A VARIABLE OPTICAL FILTER AND A WAVELENGTH-SELECTIVE SENSOR BASED THEREON

An optical filter is described having a laterally variable transmission wavelength within a wavelength range, the optical filter comprising:a bandpass filter comprising a stack of alternating first and second layers comprising first and second materials, respectively;a blocking filter comprising a s...

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Bibliographische Detailangaben
Hauptverfasser:	HENDRIX, Karen, Denise, BRADLEY, Richard, A, KUNA, Jeffrey, James, HULSE, Charles, A
Format:	Patent
Sprache:	eng ; fre ; ger
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 OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS RADIATION PYROMETRY SEMICONDUCTOR DEVICES TESTING
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Beschreibung
Zusammenfassung:	An optical filter is described having a laterally variable transmission wavelength within a wavelength range, the optical filter comprising:a bandpass filter comprising a stack of alternating first and second layers comprising first and second materials, respectively;a blocking filter comprising a stack of alternating third and fourth layers, comprising third and fourth materials, respectively;wherein the first, second and fourth materials each comprise different materials, so that a refractive index of the first material is smaller than a refractive index of the second material, the refractive index of the second material is smaller than a refractive index of the fourth material, and an absorption coefficient of the second material is smaller than an absorption coefficient of the fourth material.