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Broadband, Achromatic Twyman-Green InterferometerImproved Twyman-Green interferometer used in wave-front testing optical components at wavelengths from 200 to 1,100 nm, without having to readjust focus when changing wavelength. Built to measure aberrations of light passing through optical filters. Collimating and imaging lenses of classical Twyman-Green configuration replaced by single spherical mirror. Field lens replaced by field mirror. Mirrors exhibit no axial chromatic aberration and made to reflect light efficiently over desired broad range of wavelengths.
Document ID
19910000505
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Steimle, Lawrence J.
(Caltech)
Date Acquired
August 14, 2013
Publication Date
October 1, 1991
Publication Information
Publication: NASA Tech Briefs
Volume: 15
Issue: 10
ISSN: 0145-319X
Subject Category
Physical Sciences
Report/Patent Number
NPO-17675
Accession Number
91B10505
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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