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High-speed 3D thermography

: Landmann, M.; Heist, S.; Dietrich, P.; Lutzke, P.; Gebhart, I.; Templin, J.; Kühmstedt, P.; Tünnermann, A.; Notni, G.


Optics and Lasers in Engineering 121 (2019), S.448-455
ISSN: 0143-8166
Fraunhofer IOF ()

We present a novel high-speed sensor for simultaneously measuring the three-dimensional (3D) shape and the surface temperature of fast moving objects. The 3D topography is obtained by a structured light sensor based on GOBO projection of aperiodic sinusoidal patterns in the visible range of light. At the same time, a high-speed long-wave infrared camera records the temperature distribution on the object surface. We show first promising 3D thermography measurement results of an inflating airbag, a basketball player, and the crushing of a metal tube conducted at a 3D frame rate of 1 kHz.