Device and method for measuring luminescence
US9007579B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 4, 2009 |
| Grant date | Apr 14, 2015 |
| Priority date | — |
| Expiry date | May 7, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B21/0076
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical device for measuring luminescence includes a pulse generator for generating a periodic modulation signal having rectangular pulses, a pulse duration of the pulse being variably adjustable, an illumination device and/or means for illuminating an object under investigation with excitation radiation modulated in a pulse-like manner depending on the modulation signal, and a time-of-flight camera for phase-sensitive detection of a luminescence response emitted by the object under investigation in response to the excitation radiation. The modulation signal is supplied as reference signal to the time-of-flight camera. A method of measuring luminescence includes generating the periodic modulation signal having rectangular pulses, generating the signal-dependent, pulse-modulated excitation radiation, illuminating the object with the radiation, providing the modulation signal as reference signal to the camera, and performing phase-sensitive detection with the camera of the luminescence response emitted by the object in response to the excitation radiation for different pulse durations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.