THERMAL WAVE IMAGING APPARATUS

摘要

A thermal wave imaging apparatus generates a real time image of the surface and subsurface of an opaque solid object. AC electrical signals indicative of the configuration of the surface and subsurface of the object which are generated during a thermal wave scan of the object are stored in an image memory under the control of a central processor. A refresh counter generates sequential, incremental signals used to control the X and Y deflection of a display monitor. Such signals also address the image memory and generate output data controlling the intensity of the display point at each generated X and Y deflection point. A modulation and intensity regulation circuit generates an optical beam having a constant amplitude inspite of any fluctuations in the output of a laser.