http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2010205322-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0e7f7286c46e676b1bc0daf37b9f6c63 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B2007-0006 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B7-1374 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B1-11 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B13-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B1-11 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-135 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B13-00 |
| filingDate | 2009-03-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ae34a53927b87754ebdfd4d3562d0f3f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e732ea4e56f091ce5e3dd883521e1210 |
| publicationDate | 2010-09-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2010205322-A |
| titleOfInvention | Optical pickup lens |
| abstract | An optical pickup lens capable of obtaining a good spot diameter when NA is 0.84 or more is provided. SOLUTION: A laser beam having a wavelength in a range of 395 nm to 412 nm is applied to an optical pickup lens 1 having a numerical aperture NA of 0.84 or more and a tangent angle of Brewster angle or more so as to become parallel light and a rim intensity. The antireflection films 13 and 14 were formed so that the transmittance when incident was such that the city was 80% or more, so as to satisfy the formula (2). 88.5 ≦ ((R1 × Q1-R2 × Q2) / (Q1-Q2)) / R1 × 100 ≦ 105 (2) R1: Transmittance (%) at 100% position of effective diameter R2: Transmittance (%) at 90% of the effective diameter R3: Transmittance (%) at 80% of the effective diameter Q1: open area 100% of the effective diameter (mm 2) Q2: Opening area in the range of 90% of the effective diameter (mm 2 ) Q3: Opening area in the range of 80% of the effective diameter (mm 2 ) [Selection] Figure 1 |
| priorityDate | 2009-03-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 28.