Patent ID: 11073376

Abstract:
An imaging head 100 includes a laser projector 110, an LED projector 120, a light receiving lens 132, a light receiver 131, and a processor 200. The laser projector 110 emits measurement light to a workpiece W. The LED projector 120 emits uniform observation light to the workpiece W. The light receiving lens 132 converges reflected light of the measurement light and reflected light of the observation light that are reflected back from the workpiece W. The light receiver 131 has a light receiving surface composed of multiple light receiving elements that are two-dimensionally arranged. The laser projector 110, the light receiver 131, and the light receiving lens 132 are arranged so that a plane containing the light receiving surface and a plane containing the principal plane of the light receiving lens 132 will satisfy the Scheimpflug condition relative to a light projection axis of the laser projector 110.