http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2018016990-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_055cc5f17f2820eda18707520299001d |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01J31-50 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01J2201-3423 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01J31-26 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01J40-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01J31-50 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01J43-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01J1-34 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01J40-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01J43-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01J31-50 |
| filingDate | 2017-06-14^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_677c89c9bb447beae682f492ed464219 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_01c9e95c305687154ed756d11a03c808 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d92896b2c3fbb49032c47365cc90bf42 |
| publicationDate | 2018-01-25^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | WO-2018016990-A1 |
| titleOfInvention | Photocathode assembly for a vacuum photoelectric device with a semi-transparent photocathode |
| abstract | The invention relates to photocathode assemblies for vacuum photoelectric devices operating in the ultraviolet spectrum and containing a photocathode based on gallium nitride compounds, and can be used in direct-conversion image intensifiers, photomultipliers and microchannel intensified position-sensitive detectors, manufactured by means of the separate processing of photocathode and housing parts. In a photocathode assembly for a vacuum photoelectric device with a semi-transparent photocathode, layers of a heteroepxitaxial gallium nitride compound structure are grown as a semi-transparent photocathode on the inside surface of an inlet port provided in a sapphire disc. On the outside surface of the inlet port an element, made of a bimetal, for joining the inlet port to the housing of a vacuum photoelectric device is vacuum-tightly fastened about the periphery of the inlet port. A layer of the bimetal which is not in contact with the outside surface of the inlet port consists of a material with a coefficient of linear thermal expansion which differs from the coefficient of linear thermal expansion of sapphire by not more than 10% within a temperature range of from 20°С to 200°С. The invention increases the scope of use of a photocathode assembly for a vacuum photoelectric device with a semi-transparent photocathode, increases the quantum efficiency of a semi-transparent photocathode of a photocathode assembly for a vacuum photoelectric device, and satisfies the requirement of uniform resolving power across the working field of the screen of a vacuum photoelectric device in the event of a photocathode assembly being used in a direct-conversion image intensifier. |
| priorityDate | 2016-07-19^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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