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Title: Backscatter absorption gas imaging system

Abstract

A video imaging system for detecting hazardous gas leaks. Visual displays of invisible gas clouds are produced by radiation augmentation of the field of view of an imaging device by radiation corresponding to an absorption line of the gas to be detected. The field of view of an imager is irradiated by a laser. The imager receives both backscattered laser light and background radiation. When a detectable gas is present, the backscattered laser light is highly attenuated, producing a region of contrast or shadow on the image. A flying spot imaging system is utilized to synchronously irradiate and scan the area to lower laser power requirements. The imager signal is processed to produce a video display.

Inventors:
 [1]
  1. (Livermore, CA)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
865686
Patent Number(s):
US 4555627
Assignee:
United States of America as represented by United States (Washington, DC) LLNL
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
backscatter; absorption; gas; imaging; video; detecting; hazardous; leaks; visual; displays; invisible; clouds; produced; radiation; augmentation; field; view; device; corresponding; line; detected; imager; irradiated; laser; receives; backscattered; light; background; detectable; highly; attenuated; producing; region; contrast; shadow; image; flying; spot; utilized; synchronously; irradiate; scan; power; requirements; signal; processed; produce; display; visual display; power requirements; background radiation; imaging device; laser light; absorption line; laser power; video display; radiation corresponding; gas leak; gas leaks; power requirement; /250/

Citation Formats

McRae, Jr., Thomas G.. Backscatter absorption gas imaging system. United States: N. p., 1985. Web.
McRae, Jr., Thomas G.. Backscatter absorption gas imaging system. United States.
McRae, Jr., Thomas G.. Tue . "Backscatter absorption gas imaging system". United States. https://www.osti.gov/servlets/purl/865686.
@article{osti_865686,
title = {Backscatter absorption gas imaging system},
author = {McRae, Jr., Thomas G.},
abstractNote = {A video imaging system for detecting hazardous gas leaks. Visual displays of invisible gas clouds are produced by radiation augmentation of the field of view of an imaging device by radiation corresponding to an absorption line of the gas to be detected. The field of view of an imager is irradiated by a laser. The imager receives both backscattered laser light and background radiation. When a detectable gas is present, the backscattered laser light is highly attenuated, producing a region of contrast or shadow on the image. A flying spot imaging system is utilized to synchronously irradiate and scan the area to lower laser power requirements. The imager signal is processed to produce a video display.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 1985},
month = {Tue Jan 01 00:00:00 EST 1985}
}

Patent:

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