Optically variable element with a polychrome effect AURORA

An optically variable security element with a multiple colour switching effect. It was developed by Innovia Security company as a further development of the G-Switch® element. It is applied during the formation of the Guardian substrate on one of its inner layers in the form of an image (picture or alphanumeric characters). A pair of image elements that work in combination appear as one colour at certain observation conditions, then a totally different colour at other observation conditions. Ink pigments which are semi-transparent in transmitted light have a pearlescent sheen in reflected light. The effect of a colour switch is observed both on front and reverse side of the banknote if the element is located on a clear window.

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