Multi-color, multi-image retroflective goniochromatic display

Details Multi-color, multi-image retroflective goniochromatic display Multi-color, multi-image retroflective goniochromatic display

1995-03-10

1997-04-29

Watkins, William

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

428156, 428149, 428325, 428204, 428 29, 428 30, 359540, 359529, G02B 5122, G02B 5128

Patent

active

056247311

ABSTRACT:
A display which when illuminated by a light source is adapted to present selectively to an observer colors and images that depend both on the angular position of the observer and on the angular position of the light source relative to the display. The display includes a substrate on which is coated an opaque base layer having a color image printed thereon. Coated over the base layer is an intermediate layer of transparent material having interference pigment particles dispersed therein which impart goniochromatic properties to this layer, the color seen by the observer depending on said angular positions. Overlying the intermediate layer is a retroreflectivity layer formed by transparent beads whereby light reflected from the base layer or from the intermediate layer, as seen by the observer, passes through the retroreflectivity layer to enhance the brilliance of the colors or images presented to the observer.

REFERENCES:
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patent: 3861946 (1975-01-01), Waitkins et al.
patent: 3877786 (1975-04-01), Booras et al.
patent: 4268117 (1981-05-01), Sevelin
patent: 4763985 (1988-08-01), Bingham
patent: 5169707 (1992-12-01), Faykish et al.
patent: 5417515 (1995-05-01), Hachey et al.

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