Abstract: An infrared sensor having at least one measuring structure, which has, for example, a sensor chip having a measuring structure and a cap chip which is attached to the sensor chip and, together with the sensor chip, defines a sensor space; a screen having an internal screen area and an external screen area surrounding the internal screen area being formed on the top side of the cap chip; the internal screen area which is transparent to the infrared radiation to be detected being formed above the measuring structure, and the external screen area being at least partly non-transparent for the incident infrared radiation. The external screen area may be designed in particular as a reflective coating of metal or a dielectric layer, as reflective structuring formed by trenches having oblique surfaces, or as absorbing structuring.