Optics: measuring and testing – By dispersed light spectroscopy – With raman type light scattering
Patent
1990-06-01
1991-09-17
Evans, F. L.
Optics: measuring and testing
By dispersed light spectroscopy
With raman type light scattering
356310, 356330, G01J 344, G01N 2165
Patent
active
050489593
ABSTRACT:
An imaging system for providing spectrographically resolved images. The system incorporates a one-dimensional spatial encoding mask which enables an image to be projected onto a two-dimensional image detector after spectral dispersion of the image. The dimension of the image which is lost due to spectral dispersion on the two-dimensional detector is recovered through employing a reverse transform based on presenting a multiplicity of different spatial encoding patterns to the image. The system is especially adapted for detecting Raman scattering of monochromatic light transmitted through or reflected from physical samples. Preferably, spatial encoding is achieved through the use of Hadamard mask which selectively transmits or blocks portions of the image from the sample being evaluated.
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Hadamard Transform Raman Microscopy of Laser-Modified Graphite Electrodes Apr. 23, 1990, P. J. Treado, Anurag Govil & M. Morris, Kent D. Sternitzke & Richard L. McCreery.
Morris Michael D.
Treado Patrick J.
Evans F. L.
The Regents of the University of Michigan
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