Apparatus for sensing wavefront aberration
Patent 5120128 Issued on June 9, 1992. Estimated Expiration Date: 
January 14, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
January 14, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesOptical wavefront sensing system Patent #: 4725138 InventorsAssigneeApplicationNo. 641444 filed on 01/14/1991US Classes:356/121, LAMP BEAM DIRECTION OR PATTERN250/201.9Light beam wavefront phase adaptationExaminersPrimary: Rosenberger, Richard A.Attorney, Agent or FirmInternational ClassG01J 001/20AbstractA wavefront aberration sensor includes a beam splitter, one or more aberration sensor modules and a photodetector for sensing total light power. The aberration sensor modules each provide two voltage outputs from a pair of photodetectors. Differences in the voltage pairs are normalized by the total light power to represent signed aberration amplitudes of phase aberrations present in an input optical beam. The aberration amplitudes may be combined in a digital computer to provide a reconstructed wavefront. | |
