An optical device comprises a printed circuit card comprising an image capture electronic circuit, a metal lens support comprising at least one optical lens, the lens support being mounted on the printed circuit card so as to align, on the optical axis of the device, the image capture electronic circuit and the optical lens; the device further comprises at least one first electrically conductive heating element on and in electrical contact with the printed circuit card, between the lens support and the printed circuit card, and bearing against the lens support, the first heating element being configured to have passed through it an electrical current coming from the printed circuit card.