http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3930157-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5c4ac640316f0b9aa95616a643acb91a |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01J29-458 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01J31-49 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01J29-45 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01J31-49 |
| filingDate | 1974-07-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1975-12-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_932ac2a66d549b67a49d706ba7887044 |
| publicationDate | 1975-12-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-3930157-A |
| titleOfInvention | Pyroelectric camera tube systems |
| abstract | A pyroelectric camera tube system is characterized by an electrical impedance connected at one end to the pick up electrode on the pyroelectric target of the tube and a steady positive voltage source connected to the other end of the impedance, and in that the product of the resistance RT and the capacitance CT of the pyroelectric target is Rh. in the range 1000 Tau F > OR = RT CT > OR = 1/2 Tau F, preferably in the range 100 Tau F > OR = RT CT > OR = 3 Tau F, where Tau F is the scanning period (alternatively known as the field time) required for the electron beam of the tube to be repetitively scanned across the pyroelectric target. Such a system provides quenching of an excess negative charge left from the electron beam on the target by positive charge leakage from the voltage source and thus obviates the need for ionized gas as used in conventional tubes. The pyroelectric target material may be lead germanate, lead germanate silicate or lithium sulphate. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4053806-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4246510-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3958121-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3985685-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4104771-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4386294-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3967121-A |
| priorityDate | 1973-07-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 34.