Patent ID: 7108691

Claim:
A system for scanning a light beam over a target, the system comprising: a first lens element disposed along a path of the light beam, the first lens element forming a converging light beam along the path, the converging beam forming a beam focal point beyond which the light beam becomes a diverging light beam; a second lens element disposed along the path of the light beam, the second lens substantially collimating the diverging light beam, the beam focal point being disposed between the first lens element and the second lens element, the second lens having a focal point disposed between the beam focal point and the first lens element; and a first movable mirror for scanning the path of the light beam from a first position on the target to a second position on the target, the mirror having a surface intersecting the beam at a position along the beam path between the first lens element and the second lens element, the path of the collimated light beam from the second lens element in the first position on the target being substantially parallel to the path of the collimated light beam from the second lens element in the second position on the target to within about 30 milliradians or less.