Optics: measuring and testing – By dispersed light spectroscopy – Utilizing a spectrometer
Reexamination Certificate
2007-10-17
2010-10-12
Lauchman, L. G (Department: 2877)
Optics: measuring and testing
By dispersed light spectroscopy
Utilizing a spectrometer
C356S328000
Reexamination Certificate
active
07812949
ABSTRACT:
A spectrometer which in one embodiment including a dispersive element and a concave element. The dispersive element may be a flat or concave grating which receives light and reflects the light in different collimated wavelengths. The concave element being located downstream from the dispersive element and arranged to reflect and focus the light toward a detector. The reflected light from the concave element including astigmatism. A cylindrical lens positioned between the concave element and the detector and configured to simultaneously correct the astigmatism and demagnify the light across the detector. In one embodiment the cylindrical lens varies in thickness progressively along its length.
REFERENCES:
patent: 4983039 (1991-01-01), Harada et al.
patent: 5496993 (1996-03-01), Kasuga
patent: 5562334 (1996-10-01), Wortel
patent: 6184985 (2001-02-01), Chalmers et al.
patent: 6628383 (2003-09-01), Hilliard
patent: 6870619 (2005-03-01), Tenhunen et al.
patent: 6989898 (2006-01-01), Hopler et al.
patent: 6992843 (2006-01-01), Juhala
patent: 7102746 (2006-09-01), Zhao
patent: 7330258 (2008-02-01), Warren
patent: 7605917 (2009-10-01), Teichmann et al.
patent: 2001/0048526 (2001-12-01), Bender
patent: 2002/0001079 (2002-01-01), Paolinetti et al.
patent: 2006/0159395 (2006-07-01), Hnatiw et al.
patent: 2007014708 (2007-02-01), None
Spectrometers; OceanOptics.com, pp. 12-29 (undated, but at least as early as Sep. 2007.).
Diffraction Gratings; Jobin Yvon Horiba, HoribaGroup; www.jobinyvon.com; pp. 1-20 (undated, but at least as early as Sep. 2007.).
Monchromators & Spectrographs; Horiba Jobin Yvon; www.jobinyvon.com; Sep. 10, 2007, pp. 1-18.
Stratt, Compensation of Astigmatic Errors in a Grating Spectrograph, Journal of the Optical Society of America, vol. 43, No. 7, Jul. 1953, pp. 593-594.
Foreman, Lens Correction of Astigmatism in a Czerny-Turner Spectrograph, Applied Optics, vol. 7, No. 6, Jun. 1968, pp. 1053-1059.
European Search Report filed in EP 08305701, Nov. 11, 2009.
Baratange Francois
Delmas Remy
Brooks & Kushman P.C.
Horiba Jobin Yvon Inc.
Lauchman L. G
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