http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2006216162-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_be92719b856db86c092cc233e9512ca2 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B5-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-135 |
| filingDate | 2005-02-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a479d21241adc97284899582b1c7d22f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_21a38a34955e9e156d20255b861498aa http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4cd93311a94dfd41f3c35953fba906d6 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dad08133092ecee786b2ac8226d96452 |
| publicationDate | 2006-08-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2006216162-A |
| titleOfInvention | Diffractive optical element and optical pickup device |
| abstract | A diffractive optical element having high light utilization efficiency is realized by reducing region shift at the time of manufacturing a diffraction grating portion divided into a plurality of regions and reducing gaps and overlaps between the regions. In the diffractive optical element according to the present invention, the diffraction grating portion is divided into at least three regions 61, 62a, 63a having different lattice vector sizes, and the lattice vectors of all regions are parallel. is there. In the diffractive optical element of the present invention, at least three or more regions 61, 62a and 63a having different grating vector sizes in the diffraction grating portion are subjected to light interference exposure or replication exposure using a master diffractive optical element. Since it is fabricated, a periodic structure with a fine pitch can be fabricated, and the lattice vectors of at least three or more regions are formed in parallel, so that incomplete lattice regions can be reduced, and high A diffractive optical element with high reliability and high light utilization efficiency can be realized. [Selection] Figure 1 |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-115047683-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-115047683-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8179600-B2 |
| priorityDate | 2005-02-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 49.