Zoom lens and image pickup apparatus

Details Zoom lens and image pickup apparatus Zoom lens and image pickup apparatus

2006-08-15

2006-08-15

Sugarman, Scott J. (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S676000

Reexamination Certificate

active

07092170

ABSTRACT:
A three-group zoom lens, includes, in order from an object side thereof: a first lens group having a negative refractive power, including in order from the object side: a negative-power first lens; and a positive-power second lens, wherein the first lens group including at least one aspherical surface, a second lens group having a positive refractive power, including in order from the object side thereof, a positive-power first lens; a positive-power second lens; and a negative-power third lens; wherein the positive-power second lens and the negative-power third lens are cemented together to form a meniscus-shaped cemented lens that faces a convex surface to the object side and the second lens group has aspherical surfaces on at least two surfaces other than a cemented surface of the cemented lens; and a third lens group having a positive refractive power, including: a positive-power single lens having only a spherical surface.

REFERENCES:
patent: 6646815 (2003-11-01), Nobe
patent: 6785057 (2004-08-01), Ori
patent: 6804064 (2004-10-01), Hirakawa
patent: 6839184 (2005-01-01), Shan
patent: 6900947 (2005-05-01), Nakatani et al.
patent: 6919994 (2005-07-01), Tanaka
patent: 2003/0169509 (2003-09-01), Iyama
patent: 2002-372667 (2002-12-01), None

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