Patent ID: 11948039
Assignee: DIAMSAFE S.R.L.
Field: Control (Instruments)
Classification: CPC G  B | IPC G

Claim 0:
1. A multipurpose card, comprising a first surface, a second surface, arranged in front of said first surface, a layer, arranged between said first surface and said second surface, and a stone, at least semi-transparent to an electromagnetic radiation, in a fixed position and at least partially in a housing at least partially in said layer; wherein:
the first surface comprises:
one or more first frontal areas with a first frontal degree of transparency to said electromagnetic radiation, either positioned in front of or comprising portions of said stone;
one or more first lateral areas with a first lateral degree of transparency to said electromagnetic radiation, positioned outside said one or more first frontal areas;

wherein said first frontal degree of transparency is greater than said first lateral degree of transparency;
the second surface comprises:
one or more second frontal areas with a second frontal degree of transparency to said electromagnetic radiation, positioned in front of said stone;
one or more second lateral areas with a second lateral degree of transparency to said electromagnetic radiation, positioned outside said one or more second frontal areas;

wherein said second frontal degree of transparency is smaller than said second lateral degree of transparency; and
the layer comprises, along a set of electromagnetic paths between said one or more second lateral areas and a surface portion of said housing, interposed means at least semi-transparent to said electromagnetic radiation, configured to allow light to pass into said housing.