http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-1060940-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c72d118f5664072de841f9c5c34b9d99 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K11-7794 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K11-7774 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01J61-44 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K11-77 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01J61-44 |
| filingDate | 1976-06-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1979-08-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_640dddf21e76a410ce4282206adb366d |
| publicationDate | 1979-08-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-1060940-A |
| titleOfInvention | Mercury vapor lamp utilizing a combination of phosphor materials |
| abstract | ABSTRACT OF THE DISCLOSURE Color correction is provided in a high-pressure mercury vapor lamp without significant reduction in lamp lumen output. A cerium-activated yttrium aluminate phosphor material is blended with the conventional red-emitting phosphors customarily employed, such as europium-activated yttrium vanadate and europium-activated yttrium vanadate phosphate. The color-correcting phosphor additive is efficiently excited in its main absorption band at the 420-460 nm. region of the visible spectrum, thereby absorbing part of the 436 nm. Hg line, as is necessary to improve the color rendering index. The emission in the yellow-green spectrum of the phosphor additive corresponds to the maximum eye-sensitivity region, thereby contributing to the lumen output of the mercury vapor lamp coated with this phosphor blend. The class of cerium-activated yttrium aluminate phosphor additive used is identified by the general formula: (Y(1-x)Cex)3 Al5O12 with x having an approximate value in the range 0.004 to 0.020. The proportion of the phosphor additive ranges from a small but effective amount up to approximately 30 weight percent of the phosphor blend with a red-emitting phosphor. |
| priorityDate | 1975-06-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 37.