| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a macro lens suppressing aberration with focusing and fluctuation of an image surface in vibration absorption while avoiding complication of a configuration and an increase in lenses and attaining an excellent image quality in the macro lens capable of capturing an image at a magnification of 1:2 or more, having a vibration-absorbing mechanism and having a diagonal field angle of substantially 20°-25°. <P>SOLUTION: This macro lens comprises, in order from an object side, a first positive lens group L1 that is fixed to the image surface in focusing; a second lens group L2 including a lens group that moves towards the image surface in focusing; and a third negative lens group L3 that is fixed to the image surface in focusing. The second lens group L2 includes at least a negative L2a lens component L2a, a positive L2b lens component L2b, and a positive L2c lens component L2c; the third lens group L3 comprises a negative L3a lens component L3a, and a positive L3b lens component L3b; and the L3a lens component L3a corrects an image blur and satisfies a prescribed condition. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
