METHODS FOR WAVELENGTH DETERMINATION OF MONOCHROMATIC LIGHT BEAMS

Methods for wavelength determination of a monochromatic beam are described. The methods involve a detector unit containing at least one variable filter and at least one pair of photo detectors. The detectors have photo sensitive regions with their areas varying with the position in one direction. Th...

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Bibliographische Detailangaben
Hauptverfasser:	SHIH, ISHIANG, PHONG, LINH N, QIU, CINDY X, LAOU, PHILIP
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BASIC ELECTRIC ELEMENTS COLORIMETRY ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT MEASURING PHYSICS RADIATION PYROMETRY SEMICONDUCTOR DEVICES TESTING
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Beschreibung
Zusammenfassung:	Methods for wavelength determination of a monochromatic beam are described. The methods involve a detector unit containing at least one variable filter and at least one pair of photo detectors. The detectors have photo sensitive regions with their areas varying with the position in one direction. The wavelength for maximum transmission of the variable filter varies in the same direction. By comparing the photo current values from the two detectors, wavelength of the incident beam is determined. Methods to construct wavelength discrimination junction photo detector pair and double barrier photo detector pair are also given.