| 摘要 |
A zoom lens includes, in order from an object side to an image side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, a reflection unit including a reflection surface for bending an optical path, a third lens unit having a negative refractive power, a fourth lens unit having a positive refractive power, and a fifth lens unit having one of a positive refractive power and a negative refractive power. In the zoom lens, at least the second lens unit and the fourth lens unit move during zooming while the reflection unit remains stationary. In addition, a focal length of the first lens unit and respective focal lengths of the zoom lens at a wide-angle end and at a telephoto end are appropriately set.
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