Fluorescence spectrometry employing excitation of bleaching intensity
US4018530A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 18, 1975 |
| Grant date | Apr 19, 1977 |
| Priority date | — |
| Expiry date | Nov 18, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/6408
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An improved system is desired for examining fluorescent material. The method comprises the steps of illuminating material with radiation at a fluorescent excitation wavelength of said material and at an intensity sufficient to cause bleaching of the material; detecting over a time interval commencing with initial illumination of the material, fluorescent emission produced by the material during bleaching of the latter by the radiation; and integrating over the interval the fluorescent emission detected during the bleaching of the material. Means are provided for illuminating the material to cause bleaching, for detecting fluorescent emission produced during bleaching, for measuring the decay time interval, and for integrating a signal from the detecting means over a time interval.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.