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Defocus Measurement Using a Liquid Crystal Point Diffraction InterferometerA liquid crystal PDI is demonstrated by measuring the defocus change between two positions of the interferometer. Errors caused by average intensity variations are discussed.
Document ID
19950006335
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Mercer, Carolyn R. (NASA Lewis Research Center Cleveland, OH, United States)
Creath, Katherine (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 6, 2013
Publication Date
August 1, 1994
Subject Category
Instrumentation And Photography
Report/Patent Number
NAS 1.15:106687
NASA-TM-106687
E-9043
Report Number: NAS 1.15:106687
Report Number: NASA-TM-106687
Report Number: E-9043
Meeting Information
Meeting: Optical Fabrication and Testing Workshop
Location: Rochester, NY
Country: United States
Start Date: June 6, 1994
End Date: June 9, 1994
Accession Number
95N12748
Funding Number(s)
PROJECT: RTOP 505-62-50
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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