Optical humidity sensor

Tarvin, Jeffrey A

Title: Optical humidity sensor

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Abstract

An optical dielectric humidity sensor which includes a dielectric mirror having multiple alternating layers of two porous water-adsorbent dielectric materials with differing indices of refraction carried by a translucent substrate. A narrow-band polarized light source is positioned to direct light energy onto the mirror, and detectors are positioned to receive light energy transmitted through and reflected by the mirror. A ratiometer indicates humidity in the atmosphere which surrounds the dielectric mirror as a function of a ratio of light energies incident on the detectors.

Inventors:

Tarvin, Jeffrey A ^[1]

Ann Arbor, MI

Issue Date:: 1987-01-01

Research Org.:: KMS Fusion Inc

OSTI Identifier:: 866135

Patent Number(s):: 4641524

Assignee:: KMS Fusion, Inc. (Ann Arbor, MI)

Patent Classifications (CPCs):: G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES

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G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N21/81 - Indicating humidity
G01N21/21 - Polarisation-affecting properties

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DOE Contract Number:: AC02-84ER80144

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: optical; humidity; sensor; dielectric; mirror; multiple; alternating; layers; porous; water-adsorbent; materials; differing; indices; refraction; carried; translucent; substrate; narrow-band; polarized; light; source; positioned; direct; energy; detectors; receive; transmitted; reflected; ratiometer; indicates; atmosphere; surrounds; function; ratio; energies; incident; light energy; dielectric materials; polarized light; alternating layers; light source; dielectric material; receive light; energy transmitted; optical dielectric; dielectric mirror; humidity sensor; /73/

Citation Formats


                    Tarvin, Jeffrey A. Optical humidity sensor.  United States: N. p., 1987. 
        Web.

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                    Tarvin, Jeffrey A. Optical humidity sensor.  United States.

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                    Tarvin, Jeffrey A. Thu .  
        "Optical humidity sensor".  United States.  https://www.osti.gov/servlets/purl/866135.

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@article{osti_866135,

  title        = {Optical humidity sensor},

  author       = {Tarvin, Jeffrey A},

  abstractNote = {An optical dielectric humidity sensor which includes a dielectric mirror having multiple alternating layers of two porous water-adsorbent dielectric materials with differing indices of refraction carried by a translucent substrate. A narrow-band polarized light source is positioned to direct light energy onto the mirror, and detectors are positioned to receive light energy transmitted through and reflected by the mirror. A ratiometer indicates humidity in the atmosphere which surrounds the dielectric mirror as a function of a ratio of light energies incident on the detectors.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1987},

  month        = {1}

}

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