Wide-angle zoom lens system

Details Wide-angle zoom lens system Wide-angle zoom lens system

2005-04-26

2005-04-26

Lester, Evelyn A. (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S683000, C359S714000, C359S753000, C359S770000

Reexamination Certificate

active

06885506

ABSTRACT:
A wide-angle zoom lens system includes a negative first lens group, a positive second lens group, a positive third lens group, a negative fourth lens group, and a positive fifth lens group. Upon zooming from the short to the long focal length extremities, the first lens group moves toward the image and thereafter moves toward the object, the distance between the first and second lens group decreases, the distance between the second and third lens groups decreases, the distance between the third and fourth lens groups increases, and the distance between the fourth and fifth lens groups decreases.

REFERENCES:
patent: 5774267 (1998-06-01), Kodama et al.
patent: 5847875 (1998-12-01), Kodama et al.
patent: 6008952 (1999-12-01), Yamamoto
patent: 6108136 (2000-08-01), Yamanashi
patent: 6137638 (2000-10-01), Yamagishi et al.
patent: 6222680 (2001-04-01), Yamamoto et al.
patent: 6246529 (2001-06-01), Sensui
patent: 6480340 (2002-11-01), Yamamoto
patent: 6515803 (2003-02-01), Hirose
patent: 6542311 (2003-04-01), Nagahara
patent: 6545817 (2003-04-01), Hirose
patent: 6580564 (2003-06-01), Nagahara
patent: 6587279 (2003-07-01), Narimatsu et al.
patent: 6738196 (2004-05-01), Yamamoto
patent: 20020181120 (2002-12-01), Nagahara
patent: 20030165019 (2003-09-01), Yamamoto
patent: 20030184874 (2003-10-01), Nagahara
patent: 9-230242 (1997-09-01), None
patent: 7-306362 (1997-11-01), None
patent: 2000-131611 (2000-05-01), None
patent: 2000-292701 (2000-10-01), None

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