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Fresnel Lens Characterization for Potential Use in an Unpiloted Atmospheric Vehicle DIAL Receiver SystemAcrylic plastic Fresnel lenses are very light and can have large diameters. Such lenses could be used in lidar telescope receivers if the focal spot is not too large or distorted. This research effort characterizes the focal spot diameter produced by a Fresnel lens with a diameter of 30.5 cm (12 in.). It was found that the focal spot diameter varied from 1.2 mm at 750 nm to 1.6 mm at 910 nm. The focal spot was irregular and not easily described by a Gaussian profile.
Document ID
19980197298
Acquisition Source
Langley Research Center
Document Type
Technical Memorandum (TM)
Authors
Fastig, Shlomo (Science Applications International Corp. Hampton, VA United States)
Deoung, Russell J. (NASA Langley Research Center Hampton, VA United States)
Date Acquired
September 6, 2013
Publication Date
May 1, 1998
Subject Category
Optics
Report/Patent Number
NAS 1.15:207665
NASA/TM-1998-207665
L-17700
Funding Number(s)
PROJECT: RTOP 622-29-26-70
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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