Infrared imagery device with integrated shield against parasite infrared radiation and method of manufacturing the device

An infrared imagery device comprising:

• a support, comprising an infrared radiation detector that comprises a zone sensitive to infrared radiation,
• at least one optical device, placed facing the infrared radiation detector, and
• a shield device against frontal parasite infrared radiation capable of penetrating into a space between the support and the optical device, through said optical device, and lateral parasite infrared radiation that can penetrate laterally into said space,
• wherein the shield device comprises at least a shield assembly comprising N continuous beads, spaced from each other, each provided with a vent and made of a material that can significantly attenuate lateral parasite radiation, and each of the N beads extends from the support as far as the optical device, in which N is an integer number equal to at least 2, in which a rank 1 bead surrounds at least the sensitive zone of the infrared radiation detector, a rank i bead surrounds a rank i−1 bead, where i varies from 2 to N, and the N beads provided with corresponding vents form at least one baffle.