Patent ID: 8436890
Filing Date: 2013-05-07
Classification: G01B,G01N,H05K

Abstract:
1. A three-dimensional measuring device comprising: an irradiation means capable of irradiating a striped light pattern used for a spatial encoding method and a striped light pattern used for a phase shift method on a measurement object part on a board main body; an imaging means capable of imaging a measurement object part irradiated by the light pattern; an image control means for controlling imaging by the imaging means; a first calculation means for calculating at least a height of the measurement object part according to the phase shift method based on a multiplicity of image data imaged by the imaging means; and a second calculation means capable of using the spatial encoding method to identify a line corresponding to the measurement object part from among the image data at a time of calculation by the first calculation means by the phase shift method based on the image data imaged by the imaging means, wherein the imaging control means determines an imaging count for the imaging means for irradiation of the light pattern used for the spatial encoding method based on height data or approximate height data of the measurement object part and executes imaging of the determined imaging count, and wherein, when the obtained height data or the approximate height data constitutes data indicating that the height of the measurement object part is less than a predetermined first value, the imaging count of the imaging means for irradiation of the light pattern used for the spatial encoding method is set to zero, and the height of the measurement object part is calculated by the first calculation means without identification processing by the second calculation means.