Color shifting film with a plurality of fluorescent colorants

Details Color shifting film with a plurality of fluorescent colorants Color shifting film with a plurality of fluorescent colorants

G - Physics

02

B

G02B 5/22 (2006.01)

Patent

CA 2438061

Disclosed are articles having a color shifting film and indicia located behind the color shifting film. At least a first and second colored portion are arranged as a foreground and background of the indicia. The first portion includes a first fluorescent colorant and the second portion includes a different second fluorescent colorant. At least one of the colored portions is patterned. Bright fluorescent emission is visible from the different colorants over different angular ranges to produce high contrast reversal or change.

L'invention concerne des articles comprenant un film à changement de couleur et des informations situées derrière le film à changement de couleur. Au moins une première et une seconde partie colorée sont disposées à l'avant-plan et à l'arrière-plan des informations. La première partie comprend un premier colorant fluorescent et la seconde partie comprend un second colorant fluorescent différent du premier. Au moins une des parties colorées comprend des motifs. Les différents colorants génèrent une lumière fluorescente vive dans différentes gammes angulaires et produisent une inversion ou un changement de couleur à grand contraste.

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