Optical humidity sensor

Tarvin, J A

Title: Optical humidity sensor

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Abstract

An optical dielectric humidity sensor is disclosed 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. 2 figs.

Inventors:: Tarvin, J A

Issue Date:: 1987-02-10

Research Org.:: KMS Fusion Inc

OSTI Identifier:: 7243577

Patent Number(s):: 4641524

Application Number:: PPN: US 6-765727

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

DOE Contract Number:: AC02-84ER80144

Resource Type:: Patent

Resource Relation:: Patent File Date: 15 Aug 1985

Country of Publication:: United States

Language:: English

Subject:: 47 OTHER INSTRUMENTATION; MOISTURE GAGES; DESIGN; DIELECTRIC MATERIALS; LIGHT SOURCES; MEASURING METHODS; POROUS MATERIALS; REFRACTIVE INDEX; MATERIALS; MEASURING INSTRUMENTS; OPTICAL PROPERTIES; PHYSICAL PROPERTIES; RADIATION SOURCES; 440800* - Miscellaneous Instrumentation- (1990-)

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

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                    Tarvin, J A. Tue .  
        "Optical humidity sensor".  United States.

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@article{osti_7243577,

  title        = {Optical humidity sensor},

  author       = {Tarvin, J A},

  abstractNote = {An optical dielectric humidity sensor is disclosed 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. 2 figs.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1987},

  month        = {2}

}

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