Faro Technologies, Inc.

Ryan Kruse

Robert E Bridges

Yu Gong

Paul McCormack

Emmanuel Lafond

A method for determining three-dimensional coordinates of an object point on a surface of an object, the method including steps of: providing a source, a projector, and a camera; in each of two instances: spatially modulating source light; sending a modulator pattern of light through the projector lens to form light spots; filtering the spots with a pinhole plate; propagating light from the light spots onto the object to produce a fringe pattern; imaging the object point with a camera lens onto an array point of the photosensitive array to obtain first and second electrical data values from the photosensitive array; and determining the three-dimensional coordinates of the first object point based at least in part on the first electrical data value, the second electrical data value, and a baseline length.

Device and method using a spatial light modulator to find 3D coordinates of an object

A method for determining three-dimensional coordinates of an object point on a surface of an object, the method including steps of: sending a beam of light to a diffraction grating; sending a first diffracted beam and a second diffracted beam to an objective lens to form at least two spots of light, which are passed through transparent regions of a plate to produce a first fringe pattern on the surface of the object; imaging the object point illuminated by the first fringe pattern onto a photosensitive array to obtain a first electrical data value; moving the plate to a second position; sending spots through plate to produce a second fringe pattern on the surface of the object; imaging the point onto the array point to obtain a second electrical data value; and calculating the three-dimensional coordinates of the first object point.

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Waltham, MA, United States of America

Ryan Kruse