Optics: measuring and testing – By dispersed light spectroscopy – With raman type light scattering
Reexamination Certificate
2007-02-27
2007-02-27
Evans, F. L. (Department: 2877)
Optics: measuring and testing
By dispersed light spectroscopy
With raman type light scattering
Reexamination Certificate
active
10807328
ABSTRACT:
A Raman probe for measuring Raman spectrum includes an exciting-end light guiding path for guiding excitation light from a light source to a sample; a receiving light-guide path for guiding a light signal from said sample to a detector; a band-pass filter for passing said excitation light and blocking Raman-scattered light produced from said exciting-end light guiding path; a pipe for securing said band-pass filter inside said pipe, said pipe being mounted on a light-outgoing end of said exciting-end light guiding path; and an edge filter mounted on a light-incident end of said receiving light-guide path, said edge filter passing Raman-scattered light from said sample while blocking the excitation light. The edge filter is a short-wavelength transmitting filter that permits passage of wavelengths shorter than the excitation wavelength.
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patent: 6370406 (2002-04-01), Wach et al.
patent: 2003/0191398 (2003-10-01), Motz et al.
patent: 2004/0073120 (2004-04-01), Motz et al.
Aizawa Katsuo
Komachi Yuichi
Sato Hidetoshi
Tashiro Hideo
Evans F. L.
Machida Endoscope Co., Ltd.
Riken
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