Patent ID: 7019848
Filing Date: 2006-03-28
Classification: G01B,H05K

Abstract:
1. A three-dimensional measuring instrument, comprising: a uniform light illumination unit which is capable of a uniformly illuminating a measurement object as well as surrounding non-measurement objects; an illuminating means having a striped light intensity distribution and is capable of illuminating at least two light component patterns with different wave length components and different relative phase relationships at the same time onto at least the measurement object; an image retrieval means which is capable of retrieving images of reflected lights from the measurement object as well as the surrounding non-measurement objects illuminated with the uniform light, and is also capable of retrieving images of reflected lights at least from the measurement object illuminated with the light component pattern separately for each light component; an area extracting means for extracting an existing area of the measurement object based on the image data derived from the uniform light retrieved by the image retrieval means; and a computing means for calculating a predetermined height of the measurement object whose existing area is extracted by the area extracting means based on at least two image data retrieved by the image retrieval means.