Patent ID: 6805934
Filing Date: 2004-10-19
Classification: G03H,Y10T

Abstract:
A volume hologram laminate having a first adhesive layer, a volume hologram layer, a second adhesive layer and a surface protective film formed in that order on a substrate, wherein said volume hologram layer is a hologram recording in a recording material comprising a matrix polymer and a photopolymerizable compound, having a glass transition point of 30Â° C.-70Â° C. and a dynamic storage elastic modulus of 5Ã—105 Pa-5 Ã—107 Pa at 50Â° C. when measured at 6.28 rad/s, and said second adhesive layer has a loss tangent delta (tan &dgr;), as represented by the dynamic loss elastic modulus/dynamic storage elastic modulus for the frequency dependent property at 10âˆ’1 rad/s-10 rad/s that increases with lower frequency.