RADIOMETER, SIGHT FOR AN IR DEVICE AND METHOD

摘要

The invention relates to an IR device comprising an IR detector (2), a lens (3, 51) and a light source (6). The lens (3, 51) is positioned in relation to the IR detector (2) in such a way that it focuses IR radiation (4) from a measuring surface onto the detector (2). The light source (6) emits visible light in order to mark the measuring surface. The beam path of the visible light runs through the lens (3, 51). The invention also relates to a sight for an IR device (1) for visibly marking a measuring surface. The sight comprises a light source (63) for emitting a visible light beam, which marks the measuring surface. A piezoelectric actuator (61, 62, 71, 72, 118, 123, 141, 142) controls the direction of the light beam. As an alternative to the piezoelectric actuator, the light beam can be guided at a constant angular speed and the direction of the light beam can be modified in a stepped manner by a sectored mirror (181). Said mirror (181) comprises at least three concave sectors (182). The invention also relates to corresponding methods and to the alignment of light sources (244) in a sight.