Optics: measuring and testing – By dispersed light spectroscopy – Utilizing a spectrometer
Reexamination Certificate
2008-03-04
2008-03-04
Chowdhury, Tarifur (Department: 2886)
Optics: measuring and testing
By dispersed light spectroscopy
Utilizing a spectrometer
C356S328000
Reexamination Certificate
active
07339669
ABSTRACT:
A device for the analysis of the qualitative, optionally also the quantitative composition of gases, uses measuring light of known spectral composition that can pass through the gas to be analyzed and the gas can be caused to interact. A detector arrangement is present, which can detect light originating from the sites of the interaction between the measuring light and the gas to be analyzed. At least one refractive-diffractive optical element is provided, which is transparent over its entire surface and contributes to a wavelength-dependent imaging of the light to be detected onto the detector arrangement in a transmitting manner. The refractive-diffractive optical element is arranged in the ray path between the area in which the interaction between the gas to be analyzed and the measuring light takes place and the detector arrangement.
REFERENCES:
patent: 4678332 (1987-07-01), Rock et al.
patent: 5070245 (1991-12-01), Rantala et al.
patent: 5444528 (1995-08-01), Puschell
patent: 5479258 (1995-12-01), Hinnrichs et al.
patent: 5581405 (1996-12-01), Meyers et al.
patent: 5867264 (1999-02-01), Hinnrichs
patent: 5905571 (1999-05-01), Butler et al.
patent: 6100974 (2000-08-01), Reininger
patent: 6101034 (2000-08-01), Cox et al.
patent: 6741349 (2004-05-01), Sweatt et al.
patent: 6816258 (2004-11-01), Hutchin
patent: 6903329 (2005-06-01), Gentala
patent: 2002/0141702 (2002-10-01), Ojima et al.
patent: 2003/0043373 (2003-03-01), Russell
patent: 2003/0086091 (2003-05-01), Hinnrichs et al.
patent: 2003/0231308 (2003-12-01), Granger
patent: 2004/0070853 (2004-04-01), Ebizuka et al.
patent: 2004/0160673 (2004-08-01), Se et al.
patent: 2004/0227939 (2004-11-01), Granger
patent: 2006/0067611 (2006-03-01), Frisken et al.
patent: 2006/0181705 (2006-08-01), Cunningham et al.
patent: 44 34 814 (1996-04-01), None
patent: 196 47 632 (1997-11-01), None
patent: 103 15 864 (2004-11-01), None
W. A. Traub, “Constant-dispersion grism spectrometer for channeled spectra,” J. Opt. Soc. Am. A, vol. 7, pp. 1779-1791 (1990).
L. Weitzel et al., “3D: The next generation near-infrared imaging spectrometer”, Astron. Astrophys. Suppl. Ser. 119, pp. 531-546 (1996)□□.
Kosterev, Anatoliy A., “Chemical Sensors Based on Quantum Cascade Lasers”, IEEE Journal of Quantum Electronics, vol. 38, No. 6, Jun. 2002, pp. 582-291.
Lamprecht Axel
Matthiessen Hans
Peter Gerd
Chowdhury Tarifur
Drägerwerk Aktiengesellschaft
Hansen Jonathan M
McGlew and Tuttle , P.C.
LandOfFree
Device for the analysis of the qualitative composition of gases does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for the analysis of the qualitative composition of gases, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for the analysis of the qualitative composition of gases will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2787046