http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-793208-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/G01J5-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01J5-0802 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01S11-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01J5-0806 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B61K9-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B61L1-20 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01S11-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B61K9-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B61L1-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01J5-08 |
| filingDate | 1955-12-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1958-04-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-793208-A |
| titleOfInvention | Improvements relating to apparatus for detecting infra-red radiation |
| abstract | 793,208. Detecting infra-red radiation. GENERAL ELECTRIC CO. Dec. 22, 1955 [Dec. 30, 1954], No. 36732/55. Drawings to Specification. Class 40 (3). Apparatus for detecting infra-red radiation, of use for example for detecting the passing of a railway vehicle having a hot or overheated journal box, is arranged not to be influenced by the sun's radiation by the inclusion of a filter to eliminate radiation of a wavelength shorter than 5 microns. The filter may be of the silver chloride type. A second filter comprised of silicon monoxide is also included to eliminate radiation from the sun having wavelengths in the 9-11 micron region. In practice a lens constructed of arsenic trisulphide having a spectral passband extending from 1-13 microns is also included so that the overall response is restricted to wavelengths in the bands 5-9 and 11-13 microns. The second filter may be formed as a thin coating of silicon monoxide on the lens. The detector element comprises a conventional bolometer connected in a normally-balanced bridge circuit, the output from which extends via a transformer to an amplifier and suitable indicating or recording devices. The transformer serves to block the standing D.C. output from the bridge but transmits the pulse produced when a hot object passes within range of the apparatus and causes the bolometer to unbalance the bridge. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2260810-A |
| priorityDate | 1954-12-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 25.