Light scattering test apparatus

Details Light scattering test apparatus Light scattering test apparatus

1976-05-28

1977-08-23

Corbin, John K.

Optics: measuring and testing

Refraction testing

Prism engaging specimen

250574, 356246, G01N 2100

Patent

active

040436691

ABSTRACT:
An apparatus for measuring light scattered at various angles from a sample of molecules in solution, having a plurality of conical reflectors mounted on a turret assembly. The turret assembly is positioned in a temperature controlled tank. A laser beam is directed through the tank with the polymer sample being positioned within one of said reflectors in the path of the laser beam. Light scattered at a particular angle is collected and directed to a detector. The unscattered light is also directed toward the detector along a second path. A light chopper is provided to alternately supply scattered light and the unscattered light beam to the detector. The laser beam path through the sample can be reversed to provide a measure of back scattered light. Each of the conical mirrors may be selectively locked in position for positioning the polymer sample in the light path.

REFERENCES:
patent: 2858727 (1958-11-01), Stamm et al.
patent: 3508830 (1970-04-01), Hopkins et al.
patent: 3811780 (1974-05-01), Liston

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