Electro-optical alignment control system

Claim 1

A CONTROL SYSTEM FOR MAINTAINING ALIGNMENT BETWEEN FIRST AND SECOND MOVABLE BODIES COMPRISING: (A) FIRST SUPPORTING MEANS FOR SUPPORTING SAID FIRST MOVABLE BODY TO ALLOW MOVEMENT OF SAID FIRST MOVABLE BODY WITHIN A HORIZONTAL PLANE; (B) SECOND SUPPORTING MEANS FOR MOVABLY SUPPORTING SAID SECOND MOVABLE BODY WITH RESPECT TO SAID SECOND SUPPORTING MEANS IN A LINE PERPENDICULAR TO SAID HORIZONTAL PLANE AND FOR MOVING SAID SECOND MOVABLE BODY IN A PATH SPACED FROM SAID FIRST SUPPORTING MEANS; (C) ONE OF SAID BODIES COMPRISING A SMALL AREA SOURCE OF RADIANT ENERGY; (D) THE OTHER OF SAID BODIES COMPRISING DIRECTIONAL ENERGY SENSING MEANS; (E) CIRCUIT MEANS RESPONSIVE TO SAID SENSING MEANS FOR PROVIDING A FIRST ELECTRICAL OUTPUT REPRESENTATIVE OF MISALIGNMENT BETWEEN SAID DIRECTIONAL ENERGY SENSING MEANS AND SAID SOURCE OF RADIANT ENERGY IN SAID HORIZONTAL PLANE AND FOR PROVIDING A SECOND ELECTRICAL OUTPUT REPRESENTATIVE OF MISALIGNMENT BETWEEN SAID DIRECTIONAL ENERGY SENSING MEANS AND SAID SOURCE OF RADIANT ENERGY ALONG SAID LINE PERPENDICULAR TO SAID HORIZONTAL PLANE; (F) FIRST DRIVE MEANS RESPONSIVE TO SAID FIRST ELECTRICAL OUTPUT FOR MOVING SAID FIRST MOVABLE BODY WITHIN SAID HORIZONTAL PLANE IN A DIRECTION TO PRODUCE ALIGNMENT WITH SAID SECOND MOVABLE BODY; (G) SAID FIRST SUPPORTING MEANS AND FIRST DRIVE MEANS INCLUDING MEANS FOR ROTATING SAID FIRST MOVABLE BODY; (H) SECOND DRIVE MEANS RESPONSIVE TO SAID SECOND ELECTRICAL OUTPUT FOR MOVING SAID SECOND MOVABLE BODY WITH RESPECT TO SAID SECOND SUPPORTING MEANS ALONG SAID LINE PERPENDICULAR TO SAID HORIZONTAL PLANE IN A DIRECTION TO PRODUCE ALIGNMENT WITH SAID FIRST BODY; (I) A MEMBER SPACED FROM SAID FIRST SUPPORTING MEANS; (J) SAID SECOND SUPPORTING MEANS FURTHER COMPRISING MEANS FOR MAINTAINING A FIXED SPACE BETWEEN SAID SECOND SUPPORTING MEANS AND SAID MEMBER.