Light absorption cell combining variable path and length pump

Details Light absorption cell combining variable path and length pump Light absorption cell combining variable path and length pump

1992-02-28

1993-12-07

Rosenberger, Richard A.

Optics: measuring and testing

Sample, specimen, or standard holder or support

Fluid containers

250576, 356440, G01N 2105, G01N 2185

Patent

active

052687368

ABSTRACT:
A device for use in making spectrophotometric measurements of fluid samples. In particular, the device is a measurement cell containing a movable and a fixed lens with a sample of the fluid therebetween and through which light shines. The cell is connected to a source of light and a spectrophotometer via optic fibers. Movement of the lens varies the path length and also pumps the fluid into and out of the cell. Unidirectional inlet and exit valves cooperate with the movable lens to assure a one-way flow of fluid through the cell. A linear stepper motor controls the movement of the lens and cycles it from a first position closer to the fixed lens and a second position farther from the fixed lens, preferably at least 10 times per minute for a nearly continuous stream of absorption spectrum data.

REFERENCES:
patent: 3142719 (1964-07-01), Farr
patent: 3448277 (1969-06-01), Jayko
patent: 3740156 (1973-06-01), Heigl et al.
patent: 3810695 (1974-05-01), Shea
patent: 3843269 (1974-10-01), Hohberg
patent: 4019372 (1977-04-01), Parkell et al.
patent: 4111560 (1978-09-01), Jolanki et al.
patent: 4451152 (1984-05-01), Topol et al.
patent: 4488814 (1984-12-01), Johnson
patent: 4786171 (1988-11-01), LeFebre et al.
patent: 4950610 (1990-08-01), Tittle
patent: 5039224 (1991-08-01), O'Rourke et al.
patent: 5146294 (1992-09-01), Grisar et al.

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