Patent ID: 8169713

Claim:
A zoom lens, comprising: an object side lens group disposed on the object side and including a first variable lens having a deformation surface formed from a deformable transparent material, said object side lens group having a focal length varied by deformation of said first variable lens; an image side lens group disposed on the image side with respect to said object side lens group with an aperture stop sandwiched therebetween and including a second variable lens having a deformation surface formed from a deformable transparent material, said image side lens group having a focal length varied by deformation of said second variable lens; and a lens group disposed between said object side lens group and said image side lens group and including said aperture stop; the deformation of said first and second variable lenses provided in said object side lens group and said image side lens group being controlled to carry out power variation and carry out image surface movement compensation and focusing by the power variation.