| abstract |
(57) [Abstract] [Problem] Having excellent anti-glare property and transparency, and To provide an optical member having a small degree of coloring. An optical member of the present invention has a phosphoric acid group and 3 It is characterized in that a polymer containing a valent neodymium ion contains at least one metal ion selected from a trivalent praseodymium ion and a trivalent holmium ion. Further, the phosphate group is preferably chemically bonded to the molecular structure of the polymer, and the polymer contains a monomer represented by the following formula 1 and a monomer copolymerizable therewith. A copolymer obtained by polymerization is more preferable. Embedded image |