http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7714944-B2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_669c01133740c5233f2c8738904ea3af |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B27-286 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03B21-604 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03B21-13 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02F1-13 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02F1-1335 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03B21-604 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B5-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03B21-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03B21-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03B21-60 |
| filingDate | 2005-11-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2010-05-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a6f0f308c87a615a7bb3e4ee3d48b70e |
| publicationDate | 2010-05-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-7714944-B2 |
| titleOfInvention | Projection system |
| abstract | The main object of the present invention is to present a projection system excellent in visibility from inside of projection system to outside, and capable of obtaining a sharp contrast display without being influenced by the ambient light. n The present invention provides a projection system comprising: a projection screen, containing a substrate and a polarized light selective-reflection layer formed on the substrate and diffuse-reflects right-handed circularly polarized light or left-handed circularly polarized light, which displays an image by reflecting an image light irradiated from a projector; a projector for projecting an image light on the projection screen; and an external light screen installed at an external light entrance, disposed in a sequence of a linearly polarizing plate and a retardation plate from an external side, and circularly polarizes a light in reverse direction to the circularly polarized light diffuse-reflected by the polarized light-selective reflection layer, wherein a transmission axis of the linearly polarizing plate is in vertical direction. |
| priorityDate | 2004-11-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 163.