| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ee1c19da359446fb5c4f0458a57b783d |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B5-30
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/G02F1-13
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K19-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K19-12 |
| filingDate |
1996-04-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ad9fb23afd3f4d365e5aec7d6805b9de
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_03817604c4977f6608832304ef9709da
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e00a121073a4fc54be25a68d41591d7e |
| publicationDate |
1997-10-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-H09281332-A |
| titleOfInvention |
Optical head device |
| abstract |
(57) Abstract: An optical head device using a liquid crystal composition having high light utilization efficiency in a wide temperature range is provided. SOLUTION: A grid-shaped uneven portion 2 of a first glass substrate 1 And a nematic liquid crystal composition having a phase transition temperature ≧ 80 ° C. or more to an isotropic phase at Δn ≧ 0.21 containing a specific high Δn compound such as R-Ph-Ph-CN is injected into the diffractive element 10. It was made. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6917576-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6580674-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7511887-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-0116627-A1 |
| priorityDate |
1996-04-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |