http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0394416-A4
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K19-544 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02C7-101 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02F1-13725 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02F1-1334 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02C7-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02F1-137 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02F1-1334 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02F1-1333 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K19-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02F1-13 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B5-30 |
| filingDate | 1989-10-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1992-07-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0394416-A4 |
| titleOfInvention | Variable density light control apparatus and method |
| abstract | A controllable liquid crystal polarizer (10) has nematic liquid crystal and pleochroic dye (30) in plural, parallel, elongate volumes (13) in a sheet-like containment medium (12). Polarization effectiveness is variable as a function of electric field. A method of making the polarizer includes continuously forming a sheet-like film of a containment medium (12) having a plurality of volumes of liquid crystal (11) and pleochroic dye (30) therein, and during curing of the film, stretching it to elongate the volumes (13). A variable density light control apparatus includes plural polarizers, at least two of which are at least partially crossed, and at least one of the polarizers being variable to the extent that it polarizes light as a function of a prescribed input, thereby to control the intensity of light transmitted (32) through the apparatus proportionally to the intensity of the incident light (31) to the apparatus. The range of intensity control can be varied according to the crossed relationship of the polarizers and/or according to the polarization effectiveness of the controllable polarizer (10). Color effects can be controlled. The apparatus may be utilized in various devices, including displays, windows, eye glasses, and ski goggles. |
| priorityDate | 1988-10-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 26.