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Title: Optical humidity sensor

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:
Issue Date:
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-)

Citation Formats

Tarvin, J A. Optical humidity sensor. United States: N. p., 1987. Web.
Tarvin, J A. Optical humidity sensor. United States.
Tarvin, J A. Tue . "Optical humidity sensor". United States.
@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}
}