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. |
| format | Patent |
| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_EP4332434A2</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>EP4332434A2</sourcerecordid><originalsourceid>FETCH-epo_espacenet_EP4332434A23</originalsourceid><addsrcrecordid>eNrjZPAM9_AMcVXw8XT3CFEI9g8NcnZVcPRzUcAiHBwZHOLqqxAa7OnnjkWeh4E1LTGnOJUXSnMzKLi5hjh76KYW5MenFhckJqfmpZbEuwaYGBsbmRibOBoZE6EEAOAwLMQ</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>WHITE LIGHT SOURCE AND WHITE LIGHT SOURCE SYSTEM USING WHITE LIGHT SOURCE</title><source>esp@cenet</source><creator>SHIRAKAWA, Yasuhiro ; YAMAKAWA, Masahiko</creator><creatorcontrib>SHIRAKAWA, Yasuhiro ; YAMAKAWA, Masahiko</creatorcontrib><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><language>eng ; fre ; ger</language><subject>BLASTING ; 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 ; LIGHTING ; MECHANICAL ENGINEERING ; 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=20240306&DB=EPODOC&CC=EP&NR=4332434A2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20240306&DB=EPODOC&CC=EP&NR=4332434A2$$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>BLASTING</subject><subject>HEATING</subject><subject>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</subject><subject>LIGHTING</subject><subject>MECHANICAL ENGINEERING</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2024</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZPAM9_AMcVXw8XT3CFEI9g8NcnZVcPRzUcAiHBwZHOLqqxAa7OnnjkWeh4E1LTGnOJUXSnMzKLi5hjh76KYW5MenFhckJqfmpZbEuwaYGBsbmRibOBoZE6EEAOAwLMQ</recordid><startdate>20240306</startdate><enddate>20240306</enddate><creator>SHIRAKAWA, Yasuhiro</creator><creator>YAMAKAWA, Masahiko</creator><scope>EVB</scope></search><sort><creationdate>20240306</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_EP4332434A23</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>2024</creationdate><topic>BLASTING</topic><topic>HEATING</topic><topic>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</topic><topic>LIGHTING</topic><topic>MECHANICAL ENGINEERING</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>2024-03-06</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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| language | eng ; fre ; ger |
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| subjects | BLASTING 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 LIGHTING MECHANICAL ENGINEERING WEAPONS |
| title | WHITE LIGHT SOURCE AND WHITE LIGHT SOURCE SYSTEM USING WHITE LIGHT SOURCE |
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