and elements – Lens – With variable magnification
Reexamination Certificate
2006-02-21
2006-02-21
Epps, Georgia (Department: 2873)
Optical: systems and elements
Lens
With variable magnification
C359S691000
Reexamination Certificate
active
07002755
ABSTRACT:
The invention provides a zoom lens that comprises a reduced number of lens elements, is compact and simplified, and has high image-formation capability, thereby achieving thorough size reductions in video cameras or digital cameras, and an electronic imaging system using the same. The zoom lens comprises, in order from its object side, a lens group A (G1) having negative refracting power and a lens group B (G2) having positive refracting power. For zooming, the lens groups A and B are designed to move. The lens group B is composed of three meniscus lenses, each convex on its object side.
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Patent Abstracts of Japan, JP-2000-267009 Sep. 29, 2000, Minolta Co Ltd.
Mihara Shin'ichi
Miyajima Toru
Miyauchi Yuji
Watanabe Masahito
Epps Georgia
Hasan M.
Kenyon & Kenyon
Olympus Corporation
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