Multilayer reflective film or pigment with viewing angle dependent reflection characteristics
First Claim
1. A multilayer reflective film or multilayer reflective pigment comprising at least one reflective layer and at least one circular polarizing layer, whereby said film or pigment selectively reflects light dependent on viewing angle.
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Accused Products
Abstract
The invention relates to multilayer reflective films and pigments showing selective reflection of light wherein the reflection characteristics are dependent on the viewing angle, characterized in that they comprises at least one reflective layer, at least one circular polarizing layer and optionally at least one optical retardation layer. The invention further relates to the use of these multilayer reflective films and pigments in optical elements, as coatings or in lacquers, inks or paints for cosmetic, decorative or security applications, to inks and paints comprising one or more multilayer reflective pigments dispersed in a light transmissive binder, and to security markings or devices comprising one or more multilayer reflective films or pigments.
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17 Claims
- 1. A multilayer reflective film or multilayer reflective pigment comprising at least one reflective layer and at least one circular polarizing layer, whereby said film or pigment selectively reflects light dependent on viewing angle.
Specification