Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
July 21, 2009
Patent Application Number
11680968
Date Filed
March 1, 2007
Patent Primary Examiner
Patent abstract
An interferometer system is disclosed which is configured to combine measurement light with reference light to form an optical interference pattern, where the interferometer system includes a modulator configured to repetitively introduce a sequence of phase shifts between the measurement and reference light; and a camera system positioned to measure the optical interference pattern, where the camera system is configured to separately accumulate time-integrated images of the optical interference pattern corresponding to the different phase shifts in the sequence during the repetitions of the sequence.
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