Patent ID: 6975438

Claim:
An optically variable surface pattern comprising surface portions with light-diffracting, reflecting structures and reflective surface portions for producing two or more representations which with lighting with light impinging perpendicularly onto the surface pattern are perceptible separately by a human viewer at a viewing distance of 30 cm at different angles of view, wherein the surface portions contain achromatically light-diffracting, sawtooth-shaped relief structures with angles of inclination of the sawtooth with respect to the plane of the surface pattern, the relief structures associated with different representations have different angles of inclination and the value of the largest angle of inclination is at most 25° so that the difference in the angles of the light beams reflected at the relief structures from at least two of the representations is smaller than an angle difference detected by the photoelectric sensor of a photocopier of 30°, whereby a copy produced by means of a photocopier reproduces at least two representations one over the other.