| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a high variable power imaging lens having a small size and an imaging apparatus using the imaging lens. <P>SOLUTION: The imaging lens comprises, in order from an object side, a first lens group GR1 fixed when varying power and having negative power, a second lens group GR2 moved along an optical axis when varying power and having positive power, a third lens group GR3 moved along the optical axis when varying power and having negative power, and a fourth lens group GR4 fixed when varying power and having positive power. The first lens group GR1 includes a reflection member PM for folding the optical axis. The imaging lens satisfies the following conditional expression, 3.2<(β2t/β2w)/(β3t/β3w)<5.0, whereβ2w is a lateral magnification at a wide angle end, of the second lens group GR2,β2t is a lateral magnification at a telephoto end, of the second lens group GR2,β3w is a lateral magnification at a wide angle end, of the third lens group GR3, andβ3t is a lateral magnification at a telephoto end, of the third lens group GR3. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
