发明名称 CLOSE-DISTANCE CORRECTING LENS SYSTEM
摘要 A close-distance correcting lens system includes a positive first lens group and a negative second lens group, wherein traveling distances of the first lens group and the second lens group toward the object side differ from each other when carrying out a focusing operation on an object at infinity to an object at a close distance. The first lens group includes a positive first sub lens group, a negative second sub lens group, a diaphragm, and a positive third sub lens group, in that order from the object side. The second sub lens group includes an image-stabilizing lens group which is arranged to move in a direction orthogonal to the optical axis to change an imaging position of the object image to thereby correct any image shake of the object image.
申请公布号 US2013222925(A1) 申请公布日期 2013.08.29
申请号 US201313777324 申请日期 2013.02.26
申请人 PENTAX RICOH IMAGING COMPANY, LTD.;PENTAX RICOH IMAGING COMPANY, LTD. 发明人 ONOZAKI TATSUYUKI;SAORI MASAKAZU
分类号 G02B13/00 主分类号 G02B13/00
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