Patent ID: 7379249

Claim:
A camera apparatus comprising a zoom lens, said zoom lens comprising: a first lens band having a positive focal length; a second lens band having a negative focal length; at least third to fifth lens bands having positive focal lengths; and an aperture diaphragm located in the vicinity of the third lens band; wherein, said second lens band smoothly moves toward the third lens band and said fourth lens band-moves toward a long focal point end when magnification is performed from short to long focal point ends; and wherein a distance (D 1 W) between the first and second lens bands in the short focal point end arrangement, a distance (D 1 T) between the first and second lens bands in the long focal point end arrangement, a distance (D 3 W) between the third and fourth lens bands in the short focal point end arrangement, and a distance (D 3 T) between the third and fourth lens bands in the long focal point end arrangement substantially meet the following inequality: ( D 3 W−D 3 T )/( D 1 T−D 1 W )>0.3.