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Zoom lens system, imaging apparatus, and method for zooming the zoom lens system




Title: Zoom lens system, imaging apparatus, and method for zooming the zoom lens system.
Abstract: Providing a zoom lens system having excellent optical performance with a high zoom ratio, an imaging apparatus, and a method for zooming the zoom lens system. The system including, in order from an object, a first group G1 having negative refractive power, a second group G2 having positive refractive power, a third group G3 having negative refractive power, and a fourth group G4 having positive refractive power. An aperture stop S is disposed between the second group G2 and the fourth group G4. Upon zooming from a wide-angle end state to a telephoto end state, each group is moved such that a distance between the second group G2 and the third group G3 increases, a distance between the third group G3 and the fourth group G4 decreases, and the aperture stop S is moved together with the third group G3. Given conditions are satisfied. ...


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USPTO Applicaton #: #20120275032
Inventors: Satoru Shibata, Takeshi Suzuki, Hiroshi Yamamoto


The Patent Description & Claims data below is from USPTO Patent Application 20120275032, Zoom lens system, imaging apparatus, and method for zooming the zoom lens system.




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stats Patent Info
Application #
US 20120275032 A1
Publish Date
11/01/2012
Document #
13545651
File Date
07/10/2012
USPTO Class
359680
Other USPTO Classes
International Class
02B15/177
Drawings
50




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20121101|20120275032|zoom lens system, imaging apparatus, and zooming the zoom lens system|Providing a zoom lens system having excellent optical performance with a high zoom ratio, an imaging apparatus, and a method for zooming the zoom lens system. The system including, in order from an object, a first group G1 having negative refractive power, a second group G2 having positive refractive power, |Nikon-Corporation
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