To provide an image display body having a diffraction grating pattern, especially, to provide an image display body having a diffraction grating pattern, capable of improving the brightness of diffracted light and the visibility of an observation image by combining the diffraction grating pattern having a diffraction grating of a prescribed structure with a color image having prescribed light transmission characteristics and enhancing the diffraction efficiency in the diffraction grating pattern, and also, capable of improving decorative effects, strengthening the safety against counterfeiting and alteration, and capable of enhancing the decorativeness.
In the image display body having the diffraction grating pattern, at least one diffraction grating pattern constituted of a relief type diffraction grating is arranged, and also, a color image is formed on the diffraction grating pattern with transparent color ink capable of selectively transmitting light mainly having a wavelength for making the efficiency of the diffraction grating maximum.
TODA TOSHITAKA
JPH0682612A | 1994-03-25 | |||
JPH08211821A | 1996-08-20 | |||
JPH06281804A | 1994-10-07 | |||
JPH11326618A | 1999-11-26 | |||
JPH06278396A | 1994-10-04 |
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