Probe for three-dimensional scanner and three-dimensional scanner

A probe for a three-dimensional scanner having a plurality of markers of which images are captured by an imaging unit, the probe comprising:

• a scanner unit including a scanner light source that emits pattern light in a measurement direction and a scanner imaging part that captures an image of the pattern light emitted by the scanner light source in the measurement direction;
• a marker block including a marker holder;
• and
• a self-luminous marker positioned and fixed by the marker holder, wherein the self-luminous marker includes:
• a substrate;
• a marker light source arranged on a central portion of the substrate;
• and
• a diffusion plate configured to uniformly diffuse light emitted from the marker light source, wherein
• the diffusion plate has a central portion and a peripheral portion surrounding the central portion, and a thickness of the central portion is greater than a thickness of the peripheral portion.