http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2006189695-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/G02F1-13 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-125 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B5-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B5-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-135 |
| filingDate | 2005-01-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dad08133092ecee786b2ac8226d96452 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a479d21241adc97284899582b1c7d22f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4cd93311a94dfd41f3c35953fba906d6 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_21a38a34955e9e156d20255b861498aa |
| publicationDate | 2006-07-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2006189695-A |
| titleOfInvention | Liquid crystal diffractive optical element, optical head device, and optical disk drive device |
| abstract | A liquid crystal diffractive optical element capable of obtaining a large diffraction angle even in a short wavelength light, having a large diffraction efficiency and excellent polarization selectivity, and having a small incident angle dependency and high efficiency against diverging light and temperature change. Is realized. The present invention relates to a liquid crystal diffractive optical element 1 having a diffraction grating composed of a periodic structure of a region 4 exhibiting optical anisotropy and a region 5 exhibiting optical isotropy. In the case where the region 4 exhibiting the directivity is made of a liquid crystal material, and the isotropic phase transition temperature of the liquid crystal material is Tni and the crystallization temperature is Tsn, the use environment temperature T of the diffraction grating is Tsn [° C.] ≦ T ≦ It is characterized by a relationship of Tni-10 [° C.]. That is, in a liquid crystal diffractive optical element using a liquid crystal material having an isotropic phase transition temperature Tni and a crystallization temperature Tsn, an element having low temperature dependence of diffraction efficiency when the operating environment temperature T of the element is in the above relationship. Can be realized. [Selection] Figure 1 |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-6008847-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9594276-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2010032807-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11002893-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-WO2012160740-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2012160740-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-101527074-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103547950-A |
| priorityDate | 2005-01-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 66.