http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2002131519-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6c8d4dc7bd1a30d8fda907fceaeb4e69 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B1-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B5-10 |
| filingDate | 2000-10-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c62c01a02b188211a2aa257507527eb1 |
| publicationDate | 2002-05-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2002131519-A |
| titleOfInvention | Projection lens |
| abstract | PROBLEM TO BE SOLVED: To achieve high shape accuracy despite being lightweight and inexpensive, and to be incorporated in a projection device which projects not in a direction perpendicular to a screen but in an oblique direction, in particular, an obliquely downward direction, and has a distortion and Provided is a large-sized projection lens capable of projecting a high-definition image without deformation. A projection lens provided with a reflective layer on a surface of a resin substrate formed on a predetermined curved surface, wherein incident light from a direction perpendicular to an optical functional surface of the resin substrate at a curved surface portion of the lens. The average value of the in-plane birefringence retardation per unit thickness with respect to is set to 30 nm / mm or less in a region of at least 60% of the area of the optical function surface, and a metal reflective film and a transparent protective film are sequentially formed on the curved surface portion A projection lens characterized by: |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2011203725-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2005148666-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111457856-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2008541167-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-4632657-B2 |
| priorityDate | 2000-10-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 75.