The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 26, 2010
Filed:
Dec. 11, 2006
David James Squirrell, Wiltshire, GB;
Martin Alan Lee, Wiltshire, GB;
David James Squirrell, Wiltshire, GB;
Martin Alan Lee, Wiltshire, GB;
Engima Diagnostics Limited, , GB;
Abstract
In apparatus for detecting the emission of fluorescent radiation from a sample in response to excitation by two or more different radiation sources () over the same time period, each radiation source () is imprinted with a modulation regime which can then be separately detected in the emitted fluorescent radiation. For instance in techniques based on fluorescent resonant energy transfer ('FRET'), the drive current to two or more different LED sources () may be frequency modulated, or pulse width modulated, according to different modulation regimes. Responses of the sample, for instance of different donor/acceptor probes contained in the sample, to each of the sources () can then be separately detected by means of the different modulation regimes, even where the wavelengths or wavelength ranges of the responses are the same or overlapping.