Zoom lens system

Details Zoom lens system Zoom lens system

2006-09-26

2009-10-06

Choi, William C (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

Reexamination Certificate

active

07599127

ABSTRACT:
Providing a zoom lens system having excellently correcting various aberrations with accomplishing to be compact, lightweight, and slim upon being retracted. The system is composed of, in order from an object, a first group having negative refractive power, and a second group having positive refractive power. Upon zooming from a wide-angle end state to a telephoto end state, a distance between the first group and the second group varies. The first group is composed of two lens elements which are, in order from the object, a negative lens having a concave surface facing an image, and a positive lens. The second group consists of three lens elements or less and includes, in order from the object, a positive lens, an aperture stop for defining an f-number, and a negative lens component including a negative lens and disposed to the image side of the aperture stop. Given conditions are satisfied.

REFERENCES:
patent: 5539581 (1996-07-01), Sato
patent: 6275342 (2001-08-01), Sakamoto et al.
patent: 6487024 (2002-11-01), Sato
patent: 6762887 (2004-07-01), Tomioka
patent: 2003/0184876 (2003-10-01), Tomioka
patent: 2004/0015890 (2004-01-01), Wong et al.
patent: 2005/0063069 (2005-03-01), Nishimura
patent: 2006/0007559 (2006-01-01), Sato
patent: 10-206733 (1998-08-01), None
patent: 2003-287677 (2003-10-01), None

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