Optics: measuring and testing – By polarized light examination – Of surface reflection
Patent
1994-04-11
1996-01-09
Pham, Hoa Q.
Optics: measuring and testing
By polarized light examination
Of surface reflection
356239, 250225, 318483, G01J 400
Patent
active
054833469
ABSTRACT:
A polarization based optical sensor for detecting the presence, composition, or both of substances (26) on a transparent material's (12) surface (14). A polarized-light source (18) introduces light (22) into the material (12). Within the material (12), the light (22) undergoes one or more total internal reflections (18, 20) whether or not the substance to be detected or analyzed (26) is present. The presence of the substance causes a shift in the polarization of the light (22). This shift is detected by a polarized-light detector (20) when the light (22) exits the material (14).
REFERENCES:
patent: Re33064 (1989-09-01), Carter et al.
patent: 2359787 (1944-10-01), Peters et al.
patent: 2977842 (1961-04-01), Duke et al.
patent: 3451740 (1969-06-01), Smith
patent: 3540025 (1970-11-01), Levin et al.
patent: 3770352 (1973-11-01), White
patent: 3985447 (1976-10-01), Aspres
patent: 4221962 (1980-09-01), Black et al.
patent: 4297032 (1981-10-01), Temple
patent: 4355271 (1982-10-01), Noack
patent: 4481450 (1984-11-01), Watanabe et al.
patent: 4620141 (1986-10-01), McCumber et al.
patent: 4652745 (1987-03-01), Zanardelli
patent: 4669875 (1987-06-01), Shiba et al.
patent: 4676638 (1987-06-01), Yasuda
patent: 4924084 (1990-05-01), Lask et al.
patent: 4994682 (1991-02-01), Woodside
patent: 5015931 (1991-05-01), Muller
patent: 5059396 (1991-10-01), Opitz et al.
patent: 5094517 (1992-03-01), Franke
patent: 5185644 (1993-02-01), Schimoyama et al.
patent: 5323637 (1994-06-01), Bendicks et al.
A Highly Efficient Interconnect For Use With a Multistage Optical Switching Network With Orthogonally Polarized Data and Address Information by: Dane C. Butzer; 1994; pp. 1-5, 55-70
Disclosure Document #330165, An Optical Sensor For the Detection of Water Or Other Substances On Glass Or Other Transparent Materials, Dane Butzer 1993.
Disclosure Document #331957, An Improved Optical Sensor For the Detection of Water Or Other Substances On Glass or Other Transparent Materials, Dane Butzer, 1993.
LandOfFree
Polarization based optical sensor utilizing total internal refle does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Polarization based optical sensor utilizing total internal refle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polarization based optical sensor utilizing total internal refle will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1306291