http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20080104290-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_14df928cce1112b89356928855b60351 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B2007-0006 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B3-08 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B5-18 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/G11B7-1353 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B7-1275 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B13-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B27-4238 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B27-4283 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B7-123 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B27-42 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-09 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-135 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B5-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B13-18 |
| filingDate | 2007-02-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d21e9afc8665a1ae05ad634701ae3793 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_37f57a2c7b672498736071ce9c601e5a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1bc88e30c39fa29861941acc37b227da http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5c796c562ba511104c64e7ef9b03d3c8 |
| publicationDate | 2008-12-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-20080104290-A |
| titleOfInvention | Optical pickup apparatus, objective optical element and optical information recording and reproducing apparatus |
| abstract | The present invention relates to an optical pickup apparatus, an objective optical element, and an optical information recording and reproducing apparatus capable of recording and / or reproducing information compatible with other types of optical discs. An optical pickup apparatus according to the present invention includes a first light source, a second light source, a third light source, and an objective optical element. The optical surface of the objective optical element has at least two regions of a central region and a peripheral region around the central region, the central region has a first optical path difference providing structure, and the peripheral region has a second optical path difference providing structure Has The objective optical element condenses the light beams passing through the central region and the peripheral region of the objective optical element so as to enable recording and / or reproduction of information on the information recording surface of a predetermined optical disc, respectively. The optical pickup apparatus also has a wavelength dependency of spherical aberration for correcting a change in spherical aberration accompanying a change in temperature of the objective optical element by a change in wavelength of a wavelength of a light beam emitted from the first light source accompanying a change in temperature. Has |
| priorityDate | 2006-03-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 184.