A method for producing a security device (1) comprising a first colour pattern (A) visible along an associated viewing axis (Δα) and at least one second colour pattern (B) visible along an associated viewing axis (Δβ), comprising the following steps:—assembling an image layer (4) suitable for forming at least one colour pattern (A, B) by laser etching, on a support (3),—laser etching the first colour pattern (A) in the image layer (4), along the associated viewing axis (Δα) of same, in such a way that it can be seen through a lens array (7),—for each of said at least one second colour pattern (B), laser etching said at least one second colour pattern (A) in the image layer (4), along the associated viewing axis (Δβ) of same, in such a way that it can be seen through a lens array (7). A security device (1) obtained by said method.
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