Triaxial non-contact image measuring system

The utility model discloses a triaxial non-contact image measuring system. The system comprises a workbench, a pick-up camera capable of moving in a three-dimensional manner, a laser displacement transducer, a triaxial grating bar, and a grating data acquisition card, wherein the pick-up camera and the laser sensor are connected with a Z-axis guide rail through a connecting beam, and vertically corresponds to the workbench; and a servomotor can drive a sliding block to move to make the pick-up camera vertically move. In the utility model, the pick-up camera acquires the image in an X-Y plane for plane surveying, and the laser displacement transducer measures the height of each positioning point near a pel to be measured in the Z direction, calculates the mean value, and defines the required moving distance when the pick-up camera focuses according to the mean value. The system can conveniently and quickly detect the complex workpiece, raise the measuring efficiency, enlarge the measuring area, and meet the measuring requirement of the image.