Combined optical train for laser spectroscopy

Details Combined optical train for laser spectroscopy Combined optical train for laser spectroscopy

1993-08-10

1994-03-29

Rosenberger, Richard A.

Optics: measuring and testing

By particle light scattering

With photocell detection

356342, 356343, 250237R, 250574, 359829, G01N 2100

Patent

active

052989682

ABSTRACT:
An improved method of collecting quasi-elastic light scattering (also known as QELS) data and time-average intensity simultaneously is disclosed, as is a novel apparatus therefor. The apparatus utilizes a novel optical element having a pair of diametrically aligned slits on a masking disc that eliminates the need of index matching fluids that are currently required to eliminate flare from the sample cell walls at the cell-sample and the cell-air interfaces. The novel optical element allows improved angular resolution and on-axis resolution for the fluctuation data obtained.

REFERENCES:
patent: 3310680 (1967-03-01), Hasegawa
patent: 3497704 (1970-02-01), Holmes et al.
patent: 4017186 (1977-04-01), Shofner
patent: 4027973 (1977-06-01), Kaye
patent: 4037965 (1977-07-01), Weiss
patent: 4140395 (1979-02-01), Kreikebaum
patent: 4917478 (1990-04-01), Petran et al.
patent: 5028135 (1991-07-01), Cheung

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