Optics: measuring and testing – By dispersed light spectroscopy – Utilizing a spectrometer
Reexamination Certificate
2007-02-20
2007-02-20
Lauchman, Layla G. (Department: 2877)
Optics: measuring and testing
By dispersed light spectroscopy
Utilizing a spectrometer
C356S328000, C359S566000, C359S569000
Reexamination Certificate
active
10616398
ABSTRACT:
Transmission spectrometers require low levels of background light so that the signal to noise ratio is increased, and also require stable performance over wide temperature ranges. Light reflected by the transmission grating can result in increased background levels. One approach to reducing the background level is to orient the transmissive diffraction grating so that light reflected by the grating is reflected out of the diffraction plane. The temperature-induced wavelength drift of a transmission spectrometer can be due to the frame upon which the transmission grating is mounted. The wavelength drift is reduced by allowing the thermal expansion of the grating to be independent of the frame.
REFERENCES:
patent: 4634624 (1987-01-01), Tajima et al.
patent: 4856172 (1989-08-01), Ahmed et al.
patent: 5042898 (1991-08-01), Morey et al.
patent: 5424827 (1995-06-01), Horwitz et al.
patent: 5559597 (1996-09-01), Battey et al.
patent: 5615010 (1997-03-01), Kraiczek et al.
patent: 6522403 (2003-02-01), Wilson et al.
patent: 6570652 (2003-05-01), Cappiello
patent: 6583934 (2003-06-01), Kramer
patent: 6765724 (2004-07-01), Kramer
patent: 6891676 (2005-05-01), Ford et al.
patent: 6954271 (2005-10-01), Curtiss
patent: 2002/0135876 (2002-09-01), Holm et al.
patent: 2002/0181128 (2002-12-01), Beattie et al.
patent: 2003/0007148 (2003-01-01), Moon et al.
patent: 2003/0067645 (2003-04-01), Ibsen et al.
patent: WO 01/95539 (2001-12-01), None
patent: WO 03/003531 (2003-01-01), None
Patent Abstracts of Japan: Publication No. 10307203 (Feb. 26, 1999), vol. 1999, No. 2, Nov. 17, 1998, 1 page.
Bastue Jens
Herholdt-Rasmussen Nicolai
Jespersen Ole
Rasmussen Michael
Altera Law Group LLC
Ibsen Photonics A/S
Lauchman Layla G.
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