Abstract: A laser target sphere is used in conjunction with a laser scanner. The target sphere has an ideal lambertian reflectance appropriate for laser scanning systems facilitating the laser scanner finding the center of the target sphere. The target sphere includes an internal kinematic mount configured to concentrically mount the target sphere to a Spherical Mounted Retroreflector (SMR) providing a same center location of the two spheres. By adapting the target sphere to mount concentrically on the SMR, the laser scanner and target sphere system can use the same points defined for the SMR.

Abstract: A calibration device provides a lightweight rigid support for a long arm. The rigid support includes thin flat sheets separated by a light weight filler. The filler prevents wrinkling or rippling of the flat sheets. Three ball trihedral nest kinematic mounts may be attached to opposite ends of the long arm for precise mounting of retro-reflectors for optical calibration, or precision spheres may be attached to the opposite ends of the long tube to obtain a mechanical calibration standard.