http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-3626687-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b0ecf5a7f10d346dd7a436f8e7f126bb |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B27-0025 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B1-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C03C4-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C03C3-247 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B1-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C03C3-247 |
| filingDate | 2018-04-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e5abbd8533e9da313647c6f31f5ab2c5 |
| publicationDate | 2020-03-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-3626687-A1 |
| titleOfInvention | Optical glass, optical element, and preform |
| abstract | There are provided an optical glass that can compensate for chromatic aberration of glass lenses with high precision because of its high anomalous dispersion, that is lighter than that in the related art, and that is easily handled in a polishing process because of its low degree of abrasion, an optical element, and a preform. nThe optical glass contains P 5+ , Al 3+ , and Zn 2+ as cation components and O 2- and F - as anion components, nwherein the cation components are P 5+ 25% to 40%, Al 3+ 5% to 20%, Zn 2+ 1% to 15%, and Ba 2+ 0% to 28% on a cat.% basis, nthe anion components are O 2- 40% to 70% and F - 30% to 60% on an ani.% basis, and nthe optical glass has a refractive index (nd) of 1.53 to 1.60, an Abbe number (vd) of 65 to 75, a partial dispersion ratio θg.f of 0.520 to 0.560, and a degree of abrasion of 420 or less. |
| priorityDate | 2017-05-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 35.