http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2097993-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f0dbecf0c34f43903f1491ed83528ab8 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01J31-495 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01J31-495 |
| filingDate | 1981-05-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1982-11-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-2097993-A |
| titleOfInvention | Acoustic imaging devices |
| abstract | By using lenses, mirrors and gratings made of the appropriate materials sound radiation can be refracted, reflected and diffracted in much the same way as can light. It is usual to convert a formed sound image into a visible image. One technique which has employed for this is basically a television camera tube (usually of the vidicon tube type) but with an internally-mounted piezoelectric array in place of the conventional light-sensitive target, which array is acoustically coupled to the tube's front face. In sound tubes such as this a number of significant problems resulted in their failure to achieve wide use. The invention seeks to overcome these problems by making the front face of the tube "through- conductive", and by then mounting the piezoelectric array upon the face's outside surface. This invention provides an acoustic image conversion device comprising a) a scanning electron beam tube (10, preferably of the vidicon type) the scanned front face (11) of which is through-conductive, and b) a piezoelectric array (front electrode 12, piezoelectric element 13 and rear electrode 14) mounted upon the outside surface of the tube's scanned face 11, whereby in operation an acoustic image formed upon the piezoelectric array (12, 13, 14) causes charge separation thereacross which is coupled via the through-conductive face (11) into the tube and there "read" by the scanning electron beam, thus providing an electrical signal corresponding to the acoustic image. <IMAGE> |
| priorityDate | 1981-05-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 26.