Device for lighting and optical communication combined with viewing of the communication field

A lighting device, comprising:

• a first fixed light source configured to provide illumination;
• a second light source configured to transmit data by modulating the light;
• first and second optical refractor devices positioned, respectively, with respect to the first and second light sources so as to capture the light emitted by the first and second light sources and to form, respectively, distinct first and second light beams, the second light beam defining a data transmission zone suitable for the transmission of data;
• and
• a variator device configured to vary the luminosity and/or the color of the first light beam, the variator device configured to accentuate or deaccentuate the visibility of an edge of the data transmission zone defined by the second light beam depending, respectively, on the availability or unavailability of a data transmission service provided in the data transmission zone.