Patent ID: 9170098
Filing Date: 2015-10-27
Classification: G01B

Abstract:
1. A method for determining three-dimensional coordinates of a first object point on a surface of an object, the method comprising steps of: providing a laser source, a projector, and a camera, the projector including a spatial light modulator, a projector lens, a pinhole plate, and a processor, the spatial light modulator selected from the group consisting of a digital micromirror device, a liquid crystal display, and a liquid crystal on silicon device, the camera including a camera lens and a photosensitive array, the camera lens having an optical axis, the projector having a projector perspective center, the camera having a camera perspective center, a line segment connecting the projector perspective center and the camera perspective center being a baseline, a length of the baseline being a baseline length; projecting a first light from the laser source to the spatial light modulator; in a first instance: in a second instance: determining the three-dimensional coordinates of the first object point based at least in part on the first pitch, a spatial filter characteristic of the pinhole plate, the first phase, the second phase, the first electrical data value, the second electrical data value, the non-zero angle, and the baseline length; and storing the three-dimensional coordinates of the first object point.