UV scanning system for centrifuge

Details UV scanning system for centrifuge UV scanning system for centrifuge

1987-10-29

1989-05-16

Evans, F. L.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

250373, 356334, 356427, G01J 324, G01J 342

Patent

active

048304930

ABSTRACT:
A centrifuge sample is optically scanned during centrifuging. The sample, placed in a centrifuge rotor having a cell with top and bottom windows, is spun until stratification and discrete layering occurs within the sample. Such layering occurs on layers that are precisely normal to the radius of the centrifuge at the point of sample and parallel to the spin axis of the centrifuge. A slit scanner having a slit normal to the sample plane transverse the width of the sample below the cell to detect with precision the precise location of the strata in the cell. A light source is reflected by a toroidal mirror having two radius of curvature. One radius of curvature is selected to collimate rays of light parallel to the layer of the sample. The mirror is ruled with respect to the other radius of curvature to chromatically classify light to preselect band width. Rotation of the mirror preserved collimation but enables selected scanning light frequency.

REFERENCES:
patent: 3628849 (1976-12-01), Flamand
patent: 3652860 (1972-03-01), Walker
patent: 3721487 (1973-03-01), Pieuchard et al.
patent: 3807874 (1974-04-01), Gropper
patent: 3909134 (1975-09-01), Pieuchard et al.
patent: 3930728 (1976-01-01), Pieuchard et al.
patent: 3942048 (1976-03-01), Laude et al.

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