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Title: Photonic Doppler velocimetry lens array probe incorporating stereo imaging

Abstract

A probe including a multiple lens array is disclosed to measure velocity distribution of a moving surface along many lines of sight. Laser light, directed to the moving surface is reflected back from the surface and is Doppler shifted, collected into the array, and then directed to detection equipment through optic fibers. The received light is mixed with reference laser light and using photonic Doppler velocimetry, a continuous time record of the surface movement is obtained. An array of single-mode optical fibers provides an optic signal to the multiple lens array. Numerous fibers in a fiber array project numerous rays to establish many measurement points at numerous different locations. One or more lens groups may be replaced with imaging lenses so a stereo image of the moving surface can be recorded. Imaging a portion of the surface during initial travel can determine whether the surface is breaking up.

Inventors:
;
Issue Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1213454
Patent Number(s):
9,121,861
Application Number:
14/214,234
Assignee:
National Security Technologies, LLC (Las Vegas, NV)
DOE Contract Number:  
AC52-06NA25946
Resource Type:
Patent
Resource Relation:
Patent File Date: 2014 Mar 14
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY

Citation Formats

Malone, Robert M., and Kaufman, Morris I. Photonic Doppler velocimetry lens array probe incorporating stereo imaging. United States: N. p., 2015. Web.
Malone, Robert M., & Kaufman, Morris I. Photonic Doppler velocimetry lens array probe incorporating stereo imaging. United States.
Malone, Robert M., and Kaufman, Morris I. Tue . "Photonic Doppler velocimetry lens array probe incorporating stereo imaging". United States. https://www.osti.gov/servlets/purl/1213454.
@article{osti_1213454,
title = {Photonic Doppler velocimetry lens array probe incorporating stereo imaging},
author = {Malone, Robert M. and Kaufman, Morris I.},
abstractNote = {A probe including a multiple lens array is disclosed to measure velocity distribution of a moving surface along many lines of sight. Laser light, directed to the moving surface is reflected back from the surface and is Doppler shifted, collected into the array, and then directed to detection equipment through optic fibers. The received light is mixed with reference laser light and using photonic Doppler velocimetry, a continuous time record of the surface movement is obtained. An array of single-mode optical fibers provides an optic signal to the multiple lens array. Numerous fibers in a fiber array project numerous rays to establish many measurement points at numerous different locations. One or more lens groups may be replaced with imaging lenses so a stereo image of the moving surface can be recorded. Imaging a portion of the surface during initial travel can determine whether the surface is breaking up.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {9}
}

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Works referenced in this record:

Studies of the wind filtering effect of gravity waves observed at Allahabad (25.45°N, 81.85°E) in India
journal, March 2010

  • Mukherjee, G. K.; R, Pragati Sikha; Parihar, N.
  • Earth, Planets and Space, Vol. 62, Issue 3, p. 309-318
  • DOI: 10.5047/eps.2009.11.008