Optical detector cell

US4681443A · kind A · utility

Assignee

• E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

• David T. Bach · Westborough, US
• Roger A. Gruenke · Overland Park, US
• Herman W. Levin · Philadelphia, US

Key dates

• Filing date: May 8, 1985
• Grant date: Jul 21, 1987
• Expiry date: May 8, 2005

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2201/0696
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An optical cell provides a measuring chamber which is L-shaped with an absorbance optical path lying along the horizontal leg of the L. A second optical path is provided transverse to the absorbance path and sized to permit the passage of radiation into the entire L-shaped chamber. The exit slit for the cell receives radiation from the entire vertical leg of the L and may serve as the entrance slit to a photometer.