Fluid sample cell comprising Fresnel sectors
Patent 4566791 Issued on January 28, 1986. Estimated Expiration Date: 
October 31, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
October 31, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorAssigneeApplicationNo. 06/547239 filed on 10/31/1983US Classes:356/246, Fluid containers (e.g., cells or cuvettes)250/573, Fluent material in optical path356/338, With photocell detection356/410, Of flowing liquids356/411With plural light detectors (e.g., photocells)ExaminersPrimary: Kittle, John E.Assistant: Shah, Mukund J. Attorney, Agent or FirmInternational ClassesG01N 21/03 (20060101)G01N 21/05 (20060101) AbstractA fluid sample cell for spectroscopic analysis of a fluid sample includes a fluid-tight compartment for the containment of a fluid sample which is defined by a radiant energy transmissive top, a side wall and a bottom. The bottom comprises a plurality of sectors and a Fresnel disc, whereby radiant energy passing through the compartment impinges upon at least one of the sectors and is specularly reflected from a reflecting surface of the sectors to respective focal points of the sectors. | |
