Optics: measuring and testing – By particle light scattering
Reexamination Certificate
2005-07-29
2008-03-04
Punnoose, Roy M. (Department: 2886)
Optics: measuring and testing
By particle light scattering
C356S342000
Reexamination Certificate
active
07339670
ABSTRACT:
A remote sensing optical system and method is disclosed that permits detection and discrimination of aerosols. The system outputs a plurality of wavelengths and is equipped with a polarization sensitive receiver capable of measuring the scattered energy in two orthogonal polarization states. By normalizing the depolarization to the total energy received and calculating the ratio of normalized depolarization at different wavelengths it is possible to use this ratio to discriminate materials having wavelength dependent depolarization properties. One use is the discrimination of bioaerosols such as anthrax from other airborne particular matter.
REFERENCES:
patent: 6639674 (2003-10-01), Sokolov et al.
J.H. Marquardt et al., “Measurement Of Bio-Aerosols With A Polarization-Sensitive, Coherent Doppler Lidar”, 5th Joint Conference On Standoff Detection For Chemical And Biological Defense, Williamsburg, VA Sep. 24-28, 2001.
Theriault et al., “Passive Standoff Detection Of BG Aerosol: Method And Filed Trial Results”, Process of SPIE, p. 163, vol. 5268, 2004.
Hecht, Wesley, Optics, 1998, 3rd ed., pp. 67, 340-342.
Grant, “Lidar For Atmospheric And Hydrospheric Studies”, Tunable Laser Applications, F.J. Duarte ed., Marcel Dekker 1995.
Gurton, Ligon et al., “Measured Infrared Spectral Extinction For AerosolizedBaccillus subtilisvar. Niger Endospores From 4 to 13 um”, Applied Optics, 40(25), 2001.
Zakel et al., “High-Brightness Rapidly-Tunable Cr:AnSe Laser”, 20th Anniversary Meeting Advanced Solid-State Photonics, Feb. 6-9, 2005, Vienna.
Carrig Timothy J.
Grund Christian
Marquardt John
Lockheed Martin Coherent Technologies, Inc.
Punnoose Roy M.
LandOfFree
Wavelength normalized depolarization ratio lidar does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Wavelength normalized depolarization ratio lidar, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wavelength normalized depolarization ratio lidar will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3967961