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Dual mode laser velocimeterDescribed is a laser Doppler velocimeter (LDV) which is capable of operating with a small focus diameter for analyzing fluid flows at low velocity with high spatial resolution, or with a larger focus diameter to measure fluid flows at higher velocities accurately. More particularly, this is an LDV in which a simple reversal of a lens pair will allow it to operate in the two focus diameter modes.
Document ID
19880004968
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Gunter, William D., Jr. (NASA Ames Research Center Moffett Field, CA, United States)
Donaldson, Ralph W. (NASA Ames Research Center Moffett Field, CA, United States)
Anderson, Alma G., Jr. (NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
August 13, 2013
Publication Date
October 6, 1987
Subject Category
Lasers And Masers
Report/Patent Number
Patent Application Number: US-PATENT-APPL-SN-846427
Patent Number: US-PATENT-4,697,922
Patent Number: NASA-CASE-ARC-11634-1
Accession Number
88N14350
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-PATENT-4,697,922|NASA-CASE-ARC-11634-1
Patent Application
US-PATENT-APPL-SN-846427

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