Patent ID: 7672030

Claim:
A three-dimensional security feature comprising a hologram having interference fringes recorded therein, wherein said hologram is recorded in such a manner that it is used to reconstruct an image comprising at least two three-dimensional linear patterns, at least one of said at least two three-dimensional linear patterns having at least one portion which crosses the other linear pattern at an inner side and at least one portion which crosses the other linear pattern at an outer side, wherein the at least two three-dimensional linear patterns are recorded in such a manner that the two three-dimensional linear patterns are viewed as one linear pattern when viewed with naked eyes wherein the interference fringes represent calculated interference fringes between the light coming from a set of point light sources positioned at a surface of the two three-dimensional linear pattern and a reference light wherein said three-dimensional security feature is recorded as a computer generated hologram and wherein the line widths of the linear patterns are not greater than 300 μm.