http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S6430032-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1af8df51ce24ca931ae718fb747f6aa0 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-09 |
| filingDate | 1987-07-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_878317b20fc3ac3b3b7636201e866f65 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0b9a6a17bf77b7d9d9542c2cfe449c4e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dd5a09b8744764d3f3857f636cabc0ff |
| publicationDate | 1989-01-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S6430032-A |
| titleOfInvention | Optical system driver |
| abstract | PURPOSE:To improve the follow-up performance of focus control and tracking control by forming an optical system holding body by resin whose main component is diacetylene. CONSTITUTION:The objective lens holding body 1 is inserted into a supporting shaft 11 through a bearing and an objective lens 2 and a dead weight 12 having weight almost similar to that of the objective lens 2 to hold weight balance are fixed in the vicinity of the bearing. A focusing coil 3 is wound around the external peripheral part of the holding body 1, rectangular tracking coils 4a, 4b are fitted under the coil 3 and a magnetic circuit for generating a magnetic field is arranged so as to cross the coils 4a, 4b. The holding part 1 is formed by resin whose main component is diacetylene. Since the light-weight optical system holding body 1 excellent in electric insulating property and rigidity is used, the follow-up performance of focus control and tracking control can be improved. |
| priorityDate | 1987-07-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
| Predicate | Subject |
|---|---|
| isDiscussedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/compound/CID9997 http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID410850823 |
Total number of triples: 14.