Secure optical identification means and method with enhanced variability
First Claim
1. Secure optical identification means, comprising:
- (a) a first lacquer layer;
(b) a metallic layer disposed on a first surface of said first lacquer layer, with a first surface of said metallic layer in contact with said first surface of said first lacquer layer;
(c) a diffraction pattern embossed in said first surface of said first lacquer layer through said metallic layer;
(d) a pattern formed in said metallic layer by demetallizing areas of said metallic layer; and
(e) a second lacquer layer, having the same refractive index as that of said first lacquer layer, disposed on a second surface of said metallic layer so as to fill in voids adjacent said diffraction pattern caused by said demetallizing areas of said metallic layer.
1 Assignment
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Accused Products
Abstract
In a preferred embodiment, secure optical identification, including: a first lacquer layer; a metallic layer disposed on a first surface of the first lacquer layer, with a first surface of the metallic layer in contact with the first surface of the first lacquer layer; a diffraction pattern embossed in the first surface of the first lacquer layer through the metallic layer; a pattern formed in the metallic layer by demetallizing areas of the metallic layer; and a second lacquer layer, having the same refractive index as that of the first lacquer layer, disposed on a second surface of the metallic layer so as to fill in voids adjacent the diffraction pattern caused by the demetallizing areas of the metallic layer.
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Citations
12 Claims
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1. Secure optical identification means, comprising:
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(a) a first lacquer layer; (b) a metallic layer disposed on a first surface of said first lacquer layer, with a first surface of said metallic layer in contact with said first surface of said first lacquer layer; (c) a diffraction pattern embossed in said first surface of said first lacquer layer through said metallic layer; (d) a pattern formed in said metallic layer by demetallizing areas of said metallic layer; and (e) a second lacquer layer, having the same refractive index as that of said first lacquer layer, disposed on a second surface of said metallic layer so as to fill in voids adjacent said diffraction pattern caused by said demetallizing areas of said metallic layer. - View Dependent Claims (2, 3, 4)
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5. A method of producing secure optical identification means, comprising:
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(a) providing a first lacquer layer; (b) placing a metallic layer on a first surface of said first lacquer layer, with a first surface of said metallic layer in contact with said first surface of said first lacquer layer; (c) embossing a diffraction pattern in said first surface of said first lacquer layer through said metallic layer; (d) producing a pattern in said metallic layer by demetallizing areas of said metallic layer; and (e) placing a second lacquer layer, having the same refractive index as that of said first lacquer layer, on a second surface of said metallic layer so as to fill in voids adjacent said diffraction pattern caused by said demetallizing areas of said metallic layer. - View Dependent Claims (6, 7, 8)
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9. Secure optical identification means, comprising:
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(a) a first lacquer layer; (b) a metallic layer disposed on a first surface of said first lacquer layer, with a first surface of said metallic layer in contact with said first surface of said first lacquer layer; (c) a diffraction pattern embossed in said first surface of said first lacquer layer through said metallic layer; (d) a bar code pattern formed in said metallic layer by demetallizing areas of said metallic layer; and (e) a second lacquer layer, having the same refractive index as that of said first lacquer layer, disposed on a second surface of said metallic layer so as to fill in voids adjacent said diffraction pattern caused by said demetallizing areas of said metallic layer.
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10. A method of producing secure optical identification means, comprising:
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(a) providing a first lacquer layer; (b) placing a metallic layer on a first surface of said first lacquer layer, with a first surface of said metallic layer in contact with said first surface of said first lacquer layer; (c) embossing a diffraction pattern in said first surface of said first lacquer layer through said metallic layer; (d) producing a pattern in said metallic layer by using laser-etching to demetallize areas of said metallic layer; and (e) placing a second lacquer layer, having the same refractive index as that of said first lacquer layer, on a second surface of said metallic layer so as to fill in voids adjacent said diffraction pattern caused by said demetallizing areas of said metallic layer.
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11. A method of producing secure optical identification means, comprising:
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(a) providing a first lacquer layer; (b) placing a metallic layer on a first surface of said first lacquer layer, with a first surface of said metallic layer in contact with said first surface of said first lacquer layer; (c) embossing a diffraction pattern in said first surface of said first lacquer layer through said metallic layer; (d) producing a pattern in said metallic layer by using a thermal printer to demetallize areas of said metallic layer; and (e) placing a second lacquer layer, having the same refractive index as that of said first lacquer layer, on a second surface of said metallic layer so as to fill in voids adjacent said diffraction pattern caused by said demetallizing areas of said metallic layer.
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12. A method of producing secure optical identification means, comprising:
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(a) providing a first lacquer layer; (b) placing a metallic layer on a first surface of said first lacquer layer, with a first surface of said metallic layer in contact with said first surface of said first lacquer layer; (c) embossing a diffraction pattern in said first surface of said first lacquer layer through said metallic layer; (d) producing a bar code pattern in said metallic layer by demetallizing areas of said metallic layer; and (e) placing a second lacquer layer, having the same refractive index as that of said first lacquer layer, on a second surface of said metallic layer so as to fill in voids adjacent said diffraction pattern caused by said demetallizing areas of said metallic layer.
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Specification