| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_14df928cce1112b89356928855b60351 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B2007-0006 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B7-1275
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B7-1353
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B7-1376
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B7-1374
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B7-13922
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B7-139 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B13-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-135
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B13-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-125
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-00 |
| filingDate |
2004-10-28^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_726f32e92d8e1dee6acdc506892668f4
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_64a25603def1a02b071728559afed2d0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_41a8d66583d2cd7c4fa1d52d4387d612 |
| publicationDate |
2006-10-24^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
KR-20060110272-A |
| titleOfInvention |
Optical pickup device and divergent angle conversion element |
| abstract |
SUMMARY OF THE INVENTION An object of the present invention is to provide an optical pickup device and divergent angle conversion element that are compatible with high density optical discs, DVDs, and CDs, and which ensure light quantity and correct spherical aberration. The optical pickup device of the present invention includes a first divergence angle conversion element through which the first luminous flux of wavelength lambda 1 passes, and a second divergence angle conversion element through which the second luminous flux of wavelength lambda 2 and the third luminous flux of wavelength lambda 3 pass. The optical magnification m2 for the second luminous flux and the optical magnification m3 for the third luminous flux of the second divergent angle conversion element are different from each other. |
| priorityDate |
2003-11-04^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |