http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0613036-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a8a9982b1666c54b5bf02d6c944891e4 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02C7-102 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02C7-10 |
| filingDate | 1993-12-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e34973c3f3d1ecaa224f06d03cf87ca2 |
| publicationDate | 1994-08-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0613036-A1 |
| titleOfInvention | Protective filter lenses |
| abstract | An ophthalmic protective filter lens having a scotopic transmittance lower than the photopic transmittance by more than a factor of two, a dominant wavelength within the ranges of 580-605 nm and a color purity of 75-85 whereby colors perceived through the lens are approximately those of the scene being viewed. n A method of producing an ophthalmic protective filter lens which comprises firing a photochromic glass lens in a hydrogen-containing atmosphere within the temperature range of 400-430°C for a time of 1-8 hours to impart a scotopic transmittance lower than the photopic transmittance by a factor of at least two, a dominant wavelength within the ranges of 580-605 nm and a color purity of 75-85 whereby colors perceived through the lens are approximately those of the scene. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9720246-A1 |
| priorityDate | 1993-02-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 23.