发明名称 Zoom lens and image capture apparatus
摘要 A zoom lens includes, in order from an object side, a first lens group having a positive refractive power and fixed in an optical axis direction, a second lens group having a negative refractive power and moving along an optical axis to zoom, a third lens group having a positive refractive power and fixed in the optical axis direction, and a fourth lens group having a positive refractive power and moving in a non straight line along the optical axis to compensate variations of an image formation position and compensate change of the image formation position caused by changes of an object distance.
申请公布号 EP1936418(A1) 申请公布日期 2008.06.25
申请号 EP20070254799 申请日期 2007.12.12
申请人 SONY CORPORATION 发明人 SUZAKI, MITSUHIRO;NANJO, YUSUKE;ARITA, SHINICHI;TOYODA, KOJI
分类号 G02B7/10;G02B13/18;G02B15/173 主分类号 G02B7/10
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