Optical: systems and elements – Lens – Multiple component lenses
Patent
1997-09-10
2000-02-15
Ben, Loha
Optical: systems and elements
Lens
Multiple component lenses
359764, 359557, G02B 960
Patent
active
060259620
ABSTRACT:
A zoom lens system with an anti-vibration function, which is provided with, in order from the object end: a first lens group having a positive refractive power, a second lens group having a negative refractive power, a third lens group having a positive refractive power, a fourth lens group having a negative refractive power, and a fifth lens group having a positive refractive power, and whose focal length at the wide-angle end is shorter than the diagonal width of the image plane of the zoom lens system, at least one lens group selected from the first lens group and the fifth lens group moves toward the object end and all of the distances between each of the lens groups are changed when zooming from the wide-angle end to the telephoto end. At least one lens group selected from the second, third, and fourth lens groups moves in a direction substantially perpendicular to the optical axis of the zoom lens system when preventing vibration.
REFERENCES:
patent: 4235521 (1980-11-01), Imai
patent: 4451125 (1984-05-01), Sato
patent: 5502594 (1996-03-01), Suzuki et al.
patent: 5585969 (1996-12-01), Endo
patent: 5642224 (1997-06-01), Suzuki
patent: 5760957 (1998-06-01), Suzuki
patent: 5774267 (1998-06-01), Kodama et al.
patent: 5781348 (1998-07-01), Ohtake
Ben Loha
Meller Michael N.
Nikon Corporation
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