Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2006-10-10
2006-10-10
Pyo, Kevin (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C250S227180, C385S012000, C385S037000, C372S006000
Reexamination Certificate
active
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.
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patent: 6018160 (2000-01-01), Bennion et al.
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patent: 6448551 (2002-09-01), Kersey
patent: 3148925 (1983-06-01), None
patent: 19802095 (1999-08-01), None
Kramsky Elliott N.
LITEF GmbH
Pyo Kevin
LandOfFree
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