Title:
PHOTOLUMINESCENT MOVING IMAGE PATTERN
Document Type and Number:
Japanese Patent JP2023058001
Kind Code:
A
Abstract:
To provide a photoluminescent moving image pattern which has the excellent resolution of a moving image pattern and in which there is not influence on a visually-recognizable angular range of the moving image pattern in comparison to a conventional hologram image by using a density difference of a grating line of a diffraction grating as means for sampling an image that is compressed by an integral photography system.SOLUTION: There is provided a photoluminescent moving image pattern in which a photoluminescent element group and a latent image element group with the different optical characteristics from that of the photoluminescent element group are combined or integrated. The photoluminescent element group is provided such that the photoluminescent elements are arranged with regularity. Each photoluminescent element includes a diffraction grating in which at least the density of the grating line gradually changes. The latent image element group is provided such that the latent image elements obtained by compressing a base image or the latent image elements obtained by division-compressing the base image are arranged with the prescribed regularity. When light is incident and diffracted light is generated, the base image appears as the moving image pattern, and the position of the moving image pattern changes due to the angular change and is visually recognized.SELECTED DRAWING: Figure 1
Inventors:
MORINAGA TADASHI
KIMURA KENICHI
KIMURA KENICHI
Application Number:
JP2022120771A
Publication Date:
April 24, 2023
Filing Date:
July 28, 2022
Export Citation:
Assignee:
NAT PRINTING BUREAU
International Classes:
G02B5/18; B41M3/14; B42D25/328