| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b66df65a3193031a38086188f968b0b1
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7ba1832e7dcdec9e35aeb6354a7eece6 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02F1-141 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02F1-216 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02F1-13
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02F1-21
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02F1-141
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02F1-137 |
| filingDate |
1994-04-29^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fce3adf8df51fd6b1abae8e4fd48e83c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a381d8a4f0f848dae74d8a27ad8017f5 |
| publicationDate |
1994-11-09^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
GB-2277808-A |
| titleOfInvention |
Optical filter |
| abstract |
An electrically-controllable liquid crystal filter device comprises two partially-reflecting substrate structures 1 and 2 mounted substantially parallel to each other with a space therebetween to form a Fabry-Perot filter. A layer of feroelectric liquid crystal material 10 is disposed in the space, the liquid crystal material 10 being switchable, by application of an electric field, between different refractive index values whereby the device is switchable between transmissive and reflective states for light of a particular narrow wavelength band. The spacing of the substrate structures 1 and 2 is selected in relation to the wavelength of light to be transmitted, such that the Fabry-Perot filter operates in a low order state, which may be the first order. <IMAGE> |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6278562-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5943474-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0893709-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5949959-A |
| priorityDate |
1993-04-30^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |