Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1994-12-16
1996-12-31
Mullen, Thomas
Communications: electrical
Condition responsive indicating system
Specific condition
356369, G08B 1902
Patent
active
055898220
ABSTRACT:
A method and apparatus for detecting a presence of a polarization altering substance on a specular surface includes transmitting light to the surface over a transmitting path and receiving the transmitted light from the surface and from the polarization altering substance. An intensity of the light is measured in an optical non-isolator state and in an isolator state before being compared to reference data established for various specular surfaces. The reference data are preferably established by measuring an intensity of the light in both an optical non-isolator state and in an isolator state for a known surface when the polarization altering substance is absent from the known surface.
REFERENCES:
patent: 3994586 (1976-11-01), Sharkins et al.
patent: 4701052 (1987-10-01), Schoen, Jr.
patent: 5149948 (1992-09-01), Chisholm
patent: 5177346 (1993-01-01), Chisholm
patent: 5243185 (1993-09-01), Blackwood
patent: 5475370 (1995-12-01), Stern
Cornwell, Jr. et al., "Polarization-Sensitive Ice Detector for Rotary Wing Aircraft using Laser Diodes", NASA disclosure GSC13391-1, Oct. 1990.
Morrison Thomas R.
Mullen Thomas
Pastel Christopher R.
Robotic Vision Systems Inc.
LandOfFree
System for detecting ice or snow on surface which specularly ref does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System for detecting ice or snow on surface which specularly ref, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for detecting ice or snow on surface which specularly ref will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1144718