Patent ID: 6850372

Claim:
An optical zoom lens mechanism arranged along an optical axis, comprising: a first lens group comprising at least two adjacent transparent fist optical lens plates that are each rotationally nonsymmetric relative to the optical axis; a first-group drive operable to move the first optical lens plates together and also by a first relative movement to each other in a first-movement radial direction relative to the optical axis; a second lens group comprising at least two adjacent transparent second optical lens plates that are each rotationally nonsymmetric relative to the optical axis, wherein the second lens group is spaced apart from the first lens group in an axial direction along the optical axis; and a second-group drive operable to move the second optical lens plates together and also by a second relative movement to each other in a second-movement radial direction relative to the optical axis, wherein the second-movement radial direction is angularly rotated from the first-movement radial direction by a rotational angle about the optical axis of about 90 degrees, and wherein the fist optical lens plates and the second optical lens plates are shaped so that the first relative movement of the first optical lens plates and the second relative movement of the second optical lens plates produces an optical zoom relative to a focal surface.