Three-dimensional scanner, three-dimensional scanning system and three-dimensional scanning method

The invention relates to a three-dimensional scanner, a three-dimensional scanning system and a three-dimensional scanning method. According to the three-dimensional scanner provided by the invention,due to the fact that the working depth of field of a pattern projector is adjustable and the working depth of field of an image acquisition sensor is matched with the working depth of field of the pattern projector, the pattern projector can be adjusted to the corresponding working depth of field when objects to be measured of different sizes are scanned, other scanners do not need to be used, and the scanning speed is increased. Besides, since the three-dimensional scanner can scan the to-be-measured objects of different sizes, multiple purposes are achieved, other scanners do not need to bepurchased additionally, and the cost is effectively reduced. 本公开涉及一种三维扫描仪、三维扫描系统及方法，属于工业检测技术领域，本公开提供的三维扫描仪，由于图案投影器的工作景深可调节，并且图像采集传感器的工作景深与图案投影器的工作景深适配，在扫描不同尺寸的待测物体时，可以调节图案投影器到相应的工作景深，而不需要使用其它扫描仪，从而提高了扫描速度。此外，由于本公开中的三维扫描仪可以对不同