http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-5672585-B1
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01J61-06 |
| filingDate | 2014-06-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2015-02-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2015-02-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-5672585-B1 |
| titleOfInvention | Discharge lamp |
| abstract | In a discharge lamp in which an emitter other than thorium is added to a cathode, it is possible to prevent the emitter from being excessively evaporated from the tip of the cathode and deplete at an early stage, and to smoothly supply the emitter to the tip of the cathode. Providing such a structure. A main body portion 31 of a cathode 3 is made of a refractory metal material not containing thorium, and a tip portion 32 is made of tungsten containing an emitter (excluding thorium), and the main body portion and / or the tip portion. A sintered body 34 containing an emitter (excluding thorium) with a higher concentration than the emitter concentration at the tip is embedded in a sealed space 33 formed inside, and the grain boundary density of tungsten at the tip: The product of A (mm −1 ) and the concentration gradient of the emitter from the portion in contact with the sintered body at the tip to the tip surface: B (mol / mm 4 ) is 260 × 10 −9 (mol / mm 5 ) ≦ A × B ≦ 670 × 10 −9 (mol / mm 5 ). [Selection] Figure 2 |
| priorityDate | 2014-06-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 32.