http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7885167-B2
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/G11B2007-13727 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B7-1378 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B7-1275 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B7-13925 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B13-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B7-1374 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-125 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-135 |
| filingDate | 2006-11-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2011-02-08-04:00^^<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 |
| publicationDate | 2011-02-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-7885167-B2 |
| titleOfInvention | Objective lens for optical pickup apparatus, objective lens unit for optical pickup apparatus and optical pickup apparatus using the same |
| abstract | The present invention relates to an objective lens, an objective lens unit and an optical pickup apparatus. The objective lens is provided for an optical pickup apparatus recording or reproducing information by converging a light flux with a wavelength λ 1 emitted from a light source onto an information recording surface of an optical information recording medium. The objective lens is formed of: a single lens having at least one aspheric surface. In the objective lens, an effective aperture, a thickness on an optical axis, a focal length, a numerical aperture, and a refractive index satisfy the predetermined conditional expressions. The objective lens unit is provided for an optical pickup apparatus and includes an aberration correcting element and the objective lens. |
| priorityDate | 2005-11-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 176.