| 摘要 |
A detector (10) for responding to infrared radiation from a target, to produce a temperature indicating output signal to measurement electronics comprises a plurality of thermocouples laid out on a substrate (13). Each thermocouple comprises a first leg of a first material and a second leg of a second material, the first material being different from the second material, the first leg and the second leg being electrically connected. The plurality of thermocouples are divided into two groups, a first group (11) comprising a plurality of first thermocouples electrically connected in series, and a second group (12) comprising a plurality of second thermocouples electrically connected in series. The first group (11) and the second group (12) of thermocouples are electrically connected in series with one another at a connection point (6). The first group (11) and the second group (12) of thermocouples are supported on a common substrate (13) in close proximity to one another and at least first legs of thermocouples of the first group (11) are physically interleaved with first legs of thermocouples of the second group (12). Complete thermocouples of the two groups (11, 12) may be interleaved with one another. |
