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 spec-trum of the white light source designated P(λ), the emission...
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| creator | SHIRAKAWA Yasuhiro YAMAKAWA Masahiko |
| description | 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 spec-trum 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 designated 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 λmax1, and the wavelength at which B(λ) × V(λ) is at a maximum designated λm2, the relational formula -0,2≤[(P(λ) × V(λ))/(P(λmax1) × V(λmax1))·(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 CIE 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. |
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With the emission spec-trum 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 designated 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 λmax1, and the wavelength at which B(λ) × V(λ) is at a maximum designated λm2, the relational formula -0,2≤[(P(λ) × V(λ))/(P(λmax1) × V(λmax1))·(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 CIE 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.</description><language>eng ; slv</language><subject>ADHESIVES ; BASIC ELECTRIC ELEMENTS ; BLASTING ; CHEMISTRY ; DYES ; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ; ELECTRICITY ; HEATING ; 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</subject><creationdate>2024</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20240430&DB=EPODOC&CC=SI&NR=4044264T1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20240430&DB=EPODOC&CC=SI&NR=4044264T1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>SHIRAKAWA Yasuhiro</creatorcontrib><creatorcontrib>YAMAKAWA Masahiko</creatorcontrib><title>WHITE LIGHT SOURCE AND WHITE LIGHT SOURCE SYSTEM USING WHITE LIGHT SOURCE</title><description>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 spec-trum 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 designated 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 λmax1, and the wavelength at which B(λ) × V(λ) is at a maximum designated λm2, the relational formula -0,2≤[(P(λ) × V(λ))/(P(λmax1) × V(λmax1))·(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 CIE 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.</description><subject>ADHESIVES</subject><subject>BASIC ELECTRIC ELEMENTS</subject><subject>BLASTING</subject><subject>CHEMISTRY</subject><subject>DYES</subject><subject>ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR</subject><subject>ELECTRICITY</subject><subject>HEATING</subject><subject>LIGHT SOURCES NOT OTHERWISE PROVIDED FOR</subject><subject>LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL</subject><subject>LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE</subject><subject>LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATINGELEMENTS</subject><subject>LIGHTING</subject><subject>MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE</subject><subject>MECHANICAL ENGINEERING</subject><subject>METALLURGY</subject><subject>MISCELLANEOUS APPLICATIONS OF MATERIALS</subject><subject>MISCELLANEOUS COMPOSITIONS</subject><subject>NATURAL RESINS</subject><subject>NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE</subject><subject>NON-PORTABLE LIGHTING DEVICES</subject><subject>PAINTS</subject><subject>POLISHES</subject><subject>SEMICONDUCTOR DEVICES</subject><subject>SYSTEMS THEREOF</subject><subject>VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2024</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZPAM9_AMcVXw8XT3CFEI9g8NcnZVcPRzUcAiHBwZHOLqqxAa7OnnjkWeh4E1LTGnOJUXSnMzKLq5hjh76KYW5MenFhckJqfmpZbEB3uaGJiYGJmZhIQYGhOjBgBCDS2i</recordid><startdate>20240430</startdate><enddate>20240430</enddate><creator>SHIRAKAWA Yasuhiro</creator><creator>YAMAKAWA Masahiko</creator><scope>EVB</scope></search><sort><creationdate>20240430</creationdate><title>WHITE LIGHT SOURCE AND WHITE LIGHT SOURCE SYSTEM USING WHITE LIGHT SOURCE</title><author>SHIRAKAWA Yasuhiro ; YAMAKAWA Masahiko</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_SI4044264TT13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; slv</language><creationdate>2024</creationdate><topic>ADHESIVES</topic><topic>BASIC ELECTRIC ELEMENTS</topic><topic>BLASTING</topic><topic>CHEMISTRY</topic><topic>DYES</topic><topic>ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR</topic><topic>ELECTRICITY</topic><topic>HEATING</topic><topic>LIGHT SOURCES NOT OTHERWISE PROVIDED FOR</topic><topic>LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL</topic><topic>LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE</topic><topic>LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATINGELEMENTS</topic><topic>LIGHTING</topic><topic>MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE</topic><topic>MECHANICAL ENGINEERING</topic><topic>METALLURGY</topic><topic>MISCELLANEOUS APPLICATIONS OF MATERIALS</topic><topic>MISCELLANEOUS COMPOSITIONS</topic><topic>NATURAL RESINS</topic><topic>NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE</topic><topic>NON-PORTABLE LIGHTING DEVICES</topic><topic>PAINTS</topic><topic>POLISHES</topic><topic>SEMICONDUCTOR DEVICES</topic><topic>SYSTEMS THEREOF</topic><topic>VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>SHIRAKAWA Yasuhiro</creatorcontrib><creatorcontrib>YAMAKAWA Masahiko</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>SHIRAKAWA Yasuhiro</au><au>YAMAKAWA Masahiko</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>WHITE LIGHT SOURCE AND WHITE LIGHT SOURCE SYSTEM USING WHITE LIGHT SOURCE</title><date>2024-04-30</date><risdate>2024</risdate><abstract>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 spec-trum 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 designated 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 λmax1, and the wavelength at which B(λ) × V(λ) is at a maximum designated λm2, the relational formula -0,2≤[(P(λ) × V(λ))/(P(λmax1) × V(λmax1))·(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 CIE 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.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ADHESIVES BASIC ELECTRIC ELEMENTS BLASTING CHEMISTRY DYES ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY HEATING 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 |
| title | WHITE LIGHT SOURCE AND WHITE LIGHT SOURCE SYSTEM USING WHITE LIGHT SOURCE |
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