Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Tomonari Nakayama0
Keiko Abe0
Date of Patent
November 6, 2018
0Patent Application Number
149479100
Date Filed
November 20, 2015
0Patent Citations Received
Patent Primary Examiner
Patent abstract
An optical element having a substrate and a light-shielding film on part of an outer portion of the substrate further contains a coating on the light-shielding film, the coating containing a cured mixture of a melamine or benzoguanamine resin, and a phenolic resin, in proportions by mass of 1:5 to 7:5.
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