| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_905122d8678a831c0f8af203f34145dc |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B41J2-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-0045
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04N1-036
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B3-00 |
| filingDate |
1991-07-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e7a62901c3830b5d3c1b12f297c6b444
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_84cd4bdd287effb67d557ce921e467c8 |
| publicationDate |
1993-02-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-H0534508-A |
| titleOfInvention |
Method for manufacturing translucent substrate for optical writing head |
| abstract |
(57) [Summary] [Objective] An arbitrary refractive index is formed in an arbitrary pattern in a light-transmissive substrate for an optical writing head by using a laser beam by a method having a simple process and a low manufacturing cost. [Structure] A transparent substrate 1 held in a potassium nitrate solution is irradiated with laser light through a mirror 3 and a lens system 4, A desired refractive index distribution is realized in the translucent substrate 1 by the optical damage caused at this time and the ion exchange due to the temperature rise. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9790128-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10737976-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2015044445-A1 |
| priorityDate |
1991-07-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |