| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a compact zoom lens which has a reflection optical element, reduces a lens length nearer to the object side than the reflection optical element to achieve thinning while having a wider angle of view. <P>SOLUTION: A zoom lens includes, in order from the object side, a first lens group G1 having a negative refractive power, a second lens group G2 and a third lens group G3, the first lens group G1 includes, in order from the object side, at least one negative lens L11 and a reflection optical element P for folding an optical path, and in a magnification from a wide-angle end state W to a telephoto end state T, a position of the first lens group G1 is fixed, satisfying a predetermined conditional expression. <P>COPYRIGHT: (C)2012,JPO&INPIT |
