Transparent optically variable device

Details Transparent optically variable device Transparent optically variable device

G - Physics

02

B

88/114, 283/20,

G02B 1/00 (2006.01) G02B 1/10 (2006.01) G02B 5/20 (2006.01) G02B 5/28 (2006.01)

Patent

CA 2015301

Transparent optically variable device comprising a symmetric three-layer coating. The three-layer coating has first and second partially transmitting absorber layers and a dielectric spacer layer disposed between the first and second absorber layers.

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