| Predicate |
Object |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B2007-0006
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B2007-13727 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B7-13922
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B7-1353
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B7-1369
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B7-1275
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B7-1378
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B7-1376
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B7-13925
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B7-1374 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-1372
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B13-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-1369
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B5-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-135
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-1353
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-1275
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-1376
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B13-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-1374
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-1392
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-125
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-1378
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B13-00 |
| filingDate |
2011-01-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2011-08-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate |
2011-08-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
KR-101061269-B1 |
| titleOfInvention |
Optical element, objective optical system and optical pickup device |
| abstract |
An optical element for an optical pickup device includes a first optical surface including a superimposed diffractive structure including a plurality of circular bands each formed concentrically about an optical axis and cascaded into a plurality of steps, and concentrically about an optical axis. And a second optical surface that includes a diffractive structure that is formed and includes a plurality of circular bands each of which is divided by a step so as to generate diffracted light rays of a diffraction order whose absolute value is not less than one for the luminous flux. |
| priorityDate |
2003-06-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |