Light scattering and spectroscopic detector

Details Light scattering and spectroscopic detector Light scattering and spectroscopic detector

1988-11-04

1991-01-08

Willis, Davis L.

Optics: measuring and testing

By particle light scattering

With photocell detection

356339, 356342, G01N 2149

Patent

active

049830406

ABSTRACT:
A laser light scattering and spectroscopic detector is provided which includes a probe comprising an optical fiber coupled to a graded index microlens. The angular aperture and the divergence of the probe are designed specifically to satisfy the scattering volume and coherence requirements for laser light scattering and spectroscopic measurements. The detector includes a housing which defines an elongate cell therein and a selected number of detector ports extending at various angles with respect to the cell. A method is provided for detecting scattered light which includes the steps of positioning the probe inside or outside the scattering medium at a selected angle with respect to the laser beam.

REFERENCES:
patent: 3518437 (1970-06-01), Riggs
patent: 4471659 (1984-09-01), Udd et al.
patent: 4643573 (1987-02-01), McLachlan et al.
Proposal leading to Grant #431-5010D--State University of New York transmittal for applications submitted to sponsor by the campus--F 105-777.
Dynamic Light Scattering Using Monomode Optical Fibers, (Brown), Nov. 15, 1987.
Monomode Fiber Component For Dynamic Light Scattering, (Brown et al.), Dec. 1987.

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