| 摘要 |
A measuring device (1) for contactlessly measuring the temperature is provided with imaging optics (3, 3′) for IR radiation (5), which is incident on a measurement object (16) from a measuring spot (14), and a measuring spot marking apparatus (11) which generates a measuring spot mark (15) which delimits the measuring spot (14), wherein the aperture angle detected by the imaging optics (3, 3′), can be varied using an adjustment device (7), and the adjustment device (7) can be used to change the size of the measuring spot mark (15) in a manner corresponding to the variation in the aperture angle (FIG. 2).
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