| 摘要 |
The zoom lens includes a first lens group G1 having a negative refracting power, an aperture stop FA, a second lens group G2 having a positive refracting power, and a third lens group G3 having a positive refracting power, which are disposed in order from an object side. In this configuration, at least the first lens group G1 and the second lens group G2 move along with changing magnification from the wide-angle end toward the telephoto end, in a manner that a spacing between the first lens group G1 and the second lens group G2 decreases gradually and a spacing between the second lens group G2 and the third lens group G3 increases gradually. Here, the second lens group G2 includes a first cemented lens C1 having at least three pieces of lenses united, and a second cemented lens C2 having at least two pieces of lenses united.
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