http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103959126-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03B21-147 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03B21-142 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B13-16 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B13-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03B21-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B13-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B19-00 |
| filingDate | 2012-11-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2017-03-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2017-03-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-103959126-B |
| titleOfInvention | Projection optical system and projection type video display device |
| abstract | Projection type video display device has display device (3) and projection optical system (100).Projection optical system (100) possesses and has the 1st lens group (1) of positive light coke and as overall 2nd lens group (2) with negative power as overall.2nd lens group (2), from display device side, has the 1st lens (21) and the 2nd lens (22), they are respectively provided with negative power successively.By image planes for the position in the direction of the optical axis of the 1st lens (21) and the 2nd lens (22) during plane on the basis of, make the 1st lens (21) close to display device (3), make the 2nd lens (22) away from display device (3), thus, the focal position of periphery light in the direction of the optical axis than axis light focal position closer to projection optical system (100), image planes are recessed towards projection optical system side.In addition, make the 1st lens (21) away from display device (3), make the 2nd lens (22) close to display device (3), thus, the focal position of axis light in the direction of the optical axis than periphery light focal position closer to projection optical system (100), image planes are protruded towards projection optical system side.Thus, the curvature of the image planes being formed by projection optical system (100) changes. |
| priorityDate | 2011-12-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 21.