http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20040041948-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c16d2144a81bfa32a665dca1e93c3d37 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B2220-2562 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B2220-2545 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B7-133 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B7-127 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B7-1376 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B7-1353 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B7-1395 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B7-1374 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B7-1378 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-1395 |
| filingDate | 2002-11-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_573626b312bd362568203b215936c38a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2cc5d1f3b1dc078599b8c04244f36e1b |
| publicationDate | 2004-05-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-20040041948-A |
| titleOfInvention | Optical pickup |
| abstract | Disclosed is an optical pickup apparatus capable of removing birefringence due to non-uniformity of an optical recording medium by using a birefringence phenomenon of a beam splitter made of a nonlinear material.n n n The disclosed optical pickup apparatus includes a light source for irradiating laser light; A nonlinear beam splitter made of a nonlinear material for converting a propagation path of incident light, the refractive angle being different according to the polarization direction of the incident light; An objective lens for focusing the incident light via the nonlinear beam splitter to form a light spot on the optical recording medium; And a photodetector, which is reflected from the optical recording medium and diverged in different paths according to the polarization direction through the nonlinear beam splitter, and receives each incident light to detect an information signal and an error signal. |
| priorityDate | 2002-11-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 28.