Holographic multi-layer material, useful for recording independent holographic images/lattice structures in individual layers, includes photosensitive layer assembly applied on both sides of transparent carrier, and optionally cover layer

摘要

Holographic multi-layer material comprises a photosensitive layer assembly, which is applied on both sides of a transparent carrier, and optionally a cover layer as a protective layer on a surface of the layer assembly opposite to the carrier. The layer assembly comprises at least two gelatin layers with embedded silver halides, and the gelatin layers are at least two silver halide emulsion layers and a blue-sensitive layer. A light sensitivity in the layer assembly existing green and/or red-sensitive layers is 1-25% of the light sensitivity of the blue sensitive layer in the exposure area. Holographic multi-layer material comprises a photosensitive layer assembly, which is applied on both sides of a transparent carrier, and optionally a cover layer as a protective layer on a surface of the layer assembly opposite to the transparent carrier. The layer assembly comprises at least two gelatin layers with embedded silver halides, and the gelatin layers are at least two silver halide emulsion layers and a blue-sensitive layer. A light sensitivity in the layer assembly existing green and/or red-sensitive layers is 1-25% of the light sensitivity of the blue sensitive layer in the exposure area. A sensitivity distance of the green- and red-sensitive layer is 0-25% in the respective exposure area. The blue-sensitive layer of the layer subsequent to a direction of radiation is separated by absorbing a light-insensitive layer of gelatin with a blue light absorbing filter dye, which is optionally included in the light-sensitive and light-insensitive layers following in the direction of irradiation. A light-insensitive gelatin layer is optionally arranged between the green- and red-sensitive layer with a green light-absorbing filter dye. The filter dye layers have a dispersion of = 25% in comparison to the scatter in each of the following light-sensitive layers in the direction of irradiation. An independent claim is included for producing the holographic multi-layer material, comprising preparing and stabilizing the blue-sensitive silver halide emulsion and the green- and/or red-sensitive silver halide emulsion with the respective sensitivities, preparing and stabilizing the gelatin emulsion with the blue light-absorbing filter dye and optionally the gelatin emulsion with the green light-absorbing filter dye, and then casting and curing the emulsions on the transparent carrier to the layers with the desired sequence of layers, starting on the carrier with the red-sensitive or green-sensitive layer and optionally applying the cover layer as protective layer and the layer assembly on a second side of the carrier, where the carrier is turned and the desired layer structure is performed in the same manner on the second side of the carrier.