Predicate |
Object |
assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_fcc0b66123940d1b32783569ebfa2d45 |
classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29K45-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29L11-00 |
classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-135 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C55-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B5-30 |
filingDate |
2003-10-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_95513f084bc03f16b0b6a1ef51135a54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_94e18d8876d323ecc26aebe9522a03a5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_57a7f20bdce940573c687f1661f425a6 |
publicationDate |
2005-05-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
publicationNumber |
JP-2005128047-A |
titleOfInvention |
Wave plate |
abstract |
Disclosed is a wavelength plate for an optical information recording / reproducing apparatus that has excellent initial characteristics, is hardly affected by the use environment and the manufacturing environment, and has excellent long-term reliability. A wave plate using a retardation film made of a cyclic olefin resin, wherein the wavefront aberration is 50 mλ or less when the wavelength is λ. Is preferably a retardation film having a value (γ) defined by the following formula (a) of 7 or less. γ = (| α−β | / Re) × 10 4 ...... Formula (a) [In the formula (a), α represents a heat shrinkage rate (%) after heating for 24 hours at 120 ° C. in the main stretching direction, and β is a heat shrinkage rate (%) after heating for 24 hours at 120 ° C. in the substretching direction. Represents. Re represents a retardation value (nm) at a wavelength of 590 nm of the retardation film. ] [Selection figure] None |
isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2007256603-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2019128467-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8609005-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2009204742-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-7308592-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110082850-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-5040915-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2014157288-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10035889-B2 |
priorityDate |
2003-10-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
type |
http://data.epo.org/linked-data/def/patent/Publication |