Highly stable broadband light source and suitable...

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system

Reexamination Certificate

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C250S227180, C385S012000, C385S037000, C372S006000

Reexamination Certificate

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07119324

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.

REFERENCES:
patent: 5123070 (1992-06-01), Bradley
patent: 5945666 (1999-08-01), Kersey et al.
patent: 6018160 (2000-01-01), Bennion et al.
patent: 6246816 (2001-06-01), Moore et al.
patent: 6448551 (2002-09-01), Kersey
patent: 3148925 (1983-06-01), None
patent: 19802095 (1999-08-01), None

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