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Variable light source with a million-to-one intensity ratioA wide range, variable intensity light source of constant color characteristics has been developed for testing and calibrating photomultiplier tubes. A light attenuator first diffuses light from a constant source, then permits variable attenuation through a series of chambers and adjustable apertures.
Document ID
19630000073
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Snow, W. B.
Date Acquired
August 1, 2013
Publication Date
August 18, 1964
Subject Category
Materials
Report/Patent Number
JPL-WOO-008
Report Number: JPL-WOO-008
Accession Number
63B10424
Funding Number(s)
CONTRACT_GRANT: JPL-950013
CONTRACT_GRANT: NAS7-100
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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