Patent ID: 7630146

Claim:
A two-unit zoom lens comprising, in order from an object side thereof: a first lens unit having a negative refracting power; and a second lens unit having a positive refracting power, wherein during zooming from a wide angle end to a telephoto end, a distance between the first lens unit and the second lens unit decreases, the first lens unit comprises a negative lens component in the form of a cemented lens component having a negative refracting power, the negative lens component comprises, in order from the object side, a negative lens having a concave surface directed toward the image side and a positive lens having a convex surface directed toward the object side, the total number of lens component included in the first lens unit is one, and the second lens unit comprises a cemented lens component having at least one negative lens and a positive lens, where the term “lens component” refers to a lens member whose surfaces that are in contact with air on an optical axis include only two surfaces, one being an object side surface and the other being an image side surface.