Zoom lens and imaging device

Details Zoom lens and imaging device Zoom lens and imaging device

2006-10-03

2006-10-03

Lester, Evelyn A. (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S683000, C359S714000, C359S740000, C359S757000, C359S764000, C359S557000

Reexamination Certificate

active

07116489

ABSTRACT:
Disclosed are a zoom lens and an imaging device. The zoom lens has a first lens group with positive refractive power, a second lens group with negative refractive power, a third lens group with positive refractive power, a fourth lens group with positive refractive power, and a fifth lens group including a negative subgroup with negative refractive power and a positive subgroup and with positive refractive power. An aperture stop is disposed in the vicinity of the third lens group. The lens surface of the negative subgroup of the fifth lens group on the image side and nearest to the image is concave, and the lens surface of the positive subgroup of the fifth lens group on the object side and nearest to the object is convex. The positive subgroup shifts in a direction approximately perpendicular to the optical axis to shift an image. The zoom lens satisfies the condition defined by the inequality (1) below:in-line-formulae description="In-line Formulae" end="lead"?0.2<f5p/ft<0.5in-line-formulae description="In-line Formulae" end="tail"?where f5pdenotes the focal length of the positive subgroup of the fifth lens group, and ftdenotes the focal length of the entire lens system in the telephoto end state.

REFERENCES:
patent: 4094586 (1978-06-01), Sato et al.
patent: 4934796 (1990-06-01), Sugiura et al.
patent: 5136430 (1992-08-01), Hamanishi
patent: 5388004 (1995-02-01), Adachi
patent: 5579171 (1996-11-01), Suzuki et al.
patent: 5771123 (1998-06-01), Hamano
patent: 5818646 (1998-10-01), Hamano
patent: 5917658 (1999-06-01), Yamanashi
patent: 5933281 (1999-08-01), Suzuki
patent: 6025962 (2000-02-01), Suzuki
patent: 6094312 (2000-07-01), Nakayama
patent: 6104546 (2000-08-01), Yoshikawa
patent: 6285501 (2001-09-01), Suzuki
patent: 6754446 (2004-06-01), Hagimori et al.
patent: 6825989 (2004-11-01), Uzawa et al.
patent: 6999240 (2006-02-01), Yamada et al.
patent: 2002/0024732 (2002-02-01), Hamano et al.
patent: 2003/0175021 (2003-09-01), Hamano
patent: 2004/0233302 (2004-11-01), Kojima
patent: 11044845 (1999-02-01), None
patent: 2004212611 (2004-07-01), None
patent: 01-055511 (1989-03-01), None
patent: 01-284818 (1989-11-01), None
patent: 2002-244037 (2002-08-01), None
patent: 2003-228001 (2003-08-01), None
patent: 2003-295057 (2003-10-01), None
patent: WO-03/071332 (2003-08-01), None
European Search Report, Dated Feb. 16, 2006.

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