Predicate |
Object |
assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d72339a6b893476ba374b394b9685349 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_fdad00677b9268c26e005a9e03a7b9dd |
classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02B20-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F21K9-232 |
classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K11-77348 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K11-7738 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L33-50 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L33-504 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K11-7734 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K11-77342 |
classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01L33-50 |
filingDate |
2012-10-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_13c29755b768aa03081dcc53d26408dc http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_298d1bbf5ccd4ef225fb30dd60917f41 |
publicationDate |
2014-09-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
publicationNumber |
US-2014284636-A1 |
titleOfInvention |
White light source and white light source system including the same |
abstract |
The present invention provides a white light source comprising: a light emitting diode (LED) having a light emission peak wavelength in a range of 350 or more and 420 nm or less; and a phosphor layer including four or more types of phosphors and resin, wherein the white light source satisfies a relational equation of: −0.2≦[(P(λ)×V(λ))/(P(λmax1)×V(λmax1))−(B(λ)×V(λ))/(B(λmax2)×V(λmax2))]≦+0.2, assuming that: a light emission spectrum of the white light source is P(λ); a light emission spectrum of black-body radiation having a same color temperature as that of the white light source is B(λ); a spectrum of a spectral luminous efficiency is V(λ); a wavelength at which P(λ)×V(λ) becomes largest is λmax1; and a wavelength at which B(λ)×V(λ) becomes largest is λmax2, and wherein an amount (difference) of chromaticity change on CIE chromaticity diagram from a time of initial lighting up of the white light source to a time after the white light source is continuously lighted up for 6000 hours is less than 0.010. According to the above white light source, there can be provided a white light source capable of reproducing the same light emission spectrum as that of natural light. |
isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9318668-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110959201-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10378709-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10337697-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2017238390-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2015014725-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10420183-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11721675-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10674577-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-3367448-A4 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11430771-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10231305-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10375786-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11094679-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10473274-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-3648183-A4 |
priorityDate |
2011-10-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
type |
http://data.epo.org/linked-data/def/patent/Publication |