Optics: measuring and testing – By polarized light examination – With light attenuation
Patent
1998-06-15
1999-11-16
Font, Frank G.
Optics: measuring and testing
By polarized light examination
With light attenuation
356403, G01B 1124
Patent
active
059867620
ABSTRACT:
A method and apparatus for optically assaying a targeted substance in a sample using a sensor having an optimized groove profile. The optical sensor has a grooved surface defined by a first sinusoidal component superposed with one or more additional sinusoidal components such that a reflectance anomaly occurs at multiple resonance angles. A measure of the targeted substance in the sample can more precisely calculated as a function of a change in angular distance between the resonance angles. Advantages of the present invention include increased sensitivity and less susceptibility to system drifts due to mechanical motion and thermal changes than conventional diffraction grating sensors.
REFERENCES:
patent: 4828387 (1989-05-01), Sawyers et al.
patent: 4877747 (1989-10-01), Stewart
patent: 4882288 (1989-11-01), North et al.
patent: 4931384 (1990-06-01), Layton et al.
patent: 4992385 (1991-02-01), Godfrey
patent: 5035863 (1991-07-01), Finlan et al.
patent: 5071248 (1991-12-01), Tiefenthaler
patent: 5118608 (1992-06-01), Layton et al.
patent: 5310686 (1994-05-01), Sawyers et al.
patent: 5322798 (1994-06-01), Sadowski
patent: 5442448 (1995-08-01), Knoll
patent: 5455178 (1995-10-01), Fattinger
patent: 5478755 (1995-12-01), Attridge et al.
patent: 5492840 (1996-02-01), Malmqvist et al.
patent: 5583643 (1996-12-01), Gass et al.
patent: 5598267 (1997-01-01), Sambles et al.
patent: 5636633 (1997-06-01), Messerschmidt et al.
patent: 5751482 (1998-05-01), Challener, IV
patent: 5776785 (1998-07-01), Lin et al.
"Unusual splitting behavior of the dispersion of surface polaritons in grating of different symmetry, amplitude, and profile", Applied Optics, B. Fischer, vol. 34, No. 25, Sep. 1, 1995, pp. 5773-5779.
"A Compact Surface Plasmon Resonance Sensor for Measurement of Water in Process", Applied Spectroscopy, R. Matsubara, vol. 42, No. 8, 1988, pp. 1375-1379.
"Detection of Immuno-complex Formation via Surface Plasmon Resonance on Gold-Coated Difraction Gratings", Biosensors, 3, 1987/88, D. C. Cullen, pp. 211-225.
"Grating-Coupled Surface Plasmon for Measuring the Refractive Index of a Liquid Sample", J. Phys. D: Applied Physics, Hiroshi Kano, vol. 34, 1995, pp. 331-335.
"Polarisation Conversion Through the Excitation of Surface Plasmons on a Metallic Grating", Journal of Modern Optics, G. P. Bryan-Brown, 1990, vol. 37, No. 7, pp. 1227-1232.
"Resonance Anomalies in the Light Intensity Reflected at Silver Gratings with Dielectric Coatings", J. Phys. D: Applied Physics, I. Pockrand, vol. 9, 1976, pp. 2423-2432.
"Surface-Resonance Polarization Conversion Mediated By Broken Surface Symmetry", The American Physical Society, Physical Review B, S. J. Elston, vol. 44, No. 7, Aug. 15, 1991-I, pp. 3483-3485.
"Gas Detection By Means of Surface Plasmon Resonance", Sensors and Actuators, Claes Nylander, vol. 3, 1982-83, pp. 79-88.
"A Direct Surface Plasmon--Polariton Immunosensor: Preliminary Investigation of the Non-specific Adsorption of Serum Components to the Sensor Interface", Sensors and Actuators, D. C. Cullen, B1, 1990, pp. 576-579.
"Surface Plasmon Resonance on Gratings as a Novel Means for Gas Sensing", Sensor and Actuators, P. S. Vukusic, B, 8, 1992, pp. 155-160.
"Development of a Prototype Gas Sensor Using Surface Plasmon Resonance on Gratings", Sensors and Actuators, M. J. Jory, B, 17, 1994, pp. 203-209.
"Double Excitation of a Resonant Surface Plasmon Maximum", Journal of Modern Optics, M.J. Jory, 1993, vol. 40, No. 9, pp. 1657-1662.
"Optimization of a Chemooptical Surface Plasmon Resonance Based Sensor", Applied Optics, Jos van Gent, vol. 29, No. 19, Jul. 1, 1990, pp. 2843-2849.
"Choice of Metal and Wavelength for Surface-Plasmon Resonance Sensors: Some Considerations", Applied Optics, Helene E. de Bruijn, vol. 31, No. 4, Feb. 1992.
"Detection of Amine Gases by Color Changes of Acid-Base Indicators Supported on Inorganic Films", Reports of the Faculty of Engineering Nagasaki University, Yuji Takao, vol. 26, No. 46, Jan. 1996, pp. 105-111.
"Properties and Applications of Layered Grating Resonances", SPIE, Application and Theory of Periodic Structures, Diffraction Gratings, and More Phenomena III, G. Gallatin, vol. 815, 1987, pp. 158-167.
"Vector Diffraction of a Grating with Conformal Thin Films", Optical Society of America, W. A. Challener, vol. 13, No. 9, Sep. 1996, pp. 1859-1869.
Handbook of Biosensors and Electronic Noses: Medicine, Food and the Environment, Chapters 7, 16 & 24-27.
Indicators, Chapter 1, History of Indictors.
Font Frank G.
Imation Corp.
Levinson Eric D.
Nguyen Tu
LandOfFree
Optical sensor having optimized surface profile does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical sensor having optimized surface profile, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical sensor having optimized surface profile will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1331262