Interference phenomenon with correlated masks and its applications

C. P. Grover, K. Hane

Research output: Contribution to journalConference articlepeer-review


We describe the interference fringes produced when periodic and aperiodic (random) amplitude masks are illuminated with partially coherent light. Periodic transmission gratings and the recordings of laser speckle patterns have been used to constitute the masks. We will discuss applications to measure the motion of objects and in particular study the rotational motion measurement using random masks.

Original languageEnglish
Pages (from-to)624-631
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Issue numberpt 2
Publication statusPublished - 1990
EventOptical Testing and Metrology III: Recent Advances in Industrial Optical Inspection - San Diego, CA, USA
Duration: 1990 Jul 81990 Jul 13


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