Optically variable security devices

A method of manufacturing a device for providing an image having an optically variable feature, comprising:

• a) providing a diffractive structure for forming at least a portion of the image;
• b) providing an optically variable structure distinct from the diffractive structure, for providing the optically variable feature to the image, wherein the optically variable structure changes color with a change in angle of incident light, and wherein the optically variable structure comprises a first reflector layer, an absorber layer, and a dielectric layer between the reflector and absorber layers;
• c) covering the diffractive structure or the optically variable structure with an adhesive;
• d) after steps (a)-(c), activating, with energy, the adhesive and coupling the diffractive structure and the optically variable structure together in a predetermined mutual arrangement, wherein the energy activated adhesive forms a layer;
• wherein the diffractive structure comprises a relief pattern and a high refraction index layer made of a material having an index of refraction no less than 1.65;
• and
• wherein the diffractive structure comprises a patterned opaque coating so that the diffractive structure has opaque regions and light transmissive regions.