| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c72d118f5664072de841f9c5c34b9d99 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L2933-0091
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L33-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L2224-48257
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L2224-73265
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L2224-48091
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L2224-48247 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H05B33-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L33-502
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K11-7734
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K11-77342 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01L33-44 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K11-77
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K11-64
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01L33-50
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K11-59
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01S5-323 |
| filingDate |
1999-11-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_34e0c542d69debc486a819eebedf2a35
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6b7e606abb741eb23d3cfe8ef8c1dd2b |
| publicationDate |
2000-11-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-1051758-A1 |
| titleOfInvention |
Light emitting device with phosphor having high luminous efficacy |
| abstract |
A lamp comprises a light emitting element such as a light emitting diode or a laser diode which emits blue light, and a phosphor composition which absorbs the blue light having a first spectrum from the light emitting element and emits light having a second spectrum. The phosphor composition comprises at least one of Ba2MgSi2O7:Eu2+; Ba2SiO4:Eu2+; and (Sr,Ca,Ba)(Al,Ga)¿2?S4:Eu?2+¿. The invention also relates to a light emitting element which emits blue light, and a phosphor composition which absorbsthe blue light from the light emitting element having a first spectrum and emits light having a second spectrum, wherein the spectral luminous efficacy of light emitted by the lamp is at least 550 lumens per watt. The high spectral luminous efficacy of the output spectrum efficiently converts the power input to the lamp into lumens to provide a high brightness. For example the device luminous efficacy of the lamp can be 35-45 lumens output per watt of input electric power or more. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1259990-B1 |
| priorityDate |
1998-11-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |