发明名称 Macro Lens and Imaging Apparatus
摘要 A macro lens and an imaging apparatus include, in the order from an object side to an image side, a first lens group, a second lens group, and a third lens group. Focusing is performed by fixing the first lens group and the third lens group, and by moving the second lens group having a positive refractive power as a whole on the optical axis in focusing from an infinite object to a close distance object. The first lens group has a plane S1 and a plane S2 of curvature radii of a same sign and satisfying a specified condition.
申请公布号 US2013271851(A1) 申请公布日期 2013.10.17
申请号 US201313861194 申请日期 2013.04.11
申请人 SOUMA YOSHIHITO 发明人 SOUMA YOSHIHITO
分类号 G02B3/04 主分类号 G02B3/04
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