Latent Image with Multi-colour KIPP-effect PEAK-pixel
A latent image made by blind embossing on a substrate printed with raster dots (pixels). It is viewed in oblique light at an acute angle. Embossed hemispherical elements are made in such a way that they have pixels of different colours on their opposite side surfaces. Depending on illumination direction, one of the two colours becomes bright and intense. This colour determines the overall hue of the image. As a result, the raster substrate and embossed structure interact with each other to produce the KIPP-effect with a colour shift.
a
b
c
d
e
f
Latent image with multi-colour KIPP-effect. 500 UAE Dirhams (2013):
a — view at a right angle in incident light; b, c — view at an acute angle at opposite illumination directions; d — location of coloured raster dots on side surfaces of the embossed elements; e — oblique illumination at an acute angle on the right: the latent image becomes green, red dots are shaded; f — oblique illumination at an acute angle on the left: the latent image becomes red, green dots are shaded