Optics: measuring and testing – By light interference
Reexamination Certificate
2005-06-07
2005-06-07
Toatley, Jr., Gregory J. (Department: 2877)
Optics: measuring and testing
By light interference
Reexamination Certificate
active
06903825
ABSTRACT:
A method for analyzing a diffusing sample comprises steps of: a) illuminating the sample with temporally coherent and wavelength-modulated incident light beam; b) producing a succession of interference signals with the diffuse light; c) combining each interference signal with a reference signal (Ref(t,τ0)) generating a time port; d) extracting the continuous component of each signal characteristic of the predetermined delay (τ0) derived form c); applying a nonlinear function on each of the continuous components of the signals characterizing the predetermined delay (τ0); and f) averaging each of the images, with the non-linear function, of the continuous components of the signals characterizing the predetermined delay (τ0). The invention is useful for observing organs of the human body.
REFERENCES:
patent: 4109647 (1978-08-01), Stern et al.
patent: 4590948 (1986-05-01), Nilsson
patent: 5738101 (1998-04-01), Sappey
patent: 6181429 (2001-01-01), Barberis et al.
M. R. Hee et al., “Femtosecond Transillumination Optical Coherence Tomography”, Optics Letters, US, Optical Society of America, Washington, vol. 18, No. 12, 15 juin 1993 (Jun. 15, 1993), pp. 950-952, XP000345900, ISSN: 0146-9592 p. 950.
L. Wang et al., “Time-Resolved Fourier Spectrum and Imaging in Highly Scattering Media”, Applied Optics, US, Otical Society of America, Washington, vol. 32, No. 26, 10 Septembre 1993 (Sep. 10, 1993), pp. 5043-5048, XP000393405, ISSN: 0003-6935, p. 5043-p. 5044.
T. Zhang et al., “Multipass Michelson Interferometer With the Use of a Wavelength-Modulated Laser Diode”, Applied Optics, US, Optical Society of America, Washington, vol. 35, No. 28, 1 Octobre 1996 (Oct. 1, 1996), pp. 5650-5656, XP000629793, ISSN: 0003-6935, p. 5650; figure 2, p. 5652, colonne de droite, dernier alinea- p. 5653, colonne de gauche.
B. Chance et al., “Phase Measurement of Light Absorption and Scatter in Human Tissue”, Review of Scientific Instruments, US, American Institute of Physics. New York, vol. 69, No. 10, Octobre 1998 (Oct. 1998), pp. 3457-3481, XP000830323, ISSN: 0034-6748, p. 3474, colonne de gauche, dernier alinea, p. 3476, colonne de gauche, dernier alinea; figures 12, 13.
Lyons Michael A.
Toatley , Jr. Gregory J.
Universite Paris 13
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