Fluorescence emissions detector
US9052287B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 19, 2013 |
| Grant date | Jun 9, 2015 |
| Priority date | — |
| Expiry date | Jun 19, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A light source is gated ON and OFF in response to a pulsed signal. Photo emissions from the light source are coupled to a material under test. Resonant fluorescent emissions from the material are coupled to a photodiode. Current from the photodiode is coupled into an amplifier system comprising a first and second amplifier stages. The first amplifier stage is gated to a low gain when the light source is turned ON and the gain is increased when the light source goes from ON to OFF. The second amplifier stage has digitally programmable offset and gain settings in response to control signals. The output of the second amplifier stage is digitized by an analog to digital converter. A controller generates the pulse control signal and the control signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.