Multiple-path gas-absorption cell

Details Multiple-path gas-absorption cell Multiple-path gas-absorption cell

1992-02-11

1993-06-15

Turner, Samuel A.

Optics: measuring and testing

Sample, specimen, or standard holder or support

Fluid containers

356440, G01N 110

Patent

active

052204022

ABSTRACT:
A gas-absorption cell for use with spectrophotometric equipment having a generally circular housing or body formed with inlet and outlet openings for the passage therethrough of predetermined types of energy, there being an optical lens in the inlet opening for directing incoming energy to a highly reflective annular surface within the body whereby energy is permitted to reflect back and forth across the interior of the body, thereby making a plurality of different paths through a gas sample before it is caused to leave the cell through the output opening therein. Such cell configuration can be substantially coplanar or it can be in the form of a sphere; in either case, the plurality of paths through the gas includes substantially all of the interior of the cell. Also, two or more substantially coplanar cells can be arranged in juxtaposition with the energy being transferred from one cell to another by suitably positioned reflectors.

REFERENCES:
patent: 4322621 (1982-03-01), Aagaro
patent: 4421408 (1983-12-01), Davis et al.
patent: 4730112 (1988-03-01), Wong
patent: 4749276 (1988-06-01), Bragg et al.
Long Optical Paths of Large Aperture, White, J.O.S.A., May 1942, pp. 285-288.

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