Patent ID: 6577447
Filing Date: 2003-06-10
Classification: G01J,G03F

Abstract:
A method for reducing an optical interference in a wavefront sensor, comprising the steps of:providing a multi-lens array in a two-dimension configuration; focusing an incoming wavefront with the multi-lens array to form a plurality of focal spots; and systematically off-setting portions of the plurality of focal spots to create a staggered two-dimension diffraction pattern to reduce an optical interference between focal spots, wherein the step of systematically off-setting further comprises: modifying portions of the multi-lens array corresponding to the portions of the plurality of focal spots to create the staggered two-dimension diffraction pattern, the modified portions of the multi-lens array shifting the portions of the plurality of focal spots, wherein the modifying step of further comprises: attaching a prism to each of the modified portions of the multi-lens array, each prism having a configuration to form one of the portions of the plurality of focal spots to create the staggered two-dimension diffraction pattern.