| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a zoom lens having excellent imaging performance. <P>SOLUTION: Provided is a zoom lens ZL which has a first lens group G1 having positive refractive power, a second lens group G2 having negative refractive power, a third lens group G3 having positive refractive power, a fourth lens group G4 having positive refractive power, and a fifth lens group G5 having negative refractive power. In zooming from a wide angle end state to a telephoto end state, a gap between the first lens group G1 and the second lens group G2 changes, a gap between the second lens group G2 and the third lens group G3 changes, a gap between the third lens group G3 and the fourth lens group G4 changes and a gap between the fourth lens group G4 and the fifth lens group G5 changes. When a focal length of the second lens group G2 is f2 and a focal length in the wide angle end state of the zoom lens ZL is fw, the following conditional expression is satisfied: 0.35<(-f2)/fw<0.49. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
