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 = {Tue Feb 10 00:00:00 EST 1987},
month = {Tue Feb 10 00:00:00 EST 1987}
}
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