Method and apparatus for spectrum analysis and encoder

Details Method and apparatus for spectrum analysis and encoder Method and apparatus for spectrum analysis and encoder

2005-05-24

2005-05-24

Smith, Zandra V. (Department: 2877)

Optics: measuring and testing

By dispersed light spectroscopy

With aperture mask

C356S323000, C356S326000

Reexamination Certificate

active

06897952

ABSTRACT:
A disc serving as a spatial radiation modulator has dispersed radiation filters thereon. Each filter has a transmittance or reflectance modulation function of the form sin2(mθ+pπ/4), where m is a positive integer and p has one of the four values 0, 1, 2, 3. A radiation beam including selected wavelength components is diffracted into an elongated image dispersed according to wavelength. Different wavelength components are focused onto different filters on the modulator and are encoded by corresponding filters. Since the modulation functions of the filters are orthogonal to one another, it is possible to extract the amplitude of each wavelength component after it has been encoded or modulated by corresponding filter from the total detected signal during one measurement.

REFERENCES:
patent: 3563654 (1971-02-01), Vernande
patent: 3578980 (1971-05-01), Decker
patent: 3586442 (1971-06-01), Tripp
patent: 3636062 (1972-01-01), Girard
patent: 3640625 (1972-02-01), Ibbett
patent: 3811777 (1974-05-01), Chance
patent: 3922092 (1975-11-01), van den Bosch
patent: 4007989 (1977-02-01), Wajda
patent: 4264205 (1981-04-01), Landa
patent: 4304491 (1981-12-01), Kraushaar et al.
patent: 4448529 (1984-05-01), Krause
patent: 4450459 (1984-05-01), Turner et al.
patent: 5024508 (1991-06-01), Horner
patent: 5090807 (1992-02-01), Tai
patent: 5121239 (1992-06-01), Post
patent: 5235461 (1993-08-01), Kirsch
patent: 5325324 (1994-06-01), Rentzepis
patent: 5483335 (1996-01-01), Tobias
patent: 5485268 (1996-01-01), Tobias
patent: 5504575 (1996-04-01), Stafford
patent: 5537303 (1996-07-01), Stacy
patent: 5579105 (1996-11-01), Belton
patent: 5592327 (1997-01-01), Gabl
patent: 5691886 (1997-11-01), Stacy
patent: 5748308 (1998-05-01), Lindberg
patent: 5991460 (1999-11-01), Mitchell
patent: 6011640 (2000-01-01), Hutton
patent: 6018402 (2000-01-01), Campbell
patent: 6101034 (2000-08-01), Cox
patent: 6271917 (2001-08-01), Hagler
patent: 6388794 (2002-05-01), Hagler
patent: 20040021078 (2004-02-01), Hagler
patent: 672758 (1952-05-01), None
patent: WO 9731245 (1997-08-01), None
“Static Multislit Spectroscopy and Its Application to the Panoramic Display of Infrared Spectra,” Marcel J.E. Golay, Journal of the Optical Society of America, vol. 41, No. 7, Jul. 1951, pp. 468-472.
“Multi-Slip Spectrometry,” Marcel J.E. Golay, Journal of the Optical Society of America, vol. 39, No. 6, Jun. 1949, pp. 437-444.
“A Multiplex Grating Spectrometer”, J.F. Grainger et al., Journal de Physique, Colloque C2, supplemental au No. 3-4, Torne 28, Mars-Avril 1967, pp. C2-44-C2-52.
Search Report mailed Oct. 21, 1999.
International Search Report mailed Jan. 11, 2000.

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