Zoom lens system and image pickup apparatus including the same

Details Zoom lens system and image pickup apparatus including the same Zoom lens system and image pickup apparatus including the same

2007-08-07

2007-08-07

Sugarman, Scott J. (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S684000

Reexamination Certificate

active

11299208

ABSTRACT:
At least one exemplary embodiment is directed to a zoom lens system which includes, in order from an object side to an image side, a first lens unit with positive optical power, a second lens unit with negative optical power, a third lens unit with positive optical power, a fourth lens unit with positive or negative optical power, and a fifth lens unit with positive optical power. In at least one exemplary embodiment of this zoom lens system, during zooming, the second lens unit, the third lens unit, and the fifth lens unit can move along the optical axis.

REFERENCES:
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patent: 5388004 (1995-02-01), Adachi
patent: 5530592 (1996-06-01), Tochigi
patent: 5880892 (1999-03-01), Ohtake
patent: 5973854 (1999-10-01), Shimo
patent: 2004/0125462 (2004-07-01), Misaka
patent: 5-215967 (1993-08-01), None
patent: 6-317752 (1994-11-01), None
patent: 2000-180724 (2000-06-01), None
patent: 2002-365547 (2002-12-01), None

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