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Precise Measurement of Effective Focal LengthComputerized instrument measures effective focal lengths to 0.01 percent accuracy. Laser interferometers measure mirror angle and stage coordinate y in instrument for accurate measurment of focal properties of optical systems. Operates under computer control to measure effective focal length, focal surface shape, modulation transfer function, and astigmatism.
Document ID
19830000023
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Wise, T. D. (Hughes Aircraft Co.)
Young, J. B. (Hughes Aircraft Co.)
Date Acquired
August 11, 2013
Publication Date
August 1, 1983
Publication Information
Publication: NASA Tech Briefs
Volume: 7
Issue: 3
ISSN: 0145-319X
Subject Category
Physical Sciences
Report/Patent Number
GSC-12745
Accession Number
83B10023
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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