Abstract: A vertically stacked thermopile and an IR sensor using said stacked thermopiles are provided. The vertically stacked thermopile may include multiple thermocouples stacked vertically on one another. The thermocouples may be connected in series, parallel, or a combination of series and parallel. One or more vertically stacked thermopiles may be included in an IR sensor and the thermopiles may be connected in series, parallel, or a combination of series and parallel.

Abstract: A radiation sensor (10) comprises plural radiation sensing elements (1) arranged along an arrangement line, a lens having an optical axis focusing radiation towards the sensing elements, and circuitry (2) receiving the electric signal of the sensing elements and providing an output signal. The midpoint of the arrangement line may be offset against the optical axis of the converging section (5). At least some of the sensing elements may have different sizes. At least some of the sensing elements may have different relative sensitivity compared to each other. Two or more pairs of adjacent sensing elements may have a different pitch.

Abstract: A vertically stacked thermopile and an IR sensor using said stacked thermopiles are provided. The vertically stacked thermopile may include multiple thermocouples stacked vertically on one another. The thermocouples may be connected in series, parallel, or a combination of series and parallel. One or more vertically stacked thermopiles may be included in an IR sensor and the thermopiles may be connected in series, parallel, or a combination of series and parallel.

Abstract: A sensor (30) for detecting electromagnetic radiation comprises a sensor element (10), a housing (31, 33) in which the sensor element is disposed, and a radiation inlet window (35) provided in the housing and closed by a material (32) transmissible for the radiation to be detected. The transmissible material (32) is fixed to the housing by fixation means (38) not disposed in the field of view of the sensor element.

Abstract: A sensor element (10) for detecting electromagnetic radiation, particularly in the infrared range, comprises one or more heat-sensitive portions (4a, 4b) provided on a substrate (1-3) and one or more influencing layers (5a, 5b) for influencing the absorption and/or reflection of the electromagnetic radiation to be detected. The heat-sensitive portion(s) and/or the influencing layers are arranged on the substrate in accordance with the thermal properties of the influencing layers, preferably asymmetrically.

Abstract: A radiation sensor (10) comprises a support (1), a cavity (2) which may be a recess or a through hole formed in one surface of the support (1), a sensor element (4, 4a, 4b) formed above the cavity (2), preferably on a membrane (3) covering the cavity (2), and electric terminals (5, 5a, 5b) for the sensor element (4, 4a, 4b). The cavity (2) in the surface of the support (1) has a fully or partly rounded contour (2a).