Light emitting diode based measurement systems
US7692773B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 21, 2004 |
| Grant date | Apr 6, 2010 |
| Priority date | — |
| Expiry date | Nov 23, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N15/1434
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Various light emitting diode (LED) based measurement systems and methods are provided. One system includes one or more arrays of LEDs arranged along a flow path of a sample. The array(s) are configured to illuminate the sample as the sample moves along the flow path. The system also includes one or more detectors configured to detect light resulting from illumination of the sample by the array(s). One method includes illuminating a microsphere at different positions along a flow path of the microsphere. The method also includes detecting light resulting from the illumination to produce individual output signals corresponding to the illumination at the different positions. The method further includes combining the individual output signals to produce a single output signal having a signal-to-noise ratio that is greater than a signal-to-noise ratio of the individual output signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.