1. Dimensional Metrology Dimensional Metrology Program Steve Phillips Program Manager MEL Metrology Support for Laser Trackers and Scanners Supports Industrial Innovation High leverage through ANSI / ISO standards Provides unique calibration facility to industry

2. Dimensional Metrology X Y Z x y z Horizontal Axis R   Vertical Axis Laser Trackers: Coordinate Measuring Machines Using Spherical Coordinates

3. Dimensional Metrology Laser Trackers: Optics Link the Workpiece & CMM Allows large measurement  volumes Bring the tracker to the   workpiece Lower capital costs than  large conventional CMMs Factory can be reconfigured

4. Dimensional Metrology Background MEL invents the laser tracker in 1987 Commercial trackers available since 1988 but are slow and difficult By 2000, advances in optoelectronics allow LIDAR type range sensor greatly expanding tracker use Trackers rapidly displace “total stations” in large scale manufacturing 2000 DMP starts laser tracker standards effort and begins metrology infrastructure development

5. Dimensional Metrology Background 2006 DMP lead effort completes the world’s first laser tracker standard 2007 DMP provides first distance ranging test for laser tracers Data showing stability better than 1  10 -7 at 61m +MPE  MPE Test result of customer laser ranging system passing the manufacturer’s specification

6. Dimensional Metrology Recent Developments 2009: DMP provides volumetric performance calibrations per B89.4.19

7. Dimensional Metrology Recent Developments 2009: Calibration Results have yielded significant improvements in two major US laser tracker manufacturers Parametric error analysis of a tracker Volumetric errors of a tracker per B89.4.19 First principles analysis describes tracker errors in detail

8. Dimensional Metrology Recent Developments 2009: Noncooperative target range for laser scanners supplies insights for US manufacturers Noncooperative target rangeFARO R&D staff testing Photon scanner Photon scanner

9. Dimensional Metrology Recent Developments 2010: 1D high accuracy artifact calibration instrument to be completed providing practical access to calibrated artifacts for laser trackers 2010: US lead effort to develop ISO standard for laser tracker systems

10. Dimensional Metrology Q & A Disclaimer: Data on commercial products are only provided for the sake of describing experimental results. NIST does not endorse or recommend any commercial products or imply that this equipment is the best for any particular application.