| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_14df928cce1112b89356928855b60351
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1738818abce59a8a9f7faea75e64b48e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ffb4142d53c703020f7866bd0f48cccf
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c7f3bdbd96ff1411e2a58b73bfd20633
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4927e81104aa0d4c9fcd68fbae0d4c3b |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B3-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B2007-0006 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B7-123
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B7-1275
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B5-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B7-1353
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B7-1374
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B27-4283
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B7-13922
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B27-42
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B13-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B27-4238 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-125
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-09
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B13-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B13-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B5-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-135 |
| filingDate |
2007-02-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_69ab407d91b487826bebf67b9197adc5
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_33cd4c558161ace632ca14d96974d6c4
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1b322ad55ea71ad46fb87b23ea59c17a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_673fe4f911345534843c4eadf5eb077a |
| publicationDate |
2007-09-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2007102316-A1 |
| titleOfInvention |
Optical pickup apparatus, objective optical element, and optical information recording and reproducing apparatus |
| abstract |
Provided are an optical pickup apparatus, an objective optical element, and an optical information recording and reproducing apparatus, capable of recording and/or reproducing information in a compatible way to different types of optical discs. The optical pickup apparatus comprises 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 areas of a central area and a peripheral area surrounding the central area, wherein the central area has a first optical path difference giving structure and the peripheral area has a second optical path difference giving structure. The objective optical element focuses the light fluxes passing through its central and peripheral areas on the information recording surfaces of respective prescribed optical discs so that the information can be recorded and/or reproduced. The optical pickup apparatus has such wavelength dependence of spherical aberration that the spherical aberration change caused by the temperature change of the objective optical element is corrected by the temperature dependent wavelength change of the light flux emitted from the first light source. |
| priorityDate |
2006-03-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |