| 摘要 |
This photothermal examination camera ( 16 ) comprises: a system ( 22 ) for shaping a laser beam ( 4 ), which includes a device ( 40 ) for elongating the cross section of the beam in order to form, on a surface of a part ( 1 ) to be examined, an elongate heating zone along a direction; a matrix ( 8 ) of infrared detectors for detecting infrared radiation emitted by a detection zone on the surface ( 1 a) of the part ( 1 ) relative to the heating zone; and a signal processing unit ( 46 ) for processing the signals delivered by the infrared detectors in order to construct a thermographic image of the surface ( 1 a) of the part ( 1 ) by scanning the surface ( 1 a) with the heating zone. The camera includes a system for mechanically adjusting an offset between the elongate heating zone and the detection zone. Application to the non-destructive inspection of parts.
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