Patent ID: 7988292

Claim:
A system, comprising: a projecting optical system adapted to project light onto an object; a pre-correction system adapted to compensate a light beam to be projected onto the object for at least one aberration in the object, the pre-correction system being positioned in between the projecting optical system and the object and comprising a telescope having two lenses, at least one of the lenses being movable; an imaging system adapted to collect light scattered by the object; a wavefront sensor adapted to receive the light collected by the imaging system and to sense a wavefront of the received light; means for adjusting the compensation applied to the light beam by the pre-correction system to thereby change the wavefront of the light received by the wavefront sensor; means for stitching together the sensed wavefronts of the light received by the wavefront sensor for each compensation to map a surface of the object; and a dynamic range limiting aperture disposed in an optical path between the two lenses and being adapted to insure that the wavefront sensor only sees light within a dynamic range of the system; wherein the means for stitching further comprises a processor, the processor further being adapted to move the movable lens to a plurality of positions and to stitch together the sensed wavefronts of the light received by the wavefront sensor at each of the positions.