| abstract |
Provided is a hologram recording composition with which it is possible to realize further improvement in diffraction characteristics and the transparency of a hologram.　The present invention provides a hologram recording composition that contains a heteropoly acid, a photopolymerizable monomer, a photopolymerization initiator, and a sensitizing dye having absorption in the visible light region in the presence of an acid. The present invention also provides a hologram recording medium that includes at least a photocurable resin layer containing a hetero polyacid, a photopolymerizable monomer, a photopolymerization initiator, and a sensitizing dye having absorption in the visible light region in the presence of an acid. The present invention also provides a diffraction optical element in which the hologram recording medium is used. The present invention furthermore provides an optical device, an optical component, and an image display device in which the diffraction optical element is used. |