Rear view automotive periscope utilizing toric mirrors

Claim 1

A VEHICULAR TWO TORIC REAR-REVIEW MIRROR SYSTEM COMPRISING: (A) A FIRST MIRROR MOUNTED ABOVE THE VEHICLE TO RECEIVE RAYS FROM THE REAR AND REFLECT THEM DOWNWARDLY; (B) SAID FIRST MIRROR HAVING A REFLECTING SURFACE CONVEX IN THE HORIZONTAL MERIDIAN AND CONCAVE IN THE VERTICAL MERIDIAN; (C) A SECOND MIRROR MOUNTED BELOW THE FIRST, POSITIONED TO RECEIVE THE DOWNWARDLY REFLECTED RAYS FROM SAID FIRST MIRROR AND TO DIRECT SAID RAYS TO THE EYE OF A VEHICLE OPERATOR IN NORMAL OPERATING POSITION; (D) SAID SECOND MIRROR HAVING A REFLECTING SURFACE CONCAVE IN THE HORIZONTAL AND VERTICAL MERIDIANS; (E) SAID MIRRORS BEING SPACED APART A VERTICAL DISTANCE APPROXIMATELY EQUAL TO THE SUM OF THE FOCAL DISTANCES OF THE TWO MIRRORS IN THEIR RESPECTIVE VERTICAL MERIDIANS; AND (F) WHEREIN THE FOCAL DISTANCES IN THE HORIZONTAL SECTION OF THE UPPER (FUH) AND LOWER (F1H) MIRRORS, THE DISTANCE BETWEEN THE MIRRORS (D), AND THE DISTANCE FROM THE LOWER MIRROR TO THE OBSERVER''S EYE (E) ARE RELATED BY: