Optical: systems and elements – Lens – With variable magnification
Reexamination Certificate
2007-04-02
2008-11-11
Lester, Evelyn A. (Department: 2873)
Optical: systems and elements
Lens
With variable magnification
C359S676000, C359S684000, C359S685000, C359S686000, C359S714000, C359S740000, C359S766000
Reexamination Certificate
active
07450314
ABSTRACT:
A zoom lens system comprises, in order from an object side, a first lens unit having a positive refractive power; a second lens unit having a negative refractive power; a third lens unit having a positive refractive power; a fourth lens unit having a negative refractive power; and a fifth lens unit having a positive refractive power, and during magnification change from a wide-angle end to a telephoto end, each of the space between the respective lens units changes.
REFERENCES:
patent: 5659426 (1997-08-01), Aoki
patent: 7177092 (2007-02-01), Satori et al.
patent: 2006/0146418 (2006-07-01), Aoki
patent: 2003-255228 (2003-09-01), None
Kamo Yuji
Ono Kenji
Satori Tomoyuki
Kenyon & Kenyon LLP
Lester Evelyn A.
Olympus Imaging Corp.
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