Optical guidance system

Claim 1

AN OPTICAL GUIDANCE SYSTEM FOR GUIDING A MOTOR VEHICLE INTO A CONFINED PARKING SPACE BY THE USE OF TWO LIGHT-REFLECTING SYSTEMS WHICH FUNCTION CONCURRENTLY TO PRODUCE TWO VISUAL IMAGES, ONE NORMAL AND THE OTHER REVERSED, OF A SINGLE HORIZONTALLY MOVING REFERENCE OBJECT SUCH AS ONE OF THE HEADLIGHTS OF SAID MOTOR VEHICLE, SAID OPTICAL GUIDANCE SYSTEM COMPRISING A PAIR OF SIMPLE REFLECTORS AND A COMPOUND REFLECTOR, SAID SIMPLE REFLECTORS BEING HORIZONTALLY ELONGATE, SUBSTANTIALLY CO-EXTENSIVE AND PROVIDING CONVEX REFLECTING SURFACES WHICH ARE EXPOSED TO THE VIEW OF THE DRIVER OF AN ONCOMING MOTOR VEHICLE, SAID SIMPLE REFLECTORS BEING SITUATED ADJACENT EACH OTHER IN DIFFERENT HORIZONTAL PLANES, SAID COMPOUND REFLECTOR BEING SITUATED ADJACENT ONE OF SAID SIMPLE REFLECTORS IN ANOTHER HORIZONTAL PLANE, SAID COMPOUND REFLECTOR HAVING A VERTICAL BISECTING PLANE WHICH PASSES THROUGH BOTH SIMPLE REFLECTORS, PRODUCING IN THE SIMPLE REFLECTOR WHICH IS ADJACENT SAID COMPOUND REFLECTOR A REVERSED IMAGE OF SUCH HORIZONTALLY MOVING REFERENCE OBJECT ON SAID MOTOR VEHICLE, THE OTHER SIMPLE REFLECTOR PRODUCING A NORMAL IMAGE OF THE SAME HORIZONTALLY MOVING REFERENCE OBJECT, WHEREBY SAID NORMAL AND REVERSED IMAGES ARE SIMULTANEOUSLY VISIBLE IN SAID SIMPLE REFLECTORS IN VERTICAL ALIGNMENT WITH EACH OTHER WHEN SAID REFERENCE OBJECT OCCUPIES A PREDETERMINED POSITION RELATIVE TO SAID SIMPLE REFLECTORS AND OUT OF VERTICAL ALIGNMENT WITH EACH OTHER WHEN SAID REFERENCE OBJECT OCCUPIES ANY OTHER POSITION RELATIVE TO SAID SIMPLE REFLECTOR.