Patent ID: 8440370

Claim:
A method of manufacturing a reflection hologram comprising of the steps of: providing a layer of photopolymer material comprising a binder and at least one monomer where the photopolymer layer does not comprise a dye; printing a pattern of activating material comprising a dye upon the layer of photopolymer material to provide patterned regions where dye is present and regions where no dye is present so as to selectively activate the patterned regions of the layer of photopolymer material to be sensitive to light of a holographic recording process; and exposing the layer to a holographic recording process to record a hologram only in the activated patterned regions of the photopolymer layer, where the photopolymer layer outside the activated patterned regions is insensitive to the light of the holographic recording process as there is no dye outside the activated patterned regions.