Patent · US Active

Multiplexed excitation emission matrix spectroscopy

US10481092B2 · kind B2 · utility

2Cited by

6References

23Claims

0Family size

Assignee

Queen's University at Kingston · CA

Inventors

Hans-Peter Loock · Kingston, CA
Oliver Reich · Weil am Rhein, DE
Nicholas L. P. Andrews · Kingston, CA

Key dates

Filing date	Jul 21, 2016
Grant date	Nov 19, 2019
Priority date	—
Expiry date	Jul 31, 2036

Classification

Technology area (CPC G)Physics
CPC primaryG02B6/3624
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Described herein is an excitation emission matrix (EEM) spectrometer and method, comprising a multiplexer that encodes excitation light produced by at least one excitation light source; and a demultiplexer that decodes encoded light emitted from a sample, and produces an output indicative of a characteristic of the sample. Embodiments are described wherein the multiplexer and the demultiplexer may comprise FDM or OFDM, and wherein both the excitation light and the emitted light may be encoded using a DMA or a SLM. In some embodiments the same DMA or SLM may be used to encode the excitation light and the emitted light. In some embodiments excitation light may be encoded using a Walsh function, or the excitation light may be encoded using a Walsh function and the emitted light may be decoded using an inverse Hadamard transformation.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.