Optics: measuring and testing – By dispersed light spectroscopy – With raman type light scattering
Patent
1992-10-09
1994-12-06
Evans, F. L.
Optics: measuring and testing
By dispersed light spectroscopy
With raman type light scattering
356318, 356328, 356334, 2504581, G01N 2164, G01N 2165
Patent
active
053715861
ABSTRACT:
A light analysis system is disclosed and comprises a source of substantially collimated light to be analyzed. The source comprises a sample excited by a collimated laser light source, and further comprises a holographic notch filter having the characteristic of reflecting light at the excitation wavelenghth at which the source is excited. An aberration corrected concave focusing diffraction grating receives the collimated light and focuses it at a point corresponding to its wavelength. A detector detects light at a desired wavelength focused by the diffraction grating. The holographic notch filter is positioned to filter the source of substantially collimated light to be filtered and the holographic notch filter is oriented substantially at an angle with respect to the collimated laser light source to result in a path length for the collimated laser light source which constrains a path length through the notch filter which causes the collimated laser light to be reflected by the filter away from the grating. The grating is an aberration corrected concave focusing diffraction grating. The collimated light is in the form of a bundle having a width on the order of ten millimeters.
REFERENCES:
patent: Re32735 (1988-08-01), Clay et al.
patent: 4351611 (1982-09-01), Leif
patent: 5048960 (1991-09-01), Hayashi et al.
Evans F. L.
Instruments SA, Inc.
LandOfFree
Low aberration diffraction grating system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Low aberration diffraction grating system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low aberration diffraction grating system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-218280