Optical sky-sun diffuser

An embodiment of a solid optical sky-sun diffuser, which comprises a transparent solid matrix embedding a dispersion of transparent nanoparticles having an average size d in the range 10 nm@d@240 nm; wherein: the ratio between the blue and red scattering optical densities gamma=Log [T(450 nm)]/Log [...

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Bibliographische Detailangaben
Hauptverfasser:	PIGAZZINI MARTA CECILIA, AVERCHI ALESSANDRO, DI TRAPANI PAOLO
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS BLASTING ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF HEATING LIGHTING MECHANICAL ENGINEERING OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS SEMICONDUCTOR DEVICES STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR WEAPONS
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Beschreibung
Zusammenfassung:	An embodiment of a solid optical sky-sun diffuser, which comprises a transparent solid matrix embedding a dispersion of transparent nanoparticles having an average size d in the range 10 nm@d@240 nm; wherein: the ratio between the blue and red scattering optical densities gamma=Log [T(450 nm)]/Log [T(630 nm)] of said diffuser falls in the range 5>=gamma>=2.5, where T(lambda) is the Monochromatic Normalized Collinear Transmittance; in at least one propagation direction, said Monochromatic Normalized Collinear Transmittance is T(450 nm)>=0.4; in at least one propagation direction said Monochromatic Normalized Collinear Transmittance is T(450 nm)@0.9, said propagation direction being the same or different from that at which said Monochromatic Normalized Collinear Transmittance is T(450 nm)>=0.4.