Zoom lens system and an image pickup apparatus including the...

Details Zoom lens system and an image pickup apparatus including the... Zoom lens system and an image pickup apparatus including the...

2009-06-02

2011-12-27

Sugarman, Scott J (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S686000, C359S689000

Reexamination Certificate

active

08085476

ABSTRACT:
A zoom lens system is provided that can be used as an optical system for an image pick-up device, which can have improved shading characteristics using multiple lens units, for example three lens units.

REFERENCES:
patent: 4854680 (1989-08-01), Kikuchi
patent: 5182673 (1993-01-01), Kikuchi et al.
patent: 7589906 (2009-09-01), Ito
patent: 63-221313 (1988-09-01), None
patent: 04-218013 (1992-08-01), None
patent: 10-206735 (1998-08-01), None
patent: 2002-072093 (2002-03-01), None

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