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专利名称：VARIABLE POWER OPTICAL SYSTEM,
IMAGING DEVICE, AND VARIABLE POWEROPTICAL SYSTEM PRODUCTION METHOD
发明人：ITO, Tomoki,YAMAMOTO, Hiroshi申请号：EP15770184.8申请日：20150326公开号：EP3125011B1公开日：20190828
摘要：The art is formed of, disposed in order from an object, a first lens group (G1)having positive refractive power, a second lens group (G2) having negative refractivepower, and a third lens group (G3) having positive refractive power, in which at least a partof the second lens group (G2) or at least a part of the third lens group (G3) is configuredto be movable, as a vibration-proof lens group for correcting an image blur, so as to havea component in a direction perpendicular to an optical axis, and the following conditionalexpression is satisfied: 4.40 < f 1 / ˆ’ f 2 < 8.00 where f1 denotes a focal length of thefirst lens group (G1), and f2 denotes a focal length of the second lens group (G2) .
代理机构：Hoffmann Eitle
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