Patent ID: 8908154
Filing Date: 2014-12-09
Classification: G01B,G01C,G01S,G06F,G16Z

Abstract:
1. A coordinate measurement device configured to send a first beam of light to a remote retroreflector target, the retroreflector target having a position in space, the retroreflector target returning a portion of the first beam as a second beam, the measurement device comprising: a first light source configured to emit a first light having a first wavelength; a second light source configured to emit a second light having a second wavelength, the second wavelength different than the first wavelength; a fiber-optic coupler that includes at least a first port, a second port, and a third port, the first port configured to accept a first portion of the first light, the second port configured to accept a second portion of the second light, the third port configured to transmit a third light, the third light including a portion of the first portion and a portion of the second portion; an optical system configured to transmit a portion of the third light out of the coordinate measurement device as the first beam; a first motor and a second motor that together are configured to direct the first beam of light to a first direction, the first direction determined by a first angle of rotation about a first axis and a second angle of rotation about a second axis, the first angle of rotation produced by the first motor and the second angle of rotation produced by the second motor; a first angle measuring device configured to measure the first angle of rotation and a second angle measuring device configured to measure the second angle of rotation; a distance meter configured to measure a first distance from the coordinate measurement device to the retroreflector target based at least in part on a third portion of the second beam received by a first optical detector; and a processor configured to provide three-dimensional coordinates of the retroreflector target, the three-dimensional coordinates based at least in part on the first distance, the first angle of rotation, and the second angle of rotation.