Optical: systems and elements – Lens – With variable magnification
Patent
1997-10-27
1998-10-27
Epps, Georgia Y.
Optical: systems and elements
Lens
With variable magnification
359554, 359557, 359687, 359690, G02B 1514, G02B 2764
Patent
active
058284990
ABSTRACT:
A high variable power zoom lens system that performs image formation and also covers a wide-angle area. The zoom lens includes a first lens group having a positive refractive power arranged at the object side, a second lens group having a negative refractive power adjacent to the image side of the first lens group and a third lens group having a positive refractive power adjacent to the image side of the second lens group. The second lens group includes, in order from the object side, a double concave lens component, a positive lens having a convex surface facing the object side and a negative lens with the concave surface facing the object side. The zoom lens system preferably satisfies the following Conditions:
REFERENCES:
patent: 4749265 (1988-06-01), Hattori et al.
patent: 4844602 (1989-07-01), Kitagishi et al.
patent: 4907868 (1990-03-01), Kitagishi et al.
patent: 4929069 (1990-05-01), Shibayama
patent: 4974950 (1990-12-01), Yamazaki et al.
patent: 4986643 (1991-01-01), Moriyama
patent: 5032013 (1991-07-01), Shibayama
patent: 5039211 (1991-08-01), Maruyama
patent: 5182673 (1993-01-01), Kikuchi et al.
patent: 5241420 (1993-08-01), Yamanashi
patent: 5270857 (1993-12-01), Oizumi et al.
patent: 5337098 (1994-08-01), Imafuji et al.
patent: 5402197 (1995-03-01), Okano et al.
patent: 5416558 (1995-05-01), Katayama et al.
patent: 5477297 (1995-12-01), Suzuki
patent: 5493447 (1996-02-01), Ohtake
patent: 5568321 (1996-10-01), Ogawa et al.
patent: 5579171 (1996-11-01), Suzuki et al.
Epps Georgia Y.
Nikon Corporation
Schwartz Jordan M.
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