Patent ID: 8803055

Claim:
A target for a multi-dimensional tracking system having a tracker and a laser light source, comprising: an optical target adapted to communicate with the laser light source; a position sensitive detector operatively coupled with said optical target and operative to provide an indication of the orientation of said optical target relative to the laser light; first support means to rotatably support said optical target and said position sensitive detector about a first rotational axis; second support means to rotatably support said optical target and said position sensitive detector about a second rotational axis disposed orthogonal to said first axis, said first support means being rotatably coupled to said second support means; first motive means coupled to said first support means to cause rotational movement of said optical target and said position sensitive detector about said first rotational axis; second motive means operatively coupled to said second support means to cause rotational movement of said optical target and position sensitive detector about aid second rotational axis; and control means responsive to the output of said position sensitive detector to control operation of said first motive means and said second motive means, whereby said optical target is maintained facing the tracker at all times as the target is moved.