| 摘要 |
A zoom lens device includes, in sequence from an object side to an imaging side, a negative first lens group, a positive second lens group, and a positive third lens group. When the zoom lens device is moved from a wide-angle condition to a telephoto condition, the second lens group moves towards the object side while the first lens group moves firstly towards the imaging side and then towards the object side to thereby reducing the distance between the first and second lens groups. The third lens group moves only when the zoom lens devices focuses.
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