Fiber optic fluid detector

Patent · Fri Feb 27 04:00:00 EST 1987

OSTI ID:6746529

Angel, S M

Particular gases or liquids are detected with a fiber optic element having a cladding or coating of a material which absorbs the fluid or fluids and which exhibits a change of an optical property, such as index of refraction, light transmissiveness or fluoresence emission, for example, in response to absorption of the fluid. The fluid is sensed by directing light into the fiber optic element and detecting changes in the light, such as exit angle changes for example, that result from the changed optical property of the coating material. The fluid detector may be used for such purposes as sensing toxic or explosive gases in the atmosphere, measuring ground water contamination or monitoring fluid flows in industrial processes, among other uses. 10 figs.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• Assignee: LLNL; EDB-88-186735; ERA-14-001816
• Patent Number(s): PATENTS-US-A6019841
• OSTI ID: 6746529
• Country of Publication: United States
• Language: English

Related Subjects

440300 -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
520200* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AEROSOL MONITORING
AIR POLLUTION MONITORING
DESIGN
FIBER OPTICS
INVENTIONS
LIQUID CONTAMINATION MONITORS
MEASURING INSTRUMENTS
MONITORING
MONITORS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
RADIATION MONITORS