Patent ID: 8243183

Claim:
An image pickup apparatus comprising: a zoom lens including a reflecting member having a reflecting surface that bends an optical path; and an image pick element that is disposed on the image side of the zoom lens, has an image pickup surface, and converts an image formed on the image pickup surface by the zoom lens into an electrical signal, wherein the zoom lens comprises an optical path reflecting lens group that includes the reflecting member and has a positive refracting power, a movable negative lens group that is disposed in the optical path on the image side of the optical path reflecting lens group, has a negative refracting power, and moves during zooming, a movable positive lens group that is disposed in the optical path on the image side of the movable negative lens group, has a positive refracting power, and moves during zooming, and an aperture stop that is disposed in the optical path between the movable negative lens group and the movable positive lens group, the optical path reflecting lens group is a lens group that is disposed closest to the object side in the zoom lens; during zooming from the wide angle end to the telephoto end, the distance between the optical path reflecting lens group and the image pickup surface is constant, the movable negative lens group moves in such a way that it is located farther from the optical path reflecting lens group and closer to the image pickup surface at the telephoto end than at the wide angle end, and the movable positive lens group moves in such a way that it is located closer to the optical path reflecting lens group and farther from the image pickup surface at the telephoto end than at the wide angle end, and the movable positive lens group comprises at least five lenses including a plurality of positive lenses and a plurality of negative lenses.