Patent ID: 7253962

Claim:
A zoom lens, comprising: a first lens unit exhibiting a positive refractive power and always being statically positioned along an optical axis when a power of the zoom lens is varied or focusing is carried out, and including a reflective optical element for bending an optical path; a second lens unit exhibiting a negative refractive power, and including a negative lens, a negative lens and a positive lens, along the optical axis in this order from an object side; a third lens unit exhibiting a positive refractive power; a fourth lens unit exhibiting a positive refractive power, and including at least two positive lenses; and a fifth lens unit exhibiting a negative refractive power; wherein the first through fifth lens units are arranged along the optical axis in this order from an object side to an image side in the zoom lens, and the second lens unit, the fourth lens unit and the fifth lens unit are moved for varying the power of the zoom lens.