Patent ID: 9696529
Date: 2017-07-04
CPC Classifications: G02B

Claim:
1. A zoom lens, comprising, 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 third lens unit having a positive refractive power; a fourth lens unit having a positive refractive power; and a fifth lens unit having a negative refractive power, wherein at a telephoto end as compared to a wide angle end, an interval between the first lens unit and the second lens unit is increased, and an interval between the second lens unit and the third lens unit is decreased, wherein an interval between each pair of adjacent lens units is changed during zooming, wherein the fifth lens unit is configured to move in an optical axis direction during focusing, and wherein the following conditional expressions are satisfied: where fw represents a focal length of the zoom lens at the wide angle end, f3 represents a focal length of the third lens unit, and m5 represents a movement amount of the fifth lens unit during zooming from the wide angle end to the telephoto end.