| 摘要 |
<p>A zoom lens consists of, in order from the object, a first group G1 having negative power and a second group G2 having positive power. Upon zooming from wide-angle end to telephoto end, the distance between the first group G1 and the second group G2 decreases. The first group G1 consists of, in order from the object, a first lens L1 with negative power and a second lens L2 with positive power. The second group G2 consists of three lenses that are, in order from the object, a third lens L3 with positive power, a fourth lens L4 with negative power having a convex surface facing the object, a fifth lens L5 with positive power. The three lenses are disposed without being cemented each other.</p> |
