Highly stable broadband light source and suitable stabilization method therefor
US7119324B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 19, 2004 |
| Grant date | Oct 10, 2006 |
| Priority date | — |
| Expiry date | Feb 19, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C19/721
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A highly stable broadband light source includes a semiconductor light source having a specific emission spectrum, an optical filter having a specific bandpass filtering function and a predetermined bandwidth and a coupling element, to which the light emissions of the semiconductor light source and of the optical filter are fed. The light emission of the broadband light source occurs at the output of the coupling element. The spectrum of the light emission of the broadband light source is composed of the emission spectrum of the semiconductor light source and the bandpass filtering function of the optical filter. The wavelength of the optical filter is temperature-stabilized so that the spectrum of light emission of the broadband light source is essentially determined solely by the filtering function of the optical filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.