Retroreflective systems for remote readout
Abstract
A sensing device for sensing an environmental factor. The device includes a retroreflective layer disposed in a parallel, facing relationship with a sensing layer. The sensing layer has an initial optical absorption capacity for (i) sensing a presence of an environmental factor, (ii) experiencing a change in optical absorption capacity responsive to said environmental factor, and (iii) transmitting and attenuating light. A first portion of the sensing layer is sealed off from exposure to the environment while a second portion remains exposed to the environment such that, when the environmental factor is present, the first portion of the sensing layer is prevented from experiencing a change in optical absorption capacity responsive to said environmental factor. Well-collimated light beams are passed through the sensing layer and are reflected back from the retroreflective layer for processing. When the environmental factor is present, the beams which pass through the second portion are attenuated responsive to an increase in optical absorption capacity and are compared with the non-attenuated beams passing through the first portion to calculate the presence and quantity of the environmental factor.
- Inventors:
-
- Idaho Falls, ID
- Issue Date:
- Research Org.:
- Idaho National Laboratory (INL), Idaho Falls, ID (United States)
- OSTI Identifier:
- 871908
- Patent Number(s):
- 5822074
- Assignee:
- Lockheed Martin Idaho Technologies Company (Idaho Falls, ID)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01K - MEASURING TEMPERATURE
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- DOE Contract Number:
- AC07-94ID13223
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- retroreflective; systems; remote; readout; sensing; device; environmental; factor; layer; disposed; parallel; facing; relationship; initial; optical; absorption; capacity; presence; ii; experiencing; change; responsive; iii; transmitting; attenuating; light; portion; sealed; exposure; environment; remains; exposed; prevented; well-collimated; beams; passed; reflected; processing; pass; attenuated; increase; compared; non-attenuated; passing; calculate; quantity; layer disposed; collimated light; sensing layer; optical absorption; light beam; light beams; sensing device; reflective layer; sorption capacity; beams pass; facing relationship; /356/374/
Citation Formats
Deason, Vance A, Colwell, Frederick S, and Ricks, Kirk L. Retroreflective systems for remote readout. United States: N. p., 1998.
Web.
Deason, Vance A, Colwell, Frederick S, & Ricks, Kirk L. Retroreflective systems for remote readout. United States.
Deason, Vance A, Colwell, Frederick S, and Ricks, Kirk L. Thu .
"Retroreflective systems for remote readout". United States. https://www.osti.gov/servlets/purl/871908.
@article{osti_871908,
title = {Retroreflective systems for remote readout},
author = {Deason, Vance A and Colwell, Frederick S and Ricks, Kirk L},
abstractNote = {A sensing device for sensing an environmental factor. The device includes a retroreflective layer disposed in a parallel, facing relationship with a sensing layer. The sensing layer has an initial optical absorption capacity for (i) sensing a presence of an environmental factor, (ii) experiencing a change in optical absorption capacity responsive to said environmental factor, and (iii) transmitting and attenuating light. A first portion of the sensing layer is sealed off from exposure to the environment while a second portion remains exposed to the environment such that, when the environmental factor is present, the first portion of the sensing layer is prevented from experiencing a change in optical absorption capacity responsive to said environmental factor. Well-collimated light beams are passed through the sensing layer and are reflected back from the retroreflective layer for processing. When the environmental factor is present, the beams which pass through the second portion are attenuated responsive to an increase in optical absorption capacity and are compared with the non-attenuated beams passing through the first portion to calculate the presence and quantity of the environmental factor.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 1998},
month = {Thu Jan 01 00:00:00 EST 1998}
}