| 摘要 |
A variable focal length optical system includes, in succession from an object side, a first lens component, a second lens component, a third lens component, and a fourth lens component, wherein at least two air gaps of a first air gap between the first lens component and the second lens component, a second air gap between the second lens component and the third lens component, and a third air gap between the third lens component and the fourth lens component change when the focal length of the zoom lens is changed.
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