http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S62139501-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e5db580deca7130dbe51805c6c608b35 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29L11-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B3-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B9-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C39-10 |
| filingDate | 1985-12-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_586afdbde0ca125d6c36093a90c670e6 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_354f561bffb7dc643484aea356a1100e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8d6192b0145d8a740221522a6625525a |
| publicationDate | 1987-06-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S62139501-A |
| titleOfInvention | Flat plate lens and its production |
| abstract | PURPOSE: To obviate the generation of the shadow of a lens and to improve the contrast and resolution thereof by injecting plural monomers into transparent plastic and polymerizing the monomers. n CONSTITUTION: The transparent plastic 1 having a concave part made to have a spherical face is first formed of a poly-4-methyl pentene-1. A liquid mixture composed of styrene and methyl methacrylate is then injected into the concave part of the transparent plastic. The transparent plastic 1 is thereafter imposed on a rotatable base plate and while the base plate is rotated at a low speed, UV rays are slowly irradiated to the part 2 injected with the liquid mixture composed of the styrene and methyl methacrylate from the center toward the circumference. Then the methyl methacrylate is cured by thermal polymn. The concn. of the copolymer of styrene and methyl methacrylate increases gradually toward the circumferential direction. The concn. of the methyl methacrylate is low and only the styrene is cured by the polymn. near the outside circumference. The entire part of the injected part is thus cured by the thermal polymn., by which the flat plate lens is completed. n COPYRIGHT: (C)1987,JPO&Japio |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5453076-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H02176601-A |
| priorityDate | 1985-12-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 23.