Optically variable element

Details Optically variable element Optically variable element

2007-05-08

2007-05-08

Boutsikaris, Leonidas (Department: 2872)

Optical: systems and elements

Holographic system or element

Authentication

C430S010000, C283S086000, C428S029000

Reexamination Certificate

active

10514370

ABSTRACT:
The present invention relates to an optically variable element having surface portions with achromatic surface structures and different scatter, diffraction and reflection characteristics. The achromatic surface structures are combined with a thin-film structure, whereby upon turning or tilting the optically variable element, it is not the impression of a continuous color transition, but a defined, almost discrete color change that is produced for the viewer.

REFERENCES:
patent: 3858977 (1975-01-01), Baird et al.
patent: 4568141 (1986-02-01), Antes
patent: 4856857 (1989-08-01), Takeuchi et al.
patent: 5032003 (1991-07-01), Antes
patent: 6157487 (2000-12-01), Staub et al.
patent: 6975438 (2005-12-01), Schilling et al.
patent: 2001/0043396 (2001-11-01), Lee
patent: 4432062 (1995-11-01), None
patent: 4432062 (1995-11-01), None
patent: 0 105 099 (1984-04-01), None
patent: 0 375 833 (1990-07-01), None
patent: WO 97/19821 (1997-06-01), None
patent: WO0180175 (2001-10-01), None
O.S. Heavens, Ph.D.,Optical Properties of Thin Solid Films, Butterworths Scientific Publications, pp. 155-161 (London 1955).

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