http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0446236-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ab0f666fbf8c7ab36b224d3fc20e2b53 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_3b683f6ce65aa6461b562ee4219bf806 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02C2202-16 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02C7-104 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02C7-10 |
| filingDate | 1989-11-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1995-02-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5794c9cf98375a9932a36b487897d5e8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2cd6631660582a3aba80ec7dd0946bc1 |
| publicationDate | 1995-02-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0446236-B1 |
| titleOfInvention | Light filter for improving vision |
| abstract | PCT No. PCT/EP89/01329 Sec. 371 Date Oct. 21, 1991 Sec. 102(e) Date Oct. 21, 1991 PCT Filed Nov. 7, 1989 PCT Pub. No. WO90/05321 PCT Pub. Date May 17, 1990.A light filter for filtering light for a human eye with the filter being formed of a plastic material in combination with the filtering material. The filtering material is added so as to provide the filter with spectral transmittance characteristics which include a cut-off location ( lambda H) of 450 nm to 550 nm, a steepness (S) for the transmittance curve at the cut-off location of at least 1%.nm-1, a means transmittance ( tau 2) in a spectral range from 380 to 450 nm of at most 20%, and a means transmittance ( tau 3) in a spectral range from 450 to 550 nm of at least 40%. The filtering material preferably includes an organic dye dissolved in the plastic or an organic pigment finely distributed in the plastic material. In addition, the mean transmittance ( tau 2) in the 380 to 450 nm spectral range is at most 10% and the means transmittance ( tau 3) in the 450 to 550 nm spectral range is at least 60%. Further, the light filter has a means transmittance of ( tau 4) in a 550 to 780 nm spectral range of at least 65% and a means transmittance ( tau 1) in a 250 to 380 nm spectral range of at most 10%. |
| priorityDate | 1988-11-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 19.