Optical humidity sensor
Patent
·
OSTI ID:7243577
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.
- Research Organization:
- KMS Fusion Inc
- DOE Contract Number:
- AC02-84ER80144
- Assignee:
- KMS Fusion, Inc., Ann Arbor, MI (United States)
- Patent Number(s):
- A; US 4641524
- Application Number:
- PPN: US 6-765727
- OSTI ID:
- 7243577
- Country of Publication:
- United States
- Language:
- English
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