WHITE LIGHT SOURCE AND WHITE LIGHT SOURCE SYSTEM USING WHITE LIGHT SOURCE

Provided is a white light source, comprising a blue light emitting LED with a peak light emitting wavelength of 421nm-490nm and a fluorescent light body layer further comprising a fluorescent light body and a resin, With the emission spectrum of the white light source designated P(λ), the emission s...

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Bibliographische Detailangaben
Hauptverfasser:	SHIRAKAWA, Yasuhiro, YAMAKAWA, Masahiko
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADHESIVES BASIC ELECTRIC ELEMENTS BLASTING CHEMISTRY DYES ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY HEATING INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21Sand F21V, RELATING TO THEFORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THELIGHT EMITTED LIGHT SOURCES NOT OTHERWISE PROVIDED FOR LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATINGELEMENTS LIGHTING MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE MECHANICAL ENGINEERING METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE NON-PORTABLE LIGHTING DEVICES PAINTS POLISHES SEMICONDUCTOR DEVICES SYSTEMS THEREOF VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS WEAPONS
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Beschreibung
Zusammenfassung:	Provided is a white light source, comprising a blue light emitting LED with a peak light emitting wavelength of 421nm-490nm and a fluorescent light body layer further comprising a fluorescent light body and a resin, With the emission spectrum of the white light source designated P(λ), the emission spectrum of the black body radiation which denotes a color temperature which is the same as that of the white light source desigiated B(λ), the spectrum of the spectral luminous efficiency designated V(λ), the wavelength at which P(λ) × V(λ) is at a maximum designated λmaxl, and the wavelength at which E(λ) × V(λ) is at a maximum designated λmax2, the relational formula -0.2≤[(P(λ) × V(λ))/P(λmaxl) × V(λmaxl))-(B(λ) × V(λ))/(B(λmax2) × V(λmax2))]≤+0.2 is satisfied, and the size of the color change between the initial lighting of a white light source which uses a CT, chromaticity diagram and after 6000 hours of consecutive lighting is less than 0.010. It is possible, with this configuration, to provide a white light source which has an equivalent emission spectrum to natural light, as well as a white light source system using the white light source.